android: Fix setup rotation bug
If you rotated the device at the "Add Games" screen the buttons would disappear until you trigged them from the beginning page swap. Now button state is saved across recreation.
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@ -13,6 +13,8 @@ import androidx.appcompat.app.AppCompatActivity
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import androidx.core.content.ContextCompat
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import androidx.core.view.ViewCompat
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import androidx.core.view.WindowInsetsCompat
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import androidx.core.view.isVisible
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import androidx.core.view.updatePadding
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import androidx.fragment.app.Fragment
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import androidx.fragment.app.activityViewModels
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import androidx.navigation.findNavController
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@ -36,6 +38,11 @@ class SetupFragment : Fragment() {
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private lateinit var mainActivity: MainActivity
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companion object {
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const val KEY_NEXT_VISIBILITY = "NextButtonVisibility"
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const val KEY_BACK_VISIBILITY = "BackButtonVisibility"
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}
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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exitTransition = MaterialFadeThrough()
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@ -134,14 +141,27 @@ class SetupFragment : Fragment() {
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binding.buttonNext.setOnClickListener { pageForward() }
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binding.buttonBack.setOnClickListener { pageBackward() }
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if (binding.viewPager2.currentItem == 0) {
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binding.buttonNext.visibility = View.INVISIBLE
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binding.buttonBack.visibility = View.INVISIBLE
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if (savedInstanceState != null) {
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val nextIsVisible = savedInstanceState.getBoolean(KEY_NEXT_VISIBILITY)
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val backIsVisible = savedInstanceState.getBoolean(KEY_BACK_VISIBILITY)
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if (nextIsVisible) {
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binding.buttonNext.visibility = View.VISIBLE
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}
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if (backIsVisible) {
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binding.buttonBack.visibility = View.VISIBLE
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}
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}
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setInsets()
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}
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override fun onSaveInstanceState(outState: Bundle) {
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super.onSaveInstanceState(outState)
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outState.putBoolean(KEY_NEXT_VISIBILITY, binding.buttonNext.isVisible)
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outState.putBoolean(KEY_BACK_VISIBILITY, binding.buttonBack.isVisible)
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}
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override fun onDestroyView() {
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super.onDestroyView()
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_binding = null
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@ -190,7 +210,7 @@ class SetupFragment : Fragment() {
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}
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private fun setInsets() =
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ViewCompat.setOnApplyWindowInsetsListener(binding.setupRoot) { view: View, windowInsets: WindowInsetsCompat ->
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ViewCompat.setOnApplyWindowInsetsListener(binding.root) { view: View, windowInsets: WindowInsetsCompat ->
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val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
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view.setPadding(
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insets.left,
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@ -22,6 +22,7 @@
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android:layout_height="wrap_content"
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android:layout_margin="16dp"
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android:text="@string/next"
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android:visibility="invisible"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintEnd_toEndOf="parent" />
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@ -32,6 +33,7 @@
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android:layout_height="wrap_content"
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android:layout_margin="16dp"
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android:text="@string/back"
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android:visibility="invisible"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintStart_toStartOf="parent" />
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