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我的代码中有一个方法：

-(IBAction) actionButtonPressed: (id) sender{
    NSLog(@"%@",actionButton.titleLabel.text);
    if (actionButton.titleLabel.text == @"Begin Recording"){
        [actionButton setTitle:@"Finish Recording" forState:UIControlStateNormal];
        [actionButton setTitle:@"Finish Recording" forState:UIControlStateApplication];
        [actionButton setTitle:@"Finish Recording" forState:UIControlStateHighlighted];
        [actionButton setTitle:@"Finish Recording" forState:UIControlStateReserved];
        [actionButton setTitle:@"Finish Recording" forState:UIControlStateSelected];
        [actionButton setTitle:@"Finish Recording" forState:UIControlStateDisabled];
        UIImage *redButton = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"bigredbutton" ofType:@"png"]];
        [actionButton setBackgroundImage:redButton forState:UIControlStateNormal];
        [actionButton setBackgroundImage:redButton forState:UIControlStateApplication];
        [actionButton setBackgroundImage:redButton forState:UIControlStateHighlighted];
        [actionButton setBackgroundImage:redButton forState:UIControlStateReserved];
        [actionButton setBackgroundImage:redButton forState:UIControlStateSelected];
        [actionButton setBackgroundImage:redButton forState:UIControlStateDisabled];
    }
    if (actionButton.titleLabel.text == @"Finish Recording"){
        [self dismissModalViewControllerAnimated:YES];
    }

}

出于某种原因，NSLog 调用确实有效并显示在控制台上。该按钮开始读取 Begin Recording，但即使它与 Interface Builder 中的 Touch Up Inside 绑定以调用此方法并被引用，按下它也无济于事。

4

1 回答 1

3

你的问题是这一行：

if (actionButton.titleLabel.text == @"Begin Recording"){

你在比较指针，而不是字符串。你需要：

if ([actionButton.titleLabel.text isEqualToString:@"Begin Recording"]){
于 2010-02-12T21:37:52.730 回答