Ido567 Ido567 - 2 months ago 44
Android Question

Replace toolbar layout according to the displayed fragment

I have an activity with navigation drawer which replace the main_fragment_container on the activity.
When one of the fragments is displayed I want to change the layout of the toolbar and add a spinner to it (and remove it when the fragment is hidden).

My layout looks like that:

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:sothree="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_parent_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:fitsSystemWindows="true">

<android.support.v7.widget.Toolbar

android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
sothree:theme="@style/AppTheme.ActionBar" />

<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">

<!-- Main layout -->
<FrameLayout
android:id="@+id/main_fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />

<!-- Nav drawer -->
<fragment
android:id="@+id/fragment_drawer"
android:name="com.idob.mysoccer.ui.DrawerFragment"
android:layout_width="@dimen/navigation_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="left|start" />
</android.support.v4.widget.DrawerLayout>



Answer

Not sure what you are trying to accomplish but I think, if possible, you should approach this by letting the fragments customize your toolbar rather than replacing it. Your can let your fragments hide/show views on the toolbar depending on your needs.

Add setHasOptionsMenu(true); in the fragments OnCreateView() and then override onOptionsMenuCreated()

Like this:

@Override
public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    setHasOptionsMenu(true);
    return inflater.inflate(R.layout.result_list, container, false);
}

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

If you need to do more specific things with the toolbar you can get the instance using

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);