Develop Reference

Relative Layout inside Card View is not filling the parent even after giving match_parent

I have a cardView layout as below. I have used Stetho to inspect layout in chrome. I could see that Linear Layout is filling the screen width. However, relative Layout is not filling the parent.
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/card_view_show_card"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:clickable="true"
android:elevation="100dp"
android:focusable="true"
android:foreground="?android:attr/selectableItemBackground">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:id="#+id/image_layout_show_card"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/image_view_show_card"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY" />
<View
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
</RelativeLayout>
</LinearLayout>
</android.support.v7.widget.CardView>

Relative layout fills the parent. Try applying different for the layouts to prove it. Something like this...
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#3367bb"
android:orientation="vertical">
<RelativeLayout
android:id="#+id/image_layout_show_card"
android:layout_width="match_parent"
android:background="#000000"
android:layout_height="wrap_content">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/image_view_show_card"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY" />
<View
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
</RelativeLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
You will see that the complete layout becomes black, that means it covers the parent.
If you remove background color of relative layout, you will get to see blue color of linear layout.
If the issue is something else, please ask a new question

The solution is to add this inside of your CardView:
app:cardPreventCornerOverlap="false"

Android Linear Layout weight and soft keyboard issue

I'm trying to achieve the following view in a chat app. There are basically two states one with the soft touch keyboard showing and one without.
So this is my initial state without the keyboard showing.
This is what happens when the keyboard shows up.
This is what i'm trying to achieve.
Note
I'm current using "adjust-resize" as the windowSoftInputMode. I know using "adjust-pan" will fix the issue, but with "adjust-pan" there are 2 problems :
The toolbar also moves up making space for the edit-text and keyboard.
The editText gets partly covered by the keyboard.
A layout experts help is needed here!
Thanks in advance.
Edit:
This is what my XML looks like:
<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">
<LinearLayout
android:id="#+id/view_group_toolbar"
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="#color/colorPrimaryDark"
android:elevation="4dip" >
<!-- Toolbar stuff -->
</android.support.v7.widget.Toolbar>
</LinearLayout>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottom_bar"
android:layout_below="#+id/view_group_toolbar"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.6">
<include
layout="#layout/layout_that_covers_60%_of_the_screen (This is not my actual layout name :/ using it for understandability)"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<LinearLayout
android:id="#+id/view_group_recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.4"
android:gravity="center_vertical">
<include
layout="#layout/layout_that_covers_40%_of_the_screen"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:id="#+id/bottom_bar"
android:layout_width="match_parent"
android:layout_height="60dip"
android:layout_alignParentBottom="true"
android:gravity="bottom"
android:padding="8dip" >
<!-- This is where my edit text resides -->
</RelativeLayout>
</RelativeLayout>

So here is what I think you should do,
use
windowSoftInputMode="adjustResize" - The activity's main window is always resized to make room for the soft keyboard on screen. Also adjustResize keeps the ToolBar on top.
Try adding both your LinearLayouts inside a NestedScrollView. The reason I say this is because your NestedScrollView contents can scroll up.
I think your Layout will look like this- .
<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">
<LinearLayout
android:id="#+id/view_group_toolbar"
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="#color/colorPrimaryDark"
android:elevation="4dip" >
<!-- Toolbar stuff -->
</android.support.v7.widget.Toolbar>
</LinearLayout>
<NestedScrollView
android:layout_above="#+id/bottom_bar"
android:layout_below="#+id/view_group_toolbar">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.6">
<include
layout="#layout/layout_that_covers_60%_of_the_screen (This is not my actual layout name :/ using it for understandability)"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<LinearLayout
android:id="#+id/view_group_recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.4"
android:gravity="center_vertical">
<include
layout="#layout/layout_that_covers_40%_of_the_screen"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</LinearLayout>
</NestedScrollView>
<RelativeLayout
android:id="#+id/bottom_bar"
android:layout_width="match_parent"
android:layout_height="60dip"
android:layout_alignParentBottom="true"
android:gravity="bottom"
android:padding="8dip" >
<!-- This is where my edit text resides -->
</RelativeLayout>
Let me know if this works for you.
EDIT 1:
If you have a RecyclerView inside your layouts, you may need to set this attribute for smooth scroll -
recyclerView.setNestedScrollingEnabled(false);

What is the best way to scale down ViewPager

I have more than one Fragment in Viewpager ,on long press I want to scale down the Viewpager in the middle of screen as shown in below image. I want to show All fragments in Viewpager like android OS on Home screen. I am doing this by using library,
compile 'com.pixplicity.multiviewpager:library:1.0'
Here is xml file,
<com.pixplicity.multiviewpager.MultiViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bott_sidemenu"
app:matchChildWidth="#+id/vg" />
Here is child layout,
<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"
tools:context="${relativePackage}.${activityClass}" >
<FrameLayout
android:id="#+id/vg"
android:layout_width="200dp"
android:layout_height="match_parent"
android:layout_centerInParent="true" >
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:background="#drawable/bg_page"
android:scaleType="centerInside"
android:src="#drawable/im_pixplicity"
tools:ignore="ContentDescription" />
</FrameLayout>
</RelativeLayout>
But all item size does not scale down inside the Viewpager Fragment. Is there a way to so way? Suggestion will be appreciated.

