继承控件

import android.content.Context;import android.graphics.Color;import android.util.AttributeSet;import android.widget.Button;/** * author:Created by WangZhiQiang on 2017/11/2. */public class MyButton extends Button {    public MyButton(Context context) {        this(context,null);    }    public MyButton(Context context, AttributeSet attrs) {        this(context, attrs,0);    }    public MyButton(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        initview();    }    private void initview() {         setBackgroundColor(Color.parseColor("#FF0000"));    }}