CODEWITHSUNDEEP
androidbuttonandroid-appcompat
Angelina
Angelina

Reputation: 1583

AppCompatButton on Android 5: app:backgroundTint works but supportBackgroundTintList does NOT :(

I need to reuse XML layout and change button color programmatically. In Android 5 applying app:backgroundTint in XML changes button color but I need to do it programmatically and I do it in Recyclerview:

holder.button.supportBackgroundTintList = ContextCompat.getColorStateList(context, backgroundColorRes)

This has no effect.

Upvotes: 1

Views: 257

Answers (1)

Ben P.
Ben P.

Reputation: 54224

The setSupportBackgroundTintList() method is annotated with @RestrictTo({Scope.LIBRARY_GROUP}), which means you are not supposed to call it directly. Instead, you should use ViewCompat.setBackgroundTintList().

Try changing your code to this instead:

val colorStateList = ContextCompat.getColorStateList(context, backgroundColorRes)
ViewCompat.setBackgroundTintList(holder.button, colorStateList)

If you look at the source code for ViewCompat.setBackgroundTintList(), you'll see that it does different things for API 21+ (Android 5 and higher) than earlier versions. Chances are good that the "support" background tint is only applied on earlier versions of Android, and ViewCompat will make it so that you don't have to think about that.

Upvotes: 3

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