AVAudioSession setCategory错误 [英] AVAudioSession setCategory error

问题描述

尝试一下:

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&error];

if (error) {
    NSLog(@"Error setting category: %@", [error description]);
}

重新获得错误错误设置类别:UIView"，但不确定如何解决此问题.不能完全确定它在告诉我什么.

Getting the error back "Error setting category: UIView" but am not sure how to go about fixing this. Not entirely sure what it's telling me.

请帮助！

编辑

音频播放:

NSURL *audioFileURL = [[NSBundle mainBundle] URLForResource:@"DemoSong" withExtension:@"m4a"];
NSError *error;

self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileURL error:&error];

if (error) {
    NSLog(@"%@", [error localizedDescription]);
}

[_audioPlayer setNumberOfLoops:-1];
[_audioPlayer setMeteringEnabled:YES];
[_visualizer setAudioPlayer:_audioPlayer];

[_audioPlayer prepareToPlay];
[_audioPlayer play];
NSLog(@"play audio");

推荐答案

您应该检查[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&error]的返回值，因为成功返回YES，失败返回NO.

You should check the return value of [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&error], as it returns YES if it succeeded and NO if it failed.

如果setCategory:error:的返回值为NO，则仅查看error变量.

Only look at the error variable if the return value of setCategory:error: is NO.

这篇关于AVAudioSession setCategory错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！