CollapsingToolBar not working on tab switch - android

MY ISSUE:
When my activity is opened the first time I can collapse by dragging on the image but after switching to other tabs I can't collapse the layout by pulling on the image view. Once the view pager is scrolled, I can Collapse the toolbar using the top image view. Please look at the GIF. I think this is because of the view pager nested scrolling. I don't know the cause. but Why can't I drag the top Image view once the tab is switched?
MY ACTIVITY CODE:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.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:orientation="vertical"
android:nestedScrollingEnabled="false"
tools:context=".MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:id="#+id/collapsingToolbarLayout"
android:layout_width="match_parent"
android:nestedScrollingEnabled="false"
android:layout_height="256dp"
app:titleEnabled="false"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/tool_bg"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"/>
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/black"
android:alpha="0.3"/>
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolBar"
android:layout_width="match_parent"
android:layout_height="48dp"
app:layout_collapseMode="pin"
android:background="#drawable/fade"
app:title="hello"
android:layout_marginTop="4dp"
android:layout_marginStart="5dp"
android:layout_marginEnd="5dp"
app:menu="#menu/three_line"
android:layout_marginBottom="48dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
/>
<com.google.android.material.tabs.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="#android:color/transparent"
app:tabSelectedTextColor="#color/white"/>
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager2.widget.ViewPager2
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
MY TAB FRAGMENT CODE:
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView 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"
tools:context=".HomeFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textSize="60dp"
android:textStyle="bold"
android:text="Home" />
</androidx.core.widget.NestedScrollView>
I have also tried to use ConstrainLayout in fragment with RecyclerView but it is not working.

Related

Display a loading view in the center of a recyclerview

I have a layout that uses a coordinator layout as the root that has a collapsible toolbar and a header view. Underneath I have a recyclerview where I display a list of items.
I have having a problem displaying the loadingView in the center of the recyclerview. I have been trying to use the constraint layout without success. So if the header is collapsed or expanded it should alway display in the center of the recyclerview and not the actual screen.
Here is my layout:
<?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:id="#+id/search_result_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsingToolbarLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:collapsedTitleGravity="left"
app:contentScrim="#color/toolbar_color"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<include
android:id="#+id/header"
layout="#layout/list_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.3" />
<cToolbar
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>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="#+id/contentView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<CustomOverlayLoadingView
android:id="#+id/loadingView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="#id/contentView"
app:layout_constraintTop_toTopOf="#id/contentView"
android:visibility="gone"
tools:visibility="visible" />
</android.support.constraint.ConstraintLayout>
</android.support.design.widget.CoordinatorLayout>
Update:
This is the image I get when I update with your answer. As you can see the image displays directly under the header. However, I would like it to be displayed in the center of the recyclerview.

Try this one...:)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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/search_result_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsingToolbarLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:collapsedTitleGravity="left"
app:contentScrim="#color/toolbar_color"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<include
android:id="#+id/header"
layout="#layout/list_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.3" />
<cToolbar
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>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_below="#+id/appBarLayout">
<android.support.v7.widget.RecyclerView
android:id="#+id/contentView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<CustomOverlayLoadingView
android:id="#+id/loadingView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:visibility="gone"
tools:visibility="visible" />
</RelativeLayout>
</RelativeLayout>

Setting the proper constraints for the RecyclerView should help here. This is how the ConstraintLayout for the main content should look like:
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/contentView"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<CustomOverlayLoadingView
android:id="#+id/loadingView"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="#id/contentView"
app:layout_constraintEnd_toEndOf="#id/contentView"
app:layout_constraintStart_toStartOf="#id/contentView"
app:layout_constraintTop_toTopOf="#id/contentView"
android:visibility="gone"
tools:visibility="visible" />
</android.support.constraint.ConstraintLayout>

CollapsingToolbarLayout doesn't collapse anything

I want to hide and show the toolbar when I scroll down and up in a recycler view fragment, but the CollapsingToolbarLayout doesn't do what it's supposed to do.
First I tried to do it with just the coordinator layout and it worked, but it's not as fluid as the collapsing toolbar layout (when it works that is)
Is it because the recycler view is in a fragment? What is the problem exactly?
Main layout:
<?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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="7dp">
<android.support.design.widget.CoordinatorLayout
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="com.github.mpivchev.app.activities.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="2dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<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/ThemeOverlay.AppCompat.Light"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Spinner
android:id="#+id/spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:gravity="start"
android:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:spinnerMode="dialog" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:fontFamily="#font/roboto"
android:paddingTop="18dp"
android:text="TestString" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" >
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/nav_header_main"
app:menu="#menu/main_drawer" />
Part of fragment layout:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
...
</android.support.constraint.ConstraintLayout>

Your toolbar doesn't have a defined collapseMode, so there's no instruction for how it should behave. Add app:collapseMode="pin" to your Toolbar xml.

