IOS 开发-- 常用-- 核心代码-白红宇

IOS 开发-- 常用-- 核心代码

阅读量：5138 次

发布时间：2019-06-13

本文共 61297 字，大约阅读时间需要 204 分钟。

网络封装

#import <Foundation/Foundation.h>

@class NetWorkRequest;

// 网络请求成功block

typedef void(^NetworkRequestSuccessedHandler)(void);

// 网络请求失败block

typedef void(^NetworkRequestFailedHandler)(NSError *error);

// 网络请求进度block

typedef void(^NetworkRequestProgressHandler)(NSInteger progress);

@protocol NetWorkRequestDelegate <NSObject>

@optional

//network请求成功

- (void)netWorkRequest:(NetWorkRequest *)request SuccessfulReceiveData:(NSData *)data;

//network请求失败

- (void)netWorkRequest:(NetWorkRequest *)request didFailed:(NSError *)error;

//获取network下载进度

- (void)netWorkRequest:(NetWorkRequest *)request withProgress:(CGFloat)progress;

@end

@interface NetWorkRequest : NSObject<NSURLConnectionDataDelegate>

@property (nonatomic,assign) id<NetWorkRequestDelegate> delegate;

//声明两个方法,对外提供接口,分别实现GET请求方式和POST请求方式

//实现GET请求

- (void)requestForGETWithUrl:(NSString *)urlString;

//实现POST请求

- (void)requestForPOSTWithUrl:(NSString *)urlString postData:(NSData *)postData;

//取消网络请求

- (void)cancelRequest;

// 使用block实现网络请求结果回调

- (void)networdRquestSuccessedHandler:(NetworkRequestSuccessedHandler)successedHandler failedHandler:(NetworkRequestFailedHandler)failedHandler progressHandler:(NetworkRequestProgressHandler)progressHandler;

@end

.mmmmmmmmmmmm

#import "NetWorkRequest.h"

@interface NetWorkRequest ()

{

CGFloat _totalLength;

}

@property (nonatomic,retain) NSMutableData * receiveData;

@property (nonatomic,retain) NSURLConnection * connection;

@end

@implementation NetWorkRequest

- (void)dealloc

{

self.receiveData = nil;

self.connection = nil;

// [super dealloc];

}

//实现GET请求

- (void)requestForGETWithUrl:(NSString *)urlString

{

//封装URL对象

NSURL * url = [NSURL URLWithString:urlString];

//创建网络请求

NSMutableURLRequest * request = [[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10.0];

//设置GET请求

[request setHTTPMethod:@"GET"];

//建立异步连接,使用设置delegate方式实现

self.connection = [NSURLConnection connectionWithRequest:request delegate:self];

}

//实现POST请求

- (void)requestForPOSTWithUrl:(NSString *)urlString postData:(NSData *)postData

{

//封装URL对象

NSURL * url = [NSURL URLWithString:urlString];

//创建网络请求

NSMutableURLRequest * request = [[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];

//设置POST请求

[request setHTTPMethod:@"POST"];

[request setHTTPBody:postData];

[request setValue:@"" forHTTPHeaderField:@"Accept-Encoding"];

//建立异步连接,使用设置delegate方式实现

self.connection = [NSURLConnection connectionWithRequest:request delegate:self];

// NSURLConnection sendAsynchronousRequest:request queue:<#(NSOperationQueue *)#> completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

// }

}

//取消网络请求

- (void)cancelRequest

{

[_connection cancel];

self.connection = nil;

self.delegate = nil;

}

{

}

#pragma mark ------------------ 异步连接代理方法网络连接状态 -------------------

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error

{

NSLog(@"error = %@",error);

if ([_delegate respondsToSelector:@selector(netWorkRequest:didFailed:)]) {

[_delegate netWorkRequest:self didFailed:error];

}

self.receiveData = nil;

}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response

{

NSHTTPURLResponse *httpURLResponse = (NSHTTPURLResponse *)response;

NSLog(@"response = %@",httpURLResponse.allHeaderFields);

// _totalLength = [httpURLResponse.allHeaderFields ];

NSLog(@"response header = %lu",(unsigned long)[httpURLResponse description].length );

self.receiveData = [NSMutableData data];

_totalLength = [response expectedContentLength];

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

{

[_receiveData appendData:data];

//计算当前的下载进度

CGFloat progress = _receiveData.length/_totalLength;

//通知代理,执行代理方法,获取当前的下载进度

if ([_delegate respondsToSelector:@selector(netWorkRequest:withProgress:)]) {

[_delegate netWorkRequest:self withProgress:progress];

}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection

{

if ([_delegate respondsToSelector:@selector(netWorkRequest:SuccessfulReceiveData:)]) {

[_delegate netWorkRequest:self SuccessfulReceiveData:_receiveData];

}

self.receiveData = nil;

}

@end

数据持久化

文件读写

// //1.获取沙盒文件的主路径方法名:

// NSLog(@"home = %@",NSHomeDirectory());

// //1.获取Documents的路径, //主路径拼接子文件夹

// NSLog(@"documents = %@",[NSHomeDirectory() stringByAppendingString:@"/Documents"]);

// //拼接文件夹名字

// NSLog(@"documents = %@",[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]);

// //获取沙盒中文件的路径

// NSArray * files = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);

// NSLog(@"-------files-----%@",files.lastObject);

// //获取tmp 文件夹的路径

// NSLog(@"------tem = ----- %@",NSTemporaryDirectory());

// //获取文件包(.app)的路径 ---------NSBundle 获取的应用程序包文件及其子文件夹只能读取不能修改其他的文件可以修改

// NSString * filePath = [[NSBundle mainBundle] bundlePath];

// NSLog(@"---------------filePath = %@",filePath);

// //获取包里的可执行文件,

// NSString * executablePath = [[NSBundle mainBundle] executablePath];

// NSLog(@"----------- executablePath = %@",executablePath);

//存储一个字符串

//数据持久化过程:

//1.获取存储文件的上一级路径

NSString * documents = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0];

//2.拼接完整的文件夹存储路径

NSString * filePath = [documents stringByAppendingPathComponent:@"text.text"];

//3.存储数据

NSString * saveString = @"lanou";

[saveString writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:nil];

//从文件中,读取字符串对象

NSString * readString = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];

NSLog(@"readString = %@",readString);

// //获取存储文件的上级路径

// NSString * documents2 = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

// //拼接文件的完整了路径

// NSString * filePath2 = [documents2 stringByAppendingString:@"xiaoke.text"];

// // 创建数据并存储

// NSString * saveString2 = @"xioake";

//数组对象,存入文件

NSArray * nameArray = @[@"左友东",@"许珍珍",@"吴凯"];

NSString * caches = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0];

//拼接完整字符串路径

NSString * filePathOfCaches = [caches stringByAppendingString:@"names.plist"];

//写入给要写入的对象发送写入消息, 给出完整路径,

[nameArray writeToFile:filePathOfCaches atomically:YES];

//读取数组

NSArray * readArray = [NSArray arrayWithContentsOfFile:filePathOfCaches];

NSLog(@"read array = %@",readArray);

//字典对象,存入文件

NSDictionary * personDic = @{@"name": @"xiaoke",

@"sex":@"nan"};

NSString * tmp = NSTemporaryDirectory();

NSString * tmpFilePath = [tmp stringByAppendingPathComponent:@"dic.plist"];

[personDic writeToFile:tmpFilePath atomically:YES];

//字典读取

NSDictionary * readPersonDic = [NSDictionary dictionaryWithContentsOfFile:tmpFilePath];

NSLog(@"read person dic = %@",readPersonDic);

//将字典从dic.plist中读取出来,修改其中某个value,然后从新写入dic.plist文件

NSMutableDictionary * personM_Dic = [NSMutableDictionary dictionaryWithContentsOfFile:tmpFilePath];

[personM_Dic setValue:@"小可" forKey:@"name"];

[personM_Dic writeToFile:tmpFilePath atomically:YES];

//NSData数据读写

UIImage * image = [UIImage imageNamed:@"cellImage"];

NSData * saveData = UIImagePNGRepresentation(image);

NSString * imageFilePath = [documents stringByAppendingPathComponent:@"newCellImage.array"];

[saveData writeToFile:imageFilePath atomically:YES];