ScrollView next to static Layout Element in landscape View

I am trying to divide my fragment UI into two sections, the left half will be a static Image View and the right half will be a scrolling view to show a dynamic list. I have the following layout
`
<android.support.design.widget.AppBarLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|enterAlways"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:id="#+id/appBarLayout">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#color/primaryText">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="fill_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/primary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<LinearLayout
android:id="#+id/image_preview"
android:layout_below="#id/toolbar"
android:layout_width="wrap_content"
android:layout_height="fill_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="#50000000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent" />
</LinearLayout>
<ScrollView
android:id="#+id/scroll_view"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_below="#id/toolbar"
android:layout_toEndOf="#id/image_preview">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</RelativeLayout>
</android.support.design.widget.AppBarLayout>
`
The problem is that I cant get the ScrollView to scroll, even setting the height programmatically has no effect and the scrollview only shows list items that fit the screen

Looks like you misunderstood what ListView is.
What I see is you are trying to use ListView as a list item while ListView is like a LinearLayout with a Scroll.
Take a look at these two links:
Android documentation
Example

Android layout_above does not work on API 21

I have a RelativeLayout that contains 3 children (LinearLayout) :
one at the top.
one at the bottom.
and one between the 2 last views.
The code i use for it is :
<RelativeLayout 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:background="#color/white"
tools:context="fr.caudoux.onlinegames.activities.GameMainFragment">
<LinearLayout
android:orientation="vertical"
android:background="#ff44f0c3"
android:layout_alignParentTop="true"
android:id="#+id/game_main_actionbar"
android:layout_width="match_parent"
android:layout_height="50dp">
</LinearLayout>
<LinearLayout
android:background="#F01234"
android:orientation="vertical"
android:id="#+id/game_main_top_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/game_main_actionbar"
android:layout_above="#+id/game_main_chat_container">
</LinearLayout>
<LinearLayout
android:background="#ff2c3ff0"
android:layout_alignParentBottom="true"
android:orientation="vertical"
android:id="#id/game_main_chat_container"
android:layout_marginBottom="70dp"
android:layout_width="match_parent"
android:layout_height="50dp">
</LinearLayout>
</RelativeLayout>
Since the api 21 the attribut 'android:layout_above' is not working : the second LinearLayout take all the space below the first one, and the third LinearLayout is over the second.
On api lower than 21 it works : the second part take only the space between the first and the third Linearlayout.
Does anyone known why it is not working and hos to do ?
Thanks

Change the ordering to have your top and bottom view declared before the view that is in between the two:
<RelativeLayout 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:background="#color/white"
tools:context="fr.caudoux.onlinegames.activities.GameMainFragment">
<LinearLayout
android:orientation="vertical"
android:background="#ff44f0c3"
android:layout_alignParentTop="true"
android:id="#+id/game_main_actionbar"
android:layout_width="match_parent"
android:layout_height="50dp">
</LinearLayout>
<LinearLayout
android:background="#ff2c3ff0"
android:layout_alignParentBottom="true"
android:orientation="vertical"
android:id="#id/game_main_chat_container"
android:layout_marginBottom="70dp"
android:layout_width="match_parent"
android:layout_height="50dp">
</LinearLayout>
<LinearLayout
android:background="#F01234"
android:orientation="vertical"
android:id="#+id/game_main_top_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/game_main_actionbar"
android:layout_above="#+id/game_main_chat_container">
</LinearLayout>
</RelativeLayout>
As mentioned, this same layout is easier to do as a LinearLayout, which specializes in stacked elements:
<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:background="#color/white"
android:orientation="vertical"
tools:context="fr.caudoux.onlinegames.activities.GameMainFragment">
<LinearLayout
android:orientation="vertical"
android:background="#ff44f0c3"
android:id="#+id/game_main_actionbar"
android:layout_width="match_parent"
android:layout_height="50dp">
</LinearLayout>
<LinearLayout
android:background="#F01234"
android:orientation="vertical"
android:id="#+id/game_main_top_container"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
</LinearLayout>
<LinearLayout
android:background="#ff2c3ff0"
android:orientation="vertical"
android:id="#id/game_main_chat_container"
android:layout_marginBottom="70dp"
android:layout_width="match_parent"
android:layout_height="50dp">
</LinearLayout>
</LinearLayout>
Note how only the middle element (the element that needs to fill the remaining space) has a layout_weight on it. This ensures that all remaining space is allocated to that view while the other views are of fixed height.

You cannot have both above and below set in one view. Use below on second view and then below again on last view.