ios - iOS 是否支持 WAV 文件？

Question

我有一个在浏览器中可以正常播放的 wav 文件:

https://d5e5ca34-f670-4a7f-98c7-1643d83ecc1d:N8UAQQPXw10Z@stream.watsonplatform.net/text-to-speech/api/v1/synthesize?accept=audio/wav&voice=en-US_MichaelVoice&text=Hello%20world

但是，它没有在我的模拟器上播放。iOS 对 wav 文件的支持是否有一些限制？

  NSString *urlString = @"https://d5e5ca34-f670-4a7f-98c7-1643d83ecc1d:N8UAQQPXw10Z@stream.watsonplatform.net/text-to-speech/api/v1/synthesize?accept=audio/wav&voice=en-US_MichaelVoice&text=Hello%20world";
  NSURL *url = [NSURL URLWithString:urlString];
  NSData *audioData=[NSData dataWithContentsOfURL:url];

  NSError *error;
  self.player = [[AVAudioPlayer alloc] initWithData:audioData error:&error];
  [self.player setVolume:1.0];
  [self.player setDelegate:self];
  [self.player setNumberOfLoops:0];
  [self.player prepareToPlay];
  [self.player play];

Answer 1

您的 wav 音频文件有问题。它与 Apple 编解码器不兼容。我尝试了一个不同的在线 wav 文件并且它有效。这是我的工作代码。确保在您的 info.plist 文件中添加“App Transport Security Settings”

在 *.h 中

#import <UIKit/UIKit.h>
#include <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVAudioPlayer.h>

@interface v1MyCustomAudioPlay : UIViewController <AVAudioPlayerDelegate>

@property (nonatomic, retain) AVAudioPlayer *myAudioPlayer1;

在*.m

@implementation v1MyCustomAudioPlay

@synthesize myAudioPlayer1;

-(IBAction)playAudio
{
    NSLog(@"playAudio ...");

    NSString *urlString = @"http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/Samples/AFsp/M1F1-Alaw-AFsp.wav";
    NSURL *fileURL = [NSURL URLWithString:urlString];

    NSData *soundData = [NSData dataWithContentsOfURL:fileURL];
    myAudioPlayer1 = [[AVAudioPlayer alloc] initWithData:soundData  error:NULL];
    myAudioPlayer1.delegate = self;
    [myAudioPlayer1 play];

}

-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{
    [myAudioPlayer1 stop];
    NSLog(@"Finished Playing");
}

- (void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError *)error
{
    NSLog(@"Error occurred");
}