iOS 播放gif动画

用于播放 GIF 图片的代码

1.使用webView加载

-(void)way1

{

    // 设定位置和大小

    CGRect frame ;

    frame.size = [UIImage imageNamed:@"2.gif"].size;

    // 读取gif图片数据

    NSData *gif = [NSData dataWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"2" ofType:@"gif"]];

    // view生成

    UIWebView *webView = [[UIWebView alloc] initWithFrame:frame];

    webView.backgroundColor =[UIColor blackColor];

    webView.userInteractionEnabled = NO;//用户不可交互

    [webView loadData:gif MIMEType:@"image/gif" textEncodingName:nil baseURL:nil];

    [self.view addSubview:webView];

    //[webView release];

}

第二种方法(将gif解析成一个包含n张图片的数组，在使用帧动画将它播放出来)

#import "ViewController.h"

#import <ImageIO/ImageIO.h> //CGImageSource对图像数据读取任务的抽象

#import <QuartzCore/CoreAnimation.h>//帧动画

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad

{

    NSURL *fileUrl = [[NSBundle mainBundle] URLForResource:@"2" withExtension:@"gif"];

    NSData *date = [NSData dataWithContentsOfURL:fileUrl];

    [self animationWithImageArr:[self praseGIFDataToImageArray:date]];

}

//将gif图像解析成一个包含UIImage对象的数组

- (NSMutableArray *)praseGIFDataToImageArray:(NSData *)data;

{

    NSMutableArray *images = [[NSMutableArray alloc] init];

    CGImageSourceRef src = CGImageSourceCreateWithData((CFDataRef)data, NULL);

    if (src) {

        size_t l = CGImageSourceGetCount(src);

        images = [NSMutableArray arrayWithCapacity:l];

        for (size_t i = 0; i < l; i++) {

            CGImageRef imgRef = CGImageSourceCreateImageAtIndex(src, i, NULL);

            UIImage *aImage = [[UIImage alloc]initWithCGImage:imgRef];

            [images addObject:aImage];

        }

        CFRelease(src);

    }

    return images;

}

//将图像重新变成一个动画（帧动画），这里可以自己设置动画的间隔时间

-(void)animationWithImageArr:(NSMutableArray *)imagesArray

{

    UIImageView *gifImageView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    NSArray *gifArray = [imagesArray mutableCopy];

    gifImageView.animationImages = gifArray; //动画图片数组

    gifImageView.animationDuration = 0.2; //执行一次完整动画所需的时长

    gifImageView.animationRepeatCount = MAXFLOAT;  //动画重复次数

    [gifImageView startAnimating];

    [self.view addSubview:gifImageView];

}

@end