Question

我实际上想要制作的是一个简单的视频播放器，它可以播放视频＆＃34; Side by Side＆＃34;（适用于虚拟现实纸板）。我使用了两个VideoView来完成此任务。但问题是，播放中存在轻微的显着差异，即;其中一个先播放然后另一个播放音频同样的事情。我只想用VideoView做到这一点。这是我的代码。

main.xml中

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal"
    android:weightSum="2">

    <VideoView
        android:id="@+id/videoL"
        android:layout_width="0dip"
        android:layout_height="match_parent"
        android:layout_weight="1"/>

    <VideoView
        android:id="@+id/videoR"
        android:layout_width="0dip"
        android:layout_height="match_parent"
        android:layout_weight="1"/>

</LinearLayout>

MainActivity.java

package com.mycompany.mycb;

import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import android.net.*;

public class MainActivity extends Activity
{
    VideoView vidL;
    VideoView vidR;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        vidL = (VideoView)findViewById(R.id.videoL);
        vidR = (VideoView)findViewById(R.id.videoR);
        String urlpath = "android.resource://" + getPackageName() + "/" + R.raw.myvideo;
        vidL.setVideoURI(Uri.parse(urlpath));
        vidL.start();
        vidR.setVideoURI(Uri.parse(urlpath));
        vidR.start();
    }
}

Answer 1

找到答案。＆＃34; requestFocus（）方法;＆＃34;解决了这个问题。

vidL.requestFocus();
vidR.requestFocus();

完整的工作代码

MainActivity.java

package com.mycompany.mycb;

import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import android.net.*;

public class MainActivity extends Activity
{
    VideoView vidL;
    VideoView vidR;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        vidL = (VideoView)findViewById(R.id.videoL);
        vidR = (VideoView)findViewById(R.id.videoR);
        String urlpath = "android.resource://" + getPackageName() + "/" + R.raw.myvideo;
        vidL.setVideoURI(Uri.parse(urlpath));
        vidL.requestFocus();
        vidL.start();
        vidR.setVideoURI(Uri.parse(urlpath));
        vidR.requestFocus();
        vidR.start();
    }
}

Answer 2

您需要这种解决方案。仅在两者都准备好时播放两个视频。如果您想播放远程视频，这将非常有用。

public class MainActivity extends Activity {
private VideoView vidL;
private VideoView vidR;

private boolean vidRPrepared;
private boolean vidLPrepared;

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    vidL = (VideoView)findViewById(R.id.videoL);
    vidR = (VideoView)findViewById(R.id.videoR);
    String urlpath = "android.resource://" + getPackageName() + "/" + R.raw.myvideo;
    vidL.setVideoURI(Uri.parse(urlpath));
    vidR.setVideoURI(Uri.parse(urlpath));
    vidL.requestFocus();
    vidR.requestFocus();
    initRVideoView();
    initLVideoView();
}

private void initRVideoView() {
    vidL.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mediaPlayer) {
            vidRPrepared = true;
            startPlaying();
        }
    });
}

private void initLVideoView() {
    vidR.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mediaPlayer) {
            vidLPrepared = true;
            startPlaying();
        }
    });
}

private void startPlaying() {
    if(vidRPrepared && vidLPrepared) {
        vidL.start();
        vidR.start();
    }
}

}

单个活动中的多个VideoView

2 个答案: