当有人单击导航视图时，我想调用 onNavigationItemSelected。该代码不调用该onNavigationItemSelected方法：
public boolean onNavigationItemSelected(MenuItem menuItem) {
Log.d("Hello","called navigation");
switch (menuItem.getItemId()) {
case R.id.home:
mDrawerLayout.closeDrawer(GravityCompat.START);
break;
default:
mDrawerLayout.closeDrawer(GravityCompat.START);
break;
}
return false;
}
activity_main.xml 是：
<android.support.v4.widget.DrawerLayout 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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="slidenerd.vivz.navigationviewdemo.MainActivity">
<LinearLayout
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="@+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="@+id/main_drawer"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/drawer_header"
app:itemIconTint="@color/colorAccent"
app:itemTextColor="@color/colorTextSecondary"
app:menu="@menu/menu_drawer" />
导航菜单是：
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<!--All the items added without any grouping-->
<item
android:id="@+id/home"
android:icon="@drawable/ic_home"
android:title="@string/home" />
<item
android:id="@+id/statistics"
android:icon="@drawable/ic_trending_up"
android:title="@string/statistics" />
<item
android:id="@+id/navigation_item_3"
android:icon="@drawable/ic_pencil"
android:title="@string/navigation_item_3" />
</menu>
但是，代码不起作用。请帮我解决问题。