Develop Reference

How to Set a Button at a fixed position even when respective Activity has ScrollView

Is there a way to use some non scrollable view when the activity has ScrollView component?
I want that my button behaves similar to the button in the question below, I want it fixed on the bottom of the UI too:
how to set a button at a fixed location on the bottom of UI?
Here's my layout code:
<?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">
<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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent ">
<FrameLayout
android:id="#+id/map_frameview"
android:layout_width="match_parent"
android:layout_height="200dp">
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="20dp">
</LinearLayout>
</LinearLayout>
</ScrollView>
Thanks in advance!

The link you have attached in your question shows how you can do it. You can use RelativeLayout for this. The idea is, you need to tell a button to stay on bottom of the screen & tell the scrollview to stay above the Button along with it's scrollable content like:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/btnMy"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"/>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/btnMy">
<LinearLayout
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:layout_above="#id/btnMy"
android:orientation="vertical">
<FrameLayout
android:id="#+id/map_frameview"
android:layout_width="match_parent"
android:layout_height="200dp">
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="20dp">
</LinearLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>

how can i get a image background with white contain space on it as shown below in screenshot

Here you can see that there is a background and above it there is a white layer on which contain are given. screenshot is of a website but i want to give that effect on my app. any help will be of great use.

You can do it like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".activity.MainActivity">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/yourBackgroudImage"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:bacground="#color/white"
android:layout_margin="20dp">
<!--your code inside white backgroud layout goes here-->
</LinearLayout>
</LinearLayout>

Just use a RelativeLayout which helps you to stack your views above each other,then provide a margin to the top layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="wrap_content">
<ImageView
android:src="#drawable/backgroundimage"
android:scaleType="centerCrop"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:layout_margin="20dp"
android:background="#ffffff"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--Add Data here as required-->
</LinearLayout>
</RelativeLayout>

Hiding View in Fragment on Scroll of Other View

I am using Navigation drawer activity in content_main there is one linear layout which will be inflate with fragment.
content_main.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:id="#+id/content_home"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="net.techdesire.khabargujarat.HomeActivity"
tools:showIn="#layout/app_bar_home">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragment_container"/>
</RelativeLayout>
fragment_home.xml
<android.support.percent.PercentRelativeLayout
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="fragment.HomeFragment">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
app:layout_heightPercent="40%"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="5dp"
app:layout_heightPercent="60%"
android:layout_below="#+id/viewpager">
<TextView
android:id="#+id/about"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="#string/about_khijadiya"
android:textAppearance="#style/TextAppearance.AppCompat.Large"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/about"
android:text="#string/dummy"
android:textAppearance="#style/TextAppearance.AppCompat.Medium"/>
</RelativeLayout>
</android.support.percent.PercentRelativeLayout>
I have large content in textview named about. I want to make it scrollable,like in image.First scroll relativelayout to full screen and if content of about is still overflow then make only about textview scrollable. When scroll reach to top and if user swipe down from there then re-display viewpager.

I think, your requirement is collapsing the view while scrolling.
So you can use
"android.support.design.widget.CollapsingToolbarLayout".
It is implemented in material design.
You can refer this link:
http://www.androidhive.info/2016/05/android-working-with-card-view-and-recycler-view/

Fragment's content above Tab's text in TabLayout

I'm using TabLayout and I attach two tabs.
tabLayout.addTab(tabLayout.newTab().setText("Featured"));
tabLayout.addTab(tabLayout.newTab().setText("Filter"));
Then onTabSelected() I display the fragment I want according to which tab user selected.
The layout of my Activity is :
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/ll_container"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<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"/>
<FrameLayout
android:id="#+id/fl_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
and the layout of the fragments is just a TextView in a LinearLayout :
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="Projects List Fragment"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
But the result I get is the following :
as you can see the content of the fragment overlaps Tab's text when it should appear underneath.
Thanks

Finally, I found alternative solution for this problem.
You can give top padding on your each Tab fragment's layout.
Eg,
android:paddingTop="?attr/actionBarSize"
For instance, my first tab xml looks like below:
<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="wrap_content"
android:paddingTop="?attr/actionBarSize"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.upgautam.uddhav.productassignment.uicontrollers.ProductListFragment">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/product_list_string" />
</android.support.design.widget.CoordinatorLayout>
Now, the screen looks like below:

Adding fab Button at the junction of two ViewPager widgets

I have implemented a navigation drawer. In the FrameLayout of navigation drawer I have added a fragment which contains 2 ViewPagers taking exactly half the screen each. Now I want to add a FAB button at the junction of these two viewpagers as shown here.
In my case both viewpagers occupy exactly half screen which is slightly different from what is shown in image. Can somebody help me in getting the FAB at the junction.
The code for the fragment containing the 2 viewpagers is below:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/shirt_section"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp" />
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pant_section"
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp" />
</LinearLayout>

You could enclose your linear layout into FrameLayout and add your button like this:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
</LinearLayout>
<ImageButton
android:layout_gravity="center_vertical|right"
...
/>
</FrameLayout>