package edu.lytu.Task5_Recorder;
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Task5_Recorder extends Activity {
/** Called when the activity is first created. */
//0--未录音1--录音中。。。2--录音完毕3--正在播放4--停止播放
private int state=0;
private TextView tvPromotion;
private Button btnRecord,btnPlay;
File homeDir,recordFile;
private MediaRecorder recorder;
private MediaPlayer player;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tvPromotion=(TextView) findViewById(R.id.tvPromotion);
btnRecord=(Button) findViewById(R.id.btnRecord);
btnPlay=(Button) findViewById(R.id.btnPlay);
btnRecord.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (state==1) {
state=2;
tvPromotion.setText("录音完毕");
btnRecord.setText("开始录音");
stoprecord();
}else
{
state=1;
tvPromotion.setText("录音中。。。");
btnRecord.setText("停止");
record();
}
}
});
btnPlay.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (state==3) {
state=4;
tvPromotion.setText("停止播放");
btnPlay.setText("开始播放");
stoprecorder();
}else
{
state=3;
tvPromotion.setText("播放中。。。");
btnPlay.setText("停止播放");
playrecorder();
}
}
});
}
private void stoprecorder() {
// TODO Auto-generated method stub
player.stop();
}
private void stoprecord() {
// TODO Auto-generated method stub
recorder.stop();
}
private void record() {
// TODO Auto-generated method stub
try {
homeDir = null;
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
homeDir = Environment.getExternalStorageDirectory();
}else{
Toast.makeText(this, "SD卡不存在", Toast.LENGTH_SHORT).show();
}
recordFile= File.createTempFile("rec_", ".amr", homeDir);
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(recordFile.getAbsolutePath());
recorder.prepare();
recorder.start();
} catch (Exception e) {
}
}
private void playrecorder() {
// TODO Auto-generated method stub
player=new MediaPlayer();
try {
player.setDataSource(recordFile.getAbsolutePath());
player.prepare();
player.setLooping(false);
player.setVolume(100, 50);
player.start();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Task5_Recorder.rar （21个子文件） 
Task5_Recorder bin 
classes.dex 6KB Task5_Recorder.apk 9KB resources.ap_ 5KB edu lytu Task5_Recorder R$layout.class 409B R$id.class 468B R$drawable.class 415B R$attr.class 355B R.class 566B Task5_Recorder$2.class 1KB Task5_Recorder.class 4KB Task5_Recorder$1.class 1KB R$string.class 442B res drawable 
icon.png 3KB values strings.xml 168B layout main.xml 812B assets default.properties 380B gen edu lytu Task5_Recorder R.java 853B src edu lytu Task5_Recorder Task5_Recorder.java 3KB .project 850B .classpath 280B AndroidManifest.xml 873B资源评论