NSData * readData = [NSData dataWithContentsOfFile:imageFilePath];

UIImage * readImage = [UIImage imageWithData:readData];

UIImage * readImage2 = [UIImage imageWithContentsOfFile:imageFilePath];

UIImageView * ima = [[UIImageView alloc] initWithImage:readImage2];

[self.window addSubview:ima];

[ima release];

//读取应用程序包(工程)中得图像,有两种方式

//第一种, 读取后就存放在内存中, 二次读取速度快享元设计模式

[UIImage imageNamed:@"cellImage"];

//第二种, 没次都从包(.app)中读取, 速度稍微慢,但不持续占内存

[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"cellImage" ofType:@"png"]];

归档反归档

//序列化,编码

- (void)encodeWithCoder:(NSCoder *)aCoder

{

[aCoder encodeObject:_name forKey:@"NameKey"];

[aCoder encodeInt:_age forKey:@"AgeKey"];

}

//反序列化, 解码

- (id)initWithCoder:(NSCoder *)aDecoder

{

self = [super init];

if (self) {

self.name = [aDecoder decodeObjectForKey:@"NameKey"];

self.age = [aDecoder decodeIntForKey:@"AgeKey"];

}

return self;

}

- (void)didClickArchiverPersonButtonAction

{

ABPerson * person_xiaoke = [[ABPerson alloc]init];

person_xiaoke.name = @"Pack";

person_xiaoke.age = 24;

ABPerson * person_jiaozhu = [[ABPerson alloc] init];

person_jiaozhu.name = @"Siri";

person_jiaozhu.age = 23;

NSArray * archiverArray = @[person_xiaoke,person_jiaozhu];

[person_jiaozhu release];

[person_xiaoke release];

NSMutableData * archiverData = [NSMutableData data];

NSKeyedArchiver * archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:archiverData];

[archiver encodeObject:archiverArray forKey:@"personArray"];

[archiver finishEncoding];

NSString * file = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).lastObject;

NSString * filePath = [file stringByAppendingPathComponent:@"archiverArray.arr"];

[archiverData writeToFile:filePath atomically:YES];

[archiver release];

}

- (void)didClickUnarchiverPersonButtonAction

{

NSString * file = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).lastObject;

NSString * filePath = [file stringByAppendingPathComponent:@"archiverArray.arr"];

NSData * unarchiverData = [NSData dataWithContentsOfFile:filePath];

NSKeyedUnarchiver * unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:unarchiverData];

NSArray * unarchiverArray = [unarchiver decodeObjectForKey:@"personArray"];

[unarchiver finishDecoding];

for (ABPerson * person in unarchiverArray) {

NSLog(@"name = %@,age = %d",person.name,person.age);

}

//数组序列化Button 响应方法

- (void)didClickArchiverArrayButtonAction

{

ABPerson * person_x = [[ABPerson alloc]init];

person_x.name = @"船长";

person_x.age = 24;

ABPerson * person_jiaozhu = [[ABPerson alloc]init];

person_jiaozhu.name = @"教主";

person_jiaozhu.age = 24;

NSArray * personArray = @[person_xiaoke,person_jiaozhu];

[person_jiaozhu release];

[person_x release];

NSMutableData * archiveM_Data = [[NSMutableData alloc]init];

NSKeyedArchiver * keyedArchiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:archiveM_Data];

[keyedArchiver encodeObject:personArray forKey:@"personArray"];

[keyedArchiver finishEncoding];

NSString * file = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).lastObject;

NSString * filePath = [file stringByAppendingPathComponent:@"personArray.array"];

[archiveM_Data writeToFile:filePath atomically:YES];

[archiveM_Data release];

[keyedArchiver release];

}

//数组反序列化Button 响应方法

- (void)didClickUnarchiverArrayButtonAction

{

NSString * file = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0];

NSString * filePath = [file stringByAppendingPathComponent:@"personArray.array"];

NSData * unarchiverData = [NSData dataWithContentsOfFile:filePath];

NSKeyedUnarchiver * keyedUnarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:unarchiverData];

NSArray * personArray = [keyedUnarchiver decodeObjectForKey:@"personArray"];

[keyedUnarchiver finishDecoding];

[keyedUnarchiver release];

for (ABPerson * person in personArray) {

NSLog(@"name = %@, age = %d",person.name,person.age);

}

- (void)didClickArchiverButtonAction

{

//对复杂的数据对象进行写入资料,原理:复杂的数据对象序列化为NSData,将NSData写入文件,实现数据持久化

/*********************************

* 1.自定义复杂的数据类型,例如:ABPerson, (

* (1)ABPerson 必须实现NSCoding协议的方法

* (2)ABPerson 中得实例变量或属性(对象类型),也必须实现NSCoding协议的方法

(3)ABPerson 中得基本数据类型没有过多限制

2. 创建一个序列化工具对象

3. 对复杂对象进行序列化

4. 结束序列化

5. 写入Data

***************************************/

NSMutableData * archiverM_Data = [NSMutableData data];

NSKeyedArchiver * keyedArchiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:archiverM_Data];

//3, 对复杂对象进行序列化

ABPerson * person = [[ABPerson alloc] init];

person.name = @"xiaohei";

person.age = 24;

[keyedArchiver encodeObject:person forKey:@"PersonKey"];

//4.结束序列化

[keyedArchiver finishEncoding];

//NSData写入

NSString * file_person = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

NSString * filePath_person = [file_person stringByAppendingPathComponent:@"person.data"];

[archiverM_Data writeToFile:filePath_person atomically:YES];

[keyedArchiver release];

[person release];

}

- (void)didClickUnarchiverButtonAction

{

/************************

//通过读取文件,实例化复杂数据对象 // NSData

1.创建一个反序列化工具对象

********************/

//1.

NSString * file_person = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

NSString * filePath_person = [file_person stringByAppendingPathComponent:@"person.data"];

NSData * unarchiverData = [NSData dataWithContentsOfFile:filePath_person];

NSKeyedUnarchiver * keyUnarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:unarchiverData];

ABPerson * person = [keyUnarchiver decodeObjectForKey:@"PersonKey"];

[keyUnarchiver finishDecoding];

NSLog(@"name = %@, age = %d",person.name,person.age);

[keyUnarchiver release];

}

SQLite数据库

DataBase

#import <Foundation/Foundation.h>

#import <sqlite3.h>

@interface DataBase : NSObject

//打开数据库

+ (sqlite3 *)openDataBase;

//关闭数据库

+ (BOOL)closeDataBase;

@end

.mmmmmmmmmmmmmmmmmmm

#import "DataBase.h"

static sqlite3 * db = nil;

@implementation DataBase

+ (NSString *)document

{

NSString * file = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

return file;

}

//打开数据库

+ (sqlite3 *)openDataBase

{

//判断数据库是否打开,如果打开直接返回

if (db) {

return db;

}

//找到文件完整路径

NSString * filePath = [[DataBase document] stringByAppendingPathComponent:@"Contacts.sqlite"];

//创建NSFileManager对象

NSFileManager * fileManager = [NSFileManager defaultManager];

//判断沙盒中是否有Contacts.sqlite

if (![fileManager fileExistsAtPath:filePath]) {

//如果没有Contacts.sqlite文件,则创建数据库文件

int result = sqlite3_open([filePath UTF8String], &db);

if (result == SQLITE_OK) {

//如果创建数据库成功,先创建一个表的 SQL语法,

NSString * sql = @"CREATE TABLE 'Contacts'('name' TEXT NOT NULL,'sex' TEXT DEFAULT 不男不女,'age' INTEGER DEFAULT 18,'number' INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,'icon' BLOB)";

//给数据库添加表

int resultSQL = sqlite3_exec(db, [sql UTF8String], NULL, NULL, NULL);

if (resultSQL == SQLITE_OK) {

return db;

}

//如果沙盒中有数据库文件,则打开数据库

int result = sqlite3_open([filePath UTF8String], &db);

if (result == SQLITE_OK) {

return db;

}

return nil;

}

//关闭数据库

+ (BOOL)closeDataBase

{

int result = sqlite3_close(db);

if (result == SQLITE_OK) {

return YES;

}

return NO;

}

@end

DataManager

#import <Foundation/Foundation.h>

@interface DataManager : NSObject

+ (DataManager *)shareInstance;

