iOS 简单的播放gif动画

基本上有三种方式来播放gif动画

1.webView播放方式

webView是一个很强大的控件，可以很容易的实现gif的播放，不过只能循环播放。

CGRect rect =CGRectMake(3,10,100,100);

rect.size = [UIImageimageNamed:@"jiafei.gif"].size;

_webView = [[UIWebViewalloc]initWithFrame:rect];

NSData *imgData = [NSDatadataWithContentsOfFile:[[NSBundlemainBundle]pathForResource:@"jiafei"ofType:@"gif"]];

[_webViewloadData:imgDataMIMEType:@"image/gif"textEncodingName:nilbaseURL:nil];

_webView.userInteractionEnabled =NO;//用不不可交互

_webView.backgroundColor = [UIColorclearColor];

_webView.opaque =NO;

[self.viewaddSubview:_webView];

//获取图片数据的格式的代码

+ (NSString *)MIMETypeForImageData:(NSData *)data {

if (!data)returnnil;

uint8_t c;

[datagetBytes:&clength:1];

switch (c) {

case0xFF:

return@"image/jpeg";

case0x89:

return@"image/png";

case0x47:

return@"image/gif";

case0x49:

case0x4D:

return@"image/tiff";

}

return nil;

}

2.第三方播放方式

采用ImageIO库，对gif文件进行解析，然后做动画显示

我觉得OLImageView写的不错，支持循环播放、暂停和继续播放，下载地址：http://code4app.com/ios/OLImageView/50beb9a26803fac635000001

注：需要导入两个库：ImageIO.framework 和 MobileCoreServices.framework

3.UIImageView播放方式

将gif分解成多张png图片，用UIImageView播放。

NSMutableArray *resourceArr = [[NSMutableArrayalloc]init];

for (int i =1;i <=17;i++)

{

UIImage *pic =nil;

if (i <10)

{

pic = [UIImageimageNamed:[NSStringstringWithFormat:@"campFire0%i.gif",i]];

}

else

{

pic = [UIImageimageNamed:[NSStringstringWithFormat:@"campFire%i.gif",i]];

}

[resourceArraddObject:pic];

}

UIImageView *fireImageView = [[UIImageViewalloc]initWithFrame:self.view.bounds];

fireImageView.animationImages = resourceArr;

//执行一次完整动画所需时长

fireImageView.animationDuration =1.75;

//repeat the animation forever

fireImageView.animationRepeatCount =0;

[fireImageViewstartAnimating];

[self.viewaddSubview:fireImageView];