I want to add fragment button but it is not working-CodePudding

i am new to android, i want to add fragment button like in activity, but i can't add it where do i add it (findViewById is not coming out when i try to add it anywhere)


    private ImageView walleticon;
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    private String mParam1;
    private String mParam2;


    public static SatisFragment newInstance(String param1, String param2) {
        SatisFragment fragment = new SatisFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_satis, container, false);
    }
    public SatisFragment(){

    }
}```

CodePudding user response：

In fragments the view is accessed in a different way.

In an Activity you use, setContentView(R.layout.activity_main); This allows the use of straight calls to findViewById(R.id.button);

In a Fragment findViewById only exists at the individual view level.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_satis, container, false);
    Button button = view.findViewById(R.id.button); //<-- Here is your button
    return view;
}

CodePudding user response：

    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        ImageView walleticon = (ImageView) getView().findViewById(R.id.wallet);
        // or  (ImageView) view.findViewById(R.id.foo);
        walleticon.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(getActivity(), "hey", Toast.LENGTH_SHORT).show();
            }
        });
    }```