以編程方式移除uiview by uibutton

我被困在如何通過用戶單擊uibutton來移除uiview，立即加載場景的uibutton加載。烏布頓也沒有得到迴應。我應該如何設置它？請幫助，非常感謝。以編程方式移除uiview by uibutton

- (void)viewWillAppear:(BOOL)animated { 
    UIView *holderView = [[UIView alloc] initWithFrame:CGRectMake(0, 50, _imagePicker.selectedImage.size.width, _imagePicker.selectedImage.size.height)]; 
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:[holderView frame]]; 
    [imageView setImage:_imagePicker.selectedImage]; 
    [holderView addSubview:imageView]; 

    UIButton *removeSticker = [UIButton buttonWithType:UIButtonTypeCustom]; 
    removeSticker.frame = CGRectMake(0, 0, 200, 100); 
    [removeSticker setImage:[UIImage imageNamed:@"cancel-disabled.png"] forState:UIControlStateNormal]; 
    [removeSticker addTarget:holderView action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside]; 
    [holderView addSubview: removeSticker]; 

    UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(scale:)]; 
    [pinchRecognizer setDelegate:self]; 
    [holderView addGestureRecognizer:pinchRecognizer]; 

    UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotate:)]; 
    [rotationRecognizer setDelegate:self]; 
    [holderView addGestureRecognizer:rotationRecognizer]; 

    UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(move:)]; 
    [panRecognizer setMinimumNumberOfTouches:1]; 
    [panRecognizer setMaximumNumberOfTouches:1]; 
    [panRecognizer setDelegate:self]; 
    [holderView addGestureRecognizer:panRecognizer]; 

    UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapped:)]; 
    [tapRecognizer setNumberOfTapsRequired:1]; 
    [tapRecognizer setDelegate:self]; 
    [holderView addGestureRecognizer:tapRecognizer]; 

    [parentPreviewView addSubview:holderView]; 
} 

- (void) buttonClicked: (id)sender 
{ 
    [self.view removeFromSuperview]; 
}

來源

2012-01-03 zeropt7

改變目標從holderView到self：

[removeSticker addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];

，並更改刪除了該視圖下面的代碼：

[holderView removeFromSuperview];

來源

2012-01-03 18:37:27 Hejazi

很好的回答，假設原來的問題是關於刪除'holderView'。我會建議的一個建議是在'viewWillAppear：'方法上面移動'buttonClicked'方法*，特別是如果在.h接口文件中沒有聲明'buttonClicked'。 – 2012-01-03 18:42:46

@MichaelDautermann只要我們使用選擇器，我認爲'buttonClicked'方法定義在'viewWillAppear'的上面或下面並不重要。 – Hejazi 2012-01-03 18:48:29

感謝您的及時回覆，但是當我將其更改爲'[holderView removeFromSuperview];'時，它表示使用未聲明的標識符？ – zeropt7 2012-01-03 18:54:20

每使用以下technique.Specify標籤控制你的視圖。然後你可以從這個「標籤」屬性中獲益

假設我指定的標記爲100。然後

UIButtom *buttonToRemove=(UIButton*)[self.view viewWithTag:100];

立即刪除（按鈕）使用此

[buttonToRemove removeFromSuperview];

來源

2013-07-09 17:51:57 ProgrammingNinja

以編程方式移除uiview by uibutton

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