Develop Reference

Is it possible to create swipeable toolbar?

I want to create a second toolbar with all the menu items directing to different activities instead of creating a viewpager with different fragments. I tried to look for example online but all the examples I found are related to viewpager with fragments or collapsing toolbar. Is it possible to have a "swipeable" toolbar so that all menu items can be displayed instead of putting some of the items on overflow button? The layout I have right now is as follows. Thank you so much.
<?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"
tools:context="com.example.ken.android_gam24.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/main_bar_layout"
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>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/main_bar_layout"
android:orientation="horizontal"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.Toolbar
android:id="#+id/supportToolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="?attr/colorAccent"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<include
android:id="#+id/include2"
layout="#layout/content_main"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="159dp"
android:layout_marginEnd="159dp" />
</RelativeLayout>
<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"
app:srcCompat="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>

You can nest a HorizontalScrollview inside your Toolbar layout:
<android.support.v7.widget.Toolbar
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- Buttons -->
</LinearLayout>
</HorizontalScrollView>
</android.support.v7.widget.Toolbar>

I am thinking of using navigationview. The example of its implementation is in this link.
Or you can use the one suggested by mrsegev: use HorizontalScrollview in your Toolbar as it is also a view group.

Overlay on top of toolbar and fab

I want to achieve the following:
Overlay the whole activity with a LinearLayout that is currently not visible and revealed with a CircularReveal animation. It should then look like this. (Also, the Fab should be hidden beneath the semi transparent background of the overlay.)
The screenshot was taken from Android Studio's preview.
But instead it looks like this when testing on my phone.
The toolbar and the fab are above the overlay. I attached my layout below.
I know, I could also solve this with a new activity that is drawn over the previous one with a transparent theme but I would prefer this method as it is easier to work with in the future.
<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"
tools:context="com.jonas.gimmefood.MapsActivity">
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
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/Theme.gimmefood.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/Theme.gimmefood.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<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"
app:fabSize="normal"
android:elevation="2dp"
app:srcCompat="#drawable/ic_my_location_24dp" />
<!-- This is the overlay -->
<LinearLayout
android:id="#+id/overlay"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="visible">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
android:background="#color/primary_dark"
android:orientation="vertical"
android:elevation="2dp">
<!-- elevation for the drop shadow -->
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1">
<android.support.v7.widget.AppCompatEditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layout_marginEnd="52dp"
android:layout_marginStart="4dp"
android:hint="#android:string/search_go" />
<android.support.v7.widget.AppCompatImageButton
android:id="#+id/toolbar_close_icon"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="42dp"
android:layout_height="42dp"
android:layout_gravity="end"
android:layout_marginEnd="4dp"
android:background="?selectableItemBackgroundBorderless"
android:src="#drawable/ic_close_24dp" />
</FrameLayout>
horizontal list view with all the circular buttons
...
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background_transparent"/>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>

I solved it by using PopupWindow (reference here)

Snackbar makes RecyclerView within CoordinatorLayout slide up when it shows

I'm testing the use of Snackbar for the first time and I'm finding a behaviour which I don't understand. My Activity is composed of a Fragment, which is composed of a FrameLayout with a RecyclerView. I'm using Toolbar and Appbar.
When the Snackbar appears it moves the recyclerView up, I don't want it to behave like this, I want the Snackbar to show OVER the RecyclerView without moving it. I can however remove this from the Layout that contains the fragment:
app:layout_behavior="#string/appbar_scrolling_view_behavior"
and then the Snackbar displays as I intend it to but of course my fragment overlaps with the Toolbar. I'm new to CoordinatorLayout so I fail to see how to get the behaviour I want. My full code is below.
My activity:
<? xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/master_coordinator_layout"
xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:animateLayoutChanges="true">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<include
android:id="#+id/toolbar_home"
layout="#layout/toolbar_default"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/randomizerFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
</FrameLayout>
<FrameLayout
android:id="#+id/randomizerScreenFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone">
</FrameLayout>
</LinearLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/randomizeFAB"
android:src="#drawable/ic_play_arrow_white_24dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="40dp"
app:backgroundTint="#color/myYellow"
app:fabSize="normal"
app:layout_anchor="#id/randomizerFragment"
android:scaleType="center"
app:layout_anchorGravity="top|right"
android:visibility="invisible" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/resetFAB"
android:src="#drawable/ic_replay_white_24dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="60dp"
app:backgroundTint="#color/myOrange"
app:fabSize="mini"
app:layout_anchor="#id/randomizerScreenFragment"
android:scaleType="center"
app:layout_anchorGravity="top|right"
android:visibility="invisible" />
</android.support.design.widget.CoordinatorLayout>
My fragment:
<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="wrap_content"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
tools:context=".RandomizerActivity"
android:orientation="vertical"
android:animateLayoutChanges="true">
<android.support.v7.widget.RecyclerView
android:id="#+id/factionsRecyclerView"
android:paddingTop="#dimen/margin_small"
android:layout_width="match_parent"
android:clipToPadding="false"
android:layout_height="wrap_content"/>
</LinearLayout>
I'm using the Snack like thus, fL being the FrameLayout #+id/randomizerFragment.
Snackbar.make(fL, "hey!", Snackbar.LENGTH_SHORT).show();
Any help is welcome.

