//1.MainActivity.java

package com.example.dell.video;

import android.app.Activity;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.MediaController;
 
import android.widget.VideoView;
public class MainActivity extends Activity {

    private VideoView video;
    private EditText et;
    private Button btn;

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

        initView();
    }

    
 
private void initView() {
        et = (EditText) findViewById(R.id.et1);
        video = (VideoView) findViewById(R.id.video);
        btn = (Button) findViewById(R.id.btn);

      
  btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                MediaController  mediaController 
 
= new MediaController(MainActivity.this);
                //本地視訊
                //String uri = "android.resource://" + getPackageName() + "/" + R.raw.big_buck_bunny;
                //網路視訊 需要開通網路訪問許可權
                String uri = "http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4";
                video.setVideoURI(Uri.parse(uri));
                video.setMediaController(mediaController);
                mediaController.setMediaPlayer(video);
                video.requestFocus();
                video.start();
            }
        });
    }
}

//2.新增網路許可
<uses-permission android:name="android.permission.INTERNET" />

//3.xml檔案

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.video.Main2Activity"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <EditText
            android:id="@+id/et1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="3"
            android:hint="請輸入檔名"/>

        <Button
            android:id="@+id/btn"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="確定"/>
    </LinearLayout>

    <VideoView
        android:id="@+id/video"
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:layout_marginTop="10dp"/>

</LinearLayout>