iphone completion completion声音在循环中完成

Question

是否可以在继续编写代码之前强制播放完音频文件？在下面的例子中，我希望一个音频文件可以播放数组中的所有项。当前它只完成循环播放一次。我在AVFoundation框架中使用AVAudioPlayer。

for (int i = 0; i<[Array count]; i++) {
    if ([Array objectAtIndex:i] == @"Red") {
        NSLog(@"red");
        [self.player play];
    }
    if ([Array objectAtIndex:i] == @"Blue") {
        NSLog(@"blue");
        [self.player play];
    }
    if ([Array objectAtIndex:i] == @"Green") {
        NSLog(@"green");
        [self.player play];
    }
    if ([Array objectAtIndex:i] == @"Yellow") {
        NSLog(@"yellow");
        [self.player play];
    }
}

我还使用方法audioPlayerDidFinishPlaying来测试它是否完成了五次，但它只到达该方法一次。

-(void) audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL) completed{
    if ((completed) == YES){
        NSLog(@"audio finish");
        return;
    }
}

是否可以在播放音频时将for循环保持在适当位置？

理论上，控制台应该是:颜色->音频完成->颜色->音频完成->repe

Answer 1

也许你可以在收到finishedPlaying通知时告诉AudioPlayer播放，如下所示：

int arrayIndex = 0
NSArray* array;  //initialized somewhere..


-(void)myFunction
{
  if(arrayIndex < [array length])
  {
    NSArray* colors = [NSArray arrayWithObjects:@"Red",@"Blue",@"Green",@"Yellow",nil];
    if( [colors indexOf:[array objectAtIndex:arrayIndex]] != NSNotFound )
    {
      NSLog( [array objectAtIndex:arrayIndex] );
      [self.player play];
    }
    arrayIndex++;
  }else{
    NSLog(@"audio finish");
  }
}

-(void) audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)     completed{
    if ((completed) == YES){
      [self myFunction];
    }
}

-(void)start_it_up
{
  arrayIndex = 0;
  [self myFunction];
}