Android Media Recorder录音播放源代码

package irdc.ex07_11;import java.io.File;import java.io.IOException;import java.util.ArrayList;import android.app.Activity;import android.content.Intent;import android.media.MediaRecorder;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.CheckedTextView;import android.widget.ImageButton;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class EX07_11 extends Activity{  private ImageButton myButton1;  private ImageButton myButton2;  private ImageButton myButton3;  private ImageButton myButton4;  private ListView myListView1;  private String strTempFile = "ex07_11_";  private File myRecAudioFile;  private File myRecAudioDir;// 得到Sd卡path  private File myPlayFile;  private MediaRecorder mMediaRecorder01;  private ArrayList<String> recordFiles;  private ArrayAdapter<String> adapter;// 用于ListView的适配器  private TextView myTextView1;  private boolean sdCardExit;  private boolean isStopRecord;  /** Called when the activity is first created. */  @Override  public void onCreate(Bundle savedInstanceState)  {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    //主要是4个控制按钮(录制,停止,播放,删除)    myButton1 = (ImageButton) findViewById(R.id.ImageButton01);    myButton2 = (ImageButton) findViewById(R.id.ImageButton02);    myButton3 = (ImageButton) findViewById(R.id.ImageButton03);    myButton4 = (ImageButton) findViewById(R.id.ImageButton04);    //列表出指定文件夹中所有amr格式音频文件    myListView1 = (ListView) findViewById(R.id.ListView01);    myTextView1 = (TextView) findViewById(R.id.TextView01);    myButton2.setEnabled(false);    myButton3.setEnabled(false);    myButton4.setEnabled(false);

    /* 判断SD Card是否插入 */    sdCardExit = Environment.getExternalStorageState().equals(        android.os.Environment.MEDIA_MOUNTED);    /* 取得SD Card路径作为录音的文件位置 */    if (sdCardExit)    {      myRecAudioDir = Environment.getExternalStorageDirectory();    }    /* 取得SD Card目录里的所有.amr文件 */    getRecordFiles();    adapter = new ArrayAdapter<String>(this,        R.layout.my_simple_list_item, recordFiles);    /* 将ArrayAdapter添加ListView对象中 */    myListView1.setAdapter(adapter);    /* 录音 */    myButton1.setOnClickListener(new ImageButton.OnClickListener()    {      @Override      public void onClick(View arg0)      {        try        {          if (!sdCardExit)          {            Toast.makeText(EX07_11.this, "请插入SD Card",                Toast.LENGTH_LONG).show();            return;          }          // 创建录音频文件          //这种创建方式生成的文件名是随机的,所以我本人不是很习惯//          myRecAudioFile = File.createTempFile(strTempFile, ".amr",//              myRecAudioDir);           File sdcardDir = Environment.getExternalStorageDirectory();           String path = sdcardDir.getParent() + sdcardDir.getName();           String filePath = path + java.io.File.separator + "Demo";          //创建文件，使用自己指定文件名(这里我手动创建好了,我们也可以利用mkdirs的方法来创建)           myRecAudioFile = new File(filePath,"new.amr");          mMediaRecorder01 = new MediaRecorder();          /* 设置录音来源为麦克风 */          mMediaRecorder01              .setAudioSource(MediaRecorder.AudioSource.MIC);          mMediaRecorder01              .setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);          mMediaRecorder01              .setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);          //文件保存位置          mMediaRecorder01.setOutputFile(myRecAudioFile              .getAbsolutePath());          mMediaRecorder01.prepare();          mMediaRecorder01.start();          myTextView1.setText("录音中");          myButton2.setEnabled(true);          myButton3.setEnabled(false);          myButton4.setEnabled(false);          isStopRecord = false;        } catch (IOException e)        {          // TODO Auto-generated catch block          e.printStackTrace();        }      }    });    /* 停止 */    myButton2.setOnClickListener(new ImageButton.OnClickListener()    {      @Override      public void onClick(View arg0)      {        // TODO Auto-generated method stub        if (myRecAudioFile != null)        {          /* 停止录音 */          mMediaRecorder01.stop();          mMediaRecorder01.release();          mMediaRecorder01 = null;          /* 将录音频文件名给Adapter */          adapter.add(myRecAudioFile.getName());          myTextView1.setText("停止：" + myRecAudioFile.getName());          myButton2.setEnabled(false);          isStopRecord = true;        }      }    });    /* 播放 */    myButton3.setOnClickListener(new ImageButton.OnClickListener()    {      @Override      public void onClick(View arg0)      {        // TODO Auto-generated method stub        //if (myPlayFile != null && myPlayFile.exists())        //{          /* 打开播放的程序 */         // openFile(myPlayFile);          System.out.println("_________________"+myRecAudioFile.getAbsolutePath());            //这里我们也可以加个判断:            //if(是否存在音频文件) myRecAudioFile.exists()          openFile(myRecAudioFile);                  //}      }    });    /* 删除 */    myButton4.setOnClickListener(new ImageButton.OnClickListener()    {      @Override      public void onClick(View arg0)      {        // TODO Auto-generated method stub        if (myPlayFile != null)        {          /* 先将Adapter删除文件名 */          adapter.remove(myPlayFile.getName());          /* 删除文件 */          if (myPlayFile.exists())            myPlayFile.delete();          myTextView1.setText("完成删除");        }      }    });    myListView1        .setOnItemClickListener(new AdapterView.OnItemClickListener()        {          @Override          public void onItemClick(AdapterView<?> arg0, View arg1,              int arg2, long arg3)          {            /* 当有点击档名时将删除及播放按钮Enable */            myButton3.setEnabled(true);            myButton4.setEnabled(true);            System.out.println("_______________"                + myRecAudioDir.getAbsolutePath());//            myPlayFile = new File(myRecAudioDir.getAbsolutePath()//                + File.separator//                + ((CheckedTextView) arg1).getText());            myTextView1.setText("你选的是："                + ((CheckedTextView) arg1).getText());          }        });  }  @Override  protected void onStop()  {    if (mMediaRecorder01 != null && !isStopRecord)    {      /* 停止录音 */      mMediaRecorder01.stop();      mMediaRecorder01.release();      mMediaRecorder01 = null;    }    super.onStop();  }  // 存储一个音频文件数组到list当中  private void getRecordFiles()  {    recordFiles = new ArrayList<String>();    if (sdCardExit)    {      File files[] = myRecAudioDir.listFiles();      if (files != null)      {        for (int i = 0; i < files.length; i++)        {          if (files[i].getName().indexOf(".") >= 0)          {            /* 只取.amr文件 */            String fileS = files[i].getName().substring(                files[i].getName().indexOf("."));            if (fileS.toLowerCase().equals(".amr"))              recordFiles.add(files[i].getName());          }        }      }    }  }  /* 打开播放录音文件的程序 */  private void openFile(File f)  {    Intent intent = new Intent();    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);    intent.setAction(android.content.Intent.ACTION_VIEW);    String type = getMIMEType(f);    intent.setDataAndType(Uri.fromFile(f), type);    startActivity(intent);  }  private String getMIMEType(File f)  {    String end = f        .getName()        .substring(f.getName().lastIndexOf(".") + 1,            f.getName().length()).toLowerCase();    String type = "";    if (end.equals("mp3") || end.equals("aac") || end.equals("aac")        || end.equals("amr") || end.equals("mpeg")        || end.equals("mp4"))    {      type = "audio";    } else if (end.equals("jpg") || end.equals("gif")        || end.equals("png") || end.equals("jpeg"))    {      type = "image";    } else    {      type = "*";    }    type += "/*";    return type;  }}

