How to set size of nine-patch drawable programmatically in android

Asked Oct 15 '14 at 09:15

Active Oct 16 '14 at 10:12

Viewed 1,092 times

This is how we can resize a normal bitmap drawable

 Drawable d = getResources().getDrawable(R.drawable.error);
    Bitmap bm = ((BitmapDrawable)d).getBitmap();

    error_indicator = new BitmapDrawable(getResources(), bm.createScaledBitmap(bm, 50, 50, true));

But I want to know how to resize a nine patch drawable. since the above code doesnt works for me giving me ClassCastException saying NinePatchDrawable cannot be cast to BitmapDrawable. error drawable

This is nine-patch drawable(hdpi).I have other resolutions icons too

Draw 9-patch tool screenshot

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App Screenshot

enter image description here

edited Oct 16 '14 at 10:12

asked Oct 15 '14 at 09:15

sanedroid

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nah that doesnt works..already tried it.. – sanedroid Oct 15 '14 at 10:54
setBounds(): `Specify a bounding rectangle for the Drawable. This is where the drawable will draw when its draw() method is called.` – pskink Oct 15 '14 at 10:57
I have tried drawable.setBounds(top, left, right, bottom); . But this doesnt works for me.. infact my icon looks messed up.. – sanedroid Oct 15 '14 at 11:38
what exactly are you trying to do? – pskink Oct 15 '14 at 11:39
I am trying to resize my editext's error icon(drawable) using setError method but my I want to give my drawable a particular height and width programmatically. I dont want to use my drawable's original dimensions – sanedroid Oct 15 '14 at 11:48
so you are using TextView.setError(CharSequence, Drawable)? if so it shows the Drawable resized as set by setBounds() – pskink Oct 15 '14 at 12:00
yes I am using Edittext.. I tried setBounds but it is messing up icon instead of resizing.. – sanedroid Oct 15 '14 at 13:10
messing up? if i use setBounds() then it is resizing, not messing up – pskink Oct 15 '14 at 13:41
I dont know.. but that is not working for me.. My icon is an exclamation inside circle but when I use setBounds it displays some weird starlike image..not working for me.. – sanedroid Oct 15 '14 at 13:52
now run draw9patch tool and see if it looks as you want it to be – pskink Oct 16 '14 at 07:03
@pskink - what do you mean by exactly asking me to see if it looks as I want? I mean I havent used this tool much.. it looks the same as above when I opened it in the tool.. – sanedroid Oct 16 '14 at 07:28
see the right scrolling view – pskink Oct 16 '14 at 07:30
There are 3.. none of them looks like the one above.. Do I have to change the patches? – sanedroid Oct 16 '14 at 07:47
the output is same as the previous one.. – sanedroid Oct 16 '14 at 09:39
so whats modified 9 patch and the output? – pskink Oct 16 '14 at 09:40
will upload a screenshot of the tool – sanedroid Oct 16 '14 at 09:59
upload 9 patch and tho output of your app – pskink Oct 16 '14 at 10:01
This is the code I am using: int left = 0; int top = 0; int right = 100; int bottom = 100; error_indicator.setBounds(left, top, right, bottom); – sanedroid Oct 16 '14 at 10:04
so whats modified 9 patch and the output of your app? – pskink Oct 16 '14 at 10:05
Comments are not for extended discussion; this conversation has been [moved to chat](http://chat.stackoverflow.com/rooms/63156/discussion-on-question-by-pooh1527-how-to-set-size-of-nine-patch-drawable-progra). – Taryn Oct 16 '14 at 10:06
maybe you want to see this http://stackoverflow.com/a/6828754/724913 – arkoak Feb 26 '17 at 15:18

How to set size of nine-patch drawable programmatically in android

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