Develop Reference

The view is not a child of CoordinatorLayout

I am getting java.lang.RuntimeException: Unable to start activity java.lang.IllegalArgumentException: The view is not a child of CoordinatorLayout.working with bottom sheet, I have tried lot of combination but still i am not getting solution. please tell me any solution.Thank you in advance.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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/beyprod"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="#+id/toolbarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
</LinearLayout>
<!-- <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<FrameLayout
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/bottom_sheet_behavior" />
</LinearLayout>-->
<android.support.v4.widget.NestedScrollView
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_behavior="#string/bottom_sheet_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".retailerModule.cart.activity.AddressListActivity">
<ProgressBar
android:id="#+id/progress_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/relaLaySearch"
android:layout_gravity="center|top"
android:visibility="gone" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/confirmBtn"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
<TextView
android:id="#+id/addNewAddress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_gravity="right"
android:layout_marginTop="15dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="40dp"
android:background="#color/green"
android:gravity="center"
android:padding="10dp"
android:text="New Address"
android:textColor="#color/colorWhite" />
</LinearLayout>
<android.support.v7.widget.AppCompatButton
android:id="#+id/continueBtn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_gravity="right"
android:background="#color/color_blue"
android:gravity="center"
android:text="SAVE"
android:textColor="#color/colorWhite"
android:visibility="gone" />
</RelativeLayout>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</LinearLayout>
When i tried to run this line getting exception
NestedScrollView mBehavior = BottomSheetBehavior.from(bottom_sheet);

It tells you that you can only put a BottomSheetBehavior into a CoordinatorLayout.
So make CoordinatorLayout as your root layout and place it directly here (not in some nested views)

FrameLayout after ScrollView allways on bottom

I need to made layout that will contain ScrollView with some dynamic length text and Button in FrameLayout after(below). With long text all is okay, but when text is short button stuck right below bottom of ScrollView text part. I want a FrameLayout in the bottom of the screen when text is short and right below ScrollView text part when text long .
Can it be done?
My XML
<android.support.constraint.ConstraintLayout 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:context=".TeacherFullActivity"
tools:showIn="#layout/app_bar_teacher_full">
<ScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
layout="#layout/listview_element_teachers"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/job_title"
style="#style/TitleMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/teacher_job_title" />
<android.support.v7.widget.RecyclerView
android:id="#+id/job_dynamic"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/subject_title"
style="#style/TitleMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/teacher_subject_title" />
<android.support.v7.widget.RecyclerView
android:id="#+id/subject_dynamic"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/workPlace_title"
style="#style/TitleMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/teacher_workplace_title" />
<android.support.v7.widget.RecyclerView
android:id="#+id/workplace_dynamic"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:paddingLeft="35dp"
android:paddingTop="5dp"
android:paddingRight="35dp"
android:paddingBottom="5dp">
<Button
android:id="#+id/teacher_external_link"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/btn_rounded"
android:text="#string/open_link"
android:textAllCaps="false"
android:textColor="#android:color/white"
android:textSize="17sp"
android:textStyle="bold"
/>
</FrameLayout>
</LinearLayout>
</ScrollView>
</android.support.constraint.ConstraintLayout>

You can use the android:fillViewport attribute of ScrollView to accomplish this.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"/>
</FrameLayout>
</LinearLayout>
</ScrollView>
What this does is make it so that, in the case where the contents of the LinearLayout are not large enough to fill the screen, the LinearLayout is stretched to fill the screen anyway. That gives the FrameLayout room to grow (based on its layout_weight attribute), which in turn lets the Button float to the bottom of the screen (because of its layout_gravity attribute).
In cases where the contents of the LinearLayout are larger than the screen, no stretching happens. The button is pushed off-screen, but appears when you scroll down (with no space between it and the text).