布局文件main.xml

View Code

 1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     android:orientation="vertical" android:layout_width="fill_parent" 4     android:layout_height="fill_parent" android:background="@drawable/white"> 5     <LinearLayout android:id="@+id/LinearLayout01" 6         android:layout_width="wrap_content" android:layout_height="wrap_content"> 7         <ImageButton android:id="@+id/ImageButton01" 8             android:layout_width="wrap_content" android:layout_height="wrap_content" 9             android:src="@drawable/record">10         </ImageButton>11         <ImageButton android:id="@+id/ImageButton02"12             android:layout_width="wrap_content" android:layout_height="wrap_content"13             android:src="@drawable/stop">14         </ImageButton>15         <ImageButton android:id="@+id/ImageButton03"16             android:layout_width="wrap_content" android:layout_height="wrap_content"17             android:src="@drawable/play">18         </ImageButton>19         <ImageButton android:id="@+id/ImageButton04"20             android:layout_width="wrap_content" android:layout_height="wrap_content"21             android:src="@drawable/delete">22         </ImageButton>23     </LinearLayout>24     <TextView android:id="@+id/TextView01" android:layout_width="wrap_content"25         android:layout_height="wrap_content" android:textColor="@drawable/black">26     </TextView>27     <ListView android:id="@+id/ListView01" android:layout_width="wrap_content"28         android:layout_height="wrap_content" android:background="@drawable/black">29     </ListView>30 </LinearLayout>

my_simple_list_item.xml文件

View Code

1 <?xml version="1.0" encoding="utf-8"?>2 <CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"3     android:id="@+id/myCheckedTextView1" android:layout_width="fill_parent"4     android:layout_height="fill_parent" android:textColor="@drawable/white" />

权限设置

<uses-permission android:name="android.permission.RECORD_AUDIO" />

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