Android|Android 双屏异显

Android平板可以外接一块显示器,那么现在如果将VideoView显示在副屏(显示器)上,该如何实现呢?
这里要用到Android的Presentation这个API:点击查看API详情
我们现在新建一个Android项目
首先,先设置权限:


然后新建一个DifferentDislay类,:
package com.remixdemo; import android.app.Presentation; import android.content.Context; import android.net.Uri; import android.os.Bundle; import android.view.Display; import android.widget.LinearLayout; import android.widget.VideoView; import com.remixdemo.media.IjkVideoView; /** * Created by waynian on 2017/9/6. */public class DifferentDisplay extends Presentation { public VideoView videoView; public DifferentDisplay(Context outerContext, Display display) { super(outerContext, display); }@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.play_video); videoView = (VideoView ) findViewById(R.id.video_view); } }

在这个类中,我们设置了一个布局,这个布局很简单,就设置一个VideoViewplay_video.xml的内容如下:

最后在MainActivity文件中设置显示:
public class MainActivity extends AppCompatActivity { private DifferentDisplay presentation; private Display[] presentationDisplays; private VideoView videoView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); DisplayManager displayManager = (DisplayManager)reactContext.getSystemService(Context.DISPLAY_SERVICE); //获取屏幕数量 presentationDisplays = displayManager.getDisplays(); if (presentationDisplays.length > 1) { presentation = new DifferentDisplay(reactContext, presentationDisplays[1]); } else { presentation = new DifferentDisplay(reactContext, presentationDisplays[0]); } presentation.show(); videoView = presentation.videoView; }

【Android|Android 双屏异显】现在VideoView就会显示在副屏上,主屏可以控制VideoView的播放,暂停等操作了。

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