How can I change a button style dynamically in And

Question

This question already has an answer here:

• How to programmatically set style attribute in a view 11 answers

I want to change the style of a button dynamically, i.e. in Java code, something like:

((Button)findViewById(id)).setStyle("@styles/foo")

<resources>
    <style name="foo">
        <item name="android:adjustViewBounds">true</item>
        <item name="android:maxHeight">100px</item>
        <item name="android:maxWidth">200px</item>
    </style>
</resources>

I have not seen nothing like setStyle, so:

do I have to change every single property or I can change the whole style?

Answer 1

Check out this question: How to programmatically setting style attribute in a view

Answer 2

The easiest way I found to circumvent this obvious flaw was to make to buttons. Make one of them Visibility.gone. Then simply change Visibility from the other one to gone and activate the first one by Visibility.visible.

I don't really like that solution, but it's faster and saner than the alternatives I found so far.

Answer 3

To assign a style like this

<style name="ButtonHOLO" parent="android:Widget.Button">
      <item name="android:background">@drawable/btn_default_holo_dark</item>
      <item name="android:minHeight">@dimen/calc_btn_h</item>
      <item name="android:minWidth">@dimen/calc_btn_w</item>
      <item name="android:textColor">#ffffff</item>
</style>

to a button dynamically you need to use both setBackgroundResource() and setTextAppearance() functions. E.g.:

btn.setBackgroundResource(R.drawable.btn_default_holo_dark);
btn.setTextAppearance(context, R.style.ButtonHOLO);

where

btn_default_holo_dark

is a name of .xml file which describes a selector for your button.

Answer 4

You might also want to take a look at 9 patch images. These are very useful for adjusting the image size and text tied to your widget or button based on the current device running your application.

9 patch

9 patch draw tool