Android adjustpan not working after the first time

Question

My problem: starting from the second time the software keyboard is shown on the screen, it entirely hides my EditText.

Attribute android:windowSoftInputMode="adjustPan" has been specified in the AndroidManifest.xml, but it works only the first time.

I have the following layout:

 <?xml version="1.0" encoding="utf-8"?>
    <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="fill_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="464dp"
        android:gravity="top"
        android:orientation="vertical"
        android:paddingLeft="16dp"
        android:paddingRight="16dp" >

        <ListView
            android:id="@+id/list"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="10"
            android:background="#E3E3E2"
            android:gravity="top" />

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

            <EditText
                android:id="@+id/addListText"
                android:layout_width="0dp"
                android:layout_height="48dp"
                android:layout_weight="10"
                android:contentDescription="@string/addItemContentDescription"
                android:gravity="bottom|center_horizontal"
                android:inputType="textLongMessage"
                android:textColor="#E3E3E2"
                android:visibility="gone" />

            <ImageButton
                android:id="@+id/addTextListButton"
                android:layout_width="0dp"
                android:layout_height="48dp"
                android:layout_weight="1"
                android:layout_gravity="right"
                android:background="@android:color/transparent"
                android:contentDescription="@string/addItemButton"
                android:scaleType="fitCenter"
                android:src="@drawable/plus_add"
                android:visibility="gone" />
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="fill_parent"
        android:gravity="bottom|center_horizontal"
        android:orientation="horizontal"
        android:paddingLeft="16dp"
        android:paddingRight="16dp" >

        <ImageButton
            android:id="@+id/syncListsButton"
            android:layout_width="64dp"
            android:layout_height="match_parent"
            android:src="@android:drawable/ic_popup_sync" />

        <ImageButton
            android:id="@+id/showOrHide"
            android:layout_width="64dp"
            android:layout_height="match_parent" />

        <ImageButton
            android:id="@+id/delListButton"
            android:layout_width="64dp"
            android:layout_height="match_parent"
            android:src="@android:drawable/ic_menu_delete" />
    </LinearLayout>
</LinearLayout>

The "showOrHide" button shows/hides the "addListText"/"addTextListButton" combo.

When the EditText is shown for the first time and I touch it, the soft keyboard appears on the screen and the "addListText"/"addTextListButton" combo is panned correctly. When I hide the keyboard and then show it again, the keyboard covers completely my addListText editbox!

Any idea on what's going on? I'm testing it on Android 4.2.2.

Please help! Thanks :-)

edit: I've also tried to put the first LinearLayout inside a ScrollView but it doesn't work!

Answer 1

This may seem a bit silly but I ran into this problem when I set the property gravity of my EditText to either 'center_horizontal' or 'center'. The same problem occurs when using textAlignment 'center'. Remove it and you won't run into the problem of the keyboard hiding the EditText the second time (and subsequent ones) when the keyboard comes out.

Answer 2

subclassed EditText and overridden the method onKeyPreIme(int keyCode, KeyEvent event) like this:

   @Override
   public boolean onKeyPreIme(int keyCode, KeyEvent event)
   {
      if(keyCode == KeyEvent.KEYCODE_BACK)
        {
            clearFocus();
        }
   return super.onKeyPreIme(keyCode, event);
   }

Now when the back key is pressed, the EditText lost the focus. Then tapping it again adjustpan will work.

Answer 3

The problem you're experiencing is now a known platform bug as described here: https://code.google.com/p/android/issues/detail?id=182191

The fix is not backported and so will not take effect until Android N. Until Android N is your minimum SDK, the following solution is a workaround.

You can create a custom class extending EditText and override the method onKeyPreIme(int keyCode, KeyEvent event) like this:

@Override
public boolean onKeyPreIme(int keyCode, KeyEvent event)
{
   if(keyCode == KeyEvent.KEYCODE_BACK)
     {
         clearFocus();
     }
return super.onKeyPreIme(keyCode, event);
}

You should also ensure a higher level layout has the ability to be focused so the EditText's focus may be cleared successfully. The following attributes may work for you:

android:descendantFocusability="beforeDescendants"
android:focusableInTouchMode="true"

Now when the back key is pressed, the EditText loses the focus. Then when you tap the button again, adjustpan will work as intended. (Posting as an answer since the edit was refused.)