You can try this code for your approach:
<android.support.constraint.ConstraintLayout 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:context=".TeacherFullActivity"
tools:showIn="#layout/app_bar_teacher_full">
<ScrollView
android:id="#+id/scrollview"
android:layout_width="0dp"
android:layout_height="0dp"
app:constraintTop_toTopOf="parent"
app:constraintStart_toStartOf="parent"
app:constraintEnd_toEndOf="parent"
app:constraintBottom_toTopOf="#id/frame">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
layout="#layout/listview_element_teachers"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/job_title"
style="#style/TitleMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/teacher_job_title" />
<android.support.v7.widget.RecyclerView
android:id="#+id/job_dynamic"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/subject_title"
style="#style/TitleMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/teacher_subject_title" />
<android.support.v7.widget.RecyclerView
android:id="#+id/subject_dynamic"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/workPlace_title"
style="#style/TitleMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/teacher_workplace_title" />
<android.support.v7.widget.RecyclerView
android:id="#+id/workplace_dynamic"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</LinearLayout>
</ScrollView>
<FrameLayout
android:id="#+id/frame"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:paddingLeft="35dp"
android:paddingTop="5dp"
android:paddingRight="35dp"
android:paddingBottom="5dp"
app:constraintTop_toBottomOf="#id/scrollview"
app:constraintStart_toStartOf="parent"
app:constraintEnd_toEndOf="parent"
app:constraintBottom_toBottomOf="parent">
<Button
android:id="#+id/teacher_external_link"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/btn_rounded"
android:text="#string/open_link"
android:textAllCaps="false"
android:textColor="#android:color/white"
android:textSize="17sp"
android:textStyle="bold"
/>
</FrameLayout>
</android.support.constraint.ConstraintLayout>
Explaination:
What i did was took FrameLayout containing Button out side of ScrollView so that it can always be at bottom of the Container.

Scrollview top and bottom

I'm building and android application using android studio and I'm using scroll view in my layout, but the problem is that the scroll view doesn't start after the action bar and leaves huge white space at the bottom (as you can see in the screenshots below).
and here's my code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="false"
android:background="#fefcf8"
android:orientation="vertical"
android:weightSum="1">
<FrameLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1">
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:layout_gravity="center"
android:orientation="vertical"
tools:layout_editor_absoluteX="8dp"
tools:layout_editor_absoluteY="0dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:padding="5dp"
android:orientation="vertical">
<ImageButton
android:id="#+id/info1"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_margin="2dp"
android:layout_weight="1"
android:adjustViewBounds="true"
android:background="#android:color/transparent"
android:scaleType="fitCenter"
android:src="#drawable/info1" />
</LinearLayout>
.
.
.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:padding="5dp"
android:orientation="vertical">
<ImageButton
android:id="#+id/info6"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_margin="2dp"
android:layout_weight="1"
android:adjustViewBounds="true"
android:background="#android:color/transparent"
android:scaleType="fitCenter"
android:src="#drawable/info6" />
</LinearLayout>
</LinearLayout>
</ScrollView>
</FrameLayout>
<android.support.design.widget.BottomNavigationView
android:id="#+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:background="#3a3c3a"
app:menu="#menu/navigation"
app:itemTextColor="#ffffff"/>
</LinearLayout>
As you can see my xml above, i didn't any padding or margin. Yet there's a white space at the bottom and the scroll view starts at the very top of the activity not after the action bar. How to solve this?

Try by putting this inside your ScrollView or FrameLayout containing ScrollView
<ScrollView
...
app:layout_behavior="#string/appbar_scrolling_view_behavior"
...>

How to use swipe refresh with recyclerivew

I have use swipe resfresh with recyclerivew. but I see one problem. I can't scroll my recyclerivew up. I can scroll recyclerview down normally but every time I try to scroll up it will not scroll it up it is work the function swift refresh how ever I am not scrol up to the top yet.
Here is my xml
<android.support.v4.widget.SwipeRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_marginBottom="-5dp"
android:id="#+id/swiperefresh"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/buslayout"
android:focusableInTouchMode="true"
>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="50dp"
android:layout_gravity="center"
android:gravity="center"
android:text="Loading..."
android:id="#+id/info"
android:visibility="visible"/>
<android.support.v7.widget.RecyclerView
android:id="#+id/business_recycle"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</android.support.v4.widget.SwipeRefreshLayout>

