ariets ariets - 2 months ago 17
Android Question

Toolbar and Contextual ActionBar with AppCompat-v7

I am working on using the newly added Toolbar that was introduced in Lollipop and the AppCompat-v7 library. I followed this guide on setting up the Toolbar I noticed that when you invoke something that will bring up the contextual ActionBar (such as highlighting text for copy/pasting), that it will push the Toolbar down on the page. You can see what I am talking about in the image at the bottom of the page:

So, essentially, I set it up like this. I have the Toolbar defined in an xml file that I use with include tags:

<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"/>


Then, I instantiate it in my view:

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/root"
tools:context=".MainActivity">

<include
layout="@layout/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>

<!-- Rest of view -->

</LinearLayout>


In code, I set it up like so:

// On Create method of activity:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);


Does anyone know how to make it so that the Contextual ActionBar comes overtop of the Toolbar?

Toolbar and Contextual ActionBar

Answer

Update:

Solution: use the windowActionModeOverlay property. Set this in your theme:

<item name="windowActionModeOverlay">true</item>

and the actionmode will be shown over the action bar instead of pushing it down. (If you're not using the latest AppCompat then you need to add the "android:" prefix to the property). It basically lets AppCompat know that you have a toolbar located in the top of the screen and that it should draw the ActionMode on top of it.


Old answer/workaround:

I ran into the same problem. No matter what theme I set, it always pushes down the Toolbar I set as ActionBar. I tried with and without the support library, but it didn't matter.

Unfortunately I was not able to fix it so I have built a workaround instead. In my ActionModeCallback's onCreateActionMode I hide the action bar:

actionBarToolbar.setVisibility(View.GONE);

and in onDestroyActionModeI show it again:

actionBarToolbar.setVisibility(View.VISIBLE);

The hiding/showing happens so quickly it is not noticeable on my test devices. There is of course a downside: although the enter-animation still works, the exit-animation of the contextual action bar gets lost because the Toolbar immediately pops over it. But until we come across a better solution I guess we are stuck with this.


(My Activity is actually extending a custom BaseActivity class which has a method called getActionBarToolbar(), taken from the Google I/O 2014 app source code, so I can easily get fetch the Toolbar:

BaseActivity activity = (BaseActivity) getActivity();
activity.getActionBarToolbar().setVisibility(View.GONE);

Too bad the I/O app does not use the contextual action bar.)

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