Just wondering why there is so much complexity involved in getting the
platform Gallery background. The SDK provides a theme that contains
an attribute that is a drawable resource. The theme is not a
drawable so it can't be used in a layout as a background. The example
given is -
http://developer.android.com/resources/tutorials/views/hello-gallery.html
- with these steps -
TypedArray a =
obtainStyledAttributes(R.styleable.HelloGallery);
mGalleryItemBackground = a.getResourceId(
R.styleable.HelloGallery_android_galleryItemBackground, 0);
a.recycle();
setBackgroundResource(mGalleryItemBackground);
where HelloGallery is a Them that includes the platform Theme
attribute that is the actual drawable -
<resources>
<declare-styleable name="HelloGallery">
<attr name="android:galleryItemBackground" />
</declare-styleable>
</resources>
All you really want is drawable/gallery_item_background.xml.
Unfortunately the very useful Gallery widget doesn't have default
focus behavior unless you do all this.
What is the benefit and/or rationale for all these layers?
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