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BOOK: Beginning Android Application Development
This is the forum to discuss the Wrox book Beginning Android Application Development by Wei-Meng Lee; ISBN: 978-1-1180-1711-1
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Old May 19th, 2015, 05:53 AM
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Default Custom view is ignored while inflating


I have a trouble creating a custom View. When I inflate my xml layout, the com.example.pawel.testapp.CustomKeyboardView tag is ignored. What I do is:

In the SimpleIME.java:
public View onCreateInputView() {
        LinearLayout ll= (LinearLayout)getLayoutInflater().inflate(R.layout.input,null);
        List<View> list = ll.getFocusables(View.FOCUS_FORWARD);
        Log.d("App:", "isEmpty:"list.isEmpty());
        for(View item : list){
            Log.d("App:", item.toString());
In the input.xml:
<?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" android:layout_width="match_parent"
    android:keyPreviewLayout ="@layout/preview"
<Button android:layout_width="match_parent"
    android:layout_height="wrap_content" >

In the values/attrs.xml:
<?xml version="1.0" encoding="utf-8"?>
    <declare-styleable name="CustomKeyboardView">
        <attr name="android:text"/>
        <attr name="android:textColor"/>
        <attr name="extraInformation" format="string" />
The console output is like:
05-19 09:44:02.089    6658-6658/? D/App:﹕ isEmpty:false
05-19 09:44:02.089    6658-6658/? D/App:﹕ android.widget.Button{301650d5 VFED..C. ......I. 0,0-0,0}
When I delete the Button tag the list becomes empty. I think it means that there's something missing here, so that the inflate method can interpret my CustomKeyboardView proprerly. What should I do?
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