Unable to select 'settings activity' in android studio
问题 I am following the tutorial (9.2), it asks to add a 'settings activity', when i try to select it, it is greyed out and says that it 'requires androidx support'. I can find no reference to androidx support in the tutorial and have tried googling the problem to no avail. I have even loaded the completed project from the master files to compare their code with mine, i can find no reference to androidx. I am using android studio 3.4.1 回答1: As it says, it requires androidx support. You need to