无法使工具栏中的“搜索”按钮膨胀

Question

我有导航视图和片段容器，其中显示了多个片段我的导航视图代码如下所示。即使我试图给搜索按钮充气，我也无法在工具栏中显示搜索按钮

@Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.menu_main, menu);

        MenuItem item = menu.findItem(R.id.action_search);

        super.onCreateOptionsMenu(menu, inflater);
    }



<LinearLayout
    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:fitsSystemWindows="true"
    android:orientation="vertical">

    <android.support.v7.widget.Toolbar
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorPrimary"
        android:id="@+id/toolbar"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:title="e-Vyapar" />

    <android.support.v4.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:id="@+id/drawerLayout"
        >



        <FrameLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/containerView">


        </FrameLayout>
<android.support.design.widget.NavigationView
            xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:id="@+id/shitstuff"
            app:itemTextColor="@color/black"
            app:menu="@menu/drawermenu"
            android:layout_marginTop="-24dp"
            android:paddingTop="10dp"
            />
</android.support.v4.widget.DrawerLayout>
</LinearLayout>




 <menu 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"
    tools:context="com.cdac.ayush.MainActivity">
  <!--  <item
        android:id="@+id/action_settings"
        android:orderInCategory="100"
        android:title="@string/action_settings"
        app:showAsAction="never" />-->


    <item
        android:id="@+id/action_search"
        android:icon="@android:drawable/ic_menu_search"
        android:title="@string/action_search"
        app:actionViewClass="android.support.v7.widget.SearchView"
        app:showAsAction="always|collapseActionView" />
</menu>

任何帮助将不胜感激。

Answer 1

试试这样：

<强> menu_main.xml

Dim parameters As SqlParameter() = 
{
    New SqlParameter With {.ParameterName = "@Exact", .SqlDbType = SqlDbType.VarChar, .Value = matId.ToString()},
    New SqlParameter With {.ParameterName = "@Begin", .SqlDbType = SqlDbType.VarChar, .Value = $"{matId},%"},
    New SqlParameter With {.ParameterName = "@End", .SqlDbType = SqlDbType.VarChar, .Value = $"%,{matId}"},
    New SqlParameter With {.ParameterName = "@Middle", .SqlDbType = SqlDbType.VarChar, .Value = $"%,{matId},%"},
}

与<item android:id="@+id/action_search" android:icon="@android:drawable/ic_menu_search" app:showAsAction="always|collapseActionView" app:actionViewClass="android.support.v7.widget.SearchView" android:title="Search"/> 中的活动相比，这样做：

onCreateOptionsMenu

在Fragment中，您必须在 public boolean onCreateOptionsMenu(Menu menu) { MenuInflater menuInflater = getMenuInflater(); menuInflater.inflate(R.menu.main_menu, menu); MenuItem searchItem = menu.findItem(R.id.action_search); SearchManager searchManager = (SearchManager) MainActivity.this.getSystemService(Context.SEARCH_SERVICE); SearchView searchView = null; if (searchItem != null) { searchView = (SearchView) searchItem.getActionView(); } if (searchView != null) { searchView.setSearchableInfo(searchManager.getSearchableInfo(MainActivity.this.getComponentName())); } searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { @Override public boolean onQueryTextSubmit(String query) { Log.e( "SearchOnQueryTextSubmit: " + query); return false; } @Override public boolean onQueryTextChange(String s) { Log.e( "SearchOnQueryTextChanged: " + s); return false; } }); return super.onCreateOptionsMenu(menu); } 中启用此选项菜单

onCreate