如果我们传递 NSData，如何播放音频? [英] How to play an audio if we pass NSData?

问题描述

我转换了这个路径(file://localhost/var/mobile/Applications/8F81BA4C-7C6F-4496-BDA7-30C45478D758/Documents/sound.wav)，它是一个音频文件，即录制的.

I converted this path (file://localhost/var/mobile/Applications/8F81BA4C-7C6F-4496-BDA7-30C45478D758/Documents/sound.wav) which is an audio file i.e, recorded.

我正在将此路径转换为 ​​NSData.

I am converting this path to NSData.

NSData 是:示例:

<代码>< 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 64617461 32003200 1cf50200 e2ffe2ff 3cff3cff 08fe08fe 44fe44fe 04fe04fe e6fde6fd 95fd95fd 96fe96fe b9feb9fe ...........……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………f7fef7fe 96ff96ff bdffbdff d6ffd6ff 92009200 23012301 b200b200 79007900 5c015c01 fe01fe01 f101f101 fc01fc27b 03b01 & 7203

我想玩这个 NSData ，

I want to play this NSData ,

我确实喜欢以下内容:

NSString *urlString = [[NSString alloc] initWithData:appDelegate.dataTestingWasteData encoding:NSUTF8StringEncoding];
NSURL *url = [[NSURL alloc] initWithString:urlString];
self.palyer=[[AVPlayer alloc] initWithURL:url];
[self.palyer play];

但未播放，urlString 打印为空.

同路径(file://localhost/var/mobile/Applications/8F81BA4C-7C6F-4496-BDA7-30C45478D758/Documents/sound.wav)

如果我们使用下面的代码正在播放:

-(void)playAudio
{
    if (!audioRecorder.recording)
    {
        stopButton.enabled = YES;
        recordButton.enabled = NO;
        NSError *error;
        audioPlayer = [[AVAudioPlayer alloc]
                           initWithContentsOfURL:audioRecorder.url
                           error:&error];
        audioPlayer.delegate = self;
        if (error)
            NSLog(@"Error: %@",[error localizedDescription]);
        else
            [audioPlayer play];
    }
}

推荐答案

NSString *urlString = [[NSString alloc] initWithData:appDelegate.dataTestingWasteData encoding:NSUTF8StringEncoding];
NSURL *url = [[NSURL alloc] initWithString:urlString];

NSData *wavDATA = [NSData dataWithContentsOfURL:url];
NSError *error;

self.player=[[AVAudioPlayer alloc] initWithData:wavDATA error:&error];
[self.player play];

 

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