surfaceView+mediaplayer+seekBar+自定义视频时间监控

这些天一直都在写一个视频播放器，碰到了很多意想不到的问题，在这里，我把部分代码分享一下：

package com.xbys;import java.io.InputStream;import java.util.ArrayList;import java.util.HashMap;import android.annotation.SuppressLint;import android.app.Activity;import android.media.AudioManager;import android.media.MediaPlayer;import android.media.MediaPlayer.OnCompletionListener;import android.media.MediaPlayer.OnPreparedListener;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.os.SystemClock;import android.view.Choreographer;import android.view.SurfaceHolder;import android.view.SurfaceHolder.Callback;import android.view.SurfaceView;import android.view.View;import android.view.ViewGroup;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.Chronometer;import android.widget.GridView;import android.widget.ImageButton;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.SimpleAdapter;import android.widget.TextView;import android.widget.Toast;import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu;import com.xbys.io.StreamTools;import com.xbys.network.NetWorkType;import com.xbys.timer.GetVideotime;public class MainActivity extends Activity {private GridView gridView;String[] imageName = {"学习目标","知识内容","实践","知识结构","学习指南","练习","案例","常见问题"};int[] image = {R.drawable.xuexi3,R.drawable.xuexi1,R.drawable.xuexi2,R.drawable.xuexi3,R.drawable.xuexi5,R.drawable.xuexi6,R.drawable.xuexi7,R.drawable.xuexi3,};private static final int CHANGE = 0;private SlidingMenu menu;private TextView tv_content = null ;InputStream is;String detail;private SurfaceView sv;private ImageButton video_play ;private ImageButton video_screen;MediaPlayer mediaPlayer;private int currentPosition = 0 ;private boolean isplay = true;private PlayVideo playVideo;private SeekBar seekBar;private int max;private int i = 1;private int j = 1;int second = 0;int minute = 0;private int flag1;private int flag2;private int progress;private int firstFlag = 0;private boolean isflag = true;private int position3;private boolean isPlaying = true;private TextView timer_long;private TextView play_timer;@SuppressLint("NewApi")@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);seekBar = (SeekBar)findViewById(R.id.seekBar);timer_long = (TextView) findViewById(R.id.timer_long);play_timer = (TextView)findViewById(R.id.play_timer);seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {// TODO Auto-generated method stubprogress = seekBar.getProgress();isflag = false;flag1 = progress / 1006;firstFlag++;if(firstFlag!=1){j = 1;second = 0;minute = 0;}if(mediaPlayer!=null&&mediaPlayer.isPlaying()){mediaPlayer.seekTo(progress);}}@Overridepublic void onStartTrackingTouch(SeekBar arg0) {// TODO Auto-generated method stub}@Overridepublic void onProgressChanged(SeekBar seekBar, final int flag, boolean arg2) {// TODO Auto-generated method stubif(isflag){if (flag / 1006 == i) {i++;second++;if (second == 60) {minute++;second = 0;}if(second<10){play_timer.setText(minute + ":" +"0"+ second);}else{play_timer.setText(minute + ":" + second);}}}else{/** * 控制进度条 *  *  */// 小于60s时if (flag1 < 60) {//second = flag1;/*if (second < 10) {play_timer.setText(minute + ":" + "0" + second);} else {play_timer.setText(minute + ":" + second);}*/if (flag/1006-flag1 == j) {System.out.println("是否执行到这里====="+j);System.out.println("是否执行到这里====="+second);j++;second = flag1+j;if (second == 60) {minute++;second = 0;}if (second < 10) {play_timer.setText(minute + ":" + "0" + second);} else {play_timer.setText(minute + ":" + second);}}}// 大于60sif (flag1 >= 60) {flag2 = flag1/60;minute = flag2;second = flag2%60;if (second < 10) {play_timer.setText(minute + ":" + "0" + second);} else {play_timer.setText(minute + ":" + second);}if (flag/1006-flag1 == j) {j++;second = second+j;if (second == 60) {minute++;second = 0;}if (second < 10) {play_timer.setText(minute + ":" + "0" + second);} else {play_timer.setText(minute + ":" + second);}}}/** * 控制进度条结束 */}if(flag<max&&flag>max-500){i = 1;second = 0;minute = 0;}}});gridView =  (GridView) findViewById(R.id.gridview);video_play = (ImageButton) findViewById(R.id.video_play);video_screen = (ImageButton)findViewById(R.id.screen);video_play.setBackground(getResources().getDrawable(R.drawable.play));video_play.setOnClickListener(new VideoPlayerListener());sv = (SurfaceView) findViewById(R.id.sv);sv.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);//回调方法sv.getHolder().addCallback(new Callback(){@Overridepublic void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,int arg3) {// TODO Auto-generated method stub}@Overridepublic void surfaceCreated(SurfaceHolder arg0) {// TODO Auto-generated method stubif(currentPosition>0){new PlayVideo(currentPosition).start();}}@Overridepublic void surfaceDestroyed(SurfaceHolder arg0) {// TODO Auto-generated method stubif(mediaPlayer!