为什么setBackgroundColor()没用,反而XML里的background可以
package com.example.lenovo.viewbutton;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.View;
/**
* Created by lenovo on 2018/10/31.
*/
public class NewButton extends View
{
public NewButton(Context context, AttributeSet attr)
{
super(context, attr);
setBackgroundColor(0x44ff0000);
}
}