Java 如何在Fragment类中显示工具栏中的菜单项?
我在片段中添加了一个菜单,并希望在工具栏中显示菜单项 菜单xml如下所示:Java 如何在Fragment类中显示工具栏中的菜单项?,java,android,xml,layout,android-toolbar,Java,Android,Xml,Layout,Android Toolbar,我在片段中添加了一个菜单,并希望在工具栏中显示菜单项 菜单xml如下所示: <?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <item android:id="@+id/a
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/action_note"
android:icon="@drawable/ic_more_24dp"
app:showAsAction="always"
android:visible="true"
android:orderInCategory="1"
android:title="Note"/>
<item
android:id="@+id/action_submit"
android:icon="@drawable/ic_more_24dp"
app:showAsAction="always"
android:orderInCategory="2"
android:title="Submit"/>
</menu>
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".DashboardActivity">
<include layout="@layout/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</include>
<FrameLayout
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_above="@+id/navigationView"
android:layout_height="match_parent"
android:layout_marginBottom="56dp"
android:layout_marginTop="56dp"
/>
<android.support.design.widget.BottomNavigationView
android:id="@+id/navigationView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="0dp"
android:layout_marginStart="0dp"
android:background="?android:attr/windowBackground"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:itemBackground="@android:color/white"
app:itemIconTint="@color/cardview_dark_background"
app:itemTextColor="@android:color/black"
app:menu="@menu/navigation_menu"
/>
</android.support.constraint.ConstraintLayout>
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setHasOptionsMenu(true);
init();
}
然后输入菜单的代码
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.menu_attendance, menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.action_submit:
return true;
case R.id.action_note:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
我已经添加了hasOptionMenu(true),但菜单项仍不会显示在工具栏中请尝试替换此代码:
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.menu_attendance, menu);
}
到
使用不是supportedIt的支持片段很奇怪,因为所有关于选项菜单的逻辑都应该在活动上,而不是在片段中。
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_attendance, menu);
return true;
}