Question

I need to put a vertical scroll bar in a home screen widget, and after searching many times, I can’t find a convenient solution that works on API3 and above!

I tried many solutions:
– using bitmap created at run-time, but on some displays it never reach 100%
– a patch9 bitmap, but the scroll bar display gets completely messed up when the progress is near 0.
– using the addView() with 100 existing layout and it works great, except it’s only available since API7!
– including all 100 layouts and showing only one at a time, work fine, but what a mess to include those in my 8 different widget layouts!

I tried to use the weight programmatically but it’s not possible either, any other solution to resize a view based on a %?

Here is one progress bar layout I currently use:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent" android:layout_height="fill_parent">
    <ImageView android:layout_weight="11" android:layout_width="fill_parent"
        android:layout_height="fill_parent" />
    <ImageView android:src="@drawable/scale"
        android:layout_width="fill_parent" android:layout_height="fill_parent"
        android:layout_weight="89" />
</LinearLayout>

Answer 1

Only solution I found so far is to have all the possible progress levels ready to use in various Xml layout files.

On Android API < 7, all those need to be included in a single xml layout and shown/hidden at run-time, while on Android API >= 7, one can actually use addRemoteView() to include the desired layout in a much more efficient way!