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

问题

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

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).

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.

回答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.

来源：https://stackoverflow.com/questions/35381733/creating-subdirectories-within-a-directory-and-be-able-to-save-data-into-it

标签

android

audio