播放声音时我的应用程序崩溃

Question

我试图单击一个按钮来播放声音。 但是，当我运行该应用程序时，它崩溃了，我得到Thread 1 : signal SIGABRT 。

这是我的代码：

.h文件

#import <AVFoundation/AVFoundation.h>

@interface HljodViewController : UIViewController <AVAudioPlayerDelegate>{

}

-(IBAction)playsound;

.m文件

-(IBAction)playsound {

    NSString *path = [[NSBundle mainBundle] pathForResource:@"Geese_4" ofType:@"mp3"];
    AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
    theAudio.numberOfLoops = 1;
    [theAudio play];
}

Answer 1

如果您不捕获NSError没人能告诉您如何解决您的问题。 我建议您执行以下操作：

NSError *outError = nil;
AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&outError];
if (outError)
{
    NSLog(@"%@", [outError localizedDescription]);
}
... // continue on to happy time

Answer 2

只需查看下面显示的链接，然后检查您在哪里犯错？

http://looksok.wordpress.com/2013/01/19/ios-tutorial-play-sound/

http://www.techotopia.com/index.php/Playing_Audio_on_an_iPhone_using_AVAudioPlayer_(iOS_6）

http://code-and-coffee.blogspot.in/2012/09/how-to-play-audio-in-ios.html

Answer 3

尝试这个：

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
NSString *path = [[NSBundle mainBundle] pathForResource:@"yourfile" ofType:@"mp3"];
NSError *error;
AVAudioPlayer *sound = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&error];
[sound play];