android视频播放器Media
2016-05-11 13:47
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xml:
package com.itheima.musicplayer; import java.io.File; import java.io.IOException; import java.util.Timer; import java.util.TimerTask; import android.app.Activity; import android.media.AudioManager; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceHolder.Callback; import android.view.SurfaceView; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; import android.widget.Toast; public class MainActivity extends Activity { private EditText et_path; private MediaPlayer mediaPlayer; private Button bt_play,bt_pause,bt_stop,bt_replay; private SurfaceView sv; private SurfaceHolder holder; private int position; private String filepath; private SeekBar seekBar1; private Timer timer; private TimerTask task; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); et_path = (EditText) findViewById(R.id.et_path); bt_play = (Button) findViewById(R.id.bt_play); bt_pause = (Button) findViewById(R.id.bt_pause); bt_stop = (Button) findViewById(R.id.bt_stop); bt_replay = (Button) findViewById(R.id.bt_replay); seekBar1 = (SeekBar) findViewById(R.id.seekBar1); //滚动条 seekBar1.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override // public void onStopTrackingTouch(SeekBar seekBar) { int postion = seekBar.getProgress();//得到用户拖到滚动条的位置,然后播放视频 mediaPlayer.seekTo(postion); } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { } }); //得到surfaceview sv = (SurfaceView) findViewById(R.id.sv); //得到显示界面内容的容器 holder = sv.getHolder(); //在低版本模拟器上运行记得加上下面的参数。不自己维护双缓冲区,而是等待多媒体播放框架主动的推送数据。 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); //用于程序在播放时按home键退出时的监听 holder.addCallback(new Callback() { @Override public void surfaceDestroyed(SurfaceHolder holder) { System.out.println("destoryed"); if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ //////************************************ position = mediaPlayer.getCurrentPosition(); //记录点信息 mediaPlayer.stop(); mediaPlayer.release();//释放资源 mediaPlayer = null; timer.cancel(); task.cancel(); timer = null; task = null; } } @Override public void surfaceCreated(SurfaceHolder holder) { System.out.println("created"); if(position>0){ //记录的有播放进度。 try { mediaPlayer = new MediaPlayer(); mediaPlayer.setDataSource(filepath);//设置播放的数据源。 mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setDisplay(holder); mediaPlayer.prepare();//准备开始播放 播放的逻辑是c代码在新的线程里面执行。 mediaPlayer.start(); //从开始记录的点开始播视频position mediaPlayer.seekTo(position); bt_play.setEnabled(false); //播放完了的监听器 mediaPlayer.setOnCompletionListener(new OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { bt_play.setEnabled(true); } }); int max = mediaPlayer.getDuration(); seekBar1.setMax(max);//最大值 timer = new Timer(); task = new TimerTask() { @Override public void run() { seekBar1.setProgress(mediaPlayer.getCurrentPosition()); } }; timer.schedule(task, 0, 500); } catch (IOException e) { e.printStackTrace(); } } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { System.out.println("changed"); } }); } /** * 播放 * @param view */ public void play(View view) { filepath = et_path.getText().toString().trim(); File file = new File(filepath); if(file.exists()){ try { mediaPlayer = new MediaPlayer(); mediaPlayer.setDataSource(filepath);//设置播放的数据源。 mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setDisplay(holder); mediaPlayer.prepare();//准备开始播放 播放的逻辑是c代码在新的线程里面执行。 mediaPlayer.start(); //设置拖动进度条的最大值 int max = mediaPlayer.getDuration(); seekBar1.setMax(max); timer = new Timer(); task = new TimerTask() { @Override public void run() { seekBar1.setProgress(mediaPlayer.getCurrentPosition()); } }; timer.schedule(task, 0, 500); bt_play.setEnabled(false); ////*********完成监听器************************************ mediaPlayer.setOnCompletionListener(new OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { bt_play.setEnabled(true); } }); } catch (Exception e) { e.printStackTrace(); Toast.makeText(this, "播放失败", 0).show(); } }else{ Toast.makeText(this, "文件不存在,请检查文件的路径", 0).show(); } } /** * 暂停 * @param view */ public void pause(View view) { if("继续".equals(bt_pause.getText().toString())){ mediaPlayer.start(); bt_pause.setText("暂停"); return; } if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ mediaPlayer.pause(); bt_pause.setText("继续"); } } /** * 停止 * @param view */ public void stop(View view) { if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ mediaPlayer.stop(); mediaPlayer.release(); mediaPlayer = null; } bt_pause.setText("暂停"); bt_play.setEnabled(true); } /** * 重播 * @param view */ public void replay(View view) { if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ mediaPlayer.seekTo(0); }else{ play(view); } bt_pause.setText("暂停"); } }
