Develop Reference

Why Fix Button in Bottom in Coordinator Layout scroll with recycle view in android

i want to have a recycle view and a fix button in bottom of that.
i use coordinator layout and everything is ok but when scroll of recycle view ended, the fix button move a little with recycle view.
what is the problem??
This is 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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/filter_frame"
android:orientation="vertical">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/shopsList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#id/complete_info_order"
android:layout_marginBottom="#dimen/_70sdp"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<Button
android:id="#+id/complete_info_order"
android:layout_width="match_parent"
android:layout_height="#dimen/_40sdp"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:layout_marginLeft="#dimen/_20sdp"
android:layout_marginTop="#dimen/_30sdp"
android:layout_marginRight="#dimen/_20sdp"
android:layout_marginBottom="#dimen/_60sdp"
android:background="#drawable/login_button_frame"
android:gravity="center"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
what should i do to button don't move with recycle view??
Thanks a lot...

Try this instead:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/shopsList"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<Button
android:id="#+id/complete_info_order"
android:text="Button"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_width="wrap_content"
android:layout_height="40dp"/>
</RelativeLayout>

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"

LinearLayout child pushes other views

My activity's main layout is a LinearLayout. It has two children as an example. A RelativeLayout and a Button. The width and height of RelativeLayout are set to match_parent and the Button, match_parent and wrap_content. Unfortunately, RelativeLayout pushes the button below until it is not visible.
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Why is this happening? I tried a tweak for the RelativeLayout which is changing the height to 0dp and weight to 1. It does make the Button visible but I am not sure if this is advisable as I only changed the height and weight of RelativeLayout.

Try this
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="match_parent">
<LinearLayout 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:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</ScrollView>
OR
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="match_parent">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_above="#+id/btn"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:src="#drawable/disha"
android:layout_height="match_parent" />
</RelativeLayout>
<Button
android:id="#+id/btn"
android:layout_width="match_parent"
android:layout_margin="10dp"
android:text="NIlu"
android:layout_alignParentBottom="true"
android:layout_height="wrap_content" />
</RelativeLayout>
</ScrollView>

LinearLayout is either Vertical or Horizontal. Your first child which is RelativeLayout is matchParent then it will cover whole Outer layout .
Solution can be multiple its depends upon where exactly you want to place your Button . One way is .
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_above="#+id/btn"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<Button
android:id="#+id/btn"
android:layout_width="match_parent"
android:layout_margin="10dp"
android:layout_alignParentBottom="true"
android:layout_height="wrap_content" />
</RelativeLayout>

Change your Code Like
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<Button
android:text="#string/app_name"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Worked Foe me..
you should Give android:layout_weight="1" to relative Layout

//try this
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="match_parent"
android:layout_height="200dp" />
</RelativeLayout>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>

this seems to work just fine.
I tried a tweak for the RelativeLayout which is changing the height to
0dp and weight to 1
the code look like this:
<?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">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</RelativeLayout>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>

In your layout, RelativeLayout is the first child of your LinearLayout. Since, you have set the height and width to match_parent it takes up all available space pushing the button out of the view.
When you set the RelativeLayout height to 0dp and weight to 1, LinearLayout first lays out all children based on the dimensions specified, and then distributes the remaining space based on the weight. In this case, the relative layout is 0dp, so it takes no space in first pass, and the button takes up space based on its onMeasure (lets say 100dp). The remaining space is now given to RelativeLayout because its weight is set to 1. Refer to the LinearLayout documentation for more details here.
You should consider using a RelativeLayout/ConstraintLayout as your root element.

android layout issue with framelayout

I'm trying to add the image view but when I do it has so much space between the top and bottom of the image. I'm using a bottom navigation with fragments. I would like to make the image close to the top with the space. What am I doing wrong with this layout?
Main Activity
<?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:design="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.android.gershpark.MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/main_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:contentDescription="main image"
android:src="#drawable/fb_img_1497698892826" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/frame_layout"
android:layout_below="#id/main_image"
/>
<View
android:id="#+id/view"
android:layout_width="match_parent"
android:layout_height="8dp"
android:background="#drawable/shadow"
android:layout_above="#+id/bot_nav">
</View>
<android.support.design.widget.BottomNavigationView
android:id="#+id/bot_nav"
android:layout_gravity="bottom"
android:layout_width="match_parent"
android:layout_alignParentBottom="true"
android:layout_height="wrap_content"
android:background="#android:color/holo_blue_light"
design:itemIconTint='#f8f8f8'
design:menu='#menu/bot_menu'
/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
Home Fragment
<FrameLayout 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="com.example.android.gershpark.HomeFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Home"/>
</FrameLayout>

Looks like by adding the following it removed the spacing that was there.
android:adjustViewBounds="true"

Landscape imageview overlap toolbar and statusbar

I have an imageview which is displayed in center of the screen. In portrait mode it displays fine but when i rotate screen in horizontal mode then imageview is opelapping my toolbar and status bar like in screenshot attached below. I tried couple of settings but it didn't change anything. I tired below toolbar option but it will attach imagview after toolbar but i need to display imageview in center.So I need a help to fix this laypout.Here is my layout xml code.
Imageview layout:
<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"
tools:context=".DetailActivity"
>
<include android:id="#+id/toolbar"
layout="#layout/toolbar"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:scaleType="centerInside"
android:adjustViewBounds="true"
android:transitionName="photo_hero"
android:id="#+id/image"
/>
</RelativeLayout>
toobal layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:theme="#style/ThemeOverlay.AppCompat.Dark" >
</android.support.v7.widget.Toolbar>
screenshot:
http://s9.postimg.org/6lyxbaq27/landscape_problem.png
http://s9.postimg.org/n8ghkdizz/landscape_problem_2.png

Put this:
android:layout_below="#+id/toolbar"
inside of your <ImageView> tag.
It should look like:
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbar"
android:layout_centerInParent="true"
android:scaleType="centerInside"
android:adjustViewBounds="true"
android:transitionName="photo_hero"
android:id="#+id/image"
/>

Instead of relative layout try to use Frame Layout like:-
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/main_parent_view"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:scaleType="centerInside"
android:adjustViewBounds="true"
android:transitionName="photo_hero"
android:id="#+id/image"
/>
</LinearLayout>
<include layout="#layout/toolbar"/>

As Viktor suggested. I used linearlayout with orientation vertical and with few parameter changes in my imageview.Here is the final code:
<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"
tools:context=".DetailActivity"
android:orientation="vertical"
>
<include android:id="#+id/toolbar"
layout="#layout/toolbar"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="centerInside"
android:id="#+id/image"
android:layout_gravity="center_horizontal"
/>
</LinearLayout>