iOS之Gif图片展示的几种方式

//动态展示GIF图片-WebView-(void)showGifImageWithWebView{ //读取gif图片数据 NSData *gifData = [NSData dataWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"earthGif" ofType:@"gif"]]; //UIWebView生成 UIWebView *imageWebView = [[UIWebView alloc] initWithFrame:CGRectMake(112, 302, 132, 102)]; //用户不可交互 imageWebView.userInteractionEnabled = NO; //加载gif数据 [imageWebView loadData:gifData MIMEType:@"image/gif" textEncodingName:nil baseURL:nil]; //视图添加此gif控件 [self.view addSubview:imageWebView];}

#import <UIKit/UIKit.h>@interface UIImageView (Tool)/** 解析gif文件数据的方法 block中会将解析的数据传递出来 */-(void)getGifImageWithUrk:(NSURL *)url returnData:(void(^)(NSArray<UIImage *> * imageArray,NSArray<NSNumber *>*timeArray,CGFloat totalTime, NSArray<NSNumber *>* widths, NSArray<NSNumber *>* heights))dataBlock;/** 为UIImageView添加一个设置gif图内容的方法： */-(void)yh_setImage:(NSURL *)imageUrl;@end

//// UIImageView+Tool.m// OneHelper//// Created by qiuxuewei on 16/3/2.// Copyright © 2016年 邱学伟. All rights reserved.//#import "UIImageView+Tool.h"//要引入ImageIO库#import <ImageIO/ImageIO.h>@implementation UIImageView (Tool)//解析gif文件数据的方法 block中会将解析的数据传递出来-(void)getGifImageWithUrk:(NSURL *)url returnData:(void(^)(NSArray<UIImage *> * imageArray, NSArray<NSNumber *>*timeArray,CGFloat totalTime, NSArray<NSNumber *>* widths,NSArray<NSNumber *>* heights))dataBlock{ //通过文件的url来将gif文件读取为图片数据引用 CGImageSourceRef source = CGImageSourceCreateWithURL((CFURLRef)url, NULL); //获取gif文件中图片的个数 size_t count = CGImageSourceGetCount(source); //定义一个变量记录gif播放一轮的时间 float allTime=0; //存放所有图片 NSMutableArray * imageArray = [[NSMutableArray alloc]init]; //存放每一帧播放的时间 NSMutableArray * timeArray = [[NSMutableArray alloc]init]; //存放每张图片的宽度 （一般在一个gif文件中，所有图片尺寸都会一样） NSMutableArray * widthArray = [[NSMutableArray alloc]init]; //存放每张图片的高度 NSMutableArray * heightArray = [[NSMutableArray alloc]init]; //遍历 for (size_t i=0; i<count; i++) {  CGImageRef image = CGImageSourceCreateImageAtIndex(source, i, NULL);  [imageArray addObject:(__bridge UIImage *)(image)];  CGImageRelease(image);  //获取图片信息  NSDictionary * info = (__bridge NSDictionary*)CGImageSourceCopyPropertiesAtIndex(source, i, NULL);  CGFloat width = [[info objectForKey:(__bridge NSString *)kCGImagePropertyPixelWidth] floatValue];  CGFloat height = [[info objectForKey:(__bridge NSString *)kCGImagePropertyPixelHeight] floatValue];  [widthArray addObject:[NSNumber numberWithFloat:width]];  [heightArray addObject:[NSNumber numberWithFloat:height]];  NSDictionary * timeDic = [info objectForKey:(__bridge NSString *)kCGImagePropertyGIFDictionary];  CGFloat time = [[timeDic objectForKey:(__bridge NSString *)kCGImagePropertyGIFDelayTime]floatValue];  allTime+=time;  [timeArray addObject:[NSNumber numberWithFloat:time]]; } dataBlock(imageArray,timeArray,allTime,widthArray,heightArray);}//为UIImageView添加一个设置gif图内容的方法：-(void)yh_setImage:(NSURL *)imageUrl{ __weak id __self = self; [self getGifImageWithUrk:imageUrl returnData:^(NSArray<UIImage *> *imageArray, NSArray<NSNumber *> *timeArray, CGFloat totalTime, NSArray<NSNumber *> *widths, NSArray<NSNumber *> *heights) {  //添加帧动画  CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"contents"];  NSMutableArray * times = [[NSMutableArray alloc]init];  float currentTime = 0;  //设置每一帧的时间占比  for (int i=0; i<imageArray.count; i++) {   [times addObject:[NSNumber numberWithFloat:currentTime/totalTime]];   currentTime+=[timeArray[i] floatValue];  }  [animation setKeyTimes:times];  [animation setValues:imageArray];  [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];  //设置循环  animation.repeatCount= MAXFLOAT;  //设置播放总时长  animation.duration = totalTime;  //Layer层添加  [[(UIImageView *)__self layer]addAnimation:animation forKey:@"gifAnimation"]; }];}@end

-(void)showGifImageWithImageView{ UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(112, 342, 132, 102)]; NSURL * url = [[NSURL alloc]initFileURLWithPath:[[NSBundle mainBundle] pathForResource:@"earthGif.gif" ofType:nil]]; [imageView yh_setImage:url]; [self.view addSubview:imageView];}

#import "YLGIFImage.h"#import "YLImageView.h"-(void)showGifImageWithYLImageView{ YLImageView* imageView = [[YLImageView alloc] initWithFrame:CGRectMake(112, 342, 132, 102)]; CGFloat centerX = self.view.center.x; [imageView setCenter:CGPointMake(centerX, 402)]; [self.view addSubview:imageView]; imageView.image = [YLGIFImage imageNamed:@"earthGif.gif"];}

-(void)showGifImageWithFLAnimatedImage{ //GIF 转 NSData //Gif 路径 NSString *pathForFile = [[NSBundle mainBundle] pathForResource: @"earthGif" ofType:@"gif"]; //转成NSData NSData *dataOfGif = [NSData dataWithContentsOfFile: pathForFile]; //初始化FLAnimatedImage对象 FLAnimatedImage *image = [FLAnimatedImage animatedImageWithGIFData:dataOfGif]; //初始化FLAnimatedImageView对象 FLAnimatedImageView *imageView = [[FLAnimatedImageView alloc] init]; //设置GIF图片 imageView.animatedImage = image; imageView.frame = CGRectMake(112, 342, 132, 102); [self.view addSubview:imageView];}