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity" > <EditText android:id="@+id/et_path" android:layout_width="fill_parent" android:layout_height="wrap_content" android:hint="请输入要播放文件的路径" /> <SeekBar android:id="@+id/seekBar1" android:layout_width="match_parent" android:layout_height="wrap_content" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:id="@+id/bt_play" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="play" android:text="播放" /> <Button android:id="@+id/bt_pause" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="pause" android:text="暂停" /> <Button android:id="@+id/bt_stop" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="stop" android:text="停止" /> <Button android:id="@+id/bt_replay" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="replay" android:text="重播" /> </LinearLayout> <SurfaceView android:id="@+id/sv" android:layout_width="fill_parent" android:layout_height="fill_parent" /> </LinearLayout>
在线:
package com.itheima.musicplayer; import java.io.File; import java.io.IOException; import android.app.Activity; import android.media.AudioManager; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceHolder.Callback; import android.view.SurfaceView; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class MainActivity extends Activity { private EditText et_path; private MediaPlayer mediaPlayer; private Button bt_play,bt_pause,bt_stop,bt_replay; private SurfaceView sv; private SurfaceHolder holder; private int position; private String filepath; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); et_path = (EditText) findViewById(R.id.et_path); bt_play = (Button) findViewById(R.id.bt_play); bt_pause = (Button) findViewById(R.id.bt_pause); bt_stop = (Button) findViewById(R.id.bt_stop); bt_replay = (Button) findViewById(R.id.bt_replay); //得到surfaceview sv = (SurfaceView) findViewById(R.id.sv); //得到显示界面内容的容器 holder = sv.getHolder(); //在低版本模拟器上运行记得加上下面的参数。不自己维护双缓冲区,而是等待多媒体播放框架主动的推送数据。 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); holder.addCallback(new Callback() { @Override public void surfaceDestroyed(SurfaceHolder holder) { System.out.println("destoryed"); if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ position = mediaPlayer.getCurrentPosition(); mediaPlayer.stop(); mediaPlayer.release(); mediaPlayer = null; } } @Override public void surfaceCreated(SurfaceHolder holder) { System.out.println("created"); if(position>0){//记录的有播放进度。 try { mediaPlayer = new MediaPlayer(); mediaPlayer.setDataSource(filepath);//设置播放的数据源。 mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setDisplay(holder); mediaPlayer.prepare();//准备开始播放 播放的逻辑是c代码在新的线程里面执行。 mediaPlayer.start(); mediaPlayer.seekTo(position); bt_play.setEnabled(false); mediaPlayer.setOnCompletionListener(new OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { bt_play.setEnabled(true); } }); } catch (IOException e) { e.printStackTrace(); } } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { System.out.println("changed"); } }); } /** * 播放 * @param view */ public void play(View view) { filepath = et_path.getText().toString().trim(); //File file = new File(filepath); if(filepath.startsWith("http://")){ try { mediaPlayer = new MediaPlayer(); mediaPlayer.setDataSource(filepath);//设置播放的数据源。 mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setDisplay(holder); mediaPlayer.prepare();//准备开始播放 播放的逻辑是c代码在新的线程里面执行。 mediaPlayer.start(); bt_play.setEnabled(false); mediaPlayer.setOnCompletionListener(new OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { bt_play.setEnabled(true); } }); } catch (Exception e) { e.printStackTrace(); Toast.makeText(this, "播放失败", 0).show(); } }else{ Toast.makeText(this, "文件不存在,请检查文件的路径", 0).show(); } } /** * 暂停 * @param view */ public void pause(View view) { if("继续".equals(bt_pause.getText().toString())){ mediaPlayer.start(); bt_pause.setText("暂停"); return; } if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ mediaPlayer.pause(); bt_pause.setText("继续"); } } /** * 停止 * @param view */ public void stop(View view) { if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ mediaPlayer.stop(); mediaPlayer.release(); mediaPlayer = null; } bt_pause.setText("暂停"); bt_play.setEnabled(true); } /** * 重播 * @param view */ public void replay(View view) { if(mediaPlayer!=null&&mediaPlayer.isPlaying()){ mediaPlayer.seekTo(0); }else{ play(view); } bt_pause.setText("暂停"); } }
xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity" > <EditText android:id="@+id/et_path" android:layout_width="fill_parent" android:layout_height="wrap_content" android:hint="请输入要播放文件的路径" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:id="@+id/bt_play" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="play" android:text="播放" /> <Button android:id="@+id/bt_pause" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="pause" android:text="暂停" /> <Button android:id="@+id/bt_stop" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="stop" android:text="停止" /> <Button android:id="@+id/bt_replay" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:onClick="replay" android:text="重播" /> </LinearLayout> <SurfaceView android:id="@+id/sv" android:layout_width="fill_parent" android:layout_height="fill_parent" /> </LinearLayout>
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