如何從ios中包含多個子視圖的超級視圖中刪除特定的子視圖

Question

我正在使用循環向視圖添加多個視圖。

float contactsContainerX = 6.0f; 

UIView *contactsContainer=[[UIView alloc] initWithFrame:CGRectMake(0.0f,4.0f,110.0f,22.0f)]; 
      contactsContainer.backgroundColor=[UIColor colorWithRed:213.0f/255.0f green:213.0f/255.0f blue:213.0f/255.0f alpha:1.0f]; 

UIButton *closeButton = [[UIButton alloc] initWithFrame:CGRectMake(90.0f, 2.0f, 18.0f, 18.0f)]; 
closeButton.backgroundColor = [UIColor yellowColor]; 

[closeButton addTarget:self action:@selector(removeFavouriteContact:) forControlEvents:UIControlEventTouchUpInside]; 
[contactsContainer addSubview:closeButton]; 

for(int x=0; x<3;x++) 
{ 
    contactsContainer.frame = CGRectMake(contactsContainerX, contactsContainer.frame.origin.y, contactsContainer.frame.size.width, contactsContainer.frame.size.height); 
    [self.contactsViewSuperContainers addSubview:contactsContainer]; 
    contactsContainerX = contactsContainer.frame.origin.x + contactsContainer.frame.size.width+6.0f; 
    self.contactsScroller.contentSize =CGSizeMake(contactsContainerX,self.contactsViewSuperContainers.frame.size.height); 
} 

現在，只要我點擊按鈕。該行動應該刪除我點擊的特定子視圖。我的意思是代碼是什麼？請幫幫我。

-(void) removeFavouriteContact: (UIButton *) sender 
{ 

    for(UIView *subview in self.contactsScroller.subviews) 
     if (self.contactsScroller.subviews) 
     { 
      //<#statements#> 
      //[self.view removeFromSuperview]; 

     } 

} 

Answer 1

考慮您的Button直接添加到您的循環添加的View，你可以很容易地通過使用

-(void) removeFavouriteContact :(id)sender { 
    [[sender superview] removeFromSuperView]; 
} 

訪問你的行動SuperView如果你的按鈕上面的代碼將只工作直接添加到視圖中，如果沒有檢查它所添加的按鈕的級別，在深層次上，您可以追加superview並獲得如下的精確超級視圖

[[[[sender superview] superview] superview] removeFromSuperView]; 

希望它有幫助。

乾杯。

Answer 2

僅使用一個線

[[someUIView子視圖] makeObjectsPerformSelector：@selector（removeFromSuperview）];

Answer 3

使用tag和viewWithTag屬性。設置爲tag爲您的view & button並使用tag獲得該view然後將其刪除。

-(void) removeFavouriteContact :(id)sender { 
    NSInteger tag = sender.tag; 
    UIView *view = [contactsContainer viewWithTag:tag]; 
    [view removeFromSuperView]; 
}