GifView.h/***  调用结束就开始播放动画，如果需要用户指定何时播放的话，只需要把timer的开始放到合适的位置。通过对CFDictonaryRaf 也就是gifProperties的改变，我们还可以控制动画是否循环播放以及循环多少次停止。通过对index的改变也可以控制动画从某帧开始播放。同理，同时改变index和count的话，也可以控制从某帧到某帧的播放。注意：- (void)stopGif;之后才可以退出这个类。否则timer不会关闭，产生内存泄露。*/#import <UIKit/UIKit.h>
#import <ImageIO/ImageIO.h>@interface GifView : UIView {CGImageSourceRef gif; // 保存gif动画NSDictionary *gifProperties;  // 保存gif动画属性size_t index;// gif动画播放开始的帧序号size_t count;// gif动画的总帧数NSTimer *timer;// 播放gif动画所使用的timer
}- (id)initWithFrame:(CGRect)frame filePath:(NSString *)_filePath;
- (id)initWithFrame:(CGRect)frame data:(NSData *)_data;
- (void)stopGif;GifView.m

#import "GifView.h"
#import <QuartzCore/QuartzCore.h>@implementation GifView- (id)initWithFrame:(CGRect)frame filePath:(NSString *)_filePath{self = [super initWithFrame:frame];if (self) {gifProperties = [NSDictionary dictionaryWithObject:[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:0] forKey:(NSString *)kCGImagePropertyGIFLoopCount]forKey:(NSString *)kCGImagePropertyGIFDictionary];gif = CGImageSourceCreateWithURL((CFURLRef)[NSURL fileURLWithPath:_filePath], (CFDictionaryRef)gifProperties);count =CGImageSourceGetCount(gif);timer = [NSTimer scheduledTimerWithTimeInterval:0.12 target:self selector:@selector(play) userInfo:nil repeats:YES];[timer fire];}return self;
}- (id)initWithFrame:(CGRect)frame data:(NSData *)_data{self = [super initWithFrame:frame];if (self) {gifProperties = [NSDictionary dictionaryWithObject:[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:0] forKey:(NSString *)kCGImagePropertyGIFLoopCount]forKey:(NSString *)kCGImagePropertyGIFDictionary];//        gif = CGImageSourceCreateWithURL((CFURLRef)[NSURL fileURLWithPath:_filePath], (CFDictionaryRef)gifProperties);gif = CGImageSourceCreateWithData((CFDataRef)_data, (CFDictionaryRef)gifProperties);count =CGImageSourceGetCount(gif);timer = [NSTimer scheduledTimerWithTimeInterval:0.12 target:self selector:@selector(play) userInfo:nil repeats:YES];[timer fire];}return self;
}-(void)play
{index ++;index = index%count;CGImageRef ref = CGImageSourceCreateImageAtIndex(gif, index, (CFDictionaryRef)gifProperties);self.layer.contents = (__bridge id)ref;CFRelease(ref);
}
-(void)removeFromSuperview
{NSLog(@"removeFromSuperview");[timer invalidate];timer = nil;[super removeFromSuperview];
}
- (void)dealloc {NSLog(@"dealloc");CFRelease(gif);
}
- (void)stopGif
{[timer invalidate];timer = nil;
}

加载Gif的三种方式：（从网络或者本地）

- (NSData *)loadDataForIndex:(NSInteger)index {NSData *data = nil;if (index == 0) {//网络data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://s14.sinaimg.cn/mw690/005APVsyzy6MFOsVFfv5d&690"]];}else {//本地data = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"run" ofType:@"gif"]];}return data;
}

1.GifView

    //第三方GifView(实现gif动画播放是通过将动画文件读取到CGImageSourceRef，然后用NSTimer来播放的。)//- (id)initWithFrame:(CGRect)frame filePath:(NSString *)_filePath;GifView *dataView = [[GifView alloc] initWithFrame:CGRectMake(0, 0, 100, 100) data:data];[self.view addSubview:dataView];
//    [dataView stopGif];

2.webView(不会出现内存问题)

    //webViewUIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 120, 100, 100)];webView.backgroundColor = [UIColor redColor];webView.scalesPageToFit = YES;[webView loadData:data MIMEType:@"image/gif" textEncodingName:nil baseURL:nil];[self.view addSubview:webView];

3.帧动画

- (void)runGIFForImage {UIImageView *gifImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 240, 100, 100)];NSArray *gifArray = [NSArray arrayWithObjects:[UIImage imageNamed:@"1"],[UIImage imageNamed:@"2"],[UIImage imageNamed:@"3"],[UIImage imageNamed:@"4"],[UIImage imageNamed:@"5"],[UIImage imageNamed:@"6"],[UIImage imageNamed:@"7"],[UIImage imageNamed:@"8"],[UIImage imageNamed:@"9"],[UIImage imageNamed:@"10"],[UIImage imageNamed:@"11"],[UIImage imageNamed:@"12"],[UIImage imageNamed:@"13"],[UIImage imageNamed:@"14"],[UIImage imageNamed:@"15"],[UIImage imageNamed:@"16"],[UIImage imageNamed:@"17"],[UIImage imageNamed:@"18"],[UIImage imageNamed:@"19"],[UIImage imageNamed:@"20"],[UIImage imageNamed:@"21"],[UIImage imageNamed:@"22"],nil];gifImageView.animationImages = gifArray; //动画图片数组gifImageView.animationDuration = 5; //执行一次完整动画所需的时长gifImageView.animationRepeatCount = 999;  //动画重复次数[gifImageView startAnimating];[self.view addSubview:gifImageView];
}