iphone – 如何推视图,回去看看？

我想制作一个应用程序来播放iPhone上的本地音频文件,但是我遇到了一些我的代码.
我想知道如何推送视图,回到uitableviewcontroller并使用按钮(如媒体播放器中的“NOW PLAYING”按钮)返回到视图,而不需要插入任何新的字符串.

谢谢

我的代码应该怎么改？

在uitableviewcontroller ..

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath
    *)indexPath  {  
selectedSong = [directoryContent objectAtIndex:indexPath.row];  
NSString *storyLin = [[directoryContent objectAtIndex:[indexPath row]] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];  
patch = [NSString stringWithFormat:@"/%@",storyLin];


        myDetViewCont = [[mPlayerViewController alloc] initWithNibName:@"mPlayerViewController" bundle:nil];    
myDetViewCont.myProgLang = selectedSong; // assigning the correct value to the variable inside DetailViewController
        [self.navigationController pushViewController:myDetViewCont animated:YES];
        [myDetViewCont release]; // releasing controller from the memory

    }

在mPlayerViewController.m

-(IBAction) backtoplayer{
    myDetViewCont = [[mPlayerViewController alloc] initWithNibName:@"mPlayerViewController" bundle:nil];
}

- (IBAction)backToPlayer:(id)sender {
    [self.navigationController popViewControllerAnimated:YES];
}