Monday, May 21, 2012

GridLayout from support library does not show 2 rows on Android 2, onChildVisibilityChanged Error

Has anybody gotten the support library to render a grid layout correctly in Android 2? Instead of 2 rows and columns I get a single row on the screen and see this error in the logcat output:
Android GridLayout Could not find method android.support.v7.widget.ViewGroup.onChildVisibilityChanged



The same exact layout is working on Android4 -> ICS when I change the layout tag from
android.support.v7.widget.GridLayout to GridLayout



Could this be some issue with the setup? I have the gridlayout_v7 library project in the Android tab of my Eclipse project properties and the v.13 jar is on the build path.



The xml layout that is failing is pasted below. I added the layout rows and columns explicitly in the image button tags in an effort to work around the problem. If anybody has a working example that runs on Android 2 with the support library, please share. If you have it working, I would appreciate your help to get mine going.
Thanks and regards!



<android.support.v7.widget.GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnCount="2" android:rowCount="2"
android:gravity="center_vertical"
android:layout="@drawable/bg_test_main" >

<ImageButton android:id="@+id/btnSentence"
android:layout_row="0"
android:layout_column="0"
android:src="@drawable/testa_btn"
android:contentDescription="@string/spin_fill_in"
android:background="@android:color/transparent"
/>
<ImageButton android:id="@+id/btnAudio"
android:layout_row="0"
android:layout_column="1"
android:src="@drawable/testb_btn"
android:contentDescription="@string/audio_quiz"
android:background="@android:color/transparent"
/>
<ImageButton android:id="@+id/btnPickWord"
android:layout_row="1"
android:layout_column="0"
android:src="@drawable/testc_btn"
android:background="@android:color/transparent"
android:contentDescription="@string/def_pick_word" />

<ImageButton android:id="@+id/btnPickDef"
android:layout_row="1"
android:layout_column="1"
android:src="@drawable/testd_btn"
android:background="@android:color/transparent"
android:contentDescription="@string/pick_def" />

</android.support.v7.widget.GridLayout>




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