桃词典 Peach Dictionary 简易英语词典app开发 安卓软件开发 Part 2

2.视频背景

（1）在res文件夹下新建raw文件夹。

（2）将准备好的视频素材放入raw文件夹。

(3)进行UI布局和代码处理。

activity_main.xml

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="schemas.android.com/apk/res/and…" xmlns:app="schemas.android.com/apk/res-aut…" xmlns:tools="schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity">

<VideoView
    android:id="@+id/video_background"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:layout_alignParentEnd="true"
    android:layout_alignParentBottom="true"
    android:alpha="1"
    tools:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="0dp" />

</androidx.constraintlayout.widget.ConstraintLayout> MainActivity.java

package com.example.peachdictionary;

import androidx.appcompat.app.AppCompatActivity;

import android.content.pm.ActivityInfo; import android.media.MediaPlayer; import android.net.Uri; import android.os.Bundle; import android.widget.VideoView;

public class MainActivity extends AppCompatActivity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_main);

     //设置此界面为竖屏
     setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
     videobackground();

 }

 private void videobackground() {

     //视频背景
     final VideoView videoview = findViewById(R.id.video_background);
     final String videopath = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.background).toString();
     videoview.setVideoPath(videopath);
     videoview.start();
     videoview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
         @Override
         public void onPrepared(MediaPlayer mp) {
             mp.start();
             mp.setLooping(true);
         }
     });

     videoview.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
         @Override
         public void onCompletion(MediaPlayer mediaPlayer) {
             videoview.setVideoPath(videopath);
             videoview.start();
         }
     });

 }

}

实现效果：

原文链接：blog.csdn.net/weixin_6062…