import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class MainActivity extends Activity {
private Button btn;
private ListView lv;
private SimpleAdapter adapter;
private MediaRecorder recorder;
private static final String RECORD_DIR = “temp_record”;
// 获得存储在外部的路径
private File dir = new File(Environment.getExternalStorageDirectory(),
RECORD_DIR);
private List<Map<String, String>> records = new ArrayList<Map<String, String>>();
private String currnetPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn = (Button) findViewById(R.id.recordBtn);
lv = (ListView) findViewById(R.id.recordList);
checkDir();
adapter = new SimpleAdapter(this, records, R.layout.list_cell,
new String[] { “name” }, new int[] { R.id.cell_tv });
refreshAdapter();
lv.setAdapter(adapter);
lv.setOnItemClickListener(new OnItemClickListener() {
@SuppressWarnings(“unchecked”)
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int position, long arg3) {
Map<String, String> map = (Map<String, String>) adapter
.getItem(position);
System.out.println(map);
final MediaPlayer mp = MediaPlayer.create(MainActivity.this,
Uri.fromFile(new File(map.get(“path”))));
if(mp==null){
return;
}
mp.start();
mp.setOnCompletionListener(new OnCompletionListener() {
@Override
public void onCompletion(MediaPl
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ayer arg0) {
mp.release();
}
});
}
});
btn.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
recorder = new MediaRecorder();
// 这边这几个方法调用的顺序不能错
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
// 获得当前存放文件的地址
currnetPath = getPath();
recorder.setOutputFile(currnetPath);
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
recorder.start();
break;
case MotionEvent.ACTION_UP:
if (recorder != null) {
try {
recorder.stop();
refreshAdapter();
} catch (RuntimeException stopException) {
// 这个异常出现在录制之后马上停止了
stopException.printStackTrace();
File file = new File(currnetPath);
if (file.exists()) {
// 抛出异常的话就删掉错误的文件
file.delete();
}
}finally{
recorder.release();
recorder = null;
}