Can't place Floating Action Button (FAB) between header and items in DrawerLayout using RecyclerView

I can't get the Floating Action Button (FAB) to appear in the correct position. I want it to appear between the header and the first item in my nav drawer.
Currently, I've got it to appear in the bottom right corner of the header and NOT on top of the line between the 1st and 2nd elements (1st element = header & 2nd element = first item in recyclerview).
My app is using the following appcompat items:
appcompat-v7:23.0.0
recyclerview-v7:23.0.0
design:23.0.0
I'm using a nav drawer but I can't use the NavigationView because I need to customize the item entries and not load a simple menu.
As you know, the drawer is really not 2 different controls. The header is actually the '0' element in the RecyclerView. I don't know if this makes a difference.
Here is my current xml for the header/"0 view in RecyclerView":
<?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:layout_width="match_parent"
android:layout_height="#dimen/navdrawer_image_height">
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/navDrawerHeaderView"
android:layout_width="match_parent"
android:layout_height="#dimen/navdrawer_image_height">
<ImageView
android:id="#+id/navdrawer_image"
android:layout_width="wrap_content"
android:layout_height="#dimen/navdrawer_image_height"
android:contentDescription="#string/cd_navdrawer_image"
android:scaleType="centerCrop"
android:src="#drawable/bg_material_design" />
<de.hdodenhof.circleimageview.CircleImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/app_image"
android:layout_width="#dimen/navdrawer_user_picture_size"
android:layout_height="#dimen/navdrawer_user_picture_size"
android:src="#drawable/ic_launcher"
android:layout_marginTop="16dp"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
app:border_width="2dp"
app:border_color="#FF000000"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/appNameTextView"
android:text="App Name"
android:textStyle="bold"
android:layout_marginLeft="16dp"
android:layout_marginStart="16dp"
android:layout_marginBottom="16dp"
android:layout_alignParentBottom="true"
android:textColor="#android:color/white"/>
</RelativeLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:clickable="true"
android:src="#drawable/button_account"
app:layout_anchor="#id/navDrawerHeaderView"
app:layout_anchorGravity="bottom|right|end"
app:elevation="4dp"/>
</android.support.design.widget.CoordinatorLayout>
I think I might have the FAB in the wrong location/file. Here is the xml for the drawer.
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawerLayout"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:fitsSystemWindows="true">
<!-- Content layout -->
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/tool_bar"/>
<FrameLayout
android:id="#+id/contentFrame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/init_background">
</FrameLayout>
</LinearLayout>
<!-- Pages -->
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="320dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:background="#ffffff"
android:scrollbars="vertical"
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.DrawerLayout>
HELP!!!!!

example drawer fragment layout containing your existing RecyclerView:
<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/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="200dp">
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f00"
android:id="#+id/header"/>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:scrollbars="vertical"
android:clickable="true"
android:focusable="true"
android:focusableInTouchMode="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<android.support.design.widget.FloatingActionButton
android:layout_height="wrap_content"
android:layout_width="wrap_content"
app:layout_anchor="#id/appbar"
app:layout_anchorGravity="bottom|right|end"
android:layout_margin="5dp"
android:clickable="true"/>
</android.support.design.widget.CoordinatorLayout>

