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I have a recorder I'm trying to make to test it out and see how it works. However when I run it I get the error:

E/MediaRecorder: start called in an invalid state: 4

So I did some googlejitzu and figured out that my file path is wrong. This is my code:

final MediaRecorder recorder = new MediaRecorder();
 recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
 recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
 recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
 recorder.setOutputFile("Test");

 System.out.println("Hello");
 try 
 recorder.prepare();
 catch (IOException e) 
 e.printStackTrace();

 
 recorder.start();
 CountDownTimer countDownTimer = new CountDownTimer(30000, 1000) 
 @Override
 public void onTick(long l) 

 

 @Override
 public void onFinish() 
 recorder.stop();
 
 .start();

So I guess I was wondering how to make a file path directory on the phone for the audio to be saved to.

The Error is:

 11-11 01:49:48.275 23703-23703/com.example.arege.dayatalisten W/System.err: java.io.FileNotFoundException: Test: open failed: EROFS (Read-only file system)
11-11 01:49:48.276 23703-23703/com.example.arege.dayatalisten W/System.err: at libcore.io.IoBridge.open(IoBridge.java:455)
 at java.io.RandomAccessFile.<init>(RandomAccessFile.java:247)
 at java.io.RandomAccessFile.<init>(RandomAccessFile.java:128)
 at android.media.MediaRecorder.prepare(MediaRecorder.java:834)
 at com.example.arege.dayatalisten.ListeningToTheWorld.onStartCommand(ListeningToTheWorld.java:47)
 at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3432)
 at android.app.ActivityThread.-wrap21(ActivityThread.java)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1633)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loop(Looper.java:154)
 at android.app.ActivityThread.main(ActivityThread.java:6316)
 at java.lang.reflect.Method.invoke(Native Method)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:872)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)
 Caused by: android.system.ErrnoException: open failed: EROFS (Read-only file system)
11-11 01:49:48.277 23703-23703/com.example.arege.dayatalisten W/System.err: at libcore.io.Posix.open(Native Method)
 at libcore.io.BlockGuardOs.open(BlockGuardOs.java:187)
 at libcore.io.IoBridge.open(IoBridge.java:441)
 ... 13 more

I have both required permissions.

You are trying to write to a internal storage to which your app does not have access. It's not a rooted device.

You need to write your file to the External storage.

Use either: getFilesDir() or getExternalFilesDir() (on Context or Activity) to get the directory and write the file to that location.

Psuedocode:

File file = new File(context.getFilesDir(), "Test");
FileOutputStream outputStream = new FileOutputStream(file);
outputStream.write("contents".getBytes());
outputStream.close();