.netMVC实现当前页多个数据修改,按钮点击分类别显示
http://blog.csdn.net/hellogv/article/details/6406732
在此文章的代码下做部分改动,已适应自己的需要,主要就是改为播放暂停同一个按钮,便于切换。
更主要的是复习定时器,另外在线音频播放不成功以后再研究吧。
播放器控制类
package com.example.mediaplayer; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.util.Timer; import java.util.TimerTask; import android.media.AudioManager; import android.media.MediaPlayer; import android.media.MediaPlayer.OnBufferingUpdateListener; import android.media.MediaPlayer.OnCompletionListener; import android.media.MediaPlayer.OnErrorListener; import android.os.Handler; import android.os.Message; import android.util.Log; import android.widget.SeekBar; public class Player implements OnBufferingUpdateListener, OnCompletionListener, MediaPlayer.OnPreparedListener ,OnErrorListener{ public MediaPlayer mediaPlayer; private SeekBar skbProgress; private Timer mTimer = new Timer(); public Player() { try { mediaPlayer = new MediaPlayer(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setOnBufferingUpdateListener(this); mediaPlayer.setOnPreparedListener(this); mediaPlayer.setOnCompletionListener(this); } catch (Exception e) { Log.e("mediaPlayer", "error", e); } mTimer.schedule(mTimerTask, 0, 1000); } public void setProgressBar(SeekBar skbProgress) { this.skbProgress = skbProgress; } /** * 通过定时器和Handler来更新进度条 */ TimerTask mTimerTask = new TimerTask() { @Override public void run() { if (mediaPlayer == null) return; if (mediaPlayer.isPlaying() && skbProgress.isPressed() == false) { handleProgress.sendEmptyMessage(0); } } }; //处理消息 Handler handleProgress = new Handler() { public void handleMessage(Message msg) { int position = mediaPlayer.getCurrentPosition(); int duration = mediaPlayer.getDuration(); if (duration > 0) { int pos = skbProgress.getMax() * position / duration; skbProgress.setProgress(pos); } }; }; //初始播放 public void playUrl(String videoUrl) { try { mediaPlayer.reset(); mediaPlayer.setDataSource(videoUrl); mediaPlayer.prepare();// prepare之后自动播放 // File file = new File(videoUrl); // FileInputStream fis = new FileInputStream(file); // mediaPlayer.setDataSource(fis.getFD()); // mediaPlayer.prepare(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } //暂停 public void pause() { mediaPlayer.pause(); } //播放 public void play() { mediaPlayer.start(); } //停止 public void stop() { if (mediaPlayer != null) { mediaPlayer.stop(); mediaPlayer.release(); mediaPlayer = null; } } //判断是否正在播放 public boolean isplaying() { boolean playing = mediaPlayer.isPlaying(); return playing; } /** * 通过onPrepared播放 */ public void onPrepared(MediaPlayer arg0) { arg0.start(); Log.e("mediaPlayer", "onPrepared"); } public void onCompletion(MediaPlayer arg0) { Log.e("mediaPlayer", "onCompletion"); } public void onBufferingUpdate(MediaPlayer arg0, int bufferingProgress) { skbProgress.setSecondaryProgress(bufferingProgress); int currentProgress = skbProgress.getMax() * mediaPlayer.getCurrentPosition() / mediaPlayer.getDuration(); Log.e(currentProgress + "% play", bufferingProgress + "% buffer"); } public boolean onError(MediaPlayer mp, int what, int extra) { return false; } }
界面类
package com.example.mediaplayer; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.SeekBar; public class TestMedia extends Activity { private Button btnPause, btnPlayUrl, btnStop; private SeekBar skbProgress; private Player player; private int first; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); this.setTitle("在线音乐播放---hellogv编写"); btnPlayUrl = (Button) this.findViewById(R.id.btnPlayUrl); btnPlayUrl.setOnClickListener(new ClickEvent()); btnPause = (Button) this.findViewById(R.id.btnPause); btnPause.setOnClickListener(new ClickEvent()); btnStop = (Button) this.findViewById(R.id.btnStop); btnStop.setOnClickListener(new ClickEvent()); skbProgress = (SeekBar) this.findViewById(R.id.skbProgress); skbProgress.setOnSeekBarChangeListener(new SeekBarChangeEvent()); player = new Player(); } class ClickEvent implements OnClickListener { public void onClick(View arg0) { player.setProgressBar(skbProgress); if (arg0 == btnPause) {// 播放暂停按钮 if (player.isplaying())// 如果正在播放则暂停 { player.pause(); btnPause.setText("播放"); } else// 如果暂停则播放 { btnPause.setText("暂停"); if (first == 0)// 初始播放 { String luyin_Path = Environment .getExternalStorageDirectory() .getAbsolutePath() + "/" + "she.mp3"; player.playUrl(luyin_Path); } else// 继续播放 { player.play(); } } first++; } else if (arg0 == btnPlayUrl) { // // 在百度MP3里随便搜索到的,大家可以试试别的链接 // String url = "http://219.138.125.22/myweb/mp3/CMP3/JH19.MP3"; // player.playUrl(url); String music_path = "http://stream19.qqmusic.qq.com/30974808.mp3"; player.playUrl(music_path); } else if (arg0 == btnStop) { player.stop(); } } } class SeekBarChangeEvent implements SeekBar.OnSeekBarChangeListener { int progress; public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { // 原本是(progress/seekBar.getMax())*player.mediaPlayer.getDuration() this.progress = progress * player.mediaPlayer.getDuration() / seekBar.getMax(); } public void onStartTrackingTouch(SeekBar seekBar) { } public void onStopTrackingTouch(SeekBar seekBar) { // seekTo()的参数是相对与影片时间的数字,而不是与seekBar.getMax()相对的数字 player.mediaPlayer.seekTo(progress); } } }
代码下载
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