I'm making an app that records audio as long as the imagebutton is touched and held. I achieved this with the following code:
public class MainActivity extends Activity {
MediaRecorder recorder;
MediaPlayer mediaPlayer;
//STORAGE PATHS
String storagePath;
String externalStoragePath;
//FULL OUTPUT PATHS
String externalOutputPath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//AUDIO RECORDER
recorder = new MediaRecorder();
recorder.reset();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{
externalStoragePath = Environment.getExternalStorageDirectory().getAbsolutePath();
externalOutputPath = externalStoragePath + File.separator + "/Android/data/com.whizzappseasyvoicenotepad/test.mp3";
recorder.setOutputFile(externalOutputPath);
}
else
{
storagePath = Environment.getDataDirectory().getAbsolutePath();
recorder.setOutputFile(storagePath + "/Android/data/com.whizzappseasyvoicenotepad/test.mp3");
}
//IMAGE BUTTON ONTOUCHLISTENER
final ImageButton recBtn = (ImageButton) findViewById(R.id.recButton);
recBtn.setOnTouchListener(new OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN)
{
recBtn.setImageResource(R.drawable.record_btn_pressed);
try {
recorder.prepare();
recorder.start();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else if (event.getAction() == MotionEvent.ACTION_UP)
{
recBtn.setImageResource(R.drawable.record_btn);
try {
recorder.prepare();
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i(STORAGE_SERVICE, "File saved to: " + externalStoragePath + "/Android/data/com.whizzappseasyvoicenotepad/test.3gp");
}
return true;
}
});
} //END OF ONCREATE
Now after I've stopped recording, I searched for the mp3 file in file manager (android app) and tried playing it music player but it doesn't work. It says that the file can't be played.
I then also tried to add a "test play" button to the app, to try and play the recorded file with MediaPlayer but it doesn't work either. As soon as I press the play button, the app crashes.
public void testPlay (View v) throws IllegalArgumentException, SecurityException, IllegalStateException, IOException{
mediaPlayer = new MediaPlayer();
mediaPlayer.setDataSource(externalOutputPath);
mediaPlayer.start();
}
Yes, I did add android:onClick="testPlay" to the xml file
Logcat file:
07-31 16:51:43.938: E/MediaPlayer(26918): Unable to to create media player
07-31 16:51:43.953: E/AndroidRuntime(26918): FATAL EXCEPTION: main
07-31 16:51:43.953: E/AndroidRuntime(26918): java.lang.IllegalStateException: Could not execute method of the activity
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.view.View$1.onClick(View.java:3633)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.view.View.performClick(View.java:4240)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.view.View$PerformClick.run(View.java:17721)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.os.Handler.handleCallback(Handler.java:730)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.os.Handler.dispatchMessage(Handler.java:92)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.os.Looper.loop(Looper.java:137)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.app.ActivityThread.main(ActivityThread.java:5103)
07-31 16:51:43.953: E/AndroidRuntime(26918): at java.lang.reflect.Method.invokeNative(Native Method)
07-31 16:51:43.953: E/AndroidRuntime(26918): at java.lang.reflect.Method.invoke(Method.java:525)
07-31 16:51:43.953: E/AndroidRuntime(26918): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
07-31 16:51:43.953: E/AndroidRuntime(26918): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-31 16:51:43.953: E/AndroidRuntime(26918): at dalvik.system.NativeStart.main(Native Method)
07-31 16:51:43.953: E/AndroidRuntime(26918): Caused by: java.lang.reflect.InvocationTargetException
07-31 16:51:43.953: E/AndroidRuntime(26918): at java.lang.reflect.Method.invokeNative(Native Method)
07-31 16:51:43.953: E/AndroidRuntime(26918): at java.lang.reflect.Method.invoke(Method.java:525)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.view.View$1.onClick(View.java:3628)
07-31 16:51:43.953: E/AndroidRuntime(26918): ... 11 more
07-31 16:51:43.953: E/AndroidRuntime(26918): Caused by: java.io.IOException: setDataSourceFD failed.: status=0x80000000
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.media.MediaPlayer.setDataSource(Native Method)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:981)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:960)
07-31 16:51:43.953: E/AndroidRuntime(26918): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:918)
07-31 16:51:43.953: E/AndroidRuntime(26918): at com.whizzappseasyvoicenotepad.MainActivity.testPlay(MainActivity.java:99)
07-31 16:51:43.953: E/AndroidRuntime(26918): ... 14 more
Permissions:
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
I'm still not sure what was the problem, but I think there was something wrong with the way I stopped recording (the whole try, catch thing). I just rewrote the whole code and put the MediaRecorder in two different methods. startRecording() and stopRecording() method. And now it works perfectly!
startRecording()
public void startRecording (){
recorder = new MediaRecorder();
recorder.reset();
recorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{
externalStoragePath = Environment.getExternalStorageDirectory().getAbsolutePath();
externalOutputPath = externalStoragePath + File.separator + "/Android/data/com.whizzappseasyvoicenotepad/test.mp3";
recorder.setOutputFile(externalOutputPath);
}
else
{
storagePath = Environment.getDataDirectory().getAbsolutePath();
recorder.setOutputFile(storagePath + "/Android/data/com.whizzappseasyvoicenotepad/test.mp3");
}
recorder.setOnErrorListener(errorListener);
recorder.setOnInfoListener(infoListener);
try {
recorder.prepare();
recorder.start();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
stopRecording()
public void stopRecording() {
if (null != recorder) {
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
}
}