自定义View组合控件

package com.example.myview_homework_demo;

import android.annotation.SuppressLint;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class Combination extends RelativeLayout {

    private final TextView button_combination;
    private final EditText edittext_combination;

    @SuppressLint("WrongViewCast")
    public Combination(Context context, AttributeSet attrs) {
        super(context, attrs);

        LayoutInflater.from(context).inflate(R.layout.combination_layout,this);

        button_combination = findViewById(R.id.button_combination);
        edittext_combination = findViewById(R.id.edittext_combination);

        button_combination.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                onClick.clickButton(v);
            }
        });
        edittext_combination.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                onClick.clickEditext(v);
            }
        });

    }

    public interface OnClick{
        void clickButton(View view);
        void clickEditext(View view);
    }

    private OnClick onClick;

    public void setOnClick(OnClick onClick) {
        this.onClick = onClick;
    }
}