Question

I have this XML file:

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:orientation="vertical"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent">
    <Button android:text="Disable Filter" android:background="@drawable/buttons" style="@style/ButtonText" android:layout_weight="25" />
    <ImageView android:id="@+id/imageFilter" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="75" />
    <HorizontalScrollView android:layout_width="fill_parent" android:layout_height="wrap_content">
        <LinearLayout android:id="@+id/horizontal" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent">
        </LinearLayout>
    </HorizontalScrollView>
</LinearLayout>

As soon as I add android:id="@+id/btnFilterPreview" to the Button my app stops working. Why is that?

Answer 1

In Netbeans to solve the issue, Right click on the Project and and chose: Clean and Build