MP3播放器，带卡拉OK字幕，(源码)

package com.Aina.Android; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FilenameFilter; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.List; import java.util.TreeMap; import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.app.AlertDialog.Builder; import android.content.ActivityNotFoundException; import android.content.ComponentName; import android.content.DialogInterface; import android.content.Intent; import android.content.DialogInterface.OnClickListener; import android.content.pm.ActivityInfo; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.media.MediaPlayer.OnErrorListener; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.ListView; import android.widget.ScrollView; import android.widget.SeekBar; import android.widget.TextView; import android.widget.Toast; public class ActivityMain extends Activity{ /** Called when the activity is first created. */ private ViewlrcKLOK viewlrcKLOK; private MediaPlayer mMediaPlayer = null; private SeekBar mSeekBar = null; private ListView mListView = null; private ImageButton mLastbtn = null; private ImageButton mStartbtn = null; private ImageButton mPausebtn = null; private ImageButton mStopbtn = null; private ImageButton mNextbtn = null; private TextView mTextView = null; private ScrollView scrollview =null; private ImageView header =null; private TextView lrc = null; private List<String> mMusiclist = null; private int mCurrent = 0; private int count = 0; private boolean isrun = false; private boolean isauto = false; private static final String PATH = "/sdcard/mp3/"; private static TreeMap<Integer, lrcObject> lrc_map; private static int lrc_timeend =0; private long KeyDownOldTime =0; private int KeyDownCount =0; private String songName =""; private String songAuthor =""; private NotificationManager mNotificationManager; private static int NOTIFICATIONS_ID = R.layout.main; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mListView = (ListView) this.findViewById(R.id.lv_music); mSeekBar = (SeekBar) this.findViewById(R.id.SeekBar01); mTextView = (TextView) this.findViewById(R.id.mTextView); viewlrcKLOK = (ViewlrcKLOK) this.findViewById(R.id.lrc_view); lrc = (TextView) this.findViewById(R.id.lrc); scrollview = (ScrollView) this.findViewById(R.id.scrollview); mLastbtn = (ImageButton) this.findViewById(R.id.imgbtn_last); mStartbtn = (ImageButton) this.findViewById(R.id.imgbtn_start); mPausebtn = (ImageButton) this.findViewById(R.id.imgbtn_pause); mStopbtn = (ImageButton) this.findViewById(R.id.imgbtn_stop); mNextbtn = (ImageButton) this.findViewById(R.id.imgbtn_next); header = (ImageView) this.findViewById(R.id.header); mMusiclist = new ArrayList<String>(); mMediaPlayer = new MediaPlayer(); lrc_map = new TreeMap<Integer, lrcObject>(); viewlrcKLOK.SetlrcContent("歌词",0,0,"......",0); lrc_timeend = 0; lrc.setVisibility(View.GONE); mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); mMediaPlayer.setOnPreparedListener(prepareListener); mMediaPlayer.setOnCompletionListener(CompletionListener); mMediaPlayer.setOnErrorListener(ErrorListener); // 开始按钮 mStartbtn.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) { //lrc.setVisibility(View.GONE); //控件隐藏 PlayMusic(PATH + mMusiclist.get(mCurrent)); } }); // 下一首 mNextbtn.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub NextMusic(); } }); // 上一首 mLastbtn.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub LastMusic(); } }); // 暂停 mPausebtn.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub isrun = true; isauto = false; mPausebtn.setVisibility(View.GONE);// 隐藏暂停按钮 mStartbtn.setVisibility(View.VISIBLE);// 显示启动按钮 // 是否正在播放 if (mMediaPlayer.isPlaying()) { viewlrcKLOK.Stop(); mMediaPlayer.pause(); } } }); // 停止 mStopbtn.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub StopMusic(); } }); mListView.setOnItemClickListener(new ListView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { mCurrent = arg2; StopMusic(); PlayMusic(PATH + mMusiclist.get(mCurrent)); } }); mSeekBar .setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { if (!isauto) { mMediaPlayer.seekTo(progress); } } @Override public void onStartTrackingTouch(SeekBar seekBar) { isauto = false; } @Override public void onStopTrackingTouch(SeekBar seekBar) { isauto = true; } }); this.MusicList(); } private void setPlayint(String tickerText, String title, String content, int drawable) { Notification notification = new Notification(drawable, tickerText, System.currentTimeMillis()); PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, ActivityMain.class), 0); notification.setLatestEventInfo(this, title, content, contentIntent); mNotificationManager.notify(NOTIFICATIONS_ID, notification); } private MediaPlayer.OnPreparedListener prepareListener = new MediaPlayer.OnPreparedListener(){ public void onPrepared(MediaPlayer mp){ isrun = true; setPlayint(songAuthor,songName, songAuthor, R.drawable.icon); lrc_timeend = 0; viewlrcKLOK.SetlrcContent("准备好",0,0,"go,go,go..",0); viewlrcKLOK.Star(); count = mMediaPlayer.getDuration(); Log.i("TAG-count", count + ""); mSeekBar.setMax(count);// 设置最大值. mTextView.setText("当前播放歌曲:" + mMusiclist.get(mCurrent)); mp.start(); //开始播放 //Toast.makeText(ActivityMain.this, "开始播放",Toast.LENGTH_SHORT).show(); myHandler.sendEmptyMessage(PROGRESS_CHANGED); } }; //视频播放完成 private MediaPlayer.OnCompletionListener CompletionListener=new MediaPlayer.OnCompletionListener(){ @Override public void onCompletion(MediaPlayer arg0) { mMediaPlayer.stop(); isauto = true; mSeekBar.setProgress(0); viewlrcKLOK.SetlrcContent("准备好",0,0,"... ...",0); viewlrcKLOK.Stop(); //Toast.makeText(ActivityMain.this, "播放完成:",Toast.LENGTH_SHORT).show(); NextMusic(); } }; //播放时发现错误 private MediaPlayer.OnErrorListener ErrorListener=new MediaPlayer.OnErrorListener(){ @Override public boolean onError(MediaPlayer mp, int what, int extra) { // TODO Auto-generated method stub mMediaPlayer.stop(); Toast.makeText(