//插入数据

- (void)insertWithName:(NSString *)name sex:(NSString *)sex age:(NSInteger)age number:(NSInteger)number image:(UIImage *)image;

//删除数据

- (void)deleteDataWithNumber:(NSInteger)number;

//修改数据

- (void)updataWithNumber:(NSInteger)number name:(NSString *)name;

//查找数据

- (NSMutableArray *)selectAllDataWithName;

//查找某个Number 的所有数据

- (NSDictionary *)selectOneContactsDicWithNumber:(NSInteger)number;

@end

.mmmmmmmmmmmmmmmmmmmmmmmm

#import "DataManager.h"

#import "DataBase.h"

@implementation DataManager

+ (DataManager *)shareInstance

{

static DataManager * _dataManager = nil;

@synchronized(self){

if (!_dataManager) {

_dataManager = [[DataManager alloc]init];

}

return _dataManager;

}

//插入数据

- (void)insertWithName:(NSString *)name sex:(NSString *)sex age:(NSInteger)age number:(NSInteger)number image:(UIImage *)image

{

//获取数据库

sqlite3 * db = [DataBase openDataBase];

//创建跟随指针stmt

sqlite3_stmt * stmt = nil;

//创建需要执行的SQL语法

NSString * sql = @"INSERT INTO Contacts (name,sex,age,number,icon) values(?,?,?,?,?)";

//验证SQL语句

int result = sqlite3_prepare(db, [sql UTF8String], -1, &stmt, NULL);

NSLog(@"result ========= %d",result);

if (result == SQLITE_OK) {

//绑定数据

sqlite3_bind_text(stmt, 1, [name UTF8String], -1, NULL);

sqlite3_bind_text(stmt, 2, [sex UTF8String], -1, NULL);

sqlite3_bind_int(stmt, 3, (int)age);

sqlite3_bind_int(stmt, 4, (int)number);

NSData * imageData = UIImagePNGRepresentation(image);

const void * bytes = [imageData bytes];

int length = (int)[imageData length];

sqlite3_bind_blob(stmt, 5, bytes, length, NULL);

//单步执行SQL语句

sqlite3_step(stmt);

//释放stmt

sqlite3_finalize(stmt);

}

//删除数据

- (void)deleteDataWithNumber:(NSInteger)number

{

//获取数据库

sqlite3 * db = [DataBase openDataBase];

//创建跟随指针,

sqlite3_stmt * stmt = nil;

//创建需要执行的SQL语句

NSString * deleteSQL = @"DELETE FROM Contacts WHERE number = ?";

//验证SQL语句

int result = sqlite3_prepare(db, [deleteSQL UTF8String], -1, &stmt, NULL);

NSLog(@"result ========= %d",result);

if (result == SQLITE_OK) {

//绑定数据

sqlite3_bind_int(stmt, 1, (int)number);

//删除数据单步执行SQL语句

sqlite3_step(stmt);

//释放跟随指针,stmt

sqlite3_finalize(stmt);

}

//修改数据

- (void)updataWithNumber:(NSInteger)number name:(NSString *)name

{

//获取数据库

sqlite3 * db = [DataBase openDataBase];

//创建跟随指针 stmt

sqlite3_stmt * stmt = nil;

//创建需要执行的SQL语句

NSString * updataSQL = @"UPDATE Contacts SET name = ? WHERE number = ?";

//验证SQL语句

int result = sqlite3_prepare(db, [updataSQL UTF8String], -1, &stmt, NULL);

NSLog(@"result ======== %d",result);

if (result == SQLITE_OK) {

//绑定数据

sqlite3_bind_text(stmt, 1, [name UTF8String], -1, NULL);

sqlite3_bind_int(stmt, 2, (int)number);

//单步执行SQL语句修改数据

sqlite3_step(stmt);

//释放跟随指针,stmt

sqlite3_finalize(stmt);

}

//查找数据

- (NSMutableArray *)selectAllDataWithName

{

//获取数据库

sqlite3 * db = [DataBase openDataBase];

//创建跟随指针 stmt

sqlite3_stmt * stmt = nil;

//创建需要执行的SQL语句

NSString * selectSQL = @"SELECT name FROM Contacts";

//验证SQL语句

int result = sqlite3_prepare(db, [selectSQL UTF8String], -1, &stmt, NULL);

NSLog(@"result ===========%d",result);

if (result == SQLITE_OK) {

//创建数据 ,用来保存查找到得name

NSMutableArray * allNameArray = [NSMutableArray array];

//循环执行单步SQL语句,step

while (sqlite3_step(stmt) == SQLITE_ROW) {

NSString * name = [NSString stringWithUTF8String:(const char *)sqlite3_column_text(stmt, 0)];

[allNameArray addObject:name];

}

return allNameArray;

}

return nil;

}

//查找某个Number 的所有数据

- (NSDictionary *)selectOneContactsDicWithNumber:(NSInteger)number

{

//获取数据库

sqlite3 * db = [DataBase openDataBase];

//创建跟随指针 stmt

sqlite3_stmt * stmt = nil;

//创建需要执行的SQL语句

NSString * selectSQL = @"SELECT name,sex,age,number,icon FROM Contacts WHERE number = ?";

//验证SQL语句

int result = sqlite3_prepare(db, [selectSQL UTF8String], -1, &stmt, NULL);

NSLog(@"result ====== %d",result);

if (result == SQLITE_OK) {

//绑定数据, number

sqlite3_bind_int(stmt, 1, (int)number);

//单步执行SQL语句 step

while (sqlite3_step(stmt) == SQLITE_ROW) {

NSString * name = [NSString stringWithUTF8String:(const char *)sqlite3_column_text(stmt, 0)];

NSString * sex = [NSString stringWithUTF8String:(const char *)sqlite3_column_text(stmt, 1)];

int age = sqlite3_column_int(stmt, 2);

int number = sqlite3_column_int(stmt, 3);

const void * bytes =sqlite3_column_blob(stmt, 4);

int length = sqlite3_column_bytes(stmt, 4);

NSData * imageData = [NSData dataWithBytes:bytes length:length];

UIImage * image = [UIImage imageWithData:imageData];

//释放跟随指针,stmt

sqlite3_finalize(stmt);

NSDictionary * dic = @{@"name": name,

@"sex":sex,

@"age":[NSNumber numberWithInt:age],

@"number":[NSNumber numberWithInt:number],

@"image":image};

return dic;

}

return nil;

}

@end

手势处理

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view.

ImageView * imageView = [[ImageView alloc] initWithFrame:CGRectMake(20, 20, 100, 100)];

[self.view addSubview:imageView];

[imageView release];

UIPanGestureRecognizer * panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(imageViewPanGesture:)];

[imageView addGestureRecognizer:panGesture];

[panGesture release];

// 实例变量

point = imageView.center;

}

//imageVie平移触发事件

- (void)imageViewPanGesture:(UIPanGestureRecognizer *)gesture

{

ImageView * imageView = (ImageView *)gesture.view;

CGFloat const f1 = point.x;

CGFloat const f2 = point.y;

CGPoint newPoint;

newPoint.x = f1+[gesture translationInView:imageView].x;

newPoint.y = f2+[gesture translationInView:imageView].y;

imageView.center = newPoint;

if (gesture.state == UIGestureRecognizerStateEnded) {

point = imageView.center;

}

XML解析

XML DOM解析(GDataXMLNode)

NSString * studentPath = [[NSBundle mainBundle] pathForResource:@"Students" ofType:@"xml"];

NSData * studentData = [NSData dataWithContentsOfFile:studentPath];

//从文档中读出完整的XML数据,在内存中形成完整的属性结构

NSError * error = nil;

GDataXMLDocument * document = [[GDataXMLDocument alloc] initWithData:studentData options:0 error:&error];

//读取XML文档数的根节点

GDataXMLElement * root = [document rootElement];

NSLog(@" root ========== %@",root);

//获取根节点students下的所有子节点

NSArray * studentArray = [root elementsForName:@"student"];

for (GDataXMLElement * student in studentArray) {

GDataXMLElement * nameElement = [student elementsForName:@"name"].lastObject;

NSString * nameString = [nameElement stringValue];

GDataXMLElement * numberElement = [student elementsForName:@"number"].lastObject;

NSString * numberString = [numberElement stringValue];

