播放本地视频

1.播放本地视频

PlayLocationVideoInSDActivity.java

关键点1：

String path = "/sdcard/TZH.mp4";
//String path2 = ""+Environment.getExternalStorageDirectory()+"/TZH.mp4";//等价上面的地址

关键点2：控制进度条

package com.example.videoplaydemo;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;

import java.io.File;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.MediaController;

import android.widget.Toast;

import android.widget.VideoView;

import java.io.File;

import android.app.Activity;

import android.media.MediaPlayer;

import android.media.MediaPlayer.OnCompletionListener;

import android.media.MediaPlayer.OnErrorListener;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.SeekBar;

import android.widget.Toast;

import android.widget.VideoView;

import android.widget.SeekBar.OnSeekBarChangeListener;

public class PlayLocationVideoInSDActivity extends Activity {

	private final String TAG = "main";

	private EditText et_path;

	private Button btn_play, btn_pause, btn_replay, btn_stop;

	private SeekBar seekBar;

	private VideoView vv_video;

	private boolean isPlaying;

	@Override
	protected void onCreate(Bundle savedInstanceState) {

		// TODO Auto-generated method stub

		super.onCreate(savedInstanceState);

		setContentView(R.layout.acticity_play_sd_video);

		seekBar = (SeekBar) findViewById(R.id.seekBar);

		et_path = (EditText) findViewById(R.id.et_path);

		vv_video = (VideoView) findViewById(R.id.vv_videoview);

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

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

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

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

		btn_play.setOnClickListener(click);

		btn_pause.setOnClickListener(click);

		btn_replay.setOnClickListener(click);

		btn_stop.setOnClickListener(click);

		// 为进度条添加进度更改事件

		seekBar.setOnSeekBarChangeListener(change);

	}

	private OnSeekBarChangeListener change = new OnSeekBarChangeListener() {

		@Override
		public void onStopTrackingTouch(SeekBar seekBar) {

			// 当进度条停止修改的时候触发

			// 取得当前进度条的刻度

			int progress = seekBar.getProgress();

			if (vv_video != null && vv_video.isPlaying()) {

				// 设置当前播放的位置

				vv_video.seekTo(progress);

			}

		}

		@Override
		public void onStartTrackingTouch(SeekBar seekBar) {

		}

		@Override
		public void onProgressChanged(SeekBar seekBar, int progress,

		boolean fromUser) {

		}

	};

	private View.OnClickListener click = new View.OnClickListener() {

		@Override
		public void onClick(View v) {

			switch (v.getId()) {

			case R.id.btn_play:

				play(0);

				break;

			case R.id.btn_pause:

				pause();

				break;

			case R.id.btn_replay:

				replay();

				break;

			case R.id.btn_stop:

				stop();

				break;

			default:

				break;

			}

		}

	};

	protected void play(int msec) {

		Log.i(TAG, " 获取视频文件地址");

		String path = "/sdcard/TZH.mp4";
		//String path2 = ""+Environment.getExternalStorageDirectory()+"/TZH.mp4";//等价上面的地址

		File file = new File(path);

		if (!file.exists()) {

			Toast.makeText(this, "视频文件路径错误", 0).show();

			return;

		}

		Log.i(TAG, "指定视频源路径");

		vv_video.setVideoPath(file.getAbsolutePath());

		Log.i(TAG, "开始播放");

		vv_video.start();

		// 按照初始位置播放

		vv_video.seekTo(msec);

		// 设置进度条的最大进度为视频流的最大播放时长

		seekBar.setMax(vv_video.getDuration());

		// 开始线程，更新进度条的刻度

		new Thread() {

			@Override
			public void run() {

				try {

					isPlaying = true;

					while (isPlaying) {

						// 如果正在播放，没0.5.毫秒更新一次进度条

						int current = vv_video.getCurrentPosition();

						seekBar.setProgress(current);

						sleep(500);

					}

				} catch (Exception e) {

					e.printStackTrace();

				}

			}

		}.start();

		// 播放之后设置播放按钮不可用

		btn_play.setEnabled(false);

		vv_video.setOnCompletionListener(new OnCompletionListener() {

			@Override
			public void onCompletion(MediaPlayer mp) {

				// 在播放完毕被回调

				btn_play.setEnabled(true);

			}

		});

		vv_video.setOnErrorListener(new OnErrorListener() {

			@Override
			public boolean onError(MediaPlayer mp, int what, int extra) {

				// 发生错误重新播放

				play(0);

				isPlaying = false;

				return false;

			}

		});

	}

	/**
	 * 
	 * 重新开始播放
	 */

	protected void replay() {

		if (vv_video != null && vv_video.isPlaying()) {

			vv_video.seekTo(0);

			Toast.makeText(this, "重新播放", 0).show();

			btn_pause.setText("暂停");

			return;

		}

		isPlaying = false;

		play(0);

	}

	/**
	 * 
	 * 暂停或继续
	 */

	protected void pause() {

		if (btn_pause.getText().toString().trim().equals("继续")) {

			btn_pause.setText("暂停");

			vv_video.start();

			Toast.makeText(this, "继续播放", 0).show();

			return;

		}

		if (vv_video != null && vv_video.isPlaying()) {

			vv_video.pause();

			btn_pause.setText("继续");

			Toast.makeText(this, "暂停播放", 0).show();

		}

	}

	/*
	 * 
	 * 停止播放
	 */

	protected void stop() {

		if (vv_video != null && vv_video.isPlaying()) {

			vv_video.stopPlayback();

			btn_play.setEnabled(true);

			isPlaying = false;

		}

	}

}

   

  xml文件：

<?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" >

    

    <EditText

        android:id="@+id/et_path"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="/sdcard/ykzzldx.mp4" />

    

    <SeekBar

        android:id="@+id/seekBar"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" />

    

    <LinearLayout

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

    

        <Button

            android:id="@+id/btn_play"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="播放" />

    

        <Button

            android:id="@+id/btn_pause"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="暂停" />

    

        <Button

            android:id="@+id/btn_replay"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="重播" />

    

        <Button

            android:id="@+id/btn_stop"

            android:layout_width="0dip"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="停止" />

    </LinearLayout>

    

    <VideoView

        android:id="@+id/vv_videoview"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent" />

    

</LinearLayout>