UIImageView、UIView、拉伸像素点

UIImageView的动画效果

    UIImageView *imaView=[[UIImageView alloc]init ];

    //添加将要播放的图片数组

    imaView.animationImages=arr;

    //设置播放时间

    imaView.animationDuration=1;

    //启动动画

    [imaView startAnimating];

图片拉伸像素点

        UIImage *bubble = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"bubble" ofType:@"png"]];

UIImageView *bubbleImageView = [[UIImageView alloc] initWithImage:[bubble stretchableImageWithLeftCapWidth:21 topCapHeight:14]];

UIView

   //将某个视图提到最前面显示

    [self.view bringSubviewToFront:view1];

    //将某个视图放到最后面

    [self.window sendSubviewToBack:view1];

     // view1是view2的父试图。

     //如果子视图的长和宽都要跟着父试图走，那么就按照下面的方法执行

    view2.autoresizingMask=UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;

    [view1 addSubview:view2];