GDataXMLElement * sexElement = [student elementsForName:@"sex"].lastObject;

NSString * sexString = [sexElement stringValue];

GDataXMLElement * ageElement = [student elementsForName:@"sex"].lastObject;

NSString * ageString = [ageElement stringValue];

NSLog(@"name = %@, number = %@, sex = %@, age = %@", nameString,numberString,sexString,ageString);

}

//xpath 相对路径,(//name) 获取XML中所有name字段的值绝对路径 (student/name) 获取所有student下name的值

NSArray * nameArray = [root nodesForXPath:@"student/name" error:nil];

NSLog(@"name Array = %@",nameArray);

XML SAX解析

系统解析

- (void)requestWithUrlString:(NSString *)urlStr

{

NSURL *url = [NSURL URLWithString:urlStr];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];

[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:data];

xmlParser.delegate = self;

[xmlParser parse];

}];

}

#pragma mark - XMLParserDelegate

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict

{

NSLog(@"%s,%d,xxxxx = %@, qName = %@, attributes = %@",__FUNCTION__, __LINE__, elementName,qName,attributeDict);

}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName

{

NSLog(@"%s, %d,xxxx = %@", __FUNCTION__, __LINE__, elementName);

}

- (void)parser:(NSXMLParser *)parser didStartMappingPrefix:(NSString *)prefix toURI:(NSString *)namespaceURI

{

NSLog(@"%s,%d,xxxxx = %@",__FUNCTION__, __LINE__,prefix);

}

- (void)parser:(NSXMLParser *)parser foundComment:(NSString *)comment

{

NSLog(@"%s,%d,xxxxx = %@",__FUNCTION__, __LINE__, comment);

}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string

{

NSLog(@"%s,%d,xxxxx = %@",__FUNCTION__, __LINE__, string);

}

多线程

@implementation ViewController

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

//获取主线程对象

NSLog(@"main thread = %@",[NSThread mainThread]);

UIButton * button = [UIButton buttonWithType:UIButtonTypeSystem];

button.frame = CGRectMake(130, 420, 80, 30);

[self.view addSubview:button];

self.view.backgroundColor = [UIColor lightGrayColor];

[button setTitle:@"输出" forState:UIControlStateNormal];

[button addTarget:self action:@selector(didClickButtonAction) forControlEvents:UIControlEventTouchUpInside];

UIButton * threadButton = [UIButton buttonWithType:UIButtonTypeSystem];

threadButton.frame = CGRectMake(50, 100, 200, 30);

[self.view addSubview:threadButton];

[threadButton setTitle:@"NSThread(detach)" forState:UIControlStateNormal];

[threadButton addTarget:self action:@selector(didClickThreadButtonAction) forControlEvents:UIControlEventTouchUpInside];

UIButton * invocationOperationButton = [UIButton buttonWithType:UIButtonTypeSystem];

invocationOperationButton.frame = CGRectMake(10, 150, 200, 30);

[self.view addSubview:invocationOperationButton];

[invocationOperationButton setTitle:@"invocationOperation" forState:UIControlStateNormal];

[invocationOperationButton addTarget:self action:@selector(didClickInvocationOperationButtonAction) forControlEvents:UIControlEventTouchUpInside];

UIButton * blockOperationButton = [UIButton buttonWithType:UIButtonTypeSystem];

blockOperationButton.frame = CGRectMake(10 , 190, 200, 30);

[self.view addSubview:blockOperationButton];

[blockOperationButton setTitle:@"blockOperation" forState:UIControlStateNormal];

[blockOperationButton addTarget:self action:@selector(didClickBlockOperationButtonAction) forControlEvents:UIControlEventTouchUpInside];

UIButton * operationQueueButton = [UIButton buttonWithType:UIButtonTypeSystem];

operationQueueButton.frame = CGRectMake(50, 330, 200, 30);

[self.view addSubview:operationQueueButton];

[operationQueueButton setTitle:@"operationQueue" forState:UIControlStateNormal];

[operationQueueButton addTarget:self action:@selector(didClickOperationQueueButtonAction) forControlEvents:UIControlEventTouchUpInside];

UIButton * nsobjectButton = [UIButton buttonWithType:UIButtonTypeSystem];

nsobjectButton.frame = CGRectMake(50, 370, 200, 30);

[self.view addSubview:nsobjectButton];

[nsobjectButton setTitle:@"NSObject" forState:UIControlStateNormal];

[nsobjectButton addTarget:self action:@selector(didClickNSObjectButtonAction) forControlEvents:UIControlEventTouchUpInside];

nsobjectButton.backgroundColor = [UIColor greenColor];

//定时器,自动循环执行, 自动添加到主线程的RunLoop中循环(因为viewDidLoad是在主线程中执行,因此timer对象是添加到主线程的runloop中,主线程的runloop一直处于运动状态

// [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(didClickTimerAcion) userInfo:nil repeats:YES];

// //创建一个NSTimer对象,手动添加到runloop中

// NSTimer * timer = [NSTimer timerWithTimeInterval:0.5 target:self selector:@selector(didClickTimerAcion) userInfo:nil repeats:YES];

// [timer fire];

// [[NSRunLoop mainRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];

}

- (void)didClickNSObjectButtonAction

{

NSString * urlString = @"http://d.hiphotos.baidu.com/image/w%3D2048/sign=232a6514be315c6043956cefb989ca13/c83d70cf3bc79f3d3b082d31b8a1cd11738b29c2.jpg";

[self performSelectorInBackground:@selector(downloadImage:) withObject:urlString];

}

//在子线程中实现同步连接下载图片

- (void)downloadImage:(NSString *)urlString

{

@autoreleasepool {

//同步执行

NSData * data = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];

NSLog(@"data = %@",data);

//从子线程发出消息,在主线程执行某些操作

[self performSelectorOnMainThread:@selector(showImage:) withObject:data waitUntilDone:YES];

}

//在主线程中,将子线程中下载得到的图像,显示在UIImageView上

- (void)showImage:(NSData *)data

{

UIImage * image = [UIImage imageWithData:data];

UIImageView * imageView = [[UIImageView alloc] initWithImage:image];

[self.view addSubview:imageView];

[imageView release];

}

- (void)didClickInvocationOperationButtonAction

{

//封装好哪个对象要执行哪个方法,//

NSInvocationOperation * operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(didClickButtonAction) object:nil];

//创建操作队列 //操作队列可以暂停,暂时挂起,

NSOperationQueue * queue = [[NSOperationQueue alloc] init];

//操作对象添加到操作队列中 // 队列特点先进先出

[queue addOperation:operation];

[operation release];

[queue release];

}

- (void)didClickBlockOperationButtonAction

{

//在子线程中需要执行的任务,当子线程开启运行状态时,才会执行

NSBlockOperation * blockOperation = [NSBlockOperation blockOperationWithBlock:^{

[self didClickButtonAction];

}];

//创建操作队列,

NSOperationQueue * queue = [[NSOperationQueue alloc] init];

// [queue addOperation:blockOperation];

[queue addOperationWithBlock:^{

[self didClickButtonAction];

}];

//操作队列的最大并发数 //同时执行的操作对象,最多同时执行3个,

[queue setMaxConcurrentOperationCount:3];

}

- (void)didClickOperationQueueButtonAction

{

}

- (void)didClickTimerAcion

{

NSLog(@"-------");

}

//创建另一个线程(子线程),帮助主线程完成某个任务

- (void)didClickThreadButtonAction

{

//创建子线程,子线程自动进入等待启动状态

//给子线程分配任务

// [NSThread detachNewThreadSelector:@selector(didClickButtonAction) toTarget:self withObject:nil];

//实例方法创建子线程,需要手动开启子线程

NSThread * thread = [[NSThread alloc] initWithTarget:self selector:@selector(didClickButtonAction) object:nil];

[thread start];

}

//任务按顺序输出从 0 ~ 6553500000 的所有值

- (void)didClickButtonAction

{

//在多线程方法中需要添加自动释放池,否则会造成内存泄露,因为子线程管理的任务执行完成后,子线程会被弃用//主线程默认添加自动释放池,

@autoreleasepool {

// //主线程的runloop默认是开启的,子线程的runloop默认是关闭的,如果有需要,需要手动开启

// //如果子线程的runloop开启,子线程不会被销毁,

// [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(didClickTimerAcion) userInfo:nil repeats:YES];