Bottom navigation bar hides on trying scroll

I have Activity with bottom navigation bar (via roughike BottomBar library). It's look like this:
When i'm trying to scroll page, bottom bar hides automatically. So, I get this:
I want avoid this effect. I do not want hide bottom bar when I'm just trying to scroll content but all content lies on screen.
But if page contains content more than one screen then bottom bar must hides on scroll (and now it's works fine).
My code doesn't have any listeners for scroll and my xml file looks like this:
<android.support.design.widget.CoordinatorLayout
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"
tools:context=".presentation.ui.mainactivity.MainActivity"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/mainCord" >
<android.support.design.widget.AppBarLayout
android:id="#+id/sliderContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_height="?attr/actionBarSize"
android:layout_width="match_parent"
android:background="#color/primary"
android:theme="#style/ToolbarStyle"
app:titleTextAppearance="#style/ToolbarStyle" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:visibility="gone" />
<com.roughike.bottombar.BottomBar
android:id="#+id/bottomBar"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_gravity="bottom"
app:bb_tabXmlResource="#xml/bottom_bar_tabs"
app:bb_activeTabColor="#color/white"
app:bb_inActiveTabColor="#color/bottom_bar_inactive_tab"
app:bb_inActiveTabAlpha="1"
app:bb_behavior="shy|shifting" />
</android.support.design.widget.CoordinatorLayout>
I'm looked for solution for my problem but found nothing. What can i do for avoid this effect?
UPDATED:
FAB is inside ViewPager. Layout for tab on screenshot look like this:
<?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/eventCoordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/refresh"
android:visibility="visible"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<android.support.v7.widget.RecyclerView
android:id="#+id/eventsRecyclerView"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.SwipeRefreshLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity = "center"
android:gravity="center" >
<TextView
android:id="#+id/emptyText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/secondary_text"
android:textSize="16sp"
android:gravity="center"
android:text="#string/empty_events_text"
android:drawableTop="#drawable/ic_no_calendar"
android:drawablePadding="4dp"
android:visibility="gone" />
<TextView
android:id="#+id/createEventText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/create_event_text"
android:textColor="#color/secondary_text"
android:textSize="16sp"
android:visibility="gone" />
<TextView
android:id="#+id/createEventButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/primary"
android:text="#string/create_event"
android:textSize="16sp"
android:visibility="gone" />
</LinearLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/createEvent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:src="#drawable/ic_add_white_24dp"
style="#style/floating_action_button"
app:layout_anchor="#id/eventsRecyclerView"
app:layout_anchorGravity="bottom|end"
app:borderWidth="0dp"
app:elevation="6dp"
app:pressedTranslationZ="12dp" />
<RelativeLayout
android:id="#+id/loadingPanel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center" >
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:indeterminate="true" />
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>

app:bb_behavior="underNavbar"
You have an issue in the following code
<com.roughike.bottombar.BottomBar
android:id="#+id/bottomBar"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_gravity="bottom"
app:bb_tabXmlResource="#xml/bottom_bar_tabs"
app:bb_activeTabColor="#color/white"
app:bb_inActiveTabColor="#color/bottom_bar_inactive_tab"
app:bb_inActiveTabAlpha="1"
app:bb_behavior="shy|shifting" />
replace the
app:bb_behavior="shy|shifting"
with
app:bb_behavior="underNavbar"
Hope this works for you!

Check your manifest FILE and make sure you're not using full screen theme...However, you can use the following code to hide and show the bar on android higher than API 19. To hide the bar, just change VISIBLE to GONE, and make sure you call the showNavBar() method in both your onCreate() and onResume() method
public void showNavBar() {
View view = getWindow().getDecorView();
view.setSystemUiVisibility(View.VISIBLE);
}

I had the same issue, I fixed it by doing this:
In activity_main.xml add this to the CoordinatorLayout:
android:fitsSystemWindows="true"
The viewpager should be like this:
<android.support.v4.view.ViewPager
android:background="#color/colorPrimary"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
And in all your Fragments, they should start with NestedScrollView and must contain (fillViewport):
<android.support.v4.widget.NestedScrollView 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/constraintLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
tools:context="com.khan.junaid.phonefans.MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fans_list_view"
/>
</android.support.v4.widget.NestedScrollView>
These settings will make the fragments scrollable, and the content will no more be hiding behind the Navigation bar buttons.