Develop Reference

Scaling an ImageView when the soft keyboard opens

I'm creating a tabbed activity. As long as the first tab is selected, the soft keyboard should be visible. I achieved that by adding this line to my manifest file in the activity tag:
android:windowSoftInputMode="stateVisible|adjustResize"
As the keyboard opens, the space for the layout shrinks. The most space is occupated by an ImageView. I want it to shrink with the layout size to allow the other 2 views (which should remain the same size) to fit on the screen. However, although the soft input mode is set to adjustResize, the ImageView keeps its size after the keyboard opens. Here's a comparison of the current layout and the one I want to achieve (the ImageView is the red rectangle):
comparison
My fragment's layout code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".DataInputFragment"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitStart"
android:src="#drawable/image"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/input_label_text"/>
<namespace.InputEditText
android:id="#+id/input_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
<requestFocus/>
</namespace.InputEditText>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/submit"
</LinearLayout>
</RelativeLayout>
My activity:
<?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/main_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:orientation="vertical"
tools:context=".MainActivity">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="#style/TabLayout">
<android.support.design.widget.TabItem
android:id="#+id/tabItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tab_text_1" />
<android.support.design.widget.TabItem
android:id="#+id/tabItem2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tab_text_2" />
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</LinearLayout>
How to force the ImageView to resize according to the screen size to make all of the views fit on the screen?
[EDIT]: My attempt to create a ConstraintLayout, which didn't solve the problem (the ImageView still keeps its original size):
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
tools:context=".DataInputFragment">
<ImageView
android:id="#+id/img"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitStart"
android:src="#drawable/image"
android:adjustViewBounds="true"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/input_label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/input_label_text"
app:layout_constraintTop_toBottomOf="#id/img"/>
<namespace.InputEditText
android:id="#+id/input_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/input_label">
<requestFocus />
</namespace.InputEditText>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/submit"
app:layout_constraintTop_toBottomOf="#id/input_edit_text"/>
</android.support.constraint.ConstraintLayout>

I've created an Android Project from scratch on Android Studio 4.0, using the "Tabbed Activity" template and uploaded it to GitHub.
I've had no issues with the resize taking place when the activity is resized.
What Did I change?
In the manifest.xml I added android:windowSoftInputMode="adjustResize"
I modified the default layout for the fragment in the tab to include an ImageView (called imageToShrink) and an EditText (called editLayout).
I left the existing TextView untouched, except that since it's at the top, I made it the HEAD of the vertical Chain, and gave it a 0.0 BIAS to be aligned at the top, rather at the center.
When you tap on the cyan EditText at the bottom, the keyboard pops (I made it number only so it's even taller) and you can see how the image is re-drawn after its new size is recomputed.
This is how it looks when it opens: (beautiful color palette!)
And this is how it looks when I tap the "edit field" to pop the keyboard:

your ImageView should not have wrap_content attributes, because it will always have constant size and wont be able to resize automatically. I would suggest using ConstraintLayout and use app:layout_constraintDimensionRatio. Other option is use LinearLayout weight (not recommending).
Ant third option is to detect when keyboard is visible, when not with ViewTreeObserver.OnGlobalLayoutListener and do stuff programmaticaly.
Try this:
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".DataInputFragment">
<ImageView
android:id="#+id/img"
android:layout_width="match_parent"
android:layout_height="0dp"
android:adjustViewBounds="true"
android:scaleType="fitStart"
android:src="#drawable/image"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintDimensionRatio="3:1"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="#+id/input_label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/input_label_text"
app:layout_constraintTop_toBottomOf="#id/img" />
<EditText
android:id="#+id/input_edit_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/input_label">
<requestFocus />
</EditText>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/submit"
app:layout_constraintTop_toBottomOf="#id/input_edit_text" />
</android.support.constraint.ConstraintLayout>

How to get a whole screen in an activity to scroll when a scrollable recyclerView imakes up only half of the phone screen

I want my whole screen to scroll but only my recycler will scroll at the moment. This occurs despite all elements being placed in a linear layout inside a Scroll View.
Any ideas where the error is? Here's the relevant code.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
tools:context=".NoodleDetailActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="#+id/noodleImage"
android:layout_width="match_parent"
android:layout_height="200dp"
android:adjustViewBounds="false"
android:scaleType="centerCrop"
app:srcCompat="#mipmap/ic_launcher" />
<TextView
android:id="#+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/border_bottom"
android:fontFamily="sans-serif-smallcaps"
android:hapticFeedbackEnabled="false"
android:padding="30dp"
android:text="TextView"
android:textSize="18sp" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/extras_recycler"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:background="#F2F2F2"
android:padding="0dp" />
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
This is what it looks visually.
demo appearance

Found out: it seems best practice is to set the recyclerView to be the whole layout and make it contain multiple view types.
I won't be using a nested scroll view.

