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androidandroid-themeandroid-stylesandroid-viewbindingandroid-attributes

SetTheme does not work when using viewBinding

I have two themes in my app (dark and light mode) and I could change the themes without any problem. But, since I used the viewBinding, the setTheme() function did not work and I can't change the activity's theme anymore. Does anyone know what's the problem?

This is my old code (which worked)

setTheme(getAppTheme());
setContentView(R.layout.my_layout);

And the new code (which does not work)

setTheme(getAppTheme());
setContentView(binding.getRoot());

Thank you for taking the time to read, and sorry for my bad English :)

Solution

  • You must be initializing your binding variable before you're setting your theme. You have to initialize your activity binding after you've set the theme, for it to work correctly.

    setTheme(getAppTheme());
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.getRoot());