如何推送一个视图，返回并返回视图？
我想构建一个在 iPhone 上播放本地音频文件的应用程序，但我的一些代码被困住了。 我想知道如何推送视图，返回 uitableviewcontroller 并使用按钮（如媒体播放器中的“正在播放”按钮）返回视图，而不将任何新字符串推入其中。
谢谢
我应该对我的代码进行哪些更改？
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 中
-(IBAction) backtoplayer{
myDetViewCont = [[mPlayerViewController alloc] initWithNibName:@"mPlayerViewController" bundle:nil];
}
I want to build an app for playing local audio files on the iPhone but I'm stuck with some of my codes.
I'm wondering how you can push a view, come back to the uitableviewcontroller and use a button ( like the "NOW PLAYING" button in the media player) to come back to the view without pushing any new string into it..
THANK YOU
What should I change from my codes ?
in the 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
}
in mPlayerViewController.m
-(IBAction) backtoplayer{
myDetViewCont = [[mPlayerViewController alloc] initWithNibName:@"mPlayerViewController" bundle:nil];
}
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如果您已将视图推送到导航控制器上，只需弹出它即可查看下面的视图。
也就是说，您推入
myDetViewCont的视图应该在backtoplayer调用中弹出。If you have pushed a view onto the navigation controller, just pop it to review the view underneath.
That is, the view you push
myDetViewContshould just be popped in thebacktoplayercall.添加到马克所说的内容中。
一旦你 popViewControllerAnimated 并且用户想要再次按下同一个控制器，你只需要保留 mPlayerViewController 而不是释放它。
例如：
To Add to what Mark said.
Once you've popViewControllerAnimated and the user want to push the same controller again, you just need to keep the mPlayerViewController rather than release it.
Such as: