Question

我使用AVAudioPlayer播放声音，但在播放时，音量非常低。

我完成了搜索，发现了很多关于添加会话属性或会话类别的代码，但我想知道如何使用它。

-(void) playVoice: (NSString *) path
{
    if([path isEqualToString:@""] == NO)
    {
        //Initialize the AVAudioPlayer.
        NSData *soundData= [NSData dataWithContentsOfFile:path];
        NSError *error;
        audioPlayer= [[AVAudioPlayer alloc] initWithData:soundData error:&error];

        if (error)
        {
            NSLog(@"Error in audioPlayer: %@",
                  [error localizedDescription]);
        } else {
                      audioPlayer.delegate = self;
            NSLog(@"total time=%f", self.audioPlayer.currentTime);
            self.PlayStatusSlider.maximumValue= audioPlayer.duration;
            myTimer= [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(changeAudioProgress) userInfo:nil repeats:YES];
            [audioPlayer prepareToPlay];
            [audioPlayer setVolume:1.0];


            [audioPlayer play];
        }
    }else{
        //  NSLog(@"ErrorDownloading");
    }
}

- (void) configureAVAudioSession
{
    //get your app's audioSession singleton object
    AVAudioSession* session = [AVAudioSession sharedInstance];

    //error handling
    BOOL success;
    NSError* error;

    //set the audioSession category.
    //Needs to be Record or PlayAndRecord to use audioRouteOverride:

    success = [session setCategory:AVAudioSessionCategoryPlayAndRecord
                             error:&error];

    if (!success)  NSLog(@"AVAudioSession error setting category:%@",error);

    //set the audioSession override
    success = [session overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker
                                         error:&error];
    if (!success)  NSLog(@"AVAudioSession error overrideOutputAudioPort:%@",error);

    //activate the audio session
    success = [session setActive:YES error:&error];
    if (!success) NSLog(@"AVAudioSession error activating: %@",error);
    else NSLog(@"audioSession active");
}

但它不适合我。女巫部分错了？我应该如何使用它？

Answer 1

您必须将音频会话默认设置为扬声器。对于现在遇到这个问题的任何人：

private var configureAudioSessionError：NSError？

def getAllWindows(L):
    tracker = set()
    for w in range(1, len(L)+1):
        for i in range(len(L)-w+1):
            sub_window = L[i:i+w]
            if sub_window not in tracker:
                tracker.add(sub_window)
                yield sub_window


lookup_list = ['red', 'hello', 'how are you', 'hey', 'deployed']
lookup_set = set(lookup_list)
text = 'hello, This is shared right? how are you doing tonight'
result = [sub_window for sub_window in getAllWindows(text) if sub_window in lookup_list]
print(result)
#Output:
['red', 'hello', 'how are you']

AVAudioPlayer音量低（如何设置扬声器的音量）

1 个答案: