OnClickListener 在片段中不起作用

Question

I have here a problem with the onClicklistener method in a fragment. If I click on the button nothing happens and I don't know why. No error and no output. I've tried to implements the OnClickListener or set a (Button) before the view.findViewById(R.id.button); but nothing helps. I've seen much questions here in Stack Overflow about this problem but no solution from there helps me:/

Do you have any ideas? Thank You!

package com.christoph.myapplication.ui.home;

import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import com.christoph.myapplication.R;

public class HomeFragment extends Fragment {

    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        final View view = inflater.inflate(R.layout.fragment_home, container, false);

        final Button button= view.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                button.setBackgroundColor(Color.RED);
                System.out.println("Hallo");
            }
        });
        return view;
    }
}

Answer 1

You can add click listener rather in onViewCreated function. Try it and let me know if it works. Check android fragment lifecycles documentation for more info.

Cheers