android - Activity with fragments does not resize when the keyboard opens

Question

In my main activity there is a RelativeLayout that has 2 childs:

• An ImageView which serves as the background
• A LinearLayout that has 2 fragment containers

activity_main.xml

<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:layout_gravity="bottom"
    tools:context="${packageName}.${activityClass}">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:adjustViewBounds="true"
        android:baselineAlignBottom="false"
        android:scaleType="fitStart"
        android:src="@drawable/bg_image" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingTop="?android:attr/actionBarSize"
        android:layout_alignParentBottom="true">

        <LinearLayout
            android:id="@+id/ContainerA"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:orientation="vertical" />
        
        <LinearLayout
            android:id="@+id/ContainerB"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/background_gray"
            android:orientation="vertical" />

    </LinearLayout>
</RelativeLayout>

Container A simply shows a fragment that doesn't change.
However, Container B holds a fragment that does change depending on user clicks.

Container B changes in 2 ways:

• It can expand (from a height of about 70% to full height).
• It changes fragments.

One of the fragments Container B can hold is a form, which contains EditTexts and other views.

My problem is that I can't get the activity to resize when the keyboard is open.
I set adjustResize in the manifest file and my theme is not a fullscreen theme (it is apparently a cause for this problem). I also tried to edit the views, add ScrollViews but absolutely nothing worked.

The theme I'm using for this activity is the light theme with the dark actionbar from the AppCompat library. I only edited the theme to allow an overlay actionbar. This is not the problem as I've already tried removing those edits to no avail.

Here's a link to the form layout

TL;DR adjustResize / adjustPan do not work for me. Searched, tried various solutions, nothing worked. My question is; what is the cause for this in my case?

Update: AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" ...>

    <uses-sdk android:minSdkVersion="11" android:targetSdkVersion="19" />

    <application ... android:theme="@style/AppTheme">
        <activity android:name=".SplashScreenActivity"
            android:label="@string/app_name"
            android:screenOrientation="portrait"
            android:theme="@android:style/Theme.Black.NoTitleBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".MainActivity"
            android:configChanges="keyboardHidden|screenSize" android:label="@string/app_name"
            android:screenOrientation="portrait" android:theme="@style/OverlayActionBarTheme"
            android:windowSoftInputMode="adjustResize"  />
        <activity android:name=".SettingsActivity"
            android:label="@string/title_activity_settings"
            android:parentActivityName=".MainActivity"
            android:windowSoftInputMode="adjustResize">
            <meta-data android:name="android.support.PARENT_ACTIVITY"
                android:value=".MainActivity" />
        </activity>
    </application>

</manifest>

Update 2:
I created a completely new app, added my form layout as the main layout, and tested whether the problem was in the layout itself. Turns out it is, as even on this newly created app it doesn't seem to resize.

As stated above, the link to the layout can be found Here

Update 3: I managed to make it work on the new application by surrounding the whole layout with a ScrollView. I couldn't replicate the same effect in the original app for some reason... still trying to figure out why.

Answer 1

When the soft keyboard appears on the screen, the amount of space available for the application's UI reduces. The system makes decision on how to organize the available space between the application's UI and soft keyboard.

• If the window content contains ListView, ScrollView, the application's window is resized provided all the content is visible.
• If re-sizing is not feasible, pan and scan approach is used, which simply involves scrolling the application's window so that the currently focused view is visible.

Since your layout does not contain any ListView, ScrollView, re-sizing is ruled out.

The window's root view is a FrameLayout to which you were originally adding LinearLayout. Since LinearLayout does not support scrolling, pan and scan approach is also ruled out. Hence wrapping the layout inside ScrollView solves the scrolling issue.

You can refer Android Developers blog for more details.

Update 1:

OP was able to solve the issue, as indicated in this answer. The issue was happening due to one fragment overlaying another fragment after animation and the parent of these Fragment's was a LinearLayout. For overlay purpose, you need to use RelativeLayout or FrameLayout only.