Error placing Imagebuttons with sounds inside Ragment

Question

I’m trying to put Imagebuttons playing sounds inside a Fragment called Tab1, but I’m finding two errors:

Non-static method 'findViewById(int)' cannot be referenced from a Static context

on the line

final ImageButton vitasbut = tab1.findViewById(R.id.vitasbut);

and

Cannot resolve method 'create(com.example.mateuspc1.memepocket.Mainactivity.Tab1, int)'

on the lines mediaPlayer = MediaPlayer.create(this, R.raw.gtaintro); (on all mediaPlayer.create).

Code:

public static class Tab1 extends Fragment {
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            return inflater.inflate(R.layout.tab1, container, false);



        }
        public Tab1() {
            final ImageButton vitasbut = tab1.findViewById(R.id.vitasbut);

            vitasbut.setOnClickListener(new ImageButton.OnClickListener() {
                @Override
                public void onClick(View v) {
                    vitasbut.setImageResource(R.drawable.vitas1);
                    play(vitasblblblahahah);
                    mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                        public void onCompletion(MediaPlayer mp) {
                            vitasbut.setImageResource(R.drawable.vitas1e2);
                        }
                    });
                }
            });}

        MediaPlayer mediaPlayer;
        private final String gtaintro = "gtaintro";
        private final String gtaagaraga = "gtaagaraga";
        private final String bolsdaqeut = "bolsdaqeut";
        private final String vitasblblblahahah = "vitasblblblahahah";
        private final String vitasuoah = "vitasuoah";
        private final String gabedogbark = "gabedogbark";
        private final String bolsetemqsef = "bolsetemqsef";
        private final String acertomizeravi = "acertomizeravi";
        private final String aiaichoque = "aiaichoque";
        private final String bnsetimaarte = "bnsetimaarte";
        private final String fausterou = "fausterou";
        private final String fausttapegfog = "fausttapegfog";

        private void play(String theText) {
            if (mediaPlayer != null) {
                mediaPlayer.reset();
                mediaPlayer.release();
                mediaPlayer = null;
            }
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                if (Objects.equals(theText, gtaintro))
                    mediaPlayer = MediaPlayer.create(this, R.raw.gtaintro);

                else if (Objects.equals(theText, gtaagaraga))
                    mediaPlayer = MediaPlayer.create(this, R.raw.gtaagaraga);

                else if (Objects.equals(theText, bolsdaqeut))
                    mediaPlayer = MediaPlayer.create(this, R.raw.bolsdaqeut);

                else if (Objects.equals(theText, vitasblblblahahah))
                    mediaPlayer = MediaPlayer.create(this, R.raw.vitasblblblahahah);

                else if (Objects.equals(theText, vitasuoah))
                    mediaPlayer = MediaPlayer.create(this, R.raw.vitasuoah);

                else if (Objects.equals(theText, gabedogbark))
                    mediaPlayer = MediaPlayer.create(this, R.raw.gabedogbark);

                else if (Objects.equals(theText, bolsdaqeut))
                    mediaPlayer = MediaPlayer.create(this, R.raw.bolsdaqeut);

                else if (Objects.equals(theText, bolsetemqsef))
                    mediaPlayer = MediaPlayer.create(this, R.raw.bolsetemqsef);

                else if (Objects.equals(theText, acertomizeravi))
                    mediaPlayer = MediaPlayer.create(this, R.raw.acertomizeravi);

                else if (Objects.equals(theText, aiaichoque))
                    mediaPlayer = MediaPlayer.create(this, R.raw.aiaichoque);

                else if (Objects.equals(theText, bnsetimaarte))
                    mediaPlayer = MediaPlayer.create(this, R.raw.bnsetimaarte);

                else if (Objects.equals(theText, fausterou))
                    mediaPlayer = MediaPlayer.create(this, R.raw.fausterou);

                else if (Objects.equals(theText, fausttapegfog))
                    mediaPlayer = MediaPlayer.create(this, R.raw.fausttapegfog);
            }
            assert mediaPlayer != null;
            mediaPlayer.start();
        }

    }

Answer 1

The Fragment works in a different way than a Activity:

In the construction of Activity, we use the method onCreate(), where we inform which xml we will use through the method setContentView(android.view.View).

Already in the construction of Fragment, we use the method onCreateView(), where we return to View screen.

Because of this, Fragment does not have the method findViewById and yes to View (returned in the method onCreateView()).

Try it this way:

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
     View view = inflater.inflate(R.layout.tab1, container, false);
     final ImageButton vitasbut = view.findViewById(R.id.vitasbut);
     // Seu código com o botão vitasbut...
    return view;
}

I do not recommend using the Fragment to initialize the objects on screen, as it is invoked before Build screen (call the method onCreateView()).