以编程方式中心UIButton

我有一个UIButton，我以编程方式添加。这里没有问题，因为它应该和看起来不错。但是，当我将手机倾斜到风景时，按钮不正确，我希望它仍居中。以编程方式中心UIButton

肖像： It's centered here

景观： Not centered here

我已经尝试了一堆东西，但似乎无法得到它的工作，在我看来，该自动尺寸应该然而照顾它。 ..在这种情况下它不起作用。

- (UIView*)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section 
{ 
    UIView *footerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.tableView.frame.size.width, 49)]; 

    _notMeButton = [UIButton buttonWithType:UIButtonTypeCustom]; 
    UIImage *butImage = [[UIImage imageNamed:@"notme.png"] stretchableImageWithLeftCapWidth:6 topCapHeight:6]; 
    UIImage *butImagePressed = [[UIImage imageNamed:@"KC_notmePressed.png"] stretchableImageWithLeftCapWidth:6 topCapHeight:6]; 
    [_notMeButton setBackgroundImage:butImage forState:UIControlStateNormal]; 
    [_notMeButton setBackgroundImage:butImagePressed forState:UIControlStateHighlighted]; 
    [_notMeButton setTitle:NSLocalizedString(@"Change address", @"KlarnaCheckout") forState:UIControlStateNormal]; 
    [_notMeButton setTitleColor:[UIColor darkGrayColor] forState:UIControlStateNormal]; 
    [_notMeButton setTitleColor:[UIColor blackColor] forState:UIControlStateHighlighted]; 
    [_notMeButton setTitleShadowColor:[UIColor whiteColor] forState:UIControlStateNormal]; 
    [_notMeButton.titleLabel setShadowColor:[UIColor whiteColor]]; 
    [_notMeButton.titleLabel setShadowOffset:CGSizeMake(0, 1)]; 
    [_notMeButton.titleLabel setFont:[UIFont systemFontOfSize:14]]; 
    [_notMeButton addTarget:self action:@selector(thisIsNotMe) forControlEvents:UIControlEventTouchUpInside]; 
    [_notMeButton setTag:1]; 
    [_notMeButton sizeToFit]; 
    [_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin]; 
    [_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleRightMargin]; 
    [_notMeButton setFrame:CGRectMake(10, 10, _notMeButton.frame.size.width+20, _notMeButton.frame.size.height)]; 
    [_notMeButton setCenter:footerView.center]; 

    [footerView addSubview:_notMeButton]; 

    return footerView; 
}

来源

2012-01-18 Paul Peelen

您对自动调整面膜的想法是对的，但你正确设置它：

[_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin]; 
[_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleRightMargin];

第二行覆盖了你在第1套。设置多个标志正确的方法是：

[_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin];

来源

2012-01-18 10:27:33 Vladimir

一件事之前，我回答你的问题：

[_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin]; 
[_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleRightMargin];

第二句覆盖第一个，你应该使用|运营商这样既调整掩码适用于：

[_notMeButton setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin];

要保持元素的地方是当视图改变其大小，你需要告诉它不使用任何调整面膜：

[_notMeButton setAutoresizingMask:UIViewAutoresizingNone];

而且在Interface Builder中相当于是这样的：

IB autoresizing mask applier

我希望它能帮助

来源

2012-01-18 10:34:25

以编程方式中心UIButton

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