fixed scrolling behavior in AllSeriesFragment.kt

DatL4g · Jul 7, 2022 · 0190cb9 · 0190cb9
1 parent 8bcc6dc
commit 0190cb9
Show file tree

Hide file tree

Showing 6 changed files with 84 additions and 32 deletions.
diff --git a/app/src/main/java/de/datlag/burningseries/common/ExtendView.kt b/app/src/main/java/de/datlag/burningseries/common/ExtendView.kt
@@ -3,10 +3,14 @@
 package de.datlag.burningseries.common
 
 import android.content.Context
+import android.view.Gravity
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.FrameLayout
 import android.widget.ImageView
+import android.widget.LinearLayout
+import androidx.annotation.GravityInt
 import androidx.annotation.LayoutRes
 import androidx.core.widget.ImageViewCompat
 import androidx.viewbinding.ViewBinding
@@ -57,3 +61,27 @@ val View.anyHeight: Int?
 			else -> null
 		}
 	}
+
+fun View.setLayoutGravity(@GravityInt gravity: Int) {
+	val params = this.layoutParams
+	val asParams = try {
+		params as LinearLayout.LayoutParams
+	} catch (ignored: Throwable) {
+		try {
+			params as FrameLayout.LayoutParams
+		} catch (ignored: Throwable) {
+			params
+		}
+	}
+	when (asParams) {
+		is LinearLayout.LayoutParams -> {
+			asParams.gravity = gravity
+		}
+		is FrameLayout.LayoutParams -> {
+			asParams.gravity = gravity
+		}
+	}
+}
+
+fun View.setLayoutGravityCenter() = this.setLayoutGravity(Gravity.CENTER)
+fun View.setLayoutGravityNone() = this.setLayoutGravity(Gravity.NO_GRAVITY)
diff --git a/app/src/main/java/de/datlag/burningseries/extend/AdvancedFragment.kt b/app/src/main/java/de/datlag/burningseries/extend/AdvancedFragment.kt
@@ -6,6 +6,7 @@ import android.os.Build
 import android.os.Bundle
 import android.util.Size
 import android.view.View
+import android.view.ViewGroup
 import android.view.WindowInsets
 import android.view.WindowManager
 import android.widget.LinearLayout
@@ -256,4 +257,7 @@ abstract class AdvancedFragment : Fragment {
 
 	val materialToolbar: MaterialToolbar?
 		get() = toolbarInfo?.toolbar
+
+	val fabWrapper: ViewGroup?
+		get() = (safeActivity as? FABNavigation?)?.fabWrapper
 }
diff --git a/app/src/main/java/de/datlag/burningseries/ui/activity/MainActivity.kt b/app/src/main/java/de/datlag/burningseries/ui/activity/MainActivity.kt
@@ -5,6 +5,7 @@ import android.view.KeyEvent
 import android.view.View
 import android.widget.ImageView
 import androidx.appcompat.widget.LinearLayoutCompat
+import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.ContextCompat
 import androidx.core.graphics.BlendModeColorFilterCompat
 import androidx.core.graphics.BlendModeCompat
@@ -155,4 +156,7 @@ class MainActivity : AdvancedActivity(), FABExtended, FABNavigation, ToolbarInfo
 	override val sizeHolder: View
 		get() = binding.collapsingSizeHolder
 
+	override val fabWrapper: ConstraintLayout
+		get() = binding.fabWrapper
+
 }
diff --git a/app/src/main/java/de/datlag/burningseries/ui/connector/FABNavigation.kt b/app/src/main/java/de/datlag/burningseries/ui/connector/FABNavigation.kt
@@ -1,10 +1,12 @@
 package de.datlag.burningseries.ui.connector
 
+import androidx.constraintlayout.widget.ConstraintLayout
 import com.google.android.material.floatingactionbutton.FloatingActionButton
 import io.michaelrocks.paranoid.Obfuscate
 