Recycler view taking entire screen.Not displaying my UI element above it

I'm trying to add an Imageview above my recycler view but the recycler view ends up taking the whole screen and doesn't display my image view.
<?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/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
tools:context=".AccountFragment">
<android.support.v7.widget.RecyclerView
android:id="#+id/blogListView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/imageView">
</android.support.v7.widget.RecyclerView>
<ImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/acc"
tools:layout_editor_absoluteX="146dp"
tools:layout_editor_absoluteY="86dp" />
</RelativeLayout>

Add this attribute to the ImageView:
android:layout_alignParentTop="true"
so it is at the top of the parent layout.
If you think that these attributes:
tools:layout_editor_absoluteX="146dp"
tools:layout_editor_absoluteY="86dp"
affect the position of the ImageView, then you are wrong.
Any attribute from the tools namespace is valid only at design time.
So you might as well remove them.
Also you might want to center the ImageView horizontally:
android:layout_centerHorizontal="true"

hi try to set this as i checked its working
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/icon_play" />
<android.support.v7.widget.RecyclerView
android:id="#+id/blogListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/imageView"></android.support.v7.widget.RecyclerView>
</RelativeLayout>

A RelativeLayout places every element at the start of the screen (0,0). In your case the ImageView is behind the RecyclerView. If you need to display RecyclerView below ImageView, opt for LinearLayout instead, with orientation set to vertical.
<?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/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:orientation="vertical"
tools:context=".AccountFragment">
<ImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/acc" />
<android.support.v7.widget.RecyclerView
android:id="#+id/blogListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/imageView">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>
Try the above code and let me know if it works.

GridView item height is mismatched with other

I am using a grid view. It shows issue in some devices. One item of the grid view looks shorter in height than others.
It looks like this in some devices, and in some its fine.
Layout :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:background="#android:color/white"
android:layout_height="match_parent">
</RelativeLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.admin.fueloneApp.MainDriver"
tools:showIn="#layout/app_bar_main"
android:weightSum="8">
<TextView
android:id="#+id/main_welcome"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="#dimen/dimen_20dp"
android:text="#string/welcome"
android:textColor="#color/colorPrimary"
android:textStyle="bold" />
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gridviewMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="#dimen/dimen_40dp"
android:layout_marginLeft="#dimen/dimen_40dp"
android:layout_marginRight="#dimen/dimen_40dp"
android:columnWidth="80dp"
android:horizontalSpacing="#dimen/dimen_10dp"
android:numColumns="2"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp"></GridView>
</LinearLayout>
</ScrollView>
<TextView
android:id="#+id/textView20"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_centerInParent="false"
android:text="For Any Queries Related To Mobile App Click On Service Request"
android:textAlignment="center" />
</RelativeLayout>
Item layout
EDIT : Added item layout of the grid view.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/single_grid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimary1"
android:orientation="vertical">
<ImageView
android:id="#+id/gris_img"
android:layout_gravity="center"
android:layout_width="80dp"
android:scaleType="fitXY"
android:layout_height="100dp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/grid_cat"
android:textSize="15sp"
android:textColor="#color/divider_color"
android:gravity="center"/>
</LinearLayout>
How can I manage the height of each item? What is the solution for this? Please help. thank you...

Gridview is having a tendency to adjust the height of all element with the tallest element in all. Hence this behaviour you are seeing.You can use StaggeredGridView.

i think your grid layout cell height is wrap_content. this problem same occur with me . change your layout height wrap_content to match_parent.
android:layout_height="match_parent"
for better solution please update your grid view item layout cell here.

Add Textview property :
android:maxLines="1"
android:singleLine="true"
if text not visible single line, you need change textview to autosizing-textview
enter link description here

why cannot i see a textView above another view in relative layout?

I have this xml:
<?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"
android:orientation="vertical"
android:paddingLeft="8dp"
android:paddingRight="8dp" >
<TextView
android:id="#+id/errorMsg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/pointsText"
android:visibility="gone"/>
<TextView
android:id="#+id/pointsText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/offers_list"
android:text="you have 100 points"
android:visibility="visible"/>
<ListView
android:id="#+id/offers_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawSelectorOnTop="false"
android:dividerHeight="0dp"
android:divider="#00000000"/>
</RelativeLayout>
Yet I cannot see pointsText in my eclipse graphical previewer.
What am I missing?

You have
android:layout_above="#+id/offers_list"
for your TextView but you don't have any positioning for your ListView. Since RelativeLayouts place their children at the top-left by default, your ListView would be at the top and there would be nowhere above it to place your TextView.
Try removing that property from your TextView and add
android:layout_below="#id/pointsText"
on your ListView.
I just tested this and it does work. I can see the pointsText TextView above the list. So, you will want to do something different with your error TextView or you will quite possibly have the same issue with that when you want to change its visibility.
A bit off-topic
RelativeLayout doesn't have an orientation property so that doesn't do you any good but doesn't do you any real harm either.

When you use relative layouts, layout elements lay upon each other. To prevent that you should place element Relatively to other layouts. make your code like this.
<?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"
android:orientation="vertical"
android:paddingLeft="8dp"
android:paddingRight="8dp" >
<TextView
android:id="#+id/errorMsg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/pointsText"
android:visibility="gone"/>
<TextView
android:id="#+id/pointsText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/offers_list"
android:text="you have 100 points"
android:visibility="visible"
android:layout_below="#+id/errorMsg"/>
<ListView
android:id="#+id/offers_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawSelectorOnTop="false"
android:dividerHeight="0dp"
android:divider="#00000000"
android:layout_below="#+id/pointsText"/>
</RelativeLayout>
Now you will be able to see your all layouts

try this:
<?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"
android:paddingLeft="8dp"
android:paddingRight="8dp" >
<LinearLayout
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/errorMsg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone"/>
<TextView
android:id="#+id/pointsText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="you have 100 points"
android:visibility="visible"/>
</LinearLayout>
<ListView
android:id="#+id/offers_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/linearLayout1"
android:divider="#00000000"
android:dividerHeight="0dp"
android:drawSelectorOnTop="false" />
</RelativeLayout>

If this is a fragment inside an activity, you may want to check the nesting of say, the AppBarLayout and the layout into which you add the fragment