// [[NSRunLoop currentRunLoop] run];

// //是子线程还是主线程执行

// NSLog(@"%d",[NSThread isMainThread]);

// //获取执行管理方法的线程对象

// NSThread * thread = [NSThread currentThread];

// NSLog(@"thread = %@",thread);

// //当前线程休眠10秒

// [NSThread sleepForTimeInterval:10.0f];

for (NSInteger i = 0; i < 6553500000; i++) {

NSLog(@"i = %ld",i);

}

GCD 队列

@implementation ViewController

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

UIButton * globalButton = [UIButton buttonWithType:UIButtonTypeSystem];

globalButton.frame = CGRectMake(10, 100, 100, 30);

[self.view addSubview:globalButton];

[globalButton setTitle:@"Global" forState:UIControlStateNormal];

[globalButton addTarget:self action:@selector(didClickGlobalButtonAction) forControlEvents:UIControlEventTouchUpInside];

UIButton * customButton = [UIButton buttonWithType:UIButtonTypeSystem];

customButton.frame = CGRectMake(150, 100, 100, 30);

[self.view addSubview:customButton];

[customButton setTitle:@"Custom" forState:UIControlStateNormal];

[customButton addTarget:self action:@selector(didClickCustomButtonButtonAction) forControlEvents:UIControlEventTouchUpInside];

}

- (void)didClickGlobalButtonAction

{

//获取全局队列,添加任务,这个任务由全局队列创建子线程,开启执行

dispatch_queue_t globalQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

dispatch_async(globalQueue, ^{

NSLog(@"%d",[NSThread isMainThread]);

//这个block执行时,是在子线程中

//建立同步连接,获取图片

NSString * urlString = @"http://d.hiphotos.baidu.com/image/w%3D2048/sign=232a6514be315c6043956cefb989ca13/c83d70cf3bc79f3d3b082d31b8a1cd11738b29c2.jpg";

NSData * data = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];

NSLog(@"data = %@",data);

//图像获取成功后,将图片显示在UI上(这个任务必须在主线程完成)

//找主队列,添加任务

dispatch_async(dispatch_get_main_queue(), ^{

UIImage * image = [UIImage imageWithData:data];

UIImageView * imageView = [[UIImageView alloc] initWithImage:image];

[self.view addSubview:imageView];

[imageView release];

});

}

- (void)didClickCustomButtonButtonAction

{

//自定义队列/ 创建queue, 参数1. 名字, 参数2. 并行

dispatch_queue_t myConcurrentQueue = dispatch_queue_create("xiaoke_queue", DISPATCH_QUEUE_CONCURRENT);

//添加任务

dispatch_async(myConcurrentQueue, ^{

NSString * urlString = @"http://d.hiphotos.baidu.com/image/w%3D2048/sign=232a6514be315c6043956cefb989ca13/c83d70cf3bc79f3d3b082d31b8a1cd11738b29c2.jpg";

//子线程获取数据

NSData * data = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];

//主线程显示imageVIew

dispatch_async(dispatch_get_main_queue(), ^{

UIImage * image = [UIImage imageWithData:data];

UIImageView * imageView = [[UIImageView alloc] initWithImage:image];

imageView.frame = self.view.frame;

[self.view addSubview:imageView];

[imageView release];

});

dispatch_release(myConcurrentQueue);

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end

核心动画

View层动画

@implementation FirstViewController

- (void)viewDidLoad

{

[super viewDidLoad];

_showImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"小白"]];

_showImageView.frame = CGRectMake(60, 30, 200, 200);

[self.view addSubview:_showImageView];

[_showImageView release];

_fromView = [[UIView alloc] initWithFrame:_showImageView.bounds];

_fromView.backgroundColor = [UIColor redColor];

[_showImageView addSubview:_fromView];

_toView = [[UIView alloc] initWithFrame:_showImageView.bounds];

_toView.backgroundColor = [UIColor greenColor];

// [_showImageView addSubview:_toView];

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

// 使用Context实现视图的基本属性的动画效果

- (IBAction)didClickUIViewAttributeButtonAction:(id)sender {

//imageView以动画效果展示位置移动,修改center

//1. 开始设置动画参数1:动画名字参数2:类型空指针,给代理方法传值

[UIView beginAnimations:@"center" context:_showImageView];

//2. 动画设置

//设置动画时间

[UIView setAnimationDuration:1];

//设置动画的重复次数

// [UIView setAnimationRepeatCount:2];

//设置往返 //获取view动画开始之前的属性

[UIView setAnimationWillStartSelector:@selector(animationWillStart:context:)];

//获取view动画结束时候的属性

[UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];

//view动画设置代理

[UIView setAnimationDelegate:self];

//设置图片中心点

_showImageView.center = CGPointMake(200, 200);

//设置动画过程中透明度

_showImageView.alpha = 0.3;

//3. 提交动画设置,开始执行动画

[UIView commitAnimations];

}

- (void)animationWillStart:(NSString *)animationID context:(void *)context

{

NSLog(@"animationID = %@",animationID);

NSLog(@"context = %@",context);

}

- (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context

{

NSLog(@"animationID = %@",animationID);

NSLog(@"context = %@",context);

//动画结束时候,让图片回到原始位置

[UIView beginAnimations:@"return" context:_showImageView];

[UIView setAnimationDuration:1.0];

_showImageView.center = CGPointMake(160, 130);

_showImageView.alpha = 1;

[UIView commitAnimations];

}

- (IBAction)didClickTranslationButtonAction:(id)sender {

//使用block实现动画

[UIView animateWithDuration:1.5 animations:^{

//通过设置UIView的transform属性,实现视图的移动

if (_mySwitch.isOn == YES) {

//这个方法基于上次的transform进行设置

_showImageView.transform = CGAffineTransformTranslate(_showImageView.transform, 50, 0);

}else{

//基于原始的transform进行设置

_showImageView.transform = CGAffineTransformMakeTranslation(-50, 0);

}

}];

}

- (void)dealloc {

[_mySwitch release];

[_fromView release];

[_toView release];

[super dealloc];

}

- (IBAction)didClickRotationButtonAction:(id)sender {

[UIView animateWithDuration:1.0 animations:^{

if (_mySwitch.isOn == YES) {

// 设置动画重复两次

[UIView setAnimationRepeatCount:2];

// [UIView setAnimationsEnabled:NO];

_showImageView.transform = CGAffineTransformRotate(_showImageView.transform, M_PI/2);

}else{

_showImageView.transform = CGAffineTransformMakeRotation(M_PI);

}

} completion:^(BOOL finished) {

NSLog(@"动画完成");

}];

}

- (IBAction)didClickScaleButtonAction:(id)sender {

[UIView animateWithDuration:1.0 delay:0.0 options:UIViewAnimationOptionAutoreverse animations:^{

if (_mySwitch.isOn == YES) {

_showImageView.transform = CGAffineTransformScale(_showImageView.transform, -1.0, 1.0);

}else{

_showImageView.transform = CGAffineTransformMakeScale(0.5, 0.5);

}

} completion:^(BOOL finished) {

}];

}

- (IBAction)didClickTransitonButtonAction:(id)sender {

// if (_fromView.superview != nil) {

// [UIView transitionWithView:_showImageView duration:1.0 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{

// [_fromView removeFromSuperview];

// [_showImageView addSubview:_toView];

// } completion:^(BOOL finished) {

// }];

// }else{

// [UIView transitionWithView:_showImageView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromBottom animations:^{

// [_toView removeFromSuperview];

// [_showImageView addSubview:_fromView];

// } completion:nil];

// }

// [UIView transitionWithView:_showImageView duration:1.0 bbbvb animations:^{

// [_showImageView exchangeSubviewAtIndex:0 withSubviewAtIndex:1];

// } completion:nil];

if (_fromView.superview != nil) {

[UIView transitionFromView:_fromView toView:_toView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromTop completion:^(BOOL finished) {

NSLog(@"???");

}];

}else{

[UIView transitionFromView:_toView toView:_fromView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromTop completion:^(BOOL finished) {

NSLog(@"ooo");

}];

}

@end

CoreAnimation layer层核心动画

#import "SecondViewController.h"

