android顶部(toolbar)搜索框实现代码

<?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:id="@+id/main_content"                         android:layout_width="match_parent"                         android:layout_height="match_parent"                         android:focusableInTouchMode="true"                         android:fitsSystemWindows="true">  <android.support.v4.widget.NestedScrollView    android:layout_width="match_parent"    android:layout_height="match_parent"    app:layout_behavior="@string/appbar_scrolling_view_behavior">    <TextView      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:padding="16dp"      android:text="@string/large_text" />  </android.support.v4.widget.NestedScrollView>  <android.support.design.widget.AppBarLayout    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:theme="@style/ThemeOverlay.AppCompat.Dark">    <android.support.v7.widget.Toolbar      android:id="@+id/toolbar"      android:layout_width="match_parent"      android:layout_height="?attr/actionBarSize"      android:background="@color/colorPrimary"      app:layout_scrollFlags="scroll|enterAlways"      app:title="标题栏"      app:navigationIcon="@mipmap/navigation_back_white"      app:popupTheme="@style/ThemeOverlay.AppCompat.Light"      app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />    <RelativeLayout      android:id="@+id/search_layout"      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:layout_below="@+id/toolbar"      android:background="@color/colorPrimary"      android:padding="16dp">      <EditText        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:drawableLeft="@android:drawable/ic_menu_camera"        android:drawablePadding="22dp"        android:drawableRight="@android:drawable/ic_menu_search"        android:gravity="left|center"        android:hint="请输入搜索内容"        android:padding="10dp"        android:textColorHint="@android:color/darker_gray" />    </RelativeLayout>  </android.support.design.widget.AppBarLayout></android.support.design.widget.CoordinatorLayout>

public class StopSearchViewBelowToolbarActivity extends AppCompatActivity {  @Override  protected void onCreate(@Nullable Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_stop_search_view_toolbar_layout);  }}