分类自定义View

package com.example.moni3_demo.customview;

import android.content.Context;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;

import com.example.moni3_demo.R;

public class CustomView extends LinearLayout {

private Button button1,button2;
private EditText editText1;

public CustomView(Context context) {
    super(context);
}

public CustomView(Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
    LayoutInflater.from(context).inflate(R.layout.customview,this);
    button1 = findViewById(R.id.btn);
    button2 = findViewById(R.id.btn2);
    editText1 = findViewById(R.id.edit_text);
}

}