iphone - 带有两行标签的 UIBarButtonItem 宽度

Question

我想知道如何消除 UIBarButtonItem 中两行标签左右的空格，该标签的 View 由 setCustomView 设置，如下所示:

UIButton* forwardButton = [UIButton buttonWithType:101];

[forwardButton setTransform:CGAffineTransformMakeScale(-1.0, 1.0)];
[forwardButton.titleLabel setTransform:CGAffineTransformMakeScale(-1.0, 1.0)];

[forwardButton setTitle:@"Now\nPlaying" forState:UIControlStateNormal];
[forwardButton addTarget:self action:@selector(openPlayer) forControlEvents:UIControlEventTouchUpInside];

[forwardButton.titleLabel setNumberOfLines:2];
[forwardButton.titleLabel setLineBreakMode:NSLineBreakByWordWrapping];
[forwardButton.titleLabel setTextAlignment:NSTextAlignmentCenter];
[forwardButton.titleLabel setFont:[UIFont boldSystemFontOfSize:10]];

[navButton setCustomView:forwardButton];

Here是我得到的结果。

按钮的宽度就好像标签的文本写在一行中，如 this .

Answer 1

您可以尝试更改按钮的边界。

UIButton* forwardButton = [UIButton buttonWithType:101];
[forwardButton setTransform:CGAffineTransformMakeScale(-1.0, 1.0)];
[forwardButton.titleLabel setTransform:CGAffineTransformMakeScale(-1.0, 1.0)];

[forwardButton setTitle:@"Now\nPlaying" forState:UIControlStateNormal];
[forwardButton.titleLabel setNumberOfLines:2];
[forwardButton.titleLabel setLineBreakMode:NSLineBreakByWordWrapping];
[forwardButton.titleLabel setTextAlignment:NSTextAlignmentCenter];
[forwardButton.titleLabel setFont:[UIFont boldSystemFontOfSize:10]];

forwardButton.bounds = CGRectMake(0, 0, 30, 30);


UIBarButtonItem* forwardButtonItem = [[UIBarButtonItem alloc] initWithCustomView: forwardButton];
self.navigationItem.rightBarButtonItem = forwardButtonItem;

测试过这个并且有效