@interface SecondViewController ()

{

UIImageView * _showImageView;

}

@end

@implementation SecondViewController

- (void)viewDidLoad

{

[super viewDidLoad];

_showImageView = [[UIImageView alloc] initWithFrame:CGRectMake(50, 50, 200, 200)];

_showImageView.backgroundColor = [UIColor purpleColor];

[self.view addSubview:_showImageView];

[_showImageView release];

_showImageView.layer.masksToBounds = YES;

// _showImageView.layer.cornerRadius = 100.0;//圆角

_showImageView.layer.borderWidth = 2.0;//边框宽度

_showImageView.layer.borderColor = [UIColor greenColor].CGColor;//边框颜色

// _showImageView.labyer.shadowColor = [UIColor lightGrayColor].CGColor;//阴影颜色

// _showImageView.layer.shadowOffset = CGSizeMake(50, 50);//阴影偏移量

// _showImageView.layer.shadowRadius = 15;// 阴影半径

// _showImageView.layer.shadowOpacity = 1.0;// 阴影不透明度

// //锚点默认是视图的中心点,视图的旋转,缩放等操作是基于锚点操作 //position,是锚点到父视图原点的距离

// NSLog(@"anchorPoint = %@",NSStringFromCGPoint(_showImageView.layer.anchorPoint));

// NSLog(@"position = %@",NSStringFromCGPoint(_showImageView.layer.position));

// //给showImageView添加一个子图层

// CALayer * layer = [CALayer layer];

// layer.backgroundColor = [UIColor cyanColor].CGColor;

// [_showImageView.layer addSublayer:layer];

// layer.frame = CGRectMake(50, 50, 100, 100);

// layer.cornerRadius = 50;

NSLog(@"anchroPoint = %@",NSStringFromCGPoint(_showImageView.layer.anchorPoint));

NSLog(@"position = %@", NSStringFromCGPoint(_showImageView.layer.position));

_showImageView.layer.cornerRadius = 10.0f;

_showImageView.layer.borderColor = [UIColor redColor].CGColor;

_showImageView.layer.borderWidth = 10.0f;

_showImageView.layer.shadowColor = [UIColor blueColor].CGColor;

_showImageView.layer.shadowOffset = CGSizeMake(20, 20);

_showImageView.layer.shadowOpacity = 1.0f;

NSLog(@"anchorPoint = %@", NSStringFromCGPoint(_showImageView.layer.anchorPoint));

NSLog(@"position = %@",NSStringFromCGPoint(_showImageView.layer.position));

// CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"backgroundColor"];

// CABasicAnimation *animation2 = [CABasicAnimation animationWithKeyPath:@"transform.scale.y"];

// CABasicAnimation *animation3 = [CABasicAnimation animationWithKeyPath:@"opacity"];

// CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];

// animation.values = @[

// [NSValue valueWithCGPoint:CGPointMake(100, 100)],

// [NSValue valueWithCGPoint:CGPointMake(200, 150)],

// [NSValue valueWithCGPoint:CGPointMake(100, 200)],

// [NSValue valueWithCGPoint:CGPointMake(200, 250)]

// ];

// [_showImageView.layer addAnimation:animation forKey:@"position"];

// CATransition *animation = [CATransition animation];

// [animation setDuration:1.0];

// // 动画过渡类型

// animation.type = kCATransitionMoveIn;

// // 动画过渡方向

// animation.subtype = kCATransitionFromRight;

// [_showImageView.layer addAnimation:animation forKey:@"transition"];

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

}

- (IBAction)didClickCABasicButtonAction:(id)sender {

// //创建一个CABasic动画对象,参数为需要进行动画设置的 layer的属性名字

// CABasicAnimation * animation = [CABasicAnimation animationWithKeyPath:@"backgroundColor"];

// [animation setDuration:1.5];

// //CABasicAnimation 提供了两个属性,fromValue 和 toValue ,设置动画过程的起始值和结束值

// animation.fromValue = (id)[UIColor yellowColor].CGColor;

// animation.toValue = (id)[UIColor blackColor].CGColor;

// //把创建好的动画对象添加给 layer

// [_showImageView.layer addAnimation:animation forKey:@"背景颜色"];

// CABasicAnimation * animation = [CABasicAnimation animationWithKeyPath:@"opacity"];

// [animation setDuration:3.0];

// [animation setAutoreverses:YES];

// animation.fromValue = [NSNumber numberWithInt:1];

// animation.toValue = [NSNumber numberWithFloat:0.0];

// [_showImageView.layer addAnimation:animation forKey:@"不透明度"];

CABasicAnimation * animation = [CABasicAnimation animationWithKeyPath:@"transform.scale.y"];

[animation setDuration:2.0];

[animation setAutoreverses:YES];

animation.fromValue = [NSNumber numberWithFloat:1.0];

animation.toValue = [NSNumber numberWithFloat:0.5];

[_showImageView.layer addAnimation:animation forKey:@"scale.y"];

}

- (IBAction)didClickCAKeyFromeValueButtonAction:(id)sender {

CAKeyframeAnimation * animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];//layer的属性

animation.duration = 7.0;

//设置动画关键帧

animation.values = @[

[NSValue valueWithCGPoint:CGPointMake(100, 50)],

[NSValue valueWithCGPoint:CGPointMake(200, 100)],

[NSValue valueWithCGPoint:CGPointMake(100, 150)],

[NSValue valueWithCGPoint:CGPointMake(200, 100)],

[NSValue valueWithCGPoint:CGPointMake(100, 50)]

];

[_showImageView.layer addAnimation:animation forKey:@"position"];

}

- (IBAction)didClickCAKeyFromePathButtonAction:(id)sender {

CAKeyframeAnimation * animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];

//创建一个空的路径对象 path

CGMutablePathRef path = CGPathCreateMutable(); //create 之后要 release

//设置路径初始点

CGPathMoveToPoint(path, NULL, 50, 50);

//设置路径经过的点

CGPathAddLineToPoint(path, NULL, 200, 50);

CGPathAddLineToPoint(path, NULL, 200, 250);

//将路径赋给动画对象的path

animation.path = path;

//设置动画时间

[animation setDuration:2.5];

//给_showImageView的layer层添加动画

[_showImageView.layer addAnimation:animation forKey:@"position"];

//释放路径对象

CGPathRelease(path);

}

- (IBAction)didClickCAGroupButtonAction:(id)sender {

//group动画对象

// CAAnimationGroup * group = [CAAnimationGroup animation];

CAKeyframeAnimation * animation1 = [CAKeyframeAnimation animationWithKeyPath:@"position"];

animation1.values = @[[NSValue valueWithCGPoint:CGPointMake(200, 200)],

[NSValue valueWithCGPoint:CGPointMake(80, 120)],

[NSValue valueWithCGPoint:CGPointMake(100, 300)],

[NSValue valueWithCGPoint:CGPointMake(60, 70)],

[NSValue valueWithCGPoint:CGPointMake(160, 50)]];

[_showImageView.layer addAnimation:animation1 forKey:@"position"];

CABasicAnimation *animation2 = [CABasicAnimation animationWithKeyPath:@"transform.scale.y"];

animation2.fromValue = [NSNumber numberWithFloat:1.0];

animation2.toValue = [NSNumber numberWithFloat:0.5];

[_showImageView.layer addAnimation:animation2 forKey:@"scale"];

CAAnimationGroup * group = [CAAnimationGroup animation];

[group setDuration:4.0];

group.animations = @[animation1,animation2];

[_showImageView.layer addAnimation:group forKey:@"组"];

}

- (IBAction)didClickCATransitionButtonAction:(id)sender {

CATransition * animation = [CATransition animation];

animation.duration = 1.0;

// animation.type = kCATransitionPush;

// animation.type = @"cameraIrisHollowOpen";

// 动画过渡类型

animation.type = @"cameraIrisHollowClose";

// 动画过渡方向

animation.subtype = kCATransitionFromRight;

// animation.startProgresss = 0.0;

// animation.endProgress = 0.3; //动画实现位置,

[_showImageView.layer addAnimation:animation forKey:@""];

}

地图定位

#import <UIKit/UIKit.h>

#import <MapKit/MapKit.h>

#import "YellowViewController.h"

@interface RootViewController : UIViewController<MKMapViewDelegate>

@property(nonatomic,retain) MKMapView *mapView;

