如何在UIImageView的左上角和右下角創建UIButton

我希望在imageview的左上角和右下角創建刪除按鈕。但它看起來不像我所需要的。如何在UIImageView的左上角和右下角創建UIButton

enter image description here

我希望這兩個按鈕應放置在紅色邊框

的角球製造我用下面

UIImageView * tappedView = (UIImageView *)[recognizer view]; 

[tappedView.layer setBorderColor: [[UIColor redColor] CGColor]]; 
[tappedView.layer setBorderWidth: 2.0]; 
tappedView.layer.cornerRadius = 10; 
tappedView.layer.masksToBounds = NO; 


UIButton *deleteBtn = [UIButton buttonWithType:UIButtonTypeCustom]; 
deleteBtn.frame = CGRectMake(0, 0, 20, 20); 

[deleteBtn setImage:[UIImage imageNamed:@"close.png"]forState:UIControlStateNormal]; 

deleteBtn.layer.shadowColor = [[UIColor blackColor] CGColor]; 
deleteBtn.layer.shadowOffset = CGSizeMake(0,4); 
deleteBtn.layer.shadowOpacity = 0.3; 
[tappedView addSubview:deleteBtn]; 
[deleteBtn addTarget:self action:@selector(deleteProperties:) forControlEvents:UIControlEventTouchUpInside]; 



UIButton *zoomBtn = [UIButton buttonWithType:UIButtonTypeCustom]; 
zoomBtn.frame = CGRectMake(tappedView.frame.size.width, tappedView.frame.size.height, 20, 20); 

[zoomBtn setImage:[UIImage imageNamed:@"close.png"]forState:UIControlStateNormal]; 

zoomBtn.layer.shadowColor = [[UIColor blackColor] CGColor]; 
zoomBtn.layer.shadowOffset = CGSizeMake(0,4); 
zoomBtn.layer.shadowOpacity = 0.3; 
[tappedView addSubview:zoomBtn]; 
[zoomBtn addTarget:self action:@selector(ZoomIn:) forControlEvents:UIControlEventTouchUpInside];

代碼按鈕請指導我。

我想這樣 enter image description here

來源

2012-09-21 thavasidurai

剛玩的按鈕的框架：如

deleteBtn.frame = CGRectMake(-5, -5, 20, 20);

和

zoomBtn.frame = CGRectMake(tappedView.frame.size.width - 20, tappedView.frame.size.height - 20, 20, 20);

作爲第一2個數字是座標x和y和框架是相對於包含視圖幀。

來源

2012-09-21 07:08:57 Brendt

是的。如果我將（-5，-5,20,20）放置在確切的位置，但在按鈕上出現紅色邊框，我已經嘗試過這一個。 – thavasidurai

@Brendt我應該刪除我的帖子？兩個聲音都一樣.... – Spynet

@Brendt我編輯了我的問題請看它。 – thavasidurai

只需使用zoomBtn.center而不是zoomBtn.frame - 這樣，您不必考慮按鈕的大小 - 它適用於任何大小的按鈕。

// Create the button's frame - doesn't matter the x & y 
CGRect btnFrame = CGRectMake(0.0f, 0.0f, 20.0f, 20.0f); 

zoomBtn.frame = btnFrame; 

// Set the zoomBtn center to the bottom right corner 
zoomBtn.center = CGPointMake(tappedView.frame.size.width, tappedView.frame.size.height); 

deleteBtn.frame = btnFrame; 

// Set the deleteBtn center to the top left corner 
deleteBtn.center = CGPointMake(0.0f, 0.0f);

來源

2013-03-30 00:57:41 siburb

如何在UIImageView的左上角和右下角創建UIButton

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