Question

我正在尝试解决此崩溃问题：

Thread 0 Crashed:
0   libobjc.A.dylib                 0x0000000180274430 objc_msgSend + 16
1   Foundation                      0x0000000181a132e4 __NSThreadPerformPerform + 340 (NSThread.m:1265)
2   CoreFoundation                  0x0000000180fbf77c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24 (CFRunLoop.c:1982)
3   CoreFoundation                  0x0000000180fbf6fc __CFRunLoopDoSource0 + 88 (CFRunLoop.c:2017)
4   CoreFoundation                  0x0000000180fbef84 __CFRunLoopDoSources0 + 204 (CFRunLoop.c:2053)
5   CoreFoundation                  0x0000000180fbcb5c __CFRunLoopRun + 1048 (CFRunLoop.c:2920)
6   CoreFoundation                  0x0000000180edcc58 CFRunLoopRunSpecific + 436 (CFRunLoop.c:3245)
7   GraphicsServices                0x0000000182d88f84 GSEventRunModal + 100 (GSEvent.c:2245)
8   UIKit                           0x000000018a6355c4 UIApplicationMain + 236 (UIApplication.m:3956)

经过进一步调查，我发现崩溃发生在AVFAudio：的 performSelector：withObject：finishedPlaying

我不确定是谁调用了这个，因为我没有调用这个函数，而且我没有实现AVAudioPlayer委托。

当用户点击某些内容时，我只是在播放音频。我最初的猜测是音频仍在播放，视图控制器被解雇。但是，我无法重现它。我打电话播放音频是这样的：

self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
    [self.audioPlayer play];

当控制器消失时我称之为：

- (void) viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    [self.audioPlayer stop];
}

另外，我强烈要求AVAudioPlayer

@property (nonatomic, strong) AVAudioPlayer *audioPlayer;

不确定这是否会影响它，但我想确保用户即使在静音时也会听到声音：

NSError *setCategoryErr = nil;
NSError *activationErr  = nil;
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&setCategoryErr];
[[AVAudioSession sharedInstance] setActive:YES error:&activationErr];

TIA

exeSelector上的AVFAudio崩溃：withObject：finishedPlaying

0 个答案: