VideoView播放SD卡上视频的例子

先上代码:

Java代码


package cn.com;

import android.app.Activity;

import android.net.Uri;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.MediaController;

import android.widget.TextView;

import android.widget.Toast;

import android.widget.VideoView;

public class Play3G extends Activity {

private TextView videoPath;

private VideoView videoview;

private String strVideoPath = "";

private Button video1, video2;

private String TAG = "HIPPO_VIDEOVIEW";

/* 默认判别是否安装存储卡flag为false */

private boolean bIfSDExist = false;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//检查是否存在SD卡

checkTheSdCard();

videoPath = (TextView) findViewById(R.id.videoPath);

videoview = (VideoView) findViewById(R.id.videoview);

video1 = (Button) findViewById(R.id.video1);

video2 = (Button) findViewById(R.id.video2);

video1.setOnClickListener(new Button.OnClickListener() {

public void onClick(View arg0) {

// TODO Auto-generated method stub

if (bIfSDExist) {

/* 播放影片路径1 */

strVideoPath = "file:///sdcard/test.mp4";

playVideo(strVideoPath);

}

}

});

video2.setOnClickListener(new Button.OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

if (bIfSDExist) {

/* 播放影片路径2 */

strVideoPath = "file:///sdcard/test.3gp";

playVideo(strVideoPath);

}

}

});

}

/* 自定义以VideoView播放影片 */

private void playVideo(String strPath) {

if (strPath != "") {

/* 调用VideoURI方法，指定解析路径 */

videoview.setVideoURI(Uri.parse(strPath));

/* 设置控制Bar显示于此Context中 */

videoview.setMediaController(new MediaController(Play3G.this));

videoview.requestFocus();

/* 调用VideoView.start()自动播放 */

videoview.start();

if (videoview.isPlaying()) {

/* 下程序不会被运行，因start()后尚需要preparing() */

videoPath.setText("Now Playing:" + strPath);

Log.i(TAG, strPath);

}

}

}

// 检查是否存在SD卡

public void checkTheSdCard() {

/* 判断存储卡是否存在 */

if (android.os.Environment.getExternalStorageState().equals(

android.os.Environment.MEDIA_MOUNTED)) {

bIfSDExist = true;

} else {

bIfSDExist = false;

mMakeTextToast(getResources().getText(R.string.str_err_nosd)

.toString(), true);

}

}

// 弹出提示对话框

public void mMakeTextToast(String str, boolean isLong) {

if (isLong == true) {

Toast.makeText(Play3G.this, str, Toast.LENGTH_LONG).show();

} else {

Toast.makeText(Play3G.this, str, Toast.LENGTH_SHORT).show();

}

}

}

2.main.xml文件

Java代码


<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:background="@drawable/white" android:orientation="vertical"

android:layout_width="fill_parent" android:layout_height="fill_parent">

<TextView android:id="@+id/videoPath" android:layout_width="fill_parent"

android:layout_height="wrap_content" android:textColor="@drawable/blue"

android:text="@string/hello" />

<VideoView android:id="@+id/videoview" android:layout_width="320px"

android:layout_height="240px" />

<LinearLayout android:orientation="horizontal"

android:layout_width="wrap_content" android:layout_height="wrap_content">

<Button android:id="@+id/video1" android:layout_width="wrap_content"

android:layout_height="wrap_content" android:text="@string/str_button1" />

<Button android:id="@+id/video2" android:layout_width="wrap_content"

android:layout_height="wrap_content" android:text="@string/str_button2" />

</LinearLayout>

</LinearLayout>

3.color.xml文件

Java代码


<?xml version="1.0" encoding="utf-8"?>

<resources>

<drawable name="darkgray">#808080</drawable>

<drawable name="white">#FFFFFF</drawable>

<drawable name="blue">#0000FF</drawable>

</resources>

以上只是简单播放本地视频,稍后会贴上播放网络视频的例子