用于AvAudioPlayer播放进度的UIProgressBar

Question

在我的应用程序中播放audiofile，因为我想在UIToolbar上为audiofile播放进度显示UIProgressBar。任何人都可以帮助我如何编写代码。

Answer 1

我用一个定时器来检查当前时间，然后每半秒更新我的进度条，就像这样：

tmrCounter = [NSTimer scheduledTimerWithTimeInterval:0.5f target:self selector:@selector(updateElapsedTime) userInfo:nil repeats:YES]; 

-(void)updateElapsedTime{ 
    if (player) { 
     [prgIndicator setProgress:[player currentTime]/[player duration]]; 
     [lblTime setText:[NSString stringWithFormat:@"%@", [self formatTime:[player currentTime]]]]; 
    } 
} 

-(NSString*)formatTime:(float)time{ 
    int minutes = time/60; 
    int seconds = (int)time % 60; 
    return [NSString stringWithFormat:@"%@%d:%@%d", minutes/10 ? [NSString stringWithFormat:@"%d", minutes/10] : @"", minutes % 10, [NSString stringWithFormat:@"%d", seconds/10], seconds % 10]; 
} 

希望这有助于！