使用 MPMoviePlayerViewController iOS 4.2 时 AudioToolbox 的 iPhone 内存泄漏

Question

我正在使用以下代码(在标签栏应用程序的 View Controller 内)在用户选择表格行后播放从主包加载的视频。

- (void)loadMoviePlayer:(NSString*)moviePath
{
    NSURL* fileURL    =   [[NSURL alloc] initFileURLWithPath:moviePath];

    MPMoviePlayerViewController* player = [[MPMoviePlayerViewController alloc] initWithContentURL:fileURL];
    [fileURL release];

    [self presentMoviePlayerViewControllerAnimated:player];
    [player release];
}

该应用程序在模拟器中构建和运行时没有任何明显问题(我还没有在设备上测试过)但是当我通过 Instruments 运行它时，在视频播放期间发生内存泄漏。Instruments 将 AudioToolbox 突出显示为“负责库”和 SimAggregateDevice::SimAggregateDevice(_CFString const*, _CFString const*, long&)和

APComponent::CreateDispatchTable(AudioComponentPluginInterface*, unsigned long)

作为“负责框架”。

如果您能对此有所启发，我们将不胜感激!谢谢。

Answer 1

您还可以为 iPhone 和 iPad 的电影播放器​​创建您自己的自定义控件，您可以在其中创建自定义音量管理和许多可以管理的东西。

以下方法启动moview player。用于管理移动

-(void)initAndPlayMovie:(NSURL *)movieURL andViewController:(UIViewController*)vCtr
{
    self.mPlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:movieURL];
    // we have movie from file - Alizee :)
    [self.mPlayer.moviePlayer setMovieSourceType:MPMovieSourceTypeFile];

    // we don't need standard controlls as we have built our own
    [self.mPlayer.moviePlayer setControlStyle:MPMovieControlStyleNone];

    // aspect fit to screen  mode
    [self.mPlayer.moviePlayer setScalingMode:MPMovieScalingModeAspectFit];

    // full screen mode
    [self.mPlayer.moviePlayer setFullscreen:YES animated:YES];

    // to start movie player
    [vCtr presentMoviePlayerViewControllerAnimated:self.mPlayer];

    // now we will add our own view over video player
    self.vCtr.view.frame=CGRectMake(0, 20, self.window.frame.size.width, self.window.frame.size.height-20);

    [self.mPlayer.view addSubview:self.vCtr.view];
}

- (void)stopTapped:(id)sender{
    [self.mPlayer.moviePlayer stop];
}

-(void)moviePlayBackDidFinish:(NSNotification*)notification
{
    [self.mPlayer dismissMoviePlayerViewControllerAnimated];
    [self.vCtr.view removeFromSuperview];
}