Question

大家好，我已经实现了如下所示的代码。当我点击pressdeal按钮时，图像没有出现在屏幕上。我需要做什么才能使图像出现在UIImageView上？

- (void)viewDidload{
    imagesarray = [[NSMutableArray alloc] initWithObjects:@"bg1.png",@"bg2.png",@"back-button.png",@"bluestar.png",nil];

    imageOut = [[UIImageView alloc]init];
}

-(IBAction)pressDeal{
    index=arc4random()%4;
    image=[UIImage imageNamed:[imagesarray objectAtIndex:index]];
    NSLog(@"**********2222************%@",imageOut);
    [imageOut setImage:image];
    NSLog(@"***********333***********%@",imageOut);
}




2012-03-20 16:41:34.135 pocker[1552:f803] **********2222************<UIImageView: 0x6a71000; frame = (0 0; 0 0); userInteractionEnabled = NO; layer = <CALayer: 0x6a73450>>
2012-03-20 16:41:34.179 pocker[1552:f803] ***********333***********<UIImageView: 0x6a71000; frame = (0 0; 0 0); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0x6a73450>>

Answer 1

您没有将图像视图添加到屏幕。在某处添加

[self.view addSubView:imageOut];

您还需要设置imageOut视图的框架。

之类的东西

imageOut.frame = CGRectMake(0,0,320,460);

如何在屏幕上显示随机图像的代码？

1 个答案: