//测试图片能否显示
-(void)showMyimgview
{
UIImageView *backgroundImg=[[UIImageView alloc]init];
backgroundImg.frame =CGRectMake(50, 200, 200, 100);
backgroundImg.image=[UIImage imageNamed:@"navbar"];
[self.view addSubview:backgroundImg];
[backgroundImg release];
}
原文：http://www.cnblogs.com/hl666/p/3792463.html