=null&&mediaPlayer.isPlaying()){currentPosition = mediaPlayer.getCurrentPosition();stop();}}});//侧拉菜单 menu = new SlidingMenu(this);        menu.setMode(SlidingMenu.RIGHT);        menu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);        menu.setShadowWidthRes(R.dimen.activity_horizontal_margin);        //menu.setShadowDrawable(R.drawable.yuefu);        menu.setBehindOffsetRes(R.dimen.activity_horizontal_margin);        menu.setFadeDegree(0.5f);        menu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);        menu.setMenu(R.layout.slidingmenu);                //将资源文件夹中的文本读到tv_content上tv_content = (TextView) findViewById(R.id.tv_content);             //变换标题栏的背景getActionBar().setBackgroundDrawable(this.getBaseContext().        getResources().getDrawable(R.drawable.skinpic_blue));        getActionBar().show();        ArrayList<HashMap<String, Object>>  list=new ArrayList<HashMap<String,Object>>();for(int i=0;i<8;i++){HashMap<String, Object>  map = new HashMap<String, Object>();   map.put("ItemImage", image[i]);   map.put("imageName", imageName[i]);   list.add(map);}SimpleAdapter   adapter = new SimpleAdapter(this, list,R.layout.griview_item,new String[]{"ItemImage","imageName"},  new int[]{R.id.gridview_imageview,R.id.gridview_textview}); gridView.setAdapter(adapter);gridView.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int position,long arg3) {// TODO Auto-generated method stubswitch (position) {case 0: detail = StreamTools.getStream("resources/dbms.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;case 1:detail = StreamTools.getStream("resources/content_1.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;case 2:detail = StreamTools.getStream("resources/content_1.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;case 3:detail = StreamTools.getStream("resources/content_1.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;case 4:detail = StreamTools.getStream("resources/content_1.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;case 5:detail = StreamTools.getStream("resources/content_1.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;case 6:detail = StreamTools.getStream("resources/content_1.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;case 7:detail = StreamTools.getStream("resources/content_1.txt", MainActivity.this);tv_content.setText(detail);menu.showMenu();break;default:break;}}});}class PlayVideo extends Thread{int currentPosition;public PlayVideo(int currentPosition) {super();this.currentPosition = currentPosition;}@Overridepublic void run() {// TODO Auto-generated method stubplay(currentPosition);super.run();}}class VideoPlayerListener  implements OnClickListener{@SuppressWarnings("deprecation")@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.video_play:new NetWorkType().isWifi(MainActivity.this);if(isplay){video_play.setBackground(getResources().getDrawable(R.drawable.pause));new PlayVideo(currentPosition).start();isplay = false;}else{pause();video_play.setBackground(getResources().getDrawable(R.drawable.play));isplay = true;}break;/*case R.id.screen:ViewGroup.LayoutParams lp = sv.getLayoutParams();lp.height = LayoutParams.MATCH_PARENT;lp.width = LayoutParams.MATCH_PARENT;System.out.println(lp.width);sv.setLayoutParams(lp);break;*/default:break;}}}/** * 播放视频 * @param currentPosition */private void play(final int currentPosition2) {String path = "http://192.168.194.51:8080/xbys/oppop.mp4";try {mediaPlayer = new MediaPlayer();mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);mediaPlayer.setDisplay(sv.getHolder());mediaPlayer.setDataSource(path);mediaPlayer.prepareAsync();// mediaPlayer.seekTo(currentPosition);mediaPlayer.setOnPreparedListener(new OnPreparedListener() {@Overridepublic void onPrepared(MediaPlayer mp) {// TODO Auto-generated method stubmediaPlayer.start();mediaPlayer.seekTo(currentPosition2);max = mediaPlayer.getDuration();String timer = new GetVideotime().TimeLong(max);timer_long.setText(timer);new Thread(){public void run() {seekBar.setMax(max);while(mediaPlayer!=null&&mediaPlayer.isPlaying()){ position3 = mediaPlayer.getCurrentPosition();seekBar.setProgress(position3);}try {Thread.sleep(500);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}};}.start();}});mediaPlayer.setOnCompletionListener(new OnCompletionListener() {@Overridepublic void onCompletion(MediaPlayer arg0) {// TODO Auto-generated method stubmediaPlayer.seekTo(0);video_play.setBackground(getResources().getDrawable(R.drawable.play));seekBar.setProgress(0);play_timer.setText(0+":"+"00");//isplay = true;}});} catch (Exception e) {// TODO Auto-generated catch blockToast.makeText(this, "播放失败", 0).show();e.printStackTrace();}}/** * 停止播放音乐 */private void stop() {// TODO Auto-generated method stubif (mediaPlayer != null && mediaPlayer.isPlaying()) {mediaPlayer.stop();mediaPlayer.release();mediaPlayer = null;}}private void pause() {// TODO Auto-generated method stubif (mediaPlayer != null && mediaPlayer.isPlaying()) {currentPosition = mediaPlayer.getCurrentPosition();mediaPlayer.pause();}}@Overrideprotected void onDestroy() {// TODO Auto-generated method stubstop();super.onDestroy();}}

写的非常乱，但是基本能实现视频播放，如果其中有隐含的bug，希望大牛们能够指导我，我的功力尚浅！