java - 按下后退出全屏视频模式

Question

我刚刚开始使用这个GMF Google 提供的示例。

我想知道如何通过点击后退按钮退出全屏视频模式，我尝试使用下面的代码，但没有取得任何成功，

here你可以看到MainActivity.java的实际代码

boolean isFullScreen = false; // globally declared

@Override
public void onGoToFullscreen() {
    isFullScreen = true;
    videoListView.setVisibility(View.INVISIBLE);
}

@Override
public void onReturnFromFullscreen() {
    videoListView.setVisibility(View.VISIBLE);
}

@Override
public void onBackPressed() {
    if(isFullScreen) {
        onReturnFromFullscreen();
    }
    else {
        super.onBackPressed();
    }
}

Answer 1

假设您已围绕 Demo 构建应用程序，在演示应用中，com.google.googlemediaframeworkdemo.demo.adplayer 包中有 ImaPlayer 类，其中包含两个 SimpleVideoPlayer 引用，并且顾名思义，一种是显示添加，一种是显示内容。

  /**
   * Plays the ad.
   */
  private SimpleVideoPlayer adPlayer;

 /**
   * Plays the content (i.e. the actual video).
   */
  private SimpleVideoPlayer contentPlayer;

要退出全屏，您需要在 SimpleVideoPlayer 上调用 setFullscreen(false)

public void setFullscreen(boolean shouldBeFullscreen)

Make the player enter or leave fullscreen mode.

Parameters:
    shouldBeFullscreen - If true, the player is put into fullscreen mode. If false, the player leaves fullscreen mode.

由于两个 SimpleVideoPlayer 都被声明为私有(private)，因此您无法访问它们。这里有两个解决方案来解决这个问题:

解决方案 1:

在ImaPlayer类中为adPlayer和contentPlayer创建getter

public SimpleVideoPlayer getAdPlayer(){
    return this.adPlayer;
}

public SimpleVideoPlayer getContentPlayer(){
    return this.ContentPlayer;
}

在处理后退键的 MainActivity 中对此进行修改

@Override
public void onBackPressed() {
    if(isFullScreen) {
        imaPlayer.getAdPlayer().setFullscreen(false);
        imaPlayer.getContentPlayer().setFullscreen(false);
        // after this calls you will see that your callback method onReturnFromFullscreen() will be called
    }
    else {
        super.onBackPressed();
    }
}

解决方案 2:

在ImaPlayer类中添加以下代码:

public void exitFullscreen(){

 if (adPlayer != null) {
          adPlayer.setFullscreen(false);
        }
        contentPlayer.setFullscreen(false);
        //again after this calls you will see that your callback method onReturnFromFullscreen() will be called  
     }
 }

如果您尚未围绕演示应用程序构建它，则需要调用视频播放器(最有可能是 SimpleVideoPlayer)setFullscreen(false)