iPhone:MPMoviePlayerViewController导航栏上的“添加"按钮 [英] iPhone: Add button on MPMoviePlayerViewController's navigation bar

问题描述

我正在尝试在MPMoviePlayerViewController的navigationcontroller.view上添加按钮.到目前为止，我已经写了以下内容.它没有给出任何错误，但是按钮没有出现在视图中！有人可以告诉我我在做什么错吗?谢谢.

I am trying to add button on MPMoviePlayerViewController's navigationcontroller.view. I have wrote following so far. It doesn't give any error but button isn't appearing on view! Could anyone please tell me what am I doing wrong? Thanks.

        MPMoviePlayerViewController *videoController = [[[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:filePath]] autorelease];
        UIButton *favButton = [UIButton buttonWithType:UIButtonTypeCustom];
        favButton.frame = CGRectMake(280, 25, 30, 30);
        [favButton addTarget:self action:@selector(favouriteButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
    [favButton setBackgroundImage:[UIImage imageNamed:@"unselected.png"] forState:UIControlStateNormal];
        [videoController.navigationController.view addSubview:favButton];
        [self presentMoviePlayerViewControllerAnimated:videoController];


- (void)favouriteButtonClicked:(id)sender
{
    NSLog(@"Inside favourite button clicked");
}

也请尝试使用以下代码添加内容，但是没有运气！

Also try adding using following code but no luck!

        UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(favouriteButtonClicked:)]; 
        videoController.navigationController.navigationItem.rightBarButtonItem=button; 
        [button release];

推荐答案

UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(favouriteButtonClicked:)]; 
videoController.navigationItem.rightBarButtonItem = button; 
[button release];

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