@property(nonatomic,retain) NSString *placrStr;

@property(nonatomic,retain) MKPinAnnotationView *annotationView;

@property(nonatomic,retain) YellowViewController *yellowVc;

@end

.mmmmmmmmmmmmmmmmmmm

#import "RootViewController.h"

#import "MyAnnotation.h"

#import "MyOverlayRenderer.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

// Custom initialization

}

return self;

}

- (void)viewWillAppear:(BOOL)animated

{

self.navigationController.navigationBar.hidden = YES;

}

- (void)viewDidLoad

{

[super viewDidLoad];

self.yellowVc = [[YellowViewController alloc] init];

// Do any additional setup after loading the view.

self.mapView = [[MKMapView alloc] initWithFrame:self.view.frame];

[self.view addSubview:_mapView];

self.mapView.delegate = self;

//我的位置button

UIButton *abutton = [UIButton buttonWithType:UIButtonTypeRoundedRect];

abutton.frame = CGRectMake(0, 538, 60, 30);

abutton.backgroundColor = [UIColor redColor];

[abutton setTitle:@"我的位置" forState:UIControlStateNormal];

[abutton addTarget:self action:@selector(myLocation) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:abutton];

//1号位置button

UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

button1.frame = CGRectMake(65, 538, 60, 30);

button1.backgroundColor = [UIColor redColor];

[button1 setTitle:@"1号位置" forState:UIControlStateNormal];

[button1 addTarget:self action:@selector(one) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:button1];

//2号位置

UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

button2.frame = CGRectMake(130, 538, 60, 30);

button2.backgroundColor = [UIColor redColor];

[button2 setTitle:@"2号位置" forState:UIControlStateNormal];

[button2 addTarget:self action:@selector(two) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:button2];

//连线的button

UIButton *button3 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

button3.frame = CGRectMake(200, 538, 90, 30);

button3.backgroundColor = [UIColor redColor];

[button3 setTitle:@"1和2导航" forState:UIControlStateNormal];

[button3 addTarget:self action:@selector(three) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:button3];

}

- (void)three

{

CLLocationCoordinate2D fromCoordinate = CLLocationCoordinate2DMake(23.134844,113.317290);

CLLocationCoordinate2D toCoordinate = CLLocationCoordinate2DMake(23.114844,113.317290);

MKPlacemark *fromPlacemark = [[MKPlacemark alloc] initWithCoordinate:fromCoordinate addressDictionary:nil];

MKPlacemark *toPlacemark = [[MKPlacemark alloc] initWithCoordinate:toCoordinate addressDictionary:nil];

MKMapItem *fromItem = [[MKMapItem alloc] initWithPlacemark:fromPlacemark];

MKMapItem *toItem = [[MKMapItem alloc] initWithPlacemark:toPlacemark];

MKDirectionsRequest *request = [[MKDirectionsRequest alloc] init];

request.source = fromItem;

request.destination = toItem;

request.requestsAlternateRoutes = YES;

MKDirections *directions = [[MKDirections alloc] initWithRequest:request];

[directions calculateDirectionsWithCompletionHandler:

^(MKDirectionsResponse *response, NSError *error) {

if (error) {

NSLog(@"error:%@", error);

}

else {

MKRoute *route = response.routes[0];

[self.mapView addOverlay:route.polyline];

}

}];

}

//---------------------------------------------------------------------

- (void)myLocation

{

self.mapView.showsUserLocation = YES;

}

- (void)one

{

//self.mapView removeAnnotations:<#(NSArray *)#>

//设置地图中心

CLLocationCoordinate2D coordinate;

coordinate.latitude = 23.134844;

coordinate.longitude = 113.317290;

MyAnnotation *ann = [[MyAnnotation alloc] init];

ann.coordinate = coordinate;

ann.myTitle = @"吴品无品五品五品茶";

ann.mySubtitle = @"meipin";

//触发viewForAnnotation

[_mapView addAnnotation:ann];

//添加多个

//[mapView addAnnotations]

//设置显示范围

MKCoordinateRegion region;

region.span.latitudeDelta = 0.001;

region.span.longitudeDelta = 0.001;

region.center = coordinate;

// 设置显示位置(动画)

[_mapView setRegion:region animated:YES];

// 设置地图显示的类型及根据范围进行显示

[_mapView regionThatFits:region];

self.mapView.showsUserLocation = NO;

}

- (void)two

{

//解析

CLLocation *locNow = [[CLLocation alloc]initWithLatitude:23.114844 longitude:113.317290];

CLGeocoder *geocoder=[[CLGeocoder alloc] init];

[geocoder reverseGeocodeLocation:locNow completionHandler:^(NSArray *placemarks,NSError *error)

{

CLPlacemark *placemark=[placemarks objectAtIndex:0];

NSLog(@"name:%@\n country:%@\n postalCode:%@\n ISOcountryCode:%@\n ocean:%@\n inlandWater:%@\n locality:%@\n subLocality:%@\n administrativeArea:%@\n subAdministrativeArea:%@\n thoroughfare:%@\n subThoroughfare:%@\n",placemark.name,placemark.country,placemark.postalCode,placemark.ISOcountryCode,placemark.ocean,placemark.inlandWater,placemark.administrativeArea,placemark.subAdministrativeArea,placemark.locality,placemark.subLocality,placemark.thoroughfare,placemark.subThoroughfare);

CLLocationCoordinate2D coordinate;

coordinate.latitude = 23.114844;

coordinate.longitude = 113.317290;

MyAnnotation *annotation = [[MyAnnotation alloc] init];

//设置中心

annotation.coordinate = coordinate;

//触发viewForAnnotation

[self.mapView addAnnotation:annotation];

//设置显示范围

MKCoordinateRegion region;

region.span.latitudeDelta = 0.001;

region.span.longitudeDelta = 0.001;

region.center = coordinate;

// 设置显示位置(动画)

[_mapView setRegion:region animated:YES];

// 设置地图显示的类型及根据范围进行显示

[_mapView regionThatFits:region];

self.mapView.showsUserLocation = NO;

annotation.myTitle =placemark.name;

//annotation.mySubtitle = [placemark.locality stringByAppendingString:placemark.subLocality];

//[placemark.locality stringByAppendingString:placemark.subAdministrativeArea];

}];

}

//当前位置location代理方法

- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation

{

CLLocationCoordinate2D loc = [userLocation coordinate];

NSLog(@"%f,%f",loc.latitude,loc.longitude);

//放大地图到自身的经纬度位置。

MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(loc, 0.1, 0.1);

[self.mapView setRegion:region animated:YES];

}

- (void)mapViewDidStopLocatingUser:(MKMapView *)mapView

{

}

//map代理方法

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation

{

//如果是当前位置,无需更改

if ([annotation isKindOfClass:[MKUserLocation class]])

{

return nil;

}

if ([annotation isKindOfClass:[MyAnnotation class]])

{

NSString *annotationViewId=@"meipinAnnotationView";

_annotationView = (MKPinAnnotationView *)

[mapView dequeueReusableAnnotationViewWithIdentifier:annotationViewId];

if (_annotationView==nil){

//MKAnnotationView是使用自定义的图片.MKPinAnnotationView是定义系统默认的大头针

_annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annotationViewId];

_annotationView.canShowCallout = YES;

UIImageView *leftView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"2.png"]];

_annotationView.leftCalloutAccessoryView = leftView;

_annotationView.animatesDrop = YES;

//设置右按钮

UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];

[rightButton addTarget:nil action:nil forControlEvents:UIControlEventTouchUpInside];

_annotationView.rightCalloutAccessoryView = rightButton;

}

return _annotationView;

}

// user tapped the disclosure button in the callout

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control

{

// here we illustrate how to detect which annotation type was clicked on for its callout

id <MKAnnotation> annotation = [view annotation];

if ([annotation isKindOfClass:[MyAnnotation class]])

{

[self.navigationController pushViewController:self.yellowVc animated:YES];

NSLog(@"123456789");

}

- (MKOverlayRenderer *)mapView:(MKMapView *)mapView

rendererForOverlay:(id<MKOverlay>)overlay

{

MKPolylineRenderer *renderer = [[MKPolylineRenderer alloc] initWithOverlay:overlay];

renderer.lineWidth = 5.0;

renderer.strokeColor = [UIColor purpleColor];

return renderer;

