<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
  <item name="colorPrimary">@color/blue</item>
  <item name="colorPrimaryDark">@color/blue_dark</item>
  <item name="colorAccent">@color/red</item>
  <item name="textAllCaps">false</item>
 </style>

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

 <android.support.v7.widget.Toolbar
  android:id="@+id/toolbar"
  android:layout_width="match_parent"
  android:layout_height="?android:actionBarSize"
  android:background="?attr/colorPrimary">
  <!--自定义控件-->
  <TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="点击" />

  <ImageView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_marginLeft="2dp"
   android:src="@mipmap/icon" />
 </android.support.v7.widget.Toolbar>
</LinearLayout>

<menu xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto">
 <item
  android:id="@+id/add"
  android:icon="@mipmap/icon_add"
  app:showAsAction="always" />
 <item
  android:id="@+id/add_friend"
  android:title="添加朋友"
  app:showAsAction="never" />
 <item
  android:id="@+id/scace"
  android:title="扫一扫"
  app:showAsAction="never" />
</menu>

package per.lijuan.appbarlayoutdome;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.widget.Toast;

/**
 * Created by lijuan on 2016/8/31.
 */
public class Activity extends AppCompatActivity {
 private Toolbar toolbar;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
  setContentView(R.layout.activity_second);
  toolbar = (Toolbar) findViewById(R.id.toolbar);

  /**
   * 设置标题
   */
  toolbar.setTitle("标题");
  /**
   * 设置子标题
   */
  toolbar.setSubtitle("子标题");
  /**
   * 设置App的logo
   */
  toolbar.setLogo(R.mipmap.ic_launcher);
  /**
   * 设置导航按钮
   */
  toolbar.setNavigationIcon(R.mipmap.back);
  setSupportActionBar(toolbar);
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.menu_main, menu);
  return true;
 }

 /**
  * 设定菜单各按鈕的动作
  *
  * @return
  */
 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  switch (item.getItemId()) {
   case android.R.id.home:
    finish();
    break;
   case R.id.add:
    Toast.makeText(SecondActivity.this, "添加", Toast.LENGTH_SHORT).show();
    break;
   case R.id.add_friend:
    Toast.makeText(SecondActivity.this, "添加朋友", Toast.LENGTH_SHORT).show();
    break;
   case R.id.scace:
    Toast.makeText(SecondActivity.this, "扫一扫", Toast.LENGTH_SHORT).show();
    break;
   default:
    break;
  }
  return super.onOptionsItemSelected(item);
 }
}

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="match_parent">

 <android.support.design.widget.AppBarLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

  <android.support.design.widget.CollapsingToolbarLayout
   android:id="@+id/collapsing_toolbar_layout"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   app:contentScrim="#3F51B5"
   app:layout_scrollFlags="scroll|exitUntilCollapsed">

   <ImageView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:adjustViewBounds="true"
    android:src="@mipmap/icon_bg"
    app:layout_collapseMode="parallax"
    app:layout_collapseParallaxMultiplier="0.5" />

   <android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="56dp"
    app:layout_collapseMode="pin"
    app:title="@string/app_name"
    app:titleTextColor="#FFFFFF" />

  </android.support.design.widget.CollapsingToolbarLayout>

 </android.support.design.widget.AppBarLayout>

 <android.support.v7.widget.RecyclerView
  android:id="@+id/recyclerview"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</android.support.design.widget.CoordinatorLayout>

package com.per.appbarlayout;

import android.graphics.Color;
import android.os.Bundle;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
 public Toolbar mToolbar;
 private RecyclerView mRecyclerView;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  mToolbar = (Toolbar) findViewById(R.id.toolbar);
  mToolbar.setTitleTextColor(Color.GREEN);
  mToolbar.setTitle("AppBarLayout");
  setSupportActionBar(mToolbar);

  getSupportActionBar().setHomeButtonEnabled(true);
  getSupportActionBar().setDisplayHomeAsUpEnabled(true);

  mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);
  mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
  mRecyclerView.setAdapter(new ContentAdapter());

  CollapsingToolbarLayout mCollapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar_layout);
  //通过CollapsingToolbarLayout设置title
  mCollapsingToolbarLayout.setTitle("AppBarLayout");
  //通过CollapsingToolbarLayout修改字体颜色
  mCollapsingToolbarLayout.setExpandedTitleColor(Color.WHITE);//设置还没收缩时状态下字体颜色
  mCollapsingToolbarLayout.setCollapsedTitleTextColor(Color.RED);//设置收缩后Toolbar上字体的颜色
 }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.menu_main, menu);
  return true;
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  switch (item.getItemId()) {
   case android.R.id.home:
    finish();
    break;
  }
  return super.onOptionsItemSelected(item);
 }

 private class ContentAdapter extends RecyclerView.Adapter<ContentAdapter.ContentHolder> {
  @Override
  public ContentAdapter.ContentHolder onCreateViewHolder(ViewGroup parent, int viewType) {
   return new ContentHolder(LayoutInflater.from(MainActivity.this).inflate(android.R.layout.simple_list_item_1, parent, false));
  }

  @Override
  public void onBindViewHolder(ContentAdapter.ContentHolder holder, int position) {
   holder.itemTv.setText("item");
  }

  @Override
  public int getItemCount() {
   return 35;
  }

  class ContentHolder extends RecyclerView.ViewHolder {

   private TextView itemTv;

   public ContentHolder(View itemView) {
    super(itemView);
    itemTv = (TextView) itemView.findViewById(android.R.id.text1);
   }
  }
 }
}