uiimageview 圆角

    UIImageView *view=[[UIImageViewalloc]initWithFrame:CGRectMake(10,0, 300,130)];

    [view.layersetMasksToBounds:YES];

    view.layer.cornerRadius=4;

    view.clipsToBounds=YES;

    view.contentMode=UIViewContentModeScaleAspectFill;