如果在UINavigationBar中点击“后退”按钮,我该如何播放声音?
答案 0 :(得分:2)
为此,您需要使用新的替换常用的“后退”按钮,并使用您的播放声音代码:
//in ViewDidLoad:
UIBarButtonItem *barBtnItem = [[UIBarButtonItem alloc]initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(pop:)];
self.navigationItem.leftBarButtonItem = barBtnItem;
[barBtnItem release];
//action:
- (IBAction)pop:(id)sender {
//your code of playing sound here
[self.navigationController popViewControllerAnimated:YES];
}
但请注意,它看起来不像通常的“后退”按钮。它将是矩形。如果您看起来像通常的“后退”按钮,请将其实现为具有cusom图像的自定义按钮(如通常的“后退”按钮)
答案 1 :(得分:1)
在你的pop方法中你可以通过以下方式播放声音:
- (IBAction)pop:(id)sender
{
NSString *soundPath = [[NSBundle mainBundle] pathForResource:@”soundName” ofType:@”wav”];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath: soundPath], &soundID);
AudioServicesPlaySystemSound (soundID);
[soundPath release];
[self.navigationController popViewControllerAnimated:YES];
}