标题栏

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <com.gjl.day_06.MyTitle
        android:id="@+id/myTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"></com.gjl.day_06.MyTitle>

</LinearLayout>

title_layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="40dp"
                android:background="#f00"
    >

    <Button
        android:id="@+id/back"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:background="#F0F"
        android:text="返回"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:gravity="center"
        android:text="标题"
        android:textColor="@android:color/white"/>

    <Button
        android:id="@+id/tijiao"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:text="提交"/>

</RelativeLayout>

package com.gjl.day_06;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.Toast;

/**
 * Created by Administrator on 2017/12/29 0029.
 */

public class MyTitle extends RelativeLayout implements View.OnClickListener{
   private Context mContext;
   private static final String TAG = "MyTitle";
   public MyTitle(Context context) {
      this(context, null);
   }

   public MyTitle(Context context, AttributeSet attrs) {
      this(context, attrs, 0);
   }

   public MyTitle(Context context, AttributeSet attrs, int defStyleAttr) {
      super(context, attrs, defStyleAttr);
      //初始化布局
      LayoutInflater inflater = LayoutInflater.from(context);
      //必须依赖父布局
//    View view = inflater.inflate(R.layout.title_layout, null);
      View view = inflater.inflate(R.layout.title_layout, this,true);
      //找到控件
      Button back = view.findViewById(R.id.back);
      Button tijiao = view.findViewById(R.id.tijiao);
      //设置点击事件
      back.setOnClickListener(this);
      tijiao.setOnClickListener(this);
      mContext = context;
   }

   @Override
   public void onClick(View v) {
      switch (v.getId()){
         case R.id.back:
            Log.d(TAG, "onClick() returned: " + "fanhui-----");
            Toast.makeText(mContext,"返回",Toast.LENGTH_SHORT).show();
            break;
         case R.id.tijiao:
            Log.d(TAG, "onClick() returned: " + "提交---");
            Toast.makeText(mContext,"提交",Toast.LENGTH_SHORT).show();
            break;
      }
   }
}