视频播放器MP4的简单实现

截图：

其实视频播放器的实现与音乐播放器的实现没有太大的区别。主要体现在：

1)main.xml

增加了<ImageView />(用来显示图片按钮)、<SurfaceView />(用来作为屏幕)

2)MainActivity

其实大部分还是一样的。只是在MP3音乐播放器的基础上早合适的位置上增加了以下：

SurfaceHolder holder = surfaceView.getHolder();holder.setFixedSize(176, 144);//设置分辨率holder.setKeepScreenOn(true);//保持屏幕高亮holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);//不维持缓冲,得到数据后直接输出

mp.setDisplay(surfaceView.getHolder());//设置显示画面

代码如下：

1、main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" android:background="@android:color/white"><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="女神牌mp4视频播放器"/><EditText android:id="@+id/et_name"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="oppo.mp4"/><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"><ImageView android:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/play"android:onClick="play"android:layout_marginRight="10dp"/><ImageView android:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/pause"android:onClick="pause"android:layout_marginRight="10dp"/><ImageView android:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/stop"android:onClick="stop"android:layout_marginRight="10dp"/><ImageView android:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/reset"android:onClick="reset"android:layout_marginRight="10dp"/></LinearLayout><SurfaceView android:id="@+id/sv_info"android:layout_width="fill_parent"android:layout_height="224dp"/>
</LinearLayout>

2、MainActivity

package com.NJUPT.mp4_1;import java.io.File;import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.view.Menu;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;public class MainActivity extends Activity {private MediaPlayer mp;private File file;private EditText et_name;private boolean pause;private int position = 0;private SurfaceView surfaceView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);et_name = (EditText) findViewById(R.id.et_name);surfaceView = (SurfaceView) findViewById(R.id.sv_info);SurfaceHolder holder = surfaceView.getHolder();holder.setFixedSize(176, 144);holder.setKeepScreenOn(true);holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);}public void play(View v) {String name = et_name.getText().toString();file = new File(Environment.getExternalStorageDirectory(), name);if (!file.exists()) {Toast.makeText(this, "sorry,视频文件不存在", 1).show();} else {play();}}public void play() {try {mp = new MediaPlayer();mp.reset();mp.setDataSource(file.getAbsolutePath());mp.setDisplay(surfaceView.getHolder());mp.prepare();mp.setOnPreparedListener(new MyOnPrepareListener());} catch (Exception e) {e.printStackTrace();}}private class MyOnPrepareListener implements OnPreparedListener {@Overridepublic void onPrepared(MediaPlayer mp) {mp.start();}}public void pause(View v) {if (mp != null) {if (mp.isPlaying()) {mp.pause();pause = true;} else {mp.start();pause = false;}}}public void stop(View v) {if (mp != null) {mp.stop();}}public void reset(View v) {stop(v);play();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

源代码下载地址为：

http://download.csdn.net/detail/caihongshijie6/6285127