 @Obfuscate
 interface FABNavigation {
     val previousFab: FloatingActionButton
     val nextFab: FloatingActionButton
+    val fabWrapper: ConstraintLayout
 }
diff --git a/app/src/main/java/de/datlag/burningseries/ui/fragment/AllSeriesFragment.kt b/app/src/main/java/de/datlag/burningseries/ui/fragment/AllSeriesFragment.kt
@@ -62,21 +62,25 @@ class AllSeriesFragment : AdvancedFragment(R.layout.fragment_all_series) {
     private fun collectPagination() = burningSeriesViewModel.allSeriesPagination.launchAndCollect {
         binding.allSeriesRecycler.gone()
         binding.loadingView.visible()
+        binding.scrollWrapper.setLayoutGravityCenter()
         burningSeriesViewModel.getNewPaginationData()
     }
 
     private fun collectPaginatedData() = burningSeriesViewModel.allSeriesPaginatedFlat.launchAndCollect {
         if (it.second.isEmpty() && burningSeriesViewModel.allSeriesCount.value == 0L) {
             binding.allSeriesRecycler.gone()
             binding.loadingView.visible()
+            binding.scrollWrapper.setLayoutGravityCenter()
         } else {
             if (it.first) {
                 binding.allSeriesRecycler.gone()
                 binding.loadingView.visible()
+                binding.scrollWrapper.setLayoutGravityCenter()
             }
             allSeriesRecyclerAdapter.submitList(it.second) {
                 binding.allSeriesRecycler.visible()
                 binding.loadingView.gone()
+                binding.scrollWrapper.setLayoutGravityNone()
                 binding.allSeriesRecycler.smoothScrollToPosition(0)
             }
         }
@@ -86,6 +90,7 @@ class AllSeriesFragment : AdvancedFragment(R.layout.fragment_all_series) {
         if (it == 0L) {
             binding.allSeriesRecycler.gone()
             binding.loadingView.visible()
+            binding.scrollWrapper.setLayoutGravityCenter()
         }
     }
 
@@ -174,5 +179,6 @@ class AllSeriesFragment : AdvancedFragment(R.layout.fragment_all_series) {
         setToolbarTitle(R.string.all_series)
         appBarLayout?.setExpanded(false, false)
         appBarLayout?.setExpandable(false)
+        fabWrapper?.translationY = 0F
     }
 }
diff --git a/app/src/main/res/layout/fragment_all_series.xml b/app/src/main/res/layout/fragment_all_series.xml
@@ -1,42 +1,50 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.core.widget.NestedScrollView
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/allSeriesRecycler"
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/scrollWrapper"
+        android:layout_gravity="center"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:animateLayoutChanges="false"
-        android:nestedScrollingEnabled="false"
-        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
+        android:layout_height="match_parent">
 
-    <androidx.appcompat.widget.LinearLayoutCompat
-        android:id="@+id/loadingView"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:gravity="center"
-        android:orientation="vertical"
-        android:visibility="gone">
-
-        <ProgressBar
-            android:layout_width="?attr/actionBarSize"
-            android:layout_height="?attr/actionBarSize"
-            android:layout_margin="8dp"
-            android:indeterminate="true"
-            android:indeterminateOnly="true"
-            android:indeterminateTint="@color/onBackgroundColor" />
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/allSeriesRecycler"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:animateLayoutChanges="false"
+            android:nestedScrollingEnabled="false"
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
 
-        <com.google.android.material.textview.MaterialTextView
+        <androidx.appcompat.widget.LinearLayoutCompat
+            android:id="@+id/loadingView"
             android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize"
-            android:layout_margin="8dp"
+            android:layout_height="match_parent"
             android:gravity="center"
-            android:maxLines="1"
-            android:text="@string/loading"
-            android:textSize="20sp"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
-    </androidx.appcompat.widget.LinearLayoutCompat>
-</androidx.constraintlayout.widget.ConstraintLayout>
+            android:orientation="vertical"
+            android:visibility="gone">
+
+            <ProgressBar
+                android:layout_width="?attr/actionBarSize"
+                android:layout_height="?attr/actionBarSize"
+                android:layout_margin="8dp"
+                android:indeterminate="true"
+                android:indeterminateOnly="true"
+                android:indeterminateTint="@color/onBackgroundColor" />
+
+            <com.google.android.material.textview.MaterialTextView
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                android:layout_margin="8dp"
+                android:gravity="center"
+                android:maxLines="1"
+                android:text="@string/loading"
+                android:textSize="20sp"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent" />
+        </androidx.appcompat.widget.LinearLayoutCompat>
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.core.widget.NestedScrollView>