Nested Coordinator layout and Appbar Layout

Trying to build layout in which the activity has Coordinator layout and Appbar layout. The appbar layout has tab layout, which is connected to a view pager. In the view pager, the first fragment has another coordinator layout and an appbar layout. When the scroll happens in appbar layout, I want the Activity's appbar layout also to scroll.
Activity's 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"
android:id="#+id/coord"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapse_layout"
android:layout_width="match_parent"
android:layout_height="200dp"
app:layout_scrollFlags="scroll|snap|enterAlwaysCollapsed">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/material_flat"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
style="#style/ToolBarWithNavigationBack"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#android:color/transparent"
app:layout_collapseMode="pin"></android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
<LinearLayout
android:id="#+id/tab_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="#android:color/white"
android:clipToPadding="true"
android:gravity="center"
android:orientation="vertical"
android:paddingTop="10dp"
app:layout_scrollFlags="scroll|enterAlways|snap">
<android.support.design.widget.TabLayout
android:layout_width="fill_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
app:tabIndicatorColor="#BDBDBD"
app:tabIndicatorHeight="4dp"
app:tabSelectedTextColor="?android:attr/textColorPrimaryInverse"
app:tabTextAppearance="#android:style/TextAppearance.Widget.TabWidget" />
</LinearLayout>
</android.support.design.widget.AppBarLayout>
​
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
The fragment's xml
<?xml version="1.0" encoding="utf-8"?>
<NestedCoordinatorLayout
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:background="#android:color/background_light">
<android.support.design.widget.AppBarLayout
android:id="#+id/main.appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
app:theme="#style/ThemeOverlay.AppCompat.Dark">
<LinearLayout
android:id="#+id/home"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#e3e6e8"
android:gravity="center"
android:orientation="vertical"
android:padding="20dp"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed|snap">
<android.support.v7.widget.CardView
card_view:cardCornerRadius="4dp"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_margin="24dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/shade_gradient" />
</android.support.v7.widget.CardView>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="15dp" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/simple.viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</NestedCoordinatorLayout>
When the appbar scrolls in the fragment, I want the activity's appbar to scroll also.
I have used the NestedCoordinatorLayout as suggested in CoordinatorLayout inside another CoordinatorLayout
Please let me know how to achieve that
Thanks!

Coordinator Layout with ViewPager and ListFragment not scrolling

I have implemented a view pager within a Coordinator layout that contains a ListFragment. The view pager is working fine but the list does not scroll,
can anyone help? Do I have to implement something to recognise the direction of the touch and then disable touch events?
Coordinator Layout:
<?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=".MainActivity">
<android.support.design.widget.AppBarLayout android:id="#+id/app_bar"
android:layout_height="wrap_content" android:layout_width="match_parent"
android:theme="#style/AppTheme.AppBarOverlay">
<LinearLayout
android:orientation="vertical"
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"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<com.passwordstore.utility.SlidingTabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary" />
<View
android:layout_width="match_parent"
android:layout_height="4dp"
android:background="#android:color/white"
android:foreground="#drawable/shadow"/>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_height="0dp"
android:layout_width="match_parent"
android:layout_weight="1"
android:background="#android:color/white"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</LinearLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout android:layout_width="match_parent" android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" android:id="#+id/frameLayout">
<include layout="#layout/activity_password_list" />
</FrameLayout>
<android.support.design.widget.FloatingActionButton android:id="#+id/fabNew"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_margin="#dimen/fab_margin" android:src="#drawable/ic_add_white_24dp"
app:layout_anchor="#+id/frameLayout"
app:layout_anchorGravity="bottom|right|end"/>
</android.support.design.widget.CoordinatorLayout>
Fragment - activity_password_list:
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:id="#+id/item_list"
android:name="com.passwordstore.fragment.PasswordListFragment" android:layout_width="match_parent"
android:layout_height="match_parent" android:layout_marginLeft="16dp"
android:layout_marginRight="16dp" tools:context=".PasswordListActivity"
tools:layout="#android:layout/list_content" />

I had the same result with the same issue, i just had to used these custom layouts, you may want to take a look:
https://github.com/TheLittleNaruto/SupportDesignExample/tree/master/app/src/main/java/com/thelittlenaruto/supportdesignexample/customview

How do I fix a layout inside Coordinator Layout?

Currently recycler view and the app bar scrolls . Now I need to fix the relative layout rlProductCheckout to the bottom of the screen even if the recyclerview and app bar scrolls. Current relative layout disappears when I start scrolling, it reappears only when I move back to the start of the list.
content_products_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:showIn="#layout/activity_products_list">
<android.support.v7.widget.RecyclerView
android:id="#+id/rvProductList"
android:layout_above="#+id/rlProductCheckout"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:gravity="center_vertical"
android:id="#+id/rlProductCheckout"
android:layout_alignParentBottom="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Checkout"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_menu_send"
android:layout_alignParentRight="true"/>
</RelativeLayout>
</RelativeLayout>
activity_products_layout.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">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="#color/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/expandedImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#mipmap/prod1"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7" />
<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>
<include layout="#layout/content_products_list" />
</android.support.design.widget.CoordinatorLayout>

Try to wrap the RelativeLayout outside the CoordinatorLayout. Try some this like How to put RelativeLayout inside CoordinatorLayout

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