Develop Reference

How to properly place a Page indicator.?

I have created this page indicator but i could not get it to a right position. I want it to be in the middle of the image or at the bottom of the image but it is at the very top near the back button and I tried but could not change its position.
Here is the image of the activity:
Here is the xml of the activity I am using. The Page indicator View as you see is under View Pager. Any type of help would be appreciated.
<android.support.design.widget.CoordinatorLayout 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"
xmlns:attrs="http://schemas.android.com/apk/res-auto"
android:background="#424242"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/appbar_header_height"
android:fitsSystemWindows="true"
android:theme="#style/Theme.AppCompat.Light.DarkActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:expandedTitleMarginStart="#dimen/activity_margin_content"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/viewPager"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"/>
<com.rd.PageIndicatorView
android:id="#+id/pageIndicatorView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="48dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
app:piv_animationType="worm"
app:piv_dynamicCount="true"
app:piv_interactiveAnimation="true"
app:piv_selectedColor="#color/gray_50"
app:piv_unselectedColor="#color/gray_300"
app:piv_viewPager="#id/viewPager"
attrs:piv_padding="12dp"
attrs:piv_radius="8dp" />
<View
android:layout_width="match_parent"
android:layout_height="160dp"
android:layout_gravity="bottom"
android:background="#drawable/scrim"/>
<android.support.v7.widget.Toolbar
android:id="#+id/anim_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/rv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:paddingBottom="#dimen/activity_margin_content"
android:paddingTop="#dimen/activity_margin_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:listItem="#layout/item_dessert"/>
viewPager = (ViewPager)findViewById(R.id.viewPager);
myCustomPagerAdapter = new MyCustomPagerAdapter(AnimateToolbar.this, images);
viewPager.setAdapter(myCustomPagerAdapter);
final PageIndicatorView pageIndicatorView = findViewById(R.id.pageIndicatorView);
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {/*empty*/}
#Override
public void onPageSelected(int position) {
pageIndicatorView.setSelection(position);
}
#Override
public void onPageScrollStateChanged(int state) {/*empty*/}
});
the attrs are just the resources i have defined for how big the PageIndicatorView is it has nothing to do with its original positioning.

Android - CollapsingToolbarLayout setHomeButtonEnabled

I'm having trouble implementing HomeUpEnabled when using CollapsingToolbarLayout, I can see the icon but noting happens when I press it.
Here is the CollapsingToolbarLayout
avivity.xml
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="250dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed">
<ImageView
android:id="#+id/header_id"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax" />
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#80000000" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
Activity.java
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
I have declared the activity in my manifest. Any help would be appreciated.
----------------------------EDIT-----------------------------------
THIS IS WHAT FIXED IT:
I don't know if it is correct, but it works.
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
onBackPressed();
}
});
#Override
public void onBackPressed() {
super.onBackPressed();
finish();
}
And in my xml I changed the background of the toolbar to:
android:background="?android:attr/selectableItemBackground"
to get the ripple effect on the icon.
Hope this helps someone.

Overrited Following method and specify your action in method block with menu id as home :
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
drawerLayout.openDrawer(GravityCompat.START); // OPEN DRAWER
return super.onOptionsItemSelected(item);
}
return super.onOptionsItemSelected(item);
}

You have to set the parent activity name in your manifest.xml
Your code is correct but only displays the back arrow on your toolbar, you have to tell your activity which is the activity to come back to.
<activity android:name="YourActivity" android:parentActivityName="YourParentActivity" />

Ok, Create 3 different xml file for activity_main, app_bar and content_main
app_bar
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:background="#color/colorPrimaryDark"
app:contentScrim="?attr/colorPrimaryDark"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
app:tabIndicatorHeight="5dp"
android:background="#color/material_blue_grey_800"
app:tabIndicatorColor="#color/colorPrimaryDark"
app:tabSelectedTextColor="#color/colorPrimaryDark"
app:tabGravity="fill"
app:tabMode="fixed"/>
</android.support.design.widget.CollapsingToolbarLayout>
content_main
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="MainActivity"
tools:showIn="#layout/activity_main">
<android.support.v4.view.ViewPager
android:id="#+id/tabs_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
activity_main
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"
android:orientation="vertical">
<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="?attr/actionBarSize"
android:layout_gravity="top"
android:background="#color/colorPrimaryDark"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:minHeight="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:title="" />
<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">
<include
layout="#layout/app_bar"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<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/mystuff"
app:menu="#menu/drawermenu" />
</android.support.v4.widget.DrawerLayout>

Android: FloatingActionButton Click Event not working

I have been implementing a FloatingActionButton but somehow hasn't been responding at all. There's no error, nothing happens.
Here is respective Java and xml code:
I have replaced the code in Click event with a Log Event
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.e("ABCD","ABCD");
}
});
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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"
android:fitsSystemWindows="true"
tools:context="edu.ahduni.seas.gyapak.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:clickable="true"
android:src="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/textlayout"
tools:context="edu.ahduni.seas.gyapak.MainActivity">
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/grid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
android:padding="10dp" />
</LinearLayout>

