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I don't have a title bar in Android studio. When I press the Show System UI button, my title bar does not appear

Look the image: image: enter image description here I don't know what code this is caused by. That's why I will only share themes.xml codes. //Themes.xml <resources xmlns:tools="http://schemas.android.com/tools"> <!-- Base application theme. --> <style name="Base.Theme.TitleBarSettings" parent="Theme.Material3.DayNight.NoActionBar"> <!-- Customize your light…

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Firebase – Query using firestore collectionGroup but cant get data from root collection

I want to fetch learners enrolled in a specific subject. the collectionGroup works dbFire4 = Firebase.firestore dbFire4.collectionGroup("ClassEnrolled") .whereEqualTo("classID", classID) .get() .addOnSuccessListener { for (doc in documents) { val empData = doc.toObject(LearnerModel::class.java) learnerList.add(empData) } val mAdapter = LearnerAdapter(learnerList) recViewLearnerList.adapter = mAdapter…

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Android Studio: Unable to determine activity name

I created an app in Android Studio (2022.3.1) that just contains a webview and handles urls. It worked until I added deep links via intent. Can someone tell me, whats wrong with that? AndroidManifest.xml: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"…

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