Move Layout When Keyboard Shown (Avoid Keyboard Overlap EditText)

adjustPan: The activity's main window is not resized to make room for the soft keyboard. Rather, the contents of the window are automatically panned so that the current focus is never obscured by the keyboard and users can always see what they are typing. This is generally less desirable than resizing, because the user may need to close the soft keyboard to get at and interact with obscured parts of the window.
adjustResize: The activity's main window is always resized to make room for the soft keyboard on screen.

You can set windowSoftInputMode by editing AndroidManifest.xml.

<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
    <application ...>
        <activity
            android:name=".TestInputActivity"
            android:label="@string/title_activity_test_input"
            android:windowSoftInputMode="adjustResize"
            android:theme="@style/AppTheme.NoActionBar">
        </activity>
    </application>
</manifest>

Basic Activity

Create a Basic Activity using Android Studio (File -> New -> Activity -> Basic Activity). Add EditText at the bottom and a large TextView at the top (large TextView required to observe the effect of windowSoftInputMode).

I believe the default mode is adjustPan, where the top portion of the activity (including Toolbar/Appbar, and our large TextView at top) is push offscreen to make way for the keybaord. The EditText shall be pushed to above the keyboard.

If you set android:windowSoftInputMode="adjustResize", the top portion of the activity (including Toolbar/Appbar, and our large TextView at top) is maintained. The EditText shall be pushed to above the keyboard.

Basic Activity windowSoftInputMode

activity.xml

<?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:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".TestInputActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_test_input" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        app:srcCompat="@android:drawable/ic_dialog_email" />

</android.support.design.widget.CoordinatorLayout>

content.xml

<?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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".TestInputActivity"
    tools:showIn="@layout/activity_test_input">

    <EditText
        android:id="@+id/editText01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:ems="10"
        android:hint="Text 01"
        app:layout_constraintBottom_toTopOf="@+id/editText02"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <EditText
        android:id="@+id/editText02"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:ems="10"
        android:hint="Text 02"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:text="Hello"
        android:textSize="144sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

Scrolling Activity

Create a Scrolling Activity using Android Studio (File -> New -> Activity -> Scrolling). Add a LinearLayout in NestedScrollView, set android:orientation="vertical" and add 8 EditText into LinearLayout.

In default mode adjustPan, the top portion of the activity (Toolbar/Appbar) is push offscreen as usual with EditText pushed to above the keyboard. When you focus on EditText No 7, it is impossible to scroll to EditText No 8 (which is covered by the Keyboard). The only way to focus EditText No 8 is to hide the keyboard, scroll down and click EditText No 8. You can scroll up without hiding the keyboard.

If you set android:windowSoftInputMode="adjustResize", the top portion of the activity (Toolbar/Appbar) is maintained with EditText pushed to above the keyboard. When you focus on EditText No 7, it is still possible to scroll up and down (focus on EditText No 8) without the need to hide the keyboard.

NOTE: by default you shall notice the EditText is covered by Keyboard (rathar than showing above the Keyboard) when you use adjustResize. It is because CoordinatorLayout android:fitsSystemWindows="true". You need to set fitsSystemWindows="false" (for CoordinatorLayout only) for adjustResize to work properly.

Scrolling Activity windowSoftInputMode

activity.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- change CoordinatorLayout.fitsSystemWindows="false" if use adjustResize -->
<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="match_parent"
    android:fitsSystemWindows="false"
    tools:context=".TestScrollingActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="@dimen/app_bar_height"
        android:fitsSystemWindows="true"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/toolbar_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:contentScrim="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|exitUntilCollapsed"
            app:toolbarId="@+id/toolbar">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/AppTheme.PopupOverlay" />

        </android.support.design.widget.CollapsingToolbarLayout>
    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_test_scrolling" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/fab_margin"
        app:layout_anchor="@id/app_bar"
        app:layout_anchorGravity="bottom|end"
        app:srcCompat="@android:drawable/ic_dialog_email" />

</android.support.design.widget.CoordinatorLayout>

content.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView 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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".TestScrollingActivity"
    tools:showIn="@layout/activity_test_scrolling">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 01" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 02" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 03" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 04" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 05" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 06" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 07" />

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:text="Text 08" />
    </LinearLayout>



</android.support.v4.widget.NestedScrollView>