如何在图像视图中对齐标签？

我有一个滚动视图（IBOutlet）;在那个scrollview中我添加了一个imageview。我试图根据其大小在图像中添加标签。我的意思是，有9个选项可以在图像中添加标签：例如TR（右上角），TC（顶部中心），C（中心）......假设我的图像比iPhone的分辨率要小，比如300x160。现在，我在图像视图中加载标签，但它不能正常工作，标签的对齐方式不正确。这里是我的对齐按钮代码：如何在图像视图中对齐标签？

-(IBAction)btn_AlignPressed:(UIButton*)sender{ 
    lbl.tag = sender.tag; 
    [imgView addSubview:lbl]; 
    if (sender.tag == 1) { 
     lbl.frame = CGRectMake(0, 0, imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 2) { 
     lbl.frame = CGRectMake(160-(imgView.frame.size.width/2), 0, imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 3) { 
     lbl.frame = CGRectMake(320-imgView.frame.size.width, 0, imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 4) { 
     lbl.frame = CGRectMake(0, 210-(imgView.frame.size.height/2), imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 5) { 
     lbl.frame = CGRectMake(160-(imgView.frame.size.width/2), 210-(imgView.frame.size.height/2), imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 6) { 
     lbl.frame = CGRectMake(320-imgView.frame.size.width, 210-(imgView.frame.size.height/2), imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 7) { 
     lbl.frame = CGRectMake(0, 420-imgView.frame.size.height, imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 8) { 
     lbl.frame = CGRectMake(160-(imgView.frame.size.width/2), 420-imgView.frame.size.height, imgView.frame.size.width, imgView.frame.size.height); 
    } else if(sender.tag == 9) { 
     lbl.frame = CGRectMake(320-imgView.frame.size.width, 420-imgView.frame.size.height, imgView.frame.size.width, imgView.frame.size.height); 
    } 
}

请帮帮我。

在此先感谢。

来源

2012-06-28 HML

您只设置x和y值，您还必须处理标签的宽度和高度。

来源

2012-06-28 06:41:01 AJS

如何在图像视图中对齐标签？

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