iphone - 为自定义 UIBarButtonItem 设置文本

Question

我需要为自定义 UIBarButtonItem 设置标题。

我有以下代码：

UIButton* backToRecent = [UIButton buttonWithType:UIButtonTypeCustom];
[backToRecent setImage:[UIImage imageNamed:@"back.png"]forState:UIControlStateNormal];

[backToRecent addTarget:self action:@selector(backToRecent) forControlEvents:UIControlEventTouchUpInside];
[backToRecent setFrame:CGRectMake(0, 0, 60, 30)];

UIBarButtonItem* backButtonItem = [[UIBarButtonItem alloc]initWithCustomView:backToRecent];
[backButtonItem setTitle:@"Recent"];
partViewController.navigationItem.leftBarButtonItem = backButtonItem;
[backButtonItem release];

但是该按钮出现时没有“最近”文本。

Answer 1

穆罕默德，我怀疑你已经解决了这个问题，但这是一个简单的方法。希望这可以帮助遇到同样问题的人：

    UIBarButtonItem * backButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Recent" style:UIBarButtonItemStyleBordered target:self action:@selector(backToRecent)];
    self.navigationItem.leftBarButtonItem = backButtonItem;

Answer 2

你应该在 UIButton 上设置标题，而不是 UIBarButtonItem

[backToRecent setTitle:@"Recent" forState:UIControlStateNormal];

而且变量和方法同名也不行

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

这是行不通的，因为你使用

[backToRecent setImage:[UIImage imageNamed:@"back.png"]forState:UIControlStateNormal];

尝试使用

[backToRecent setBackgroundImage:[UIImage imageNamed:@"back.png"]forState:UIControlStateNormal];