iOS网络请求动画

 

    UIActivityIndicatorView *testActivityIndicator = [[UIActivityIndicatorViewalloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];

    testActivityIndicator.center =CGPointMake(100.0f,100.0f);//只能设置中

    testActivityIndicator.frame =CGRectMake(0,0,TRCBWidth,TRCBHeight);

    

    [self.viewaddSubview:testActivityIndicator];

    testActivityIndicator.color = [UIColorclearColor];//改变圈圈的颜色为红色； iOS5引入

    

    UIImageView *imageView = [[UIImageViewalloc]init];

    imageView.frame =CGRectMake((TRCBWidth-90)/2, (TRCBHeight-90)/3,90,90);

    [imageViewsetBackgroundColor:[UIColorclearColor]];

    //创建UIImageView，添加到界面

   //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 = [NSMutableArrayarray];

    for (int i=0; i<3; i++) {

        UIImage *image1 = [UIImageimageNamed:[NSStringstringWithFormat:@"alan%d.png",i]];

        [imgArray addObject:image1];

    }

   //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 =3*0.2;

   //动画重复次数（0为重复播放）

    imageView.animationRepeatCount =0;

    

    //停止播放动画  - (void)stopAnimating;

    

    //判断是否正在执行动画  - (BOOL)isAnimating;

    [testActivityIndicatoraddSubview:imageView];

    [testActivityIndicatorstartAnimating];//开始旋转

    [imageView startAnimating];//开始旋转