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播放按鈕顯示，當我按下播放按鈕時，它正在播放音頻文件並將播放按鈕變成暫停按鈕，但是當我按暫停按鈕暫停時。它並沒有暫停，而是從開始時再播放音頻文件。暫停按鈕被按下不顯示播放按鈕後再次暫停按鈕在切換播放/暫停時不工作
UIButton *playpauseButton = [UIButton buttonWithType:UIButtonTypeCustom];
[playpauseButton addTarget:self action:@selector(playpauseAction:) forControlEvents:UIControlEventTouchUpInside];
playpauseButton.frame = CGRectMake(0, 0, 50, 50);
[playpauseButton setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];
[playpauseButton setImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateSelected];
UIBarButtonItem *playpause = [[UIBarButtonItem alloc] initWithCustomView:playpauseButton];
-(void)playpauseAction:(id)sender
{
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"theme"
ofType:@"mp3"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:filePath];
audioPlayer = [[AVAudioPlayer alloc]
initWithContentsOfURL:fileURL error:nil];
[fileURL release];
if
([audioPlayer isPlaying]){
[sender setImage:[UIImage imageNamed:@"play.png"] forState:UIControlStateNormal];
[audioPlayer pause];
} else {
[sender setImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateNormal];
[audioPlayer play];
}
}
如何使暫停按鈕的工作，一旦暫停按下再次顯示播放按鈕。
感謝您的幫助。