}

- (void)mapView:(MKMapView *)mapView didAddOverlayRenderers:(NSArray *)renderers

{

}

- (void)mapView:(MKMapView *)mapView didAddAnnotationViews:(NSArray *)views

{

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end

CoreData

CoreDataManager 单例封装

@interface CoreDataManager : NSObject

@property (nonatomic, strong) NSManagedObjectContext *managedObjectContext; // 托管对象上下文

/**

* CoreDataManager 单例对象

* @return

+ (CoreDataManager *)defaultManager;

@end

.mmmmmmmmmmmm

#import "CoreDataManager.h"

@interface CoreDataManager ()

@property (nonatomic, strong) NSPersistentStoreCoordinator *persistentStoreCoordinator; // 持久化存储协调器

@property (nonatomic, strong) NSManagedObjectModel *managedObjectModel; // 托管对象模型

@end

@implementation CoreDataManager

+ (CoreDataManager *)defaultManager

{

static CoreDataManager *manager = nil;

@synchronized(self){

if (manager == nil) {

manager = [[self alloc] init];

}

return manager;

}

- (NSManagedObjectContext *)managedObjectContext

{

// 如果托管对象上下文不为空的话直接返回

if (_managedObjectContext != nil) {

return _managedObjectContext;

}

// 不为空创建一个新的对象

_managedObjectContext = [[NSManagedObjectContext alloc] init];

// 为脱光对象上下文添加持久化存储协调器

[_managedObjectContext setPersistentStoreCoordinator:self.persistentStoreCoordinator];;

return _managedObjectContext;

}

- (NSPersistentStoreCoordinator *)persistentStoreCoordinator

{

if (_persistentStoreCoordinator != nil) {

return _persistentStoreCoordinator;

}

// 获取我们想要创建数据库的路径

NSURL *documentURL = [[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask].lastObject;

NSURL *fileURL = [documentURL URLByAppendingPathComponent:@"LOClass.sqlite"];

// 根据托管对象模型创建数据持久化存储协调器

_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:self.managedObjectModel];

// 数据持久化存储协调器添加存储类型和存储路径

// options参数如果做数据库版本迁移, options必须要填写

// 字典key值含义 1: 持久化存储数据自动迁移

// 2: 自动推断数据模型映射关系

NSError *error = nil;

[_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:fileURL options: @{NSMigratePersistentStoresAutomaticallyOption:@YES, NSInferMappingModelAutomaticallyOption:@YES} error:&error];

if (error != nil) {

NSLog(@"%s, %d error = %@",__FUNCTION__, __LINE__, [error description]);

abort();

}

return _persistentStoreCoordinator;

}

- (NSManagedObjectModel *)managedObjectModel

{

if (_managedObjectModel != nil) {

return _managedObjectModel;

}

// 获取实体在工程包中的路径

NSURL *momdURL = [[NSBundle mainBundle] URLForResource:@"LOClassModel" withExtension:@"momd"];

// 根据可视化数据模型创建托管对象模型

_managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:momdURL];

return _managedObjectModel;

}

@end

数据增删改

增:

// 创建实体描述对象

NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@"LOClassEntity" inManagedObjectContext:[CoreDataManager defaultManager].managedObjectContext];

// 根据实体描述对象创建LOClass 实例对象

LOClass *loclass = [[LOClass alloc] initWithEntity:entityDescription insertIntoManagedObjectContext:[CoreDataManager defaultManager].managedObjectContext];

[[CoreDataManager defaultManager].managedObjectContext save:nil];

删

[[CoreDataManager defaultManager].managedObjectContext deleteObject:loclass];

NSError *error = nil;

[[CoreDataManager defaultManager].managedObjectContext save:&error];

改

loclass.name = [NSString stringWithFormat:@"第%d班",arc4random()%10];

NSError *error = nil;

// 保存数据数据持久化

[[CoreDataManager defaultManager].managedObjectContext save:&error];

查

NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"LOStudentEntity"];

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"loclass.name = %@",self.loclass.name];

fetchRequest.predicate = predicate;

NSError *error = nil;

NSArray *loStudentArray = [[CoreDataManager defaultManager].managedObjectContext executeFetchRequest:fetchRequest error:&error];

推送

UILocalNotification *localNotification = [[UILocalNotification alloc] init];

//五秒钟之后执行

localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:5];

//提示内容

localNotification.alertBody = @"该起床了";

//设置音效

localNotification.soundName = @"管钟琴.caf";

//设置启动图片

localNotification.alertLaunchImage = @"link_page_2";

//设置确认按钮的标题

localNotification.alertAction = @"啦啦啦";

localNotification.applicationIconBadgeNumber = 10;

//调用本地通知

[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

常用宏定义

log输出

#define NEED_OUTPUT_LOG 0

#if NEED_OUTPUT_LOG

#define SLog(xx, ...) NSLog(xx, ##__VA_ARGS__)

#define SLLog(xx, ...) NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)

#define SLLogRect(rect) \

SLLog(@"%s x=%f, y=%f, w=%f, h=%f", #rect, rect.origin.x, rect.origin.y, \

rect.size.width, rect.size.height)

#define SLLogPoint(pt) \

SLLog(@"%s x=%f, y=%f", #pt, pt.x, pt.y)

#define SLLogSize(size) \

SLLog(@"%s w=%f, h=%f", #size, size.width, size.height)

#define SLLogRange(range) \

SLLog(@"%s loc=%ld, len=%ld",#range,range.location,range.length)

#define SLLogColor(_COLOR) \

SLLog(@"%s h=%f, s=%f, v=%f", #_COLOR, _COLOR.hue, _COLOR.saturation, _COLOR.value)

#define SLLogSuperViews(_VIEW) \

{ for (UIView* view = _VIEW; view; view = view.superview) { SLLog(@"%@", view); } }

#define SLLogSubViews(_VIEW) \

{ for (UIView* view in [_VIEW subviews]) { SLLog(@"%@", view); } }

#else

#define SLog(xx, ...) ((void)0)

#define SLLog(xx, ...) ((void)0)

#endif

//———————————————————————颜色类———————————————————————————-----—————————————

// rgb颜色转换（16进制->10进制）

#define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

//带有RGBA的颜色设置

#define COLOR(R, G, B, A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A]

// 获取RGB颜色

#define RGBA(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a]

#define RGB(r,g,b) RGBA(r,g,b,1.0f)

//背景色

#define BACKGROUND_COLOR [UIColor colorWithRed:242.0/255.0 green:236.0/255.0 blue:231.0/255.0 alpha:1.0]

//清除背景色

#define CLEARCOLOR [UIColor clearColor]

#pragma mark - color functions

#define RGBCOLOR(r,g,b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:1]

#define RGBACOLOR(r,g,b,a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)]

// 安全释放

#define RELEASE_SAFELY(__Pointer) do{[__Pointer release],__Pointer = nil;} while(0)

// 屏幕的物理高度

#define ScreenHeight [UIScreen mainScreen].bounds.size.height

// 屏幕的物理宽度

#define ScreenWidth [UIScreen mainScreen].bounds.size.width

// 调试

#define NSLOG_FUNCTION NSLog(@"%s,%d",__FUNCTION__,__LINE__)

系统设备

1//----------------------系统----------------------------

3//获取系统版本

4#define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]

5#define CurrentSystemVersion [[UIDevice currentDevice] systemVersion]

7//获取当前语言

8#define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

10 //判断是否 Retina屏、设备是否%fhone 5、是否是iPad

11 #define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)

12 #define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)

13 #define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

16 //判断是真机还是模拟器

17 #if TARGET_OS_IPHONE

18 //iPhone Device

19 #endif

21 #if TARGET_IPHONE_SIMULATOR

22 //iPhone Simulator

23 #endif

25 //检查系统版本

26 #define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)

27 #define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)

28 #define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)

29 #define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)

30 #define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

图片

31 //读取本地图片

32 #define LOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]]

34 //定义UIImage对象

35 #define IMAGE(A) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:A ofType:nil]]

37 //定义UIImage对象

38 #define ImageNamed(_pointer) [UIImage imageNamed:[UIUtil imageName:_pointer]]

//建议使用前两种宏定义,性能高于后者