写一个安卓实现录音与播放功能的程序，但是apk运行时一按录音键就闪退，求大神帮忙看看代码，感谢
源文件：
package com.example.recorder;
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
private static final String LOG_TAG = "AudioRecordTest";
// 语音文件保存路径
private String FileName = null;
// 界面控件
private Button startRecord;
private Button startPlay;
private Button stopRecord;
private Button stopPlay;
// 语音操作对象
private MediaPlayer mPlayer = null;
private MediaRecorder mRecorder = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//开始录音
startRecord = (Button) findViewById(R.id.startrecord);
// 绑定监听器
startRecord.setOnClickListener(new startRecordListener());
// 结束录音
stopRecord = (Button) findViewById(R.id.stoprecord);
stopRecord.setOnClickListener(new stopRecordListener());
// 开始播放
startPlay = (Button) findViewById(R.id.play);
// 绑定监听器
startPlay.setOnClickListener(new startPlayListener());
// 结束播放
stopPlay = (Button) findViewById(R.id.stop);
stopPlay.setOnClickListener(new stopPlayListener());
FileName = Environment.getExternalStorageDirectory().getAbsolutePath();
FileName = FileName + File.separator + "audiorecordtest.arm";
}
// 开始录音
class startRecordListener implements OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mRecorder = new MediaRecorder();
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
mRecorder.setOutputFile(FileName);
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
try {
mRecorder.prepare();
} catch (IOException e) {
Log.e(LOG_TAG, "prepare() failed");
}
mRecorder.start();
}
}
// 停止录音
class stopRecordListener implements OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mRecorder.stop();
mRecorder.release();
mRecorder = null;
}
}
// 播放录音
class startPlayListener implements OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mPlayer = new MediaPlayer();
try {
mPlayer.setDataSource(FileName);
mPlayer.prepare();
mPlayer.start();
} catch (IOException e) {
Log.e(LOG_TAG, "播放失败");
}
}
}
// 停止播放录音
class stopPlayListener implements OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mPlayer.release();
mPlayer = null;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
R文件
/* AUTO-GENERATED FILE. DO NOT MODIFY.
*
- This class was automatically generated by the
- aapt tool from the resource data it found. It
- should not be modified by hand. */
package com.example.recorder;
public final class R {
public static final class attr {
}
public static final class dimen {
/** Default screen margins, per the Android Design guidelines.
Example customization of dimensions originally defined in res/values/dimens.xml
(such as screen margins) for screens with more than 820dp of available width. This
would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively).
*/
public static final int activity_horizontal_margin=0x7f040000;
public static final int activity_vertical_margin=0x7f040001;
}
public static final class drawable {
public static final int ic_launcher=0x7f020000;
}
public static final class id {
public static final int action_settings=0x7f080005;
public static final int play=0x7f080002;
public static final int select=0x7f080004;
public static final int startrecord=0x7f080000;
public static final int stop=0x7f080003;
public static final int stoprecord=0x7f080001;
}
public static final class layout {
public static final int activity_main=0x7f030000;
}
public static final class menu {
public static final int main=0x7f070000;
}
public static final class string {
public static final int action_settings=0x7f050002;
public static final int app_name=0x7f050000;
public static final int hello_world=0x7f050001;
}
public static final class style {
/**
Base application theme, dependent on API level. This theme is replaced
by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
Theme customizations available in newer API levels can go in
res/values-vXX/styles.xml, while customizations related to
backward-compatibility can go here.
Base application theme for API 11+. This theme completely replaces
AppBaseTheme from res/values/styles.xml on API 11+ devices.
API 11 theme customizations can go here.
Base application theme for API 14+. This theme completely replaces
AppBaseTheme from BOTH res/values/styles.xml and
res/values-v11/styles.xml on API 14+ devices.
API 14 theme customizations can go here.
/
public static final int AppBaseTheme=0x7f060000;
/* Application theme.
All customizations that are NOT specific to a particular API-level can go here.
*/
public static final int AppTheme=0x7f060001;
}
}
