Creating subdirectories within a directory and be able to save data into it

Question

I'm new to android developing, and I'm in need of help. I've got two problems which are:

1. I don't know how to create two subdirectories inside my main directory. I know how to create subdirectory inside of a directory (File directory = new File(Environment.getExternalStorageDirectory()+"Saling-Wika/Audio&Text Files");), but what I do want is there would be two subdirectories inside of my main subdirectory (The Audio Files & Text Files are different two subdirectories inside the Saling-Wika directory which is the main directory).

2. I don't know how I'm gonna be able to save my data into the subdirectories I've created. Here is the code of my record module where the audio data is coming from:

   public class RecordModule extends Activity {
   
   Button SpeakBtn, StopBtn;
   private MediaRecorder myAudioRecorder;
   private String outputFile = null;
   
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.recordmodule);
   
       SpeakBtn = (Button) findViewById(R.id.SpeakBtn);
       StopBtn = (Button) findViewById(R.id.StopBtn);
   
       StopBtn.setEnabled(false);
       SpeakBtn.setEnabled(true);
       SimpleDateFormat datetime = new SimpleDateFormat("ddMMyyyyhhmmss");
       String format = datetime.format(new Date());
       outputFile = Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + format + ".3gp";
   
       myAudioRecorder = new MediaRecorder();
       myAudioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
       myAudioRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
       myAudioRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
       myAudioRecorder.setOutputFile(outputFile);
   
       SpeakBtn.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               try {
                   myAudioRecorder.prepare();
                   myAudioRecorder.start();
               }
   
               catch (IllegalStateException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
               }
   
               catch (IOException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
               }
   
               SpeakBtn.setEnabled(false);
               StopBtn.setEnabled(true);
   
               Toast.makeText(getApplicationContext(), "Recording started", Toast.LENGTH_SHORT).show();
           }
       });
   
       StopBtn.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               myAudioRecorder.stop();
               myAudioRecorder.release();
               myAudioRecorder = null;
   
               StopBtn.setEnabled(false);
               SpeakBtn.setEnabled(true);
   
               Toast.makeText(getApplicationContext(), "Audio recorded successfully", Toast.LENGTH_SHORT).show();
           }
       });
   }
   

I want my audio data will be stored into the Audio Files directory, but I don't know how I'm gonna be able to do that. Please help me.

Answer 1

I've finally solved my problems, and here are the solutions I've done:

String folder_main = "Saling-Wika"

File MainDir = new File (Environment.getExternalStorage();, folder_main);
if (!MainDir.exists()){
   MainDir.mkdirs();
}

File f1 = new File (Environment.getExternalStorage() + "/" + folder_main, "Audio Files");
if (!MainDir.exists()){
   MainDir.mkdirs();
}

File f2 = new File (Environment.getExternalStorage() + "/" + folder_main, "Text Files");
if (!MainDir.exists()){
   MainDir.mkdirs();
}
}

Here is the code how I've created two subdirectories (Audio & Text Files folders) inside of the main directory (Saling-Wika fodler).

outputFile = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Saling-Wika/Audio Files/" + format + ".3gp";

And here is how my audio files are being saved into the Audio Files folder.