path to your audio file

[parsonsyang]

/**
* Provide path to your audio file.
*
* @return
*/
@OverRide
protected String getFileName() {
return "path to your audio file";
}

What is the need to fill in the audio file path here? Please give an example? I filled in /storage/emulated/0/Download/test.wav and still can't find the file (provided this path has this file)

[parsonsyang]

need add permission in AndroidManifest.xml
【uses-permission android:name="android.permission.READ_CONTACTS" /】
【uses-permission android:name="android.permission.WRITE_CONTACTS" /】
【uses-permission android:name="android.permission.WRITE_SETTINGS" /】
【uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /】
【uses-permission android:name="android.permission.RECORD_AUDIO"/>】

@OverRide
protected String getFileName() {
return "/storage/emulated/0/Download/test.wav";
}

[VivekThummar52]

Did you asked for permissions in any activity?
if not than use given code in mainActivity -

private final int SettingCode = 111;
private final int RequestPermission = 1;

call this method in onCreate() method

hasPermission(); 

and create this method:

private void hasPermission() {
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
        final String[] s = new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};
        if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED ||
                ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {

            PermissionsDialog(s);      // call this method if permission is not granted
        } else {
            setData();        // code for next task if permission is granted
        }
    } else {
        setData();           //  if device is below version marshmello
    }
}

than paste this code

private void PermissionsDialog(final String[] s) {
    ActivityCompat.requestPermissions(MainActivity.this, s, RequestPermission);
}

Now call this method which is called when any permission is granted or denied

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (requestCode == RequestPermission) {
        if (grantResults.length > 0) {
            for (int grantResult : grantResults) {
                if (grantResult != PackageManager.PERMISSION_GRANTED) {
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
                            !ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, permissions[0])) {
                        startActivityForResult(new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
                                Uri.parse("package:" + BuildConfig.APPLICATION_ID)), SettingCode);
                    } else {
                        hasPermission();
                    }
                } else {
                    setData();
                }
            }
        }
    }
}

and also use this method

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == SettingCode) {
        hasPermission();
    }
}

If this also not worked than try to show error log which specifies the error.