iOS 自定义方法 - 播放GIF
///////////////////////第一种///////////////////////
//
// GifView.h
// GIFViewer
//
// Created by xToucher04 on 11-11-9.
// Copyright 2011 Toucher. All rights reserved.
//
#import <UIKit/UIKit.h>
#import <ImageIO/ImageIO.h>
@interface GifView : UIView {
CGImageSourceRef gif;
NSDictionary *gifProperties;
size_t index;
size_t count;
NSTimer *timer;
}
- (id)initWithFrame:(CGRect)frame filePath:(NSString *)_filePath;
- (id)initWithFrame:(CGRect)frame data:(NSData *)_data;
@end
//例子
////
//// ViewController.m
//// 播放动态图片
////
//
//#import "ViewController.h"
//#import "GifView.h"
//
//@interface ViewController ()
//
//@end
//
//@implementation ViewController
//
//- (void)viewDidLoad {
// [super viewDidLoad];
// //第一种 用UIImageView中的动画数组播放动画
// [self showGifImageMethodOne];
// //第二种 用UIWebView显示
// [self showGifImageMethodTwo];
// //第三种 用第三方GifView显示本地图片
// [self showGifImageMethodThree];
// //用第三方显示从网络获取的动态图片
// [self showGifImageMethodFour];
//}
//
//#pragma mark 播放动态图片方式1 UIImageView
//-(void)showGifImageMethodOne {
// //第一种 用UIImageView中的动画数组播放动画
// //创建UIImageView，添加到界面
// UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(20, 20, 100, 100)];
// [self.view addSubview:imageView];
// //创建一个数组，数组中按顺序添加要播放的图片（图片为静态的图片）
// NSMutableArray *imgArray = [NSMutableArray array];
// for (int i=1; i<7; i++) {
// UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"clock%02d.png",i]];
// [imgArray addObject:image];
// }
// //把存有UIImage的数组赋给动画图片数组
// imageView.animationImages = imgArray;
// //设置执行一次完整动画的时长
// imageView.animationDuration = 6*0.15;
// //动画重复次数 （0为重复播放）
// imageView.animationRepeatCount = 0;
// //开始播放动画
// [imageView startAnimating];
// //停止播放动画 - (void)stopAnimating;
// //判断是否正在执行动画 - (BOOL)isAnimating;
//}
//
//#pragma mark 播放动态图片方式2 UIWebView
//-(void)showGifImageMethodTwo {
// //第二种 用UIWebView显示
// //得到图片的路径
// NSString *path = [[NSBundle mainBundle] pathForResource:@"happy" ofType:@"gif"];
// //将图片转为NSData
// NSData *gifData = [NSData dataWithContentsOfFile:path];
// //创建一个webView，添加到界面
// UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 150, 200, 200)];
// [self.view addSubview:webView];
// //自动调整尺寸
// webView.scalesPageToFit = YES;
// //禁止滚动
// webView.scrollView.scrollEnabled = NO;
// //设置透明效果
// webView.backgroundColor = [UIColor clearColor];
// webView.opaque = 0;
// //加载数据
// [webView loadData:gifData MIMEType:@"image/gif" textEncodingName:nil baseURL:nil];
//}
//
//#pragma mark 播放动态图片方式3 第三方显示本地动态图片
//-(void)showGifImageMethodThree {
// //方式一
// //将图片转为NSData数据
// NSData *localData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"bird" ofType:@"gif"]];
// //创建一个第三方的View显示图片
// GifView *dataView = [[GifView alloc] initWithFrame:CGRectMake(0, 300, 200, 100) data:localData];
// [self.view addSubview:dataView];
// //方式二
// //得到图片的路径
// NSString *path = [[NSBundle mainBundle] pathForResource:@"cat" ofType:@"gif"];
// GifView *dataView2 = [[GifView alloc] initWithFrame:CGRectMake(200, 300, 150, 100) filePath:path];
// [self.view addSubview:dataView2];
//}
//
//#pragma mark 播放动态图片方式3 第三方显示从网络获取的动态图片
//-(void)showGifImageMethodFour {
// // 网络图片
// NSData *urlData = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://pic19.nipic.com/20120222/8072717_124734762000_2.gif"]];
// //创建一个第三方的View显示图片
// GifView *dataViewWeb = [[GifView alloc] initWithFrame:CGRectMake(20, 420, 280, 100) data:urlData];
// [self.view addSubview:dataViewWeb];
//}
//
//- (void)didReceiveMemoryWarning {
// [super didReceiveMemoryWarning];
//}
//
//@end
////////////////////////////////
//
// GifView.m
// GIFViewer
//
// Created by xToucher04 on 11-11-9.
// Copyright 2011 Toucher. All rights reserved.
//
#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] retain];
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 && _data) {
gifProperties = [[NSDictionary dictionaryWithObject:[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:0] forKey:(NSString *)kCGImagePropertyGIFLoopCount]
forKey:(NSString *)kCGImagePropertyGIFDictionary] retain];
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 = (id)ref;
CFRelease(ref);
}
-(void)removeFromSuperview {
NSLog(@"removeFromSuperview");
[timer invalidate];
timer = nil;
[super removeFromSuperview];
}
- (void)dealloc {
NSLog(@"dealloc");
CFRelease(gif);
[gifProperties release];
[super dealloc];
}
@end
///////////////////////第二种///////////////////////
//
// UIImageView+Gif.h
// DemoTest1
//
// Created by 李鹏超 on 16/8/11.
// Copyright © 2016年 李鹏超. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface UIImageView (Gif)
-(void)getGifImageWithUrk:(NSURL *)url
returnData:(void(^)(NSArray<UIImage *> * imageArray,
NSArray<NSNumber *>*timeArray,
CGFloat totalTime,
NSArray<NSNumber *>* widths,
NSArray<NSNumber *>* heights))dataBlock;
-(void)yh_setImage:(NSURL *)imageUrl;
@end
//使用例子
//使用代码示例如下：
//UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 50 , 320, 100)];
//NSURL * url = [[NSURL alloc]initFileURLWithPath:[[NSBundle mainBundle] pathForResource:@"1-1.gif" ofType:nil]];
// [imageView yh_setImage:url];
// [imageView getGifImageWithUrk:url returnData:^(NSArray<UIImage *> *imageArray, NSArray<NSNumber *> *timeArray, CGFloat totalTime, NSArray<NSNumber *> *widths, NSArray<NSNumber *> *heights) {
//
// }];
//SDWebImage中的方法例子
// self.loadingImageView.image = [UIImage sd_animatedGIFWithData:imageData];
//#import <UIKit/UIKit.h>
//
//@interface UIImage (GIF)
//
//+ (UIImage *)sd_animatedGIFNamed:(NSString *)name;
//
//+ (UIImage *)sd_animatedGIFWithData:(NSData *)data;
//
//- (UIImage *)sd_animatedImageByScalingAndCroppingToSize:(CGSize)size;
//
//@end
//getHUb -- 第三方 FLAnimatedImage
////////////////////////////
//
// UIImageView+Gif.m
// DemoTest1
//
// Created by 李鹏超 on 16/8/11.
// Copyright © 2016年 李鹏超. All rights reserved.
//
#import "UIImageView+Gif.h"
#import <ImageIO/ImageIO.h>
@implementation UIImageView (Gif)
//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