Try this:
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_marginBottom="-5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="50dp"
android:layout_gravity="center"
android:gravity="center"
android:text="Loading..."
android:id="#+id/info"
android:visibility="visible"/>
<android.support.v4.widget.SwipeRefreshLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/swiperefresh"
android:focusableInTouchMode="true"
>
<android.support.v7.widget.RecyclerView
android:id="#+id/business_recycle"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.v4.widget.SwipeRefreshLayout>
</FrameLayout>

Android Scrollview Height Dynamic Adjustment

I have a nestedScrollview inside a CoordinatorLayout.
Now, there are 5-6 views inside nestedScrollview and there visibilty will change depending on the data available via network.
The issue is that scrollview always takes the same height (total of all 5-6 views) and leaves a blank space at bottom when i hide visibility of any view. Could any one please tell me how I can readjust the height of the scrollview so there is no blank space at bottom of the scrollview.
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/MyAppbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:collapsedTitleGravity="center_horizontal"
app:expandedTitleGravity="center_horizontal"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<!--Some content here-->
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/nested_scroll_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
<include
android:id="#+id/profile_extra_details"
layout="#layout/profile_extra_details_layout" />
<LinearLayout
android:id="#+id/see_project_listing_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
<include layout="#layout/divider" />
<ViewSwitcher
android:id="#+id/work_switcher"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<include
android:id="#+id/see_project_listing"
layout="#layout/photos_with_heading" />
<TextView
android:id="#+id/txt_no_work_found"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:gravity="center"
android:text="There are no Design Boards"
/>
</ViewSwitcher>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
This is the NestedScrollview. Below is the profile_extra_details_layout. This the layout whose visibility is controlled based on data availability from network and also the type of user whose profile is being seen.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include layout="#layout/divider" />
<TextView
android:id="#+id/user_description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="#dimen/activity_horizontal_margin"
android:layout_marginRight="#dimen/activity_horizontal_margin"
android:visibility="gone" />
<LinearLayout
android:id="#+id/location_buget_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:gravity="center"
android:orientation="horizontal"
android:visibility="visible">
<LinearLayout
android:id="#+id/ll_budget_yearEstb"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:visibility="gone">
<ImageView
android:id="#+id/img_budget_yearEstb"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="center_horizontal"
android:src="#drawable/id_proejct_budget" />
<TextView
android:id="#+id/txt_budget_yearEstb"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_location"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical"
android:visibility="gone">
<ImageView
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_gravity="center_horizontal"
android:padding="5dp"
android:src="#drawable/id_project_city" />
<TextView
android:id="#+id/location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:padding="5dp"
android:text="Mumbai,India"
android:textStyle="bold" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/individual_firm_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:visibility="gone">
<ImageView
android:layout_width="#dimen/image_size_beside_text"
android:layout_height="#dimen/image_size_beside_text"
android:src="#drawable/id_expert_firm_ind" />
<TextView
android:id="#+id/individual_firm_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Firm/Individual" />
</LinearLayout>
<LinearLayout
android:id="#+id/awards_ll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:visibility="gone">
<ImageView
android:layout_width="#dimen/image_size_beside_text"
android:layout_height="#dimen/image_size_beside_text"
android:src="#drawable/id_expert_awards" />
<TextView
android:id="#+id/awards_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
</LinearLayout>
<LinearLayout
android:id="#+id/web_add_ll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:visibility="gone">
<ImageView
android:layout_width="#dimen/image_size_beside_text"
android:layout_height="#dimen/image_size_beside_text"
android:src="#drawable/id_seller_web" />
<TextView
android:id="#+id/web_add_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Abc.xyz" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_location_ho"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:visibility="gone">
<ImageView
android:layout_width="#dimen/image_size_beside_text"
android:layout_height="#dimen/image_size_beside_text"
android:src="#drawable/id_project_city" />
<TextView
android:id="#+id/location_ho_txt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Abc.xyz" />
</LinearLayout>
</LinearLayout>
Please let me know if I need to elaborate more anywhere.

This would help you:
when you hide your view use View.GONE , i think you are using View.INVISIBLE

Try to change nestedscrollview height to match_parent and the child linear layout height to wrap_content. After that according to you data change visibility of child layout of linear layout at run time.