Lets put the Toolbar and AppbarLayout below the fab, and see what happens:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/root"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical">
<LinearLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<!-- include your layout here -->
</LinearLayout>
<!-- when the screen is loading, in your case optional -->
<LinearLayout
android:id="#+id/progress"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="gone">
<include layout="#layout/layout_loading"></include>
</LinearLayout>
<!-- when the screen is empty no data, in your case optional -->
<LinearLayout
android:id="#+id/empty"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="gone">
<include layout="#layout/layout_empty"></include>
</LinearLayout>
<!-- a fab -->
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
app:backgroundTint="#009688"
style="#style/FabStyle"
android:layout_gravity="bottom|end"
android:layout_marginBottom="20dp"
android:visibility="invisible" />
<!-- the toolbar layout -->
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:title="#string/app_name"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Dark" />
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
First check the fab click without the content, then try it with the content in content linear layout.
I modified your layout to this (removed all the content) and the click is
working
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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"
android:fitsSystemWindows="true">
<!--<include layout="#layout/content_main" />-->
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:layout_gravity="bottom|end"
android:clickable="true"
android:src="#android:drawable/ic_dialog_email"
app:backgroundTint="#FF0000"
app:rippleColor="#FFF" />
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
So your grid view must be taking all the click passthroughs, let me check and get back again.
[Edit]
It is not GridView after all. There was one unnecessary line in the code.
Voila found your problem, remove this line on your onPostExecute() of ParseActivity
MainActivity.this.setContentView(R.layout.activity_main);
near Line number 286 probably.
this sets the layout again and doesn't register the on click listener, thats why when it was in the layout file (DownloadZip), it was working.
If it is necessary for you then reinit the layout i.e. find the fab and put another setOnClickListener. you could put those code in a method and call them on the places you need to reinit layout.

Replace the code of activity_main with these :
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"></android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="20dp"
android:src="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>

The code is right. Are you sure that you are override
protected void onCreate(#Nullable Bundle savedInstanceState)
instead of
public void onCreate(Bundle savedInstanceState, PersistableBundle persistentState)
?
Example:
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_incoming_call);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fabCall);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d("mylog" , "it happens...");
}
});
}

Multiple root tags ViewPager

Added "ViewPager" part in order to be able to create swipe views with tabs and started to get errors. Getting error in the beginning of "RelativeLayout".
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<RelativeLayout
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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.jonas.test.MainActivity"
tools:showIn="#layout/activity_main">
<EditText
android:id="#+id/edit_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/edit_message" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_send"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />

I think you shouldn't put relative layout with a viewpager, just the viewpager with a toolbar :
<android.support.design.widget.CoordinatorLayout 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.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabGravity="fill"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
And then add your content with an adapter in your mainactivity.java :
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new OneFragment(), "ONE");
adapter.addFragment(new TwoFragment(), "TWO");
adapter.addFragment(new ThreeFragment(), "THREE");
viewPager.setAdapter(adapter);
}
More info on this link : http://www.androidhive.info/2015/09/android-material-design-working-with-tabs/

Appbar covers my settings fragment

I'm trying to develop an Android application and I have a problem. I have one Navigation Drawer Activity, and when I click on an item from the Drawer it dynamically adds the fragment to the given activity from java code. This works perfectly with my news Fragment but when I want to add my Settings fragment (which is a PreferenceFragment) there is a slight problem: the appbar covers the top part (content) of my PreferenceFragment. How can I make my PreferenceFragment to stay (appear) below the appbar? Thanks in advance!
This is my activity_main.xml file.
<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"
android:fitsSystemWindows="true" tools:openDrawer="start">
<include layout="#layout/app_bar_main" android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView android:id="#+id/nav_view"
android:layout_width="wrap_content" android:layout_height="match_parent"
android:layout_gravity="start" android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header_main" app:menu="#menu/activity_main_drawer" />
This is my app_bar_main.xml file.
<android.support.design.widget.CoordinatorLayout
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:id="#+id/fragment_container"
android:layout_height="match_parent" android:fitsSystemWindows="true"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar android:id="#+id/toolbar"
android:layout_width="match_parent" android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
This is how I add the Settings fragment to my activity:
fragmentTransaction.add(R.id.fragment_container, settingsFragment).commit();
My SettingsFragment looks like this:
public class SettingsFragment extends PreferenceFragment {
private static final boolean ALWAYS_SIMPLE_PREFS = false;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Load the preferences from an XML resource
addPreferencesFromResource(R.xml.pref_notification);
Preference aboutPref = (Preference) findPreference("aboutKey");
aboutPref.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
// some event handling code
});
Preference notiPref = (Preference) findPreference("notifications");
notiPref.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
// some event handling code
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == android.R.id.home) {
return true;
}
return super.onOptionsItemSelected(item);
}
private static boolean isXLargeTablet(Context context) {
return (context.getResources().getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
}
private static boolean isSimplePreferences(Context context) {
return ALWAYS_SIMPLE_PREFS
|| Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
|| !isXLargeTablet(context);
}
}

The solution was to add an empty RelativeLayout element to the app_bar_main.xml layout file, which would look something like this:
<android.support.design.widget.CoordinatorLayout
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" android:fitsSystemWindows="true"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar android:id="#+id/toolbar"
android:layout_width="match_parent" android:layout_height="? attr/actionBarSize"
android:background="?attr/colorPrimary" app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<RelativeLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior">
</RelativeLayout>