/***
Copyright (c) 2012 CommonsWare, LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License.
Covered in detail in the book _The Busy Coder's Guide to Android Development_
https://commonsware.com/Android
*/
package com.commonsware.android.audiorecord;
import android.media.MediaRecorder;
import android.media.MediaRecorder.OnErrorListener;
import android.media.MediaRecorder.OnInfoListener;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;
import android.widget.ToggleButton;
import java.io.File;
import static android.Manifest.permission.RECORD_AUDIO;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
public class MainActivity extends AbstractPermissionActivity implements
OnCheckedChangeListener, OnErrorListener, OnInfoListener {
private static final String BASENAME="recording.3gp";
private MediaRecorder recorder=null;
@Override
protected String[] getDesiredPermissions() {
return(new String[]{RECORD_AUDIO, WRITE_EXTERNAL_STORAGE});
}
@Override
protected void onPermissionDenied() {
Toast
.makeText(this, R.string.msg_sorry, Toast.LENGTH_LONG)
.show();
finish();
}
@Override
public void onReady(Bundle savedInstanceState) {
setContentView(R.layout.activity_main);
((ToggleButton)findViewById(R.id.record)).setOnCheckedChangeListener(this);
}
@Override
public void onStart() {
super.onStart();
recorder=new MediaRecorder();
recorder.setOnErrorListener(this);
recorder.setOnInfoListener(this);
}
@Override
public void onStop() {
recorder.release();
recorder=null;
super.onStop();
}
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
File output=
new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS),
BASENAME);
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setOutputFile(output.getAbsolutePath());
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD_MR1) {
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
recorder.setAudioEncodingBitRate(160 * 1024);
}
else {
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
}
recorder.setAudioChannels(2);
try {
recorder.prepare();
recorder.start();
}
catch (Exception e) {
Log.e(getClass().getSimpleName(),
"Exception in preparing recorder", e);
Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
}
}
else {
try {
recorder.stop();
}
catch (Exception e) {
Log.w(getClass().getSimpleName(),
"Exception in stopping recorder", e);
// can fail if start() failed for some reason
}
recorder.reset();
}
}
@Override
public void onInfo(MediaRecorder mr, int what, int extra) {
String msg=getString(R.string.strange);
switch (what) {
case MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED:
msg=getString(R.string.max_duration);
break;
case MediaRecorder.MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED:
msg=getString(R.string.max_size);
break;
}
Toast.makeText(this, msg, Toast.LENGTH_LONG).show();
}
@Override
public void onError(MediaRecorder mr, int what, int extra) {
Toast.makeText(this, R.string.strange, Toast.LENGTH_LONG).show();
}
}