import android.content.Context;import android.support.v7.widget.Toolbar;import android.util.AttributeSet;import com.example.myapplication.R;/** * @author:created By ZhangHao * 时间：2019/4/26 10 * 邮箱：188660586@qq.com */public class CustomToolbar extends Toolbar {   public CustomToolbar(Context context){      this(context,null);  }    public CustomToolbar(Context context, AttributeSet attrs) {        this(context, attrs,0);    }    public  CustomToolbar(Context context,AttributeSet attrs,int defStyleAttr){       super(context,attrs,defStyleAttr);       inflate(context, R.layout.toolbar,this);    }}