Resources$NotFoundException: Resource ID #0x0. What could be wrong in the code?

Question

Android

public void startMicro(View view) {
        if (whatButton == 10) {
            isSpeechOn = false;
            whatButton = 0;
            MainButton.setImageResource(R.drawable.mainmicro);
            isrunning = false;
            recognizer.finishRecording();
        } else {
            if (whatButton == 1) {
                seconds = 0;
                seconds = 0;
                myseconds = 0;
                if (view.getId() == R.id.mainbtn) {
                    TextView result = (TextView) findViewById(R.id.resultText);
                    MainButton.setImageResource(R.drawable.stop);
                    startRec();
                }
            }
        }
    }

@TargetApi(Build.VERSION_CODES.M)
    public void startRec() {
        final Context context = getApplicationContext();
        if (context == null) {
            return;
        }
        if (ContextCompat.checkSelfPermission(context, RECORD_AUDIO) != PERMISSION_GRANTED) {
            requestPermissions(new String[]{RECORD_AUDIO}, 1);
        } else {
            resetRecognizer();
            recognizer = Recognizer.create(Recognizer.Language.RUSSIAN, Recognizer.Model.NOTES, reclistener, true);
            recognizer.start();
        }
    }

In the error, these lines point to my code:

at com.govorillo.youtube.govorilka.MainActivity.startRec(MainActivity.java:218)
at com.govorillo.youtube.govorilka.MainActivity.startMicro(MainActivity.java:195)

What could be the problem?

Answer 1

IDE in editor not highlighting error? Try rebuild project

Answer 2

In fact, when building an application, R.class is generated. I had such a problem, first of all I recommend checking whether you have all the sizes of the required images (mdpi-drawable, hdpi-drawable, xhdpi-drawable, etc.), and how suggested by coden55 to do a Project Rebuild. R.class will be regenerated and the error should be gone. Before rolling out to production, I recommend doing a rebuild every time.

Answer 3

Faced such an error with typos like textView.setText(0). Or textView.setText(x), and xcould be equal to 0. Perhaps you have something like this in your code