How to Set/Change the Text Size of a Button
added in API Level 1Recommended dimension type for text is "sp".
1. Create an Android project, if you don't already have one.
2. Add a button.
3. Open the main.xml file and add the below highlighted line of code between your <Button> tags.
<Button
...
android:textSize="50sp"
/>
4. Compile and run!
Resources:
http://developer.android.com/reference/android/R.attr.html#textSize
