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Instead of using this following line for each textview:
android:textSize="40sp"
Am I able to replace 40sp with a variable?
As a side question, I’ve been recommended to use SP units as it goes by user defined settings. Is this a best practice?
You can either use a dimension resource (e.g.,
android:textSize="@dimen/someSize"), or use a style that does this (per AlexN’s answer), or set the size at runtime viasetTextSize().On newer versions of Android, the user can change the base font size via the Settings application. By using
spfor units, your font sizes will scale along with the base font size. If you use other units (e.g.,dp), your font size will remain the same regardless of what the user has in Settings. It is impossible to say whether any given use ofspis a “best practice” or not — I am sure that there are cases where allowing the font size to change would be a bad thing. By default, though,spis probably the right starting point.