Question

我正在使用iPad / iPhone App＆amp;我正在播放这段代码片段的背景音乐，我在Delegate的didFinishLaunchingWithOptions方法中调用：

-(void) playMusic {
    NSLog(@"play music!");

    NSString *sound_file; 
    if ((sound_file = [[NSBundle mainBundle] pathForResource:@"musicfile" ofType:@"mp3"])){

        NSURL *url = [[NSURL alloc] initFileURLWithPath:sound_file];
        self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
        self.audioPlayer.delegate = self;

        [self.audioPlayer setNumberOfLoops:-1]; // Infinite loop
        [self.audioPlayer prepareToPlay];
        [self.audioPlayer setVolume:0.2];
        [self.audioPlayer play];

    } else {
        NSLog(@"WARN : music file not found!");
    }
    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];

}

但我发现这种方法平均只需要0.43秒，这很多！我是以正确的方式做到的吗？或者有更快的方式来开始音乐播放？请帮忙。

我的环境：iOS5，XCode 4.3，iPad 2.0是我现在用它测试的

iPhone应用程序：开始播放音乐非常慢

0 个答案: