From b47422fd758896c7e3371bcf59ec6fe9a262e980 Mon Sep 17 00:00:00 2001
From: Alex Ning <chineseperson5@gmail.com>
Date: Sat, 26 Sep 2020 10:10:51 +0800
Subject: Animate layout changes in item_post_compact.xml.

---
 .../Adapter/PostRecyclerViewAdapter.java           | 25 ++++++++++++++++----
 .../infinityforreddit/Fragment/PostFragment.java   | 27 ++++++++++++++++++++++
 app/src/main/res/layout/item_post_compact.xml      |  3 ++-
 3 files changed, 49 insertions(+), 6 deletions(-)

(limited to 'app/src')

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/PostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/PostRecyclerViewAdapter.java
index 772040b6..32f3eb84 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/PostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/PostRecyclerViewAdapter.java
@@ -16,6 +16,7 @@ import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
+import android.widget.LinearLayout;
 import android.widget.ProgressBar;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
@@ -782,9 +783,15 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                 }
 
                 if (mCompactLayoutToolbarHiddenByDefault) {
-                    ((PostCompactBaseViewHolder) holder).bottomConstraintLayout.setVisibility(View.GONE);
+                    mCallback.delayTransition();
+                    ViewGroup.LayoutParams params = (LinearLayout.LayoutParams) ((PostCompactBaseViewHolder) holder).bottomConstraintLayout.getLayoutParams();
+                    params.height = 0;
+                    ((PostCompactBaseViewHolder) holder).bottomConstraintLayout.setLayoutParams(params);
                 } else {
-                    ((PostCompactBaseViewHolder) holder).bottomConstraintLayout.setVisibility(View.VISIBLE);
+                    ViewGroup.LayoutParams params = (LinearLayout.LayoutParams) ((PostCompactBaseViewHolder) holder).bottomConstraintLayout.getLayoutParams();
+                    params.height = LinearLayout.LayoutParams.WRAP_CONTENT;
+                    ((PostCompactBaseViewHolder) holder).bottomConstraintLayout.setLayoutParams(params);
+                    mCallback.delayTransition();
                 }
 
                 if (mShowDividerInCompactLayout) {
@@ -1319,6 +1326,8 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
         void typeChipClicked(int filter);
 
         void currentlyBindItem(int position);
+
+        void delayTransition();
     }
 
     public class PostBaseViewHolder extends RecyclerView.ViewHolder {
@@ -2819,10 +2828,16 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
 
             itemView.setOnLongClickListener(view -> {
                 if (mLongPressToHideToolbarInCompactLayout) {
-                    if (bottomConstraintLayout.getVisibility() == View.VISIBLE) {
-                        bottomConstraintLayout.setVisibility(View.GONE);
+                    if (bottomConstraintLayout.getLayoutParams().height == 0) {
+                        ViewGroup.LayoutParams params = (LinearLayout.LayoutParams) bottomConstraintLayout.getLayoutParams();
+                        params.height = LinearLayout.LayoutParams.WRAP_CONTENT;
+                        bottomConstraintLayout.setLayoutParams(params);
+                        mCallback.delayTransition();
                     } else {
-                        bottomConstraintLayout.setVisibility(View.VISIBLE);
+                        mCallback.delayTransition();
+                        ViewGroup.LayoutParams params = (LinearLayout.LayoutParams) bottomConstraintLayout.getLayoutParams();
+                        params.height = 0;
+                        bottomConstraintLayout.setLayoutParams(params);
                     }
                 }
                 return true;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/PostFragment.java
index fcf7db71..d5b638b3 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/PostFragment.java
@@ -42,6 +42,8 @@ import androidx.recyclerview.widget.LinearSmoothScroller;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.StaggeredGridLayoutManager;
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+import androidx.transition.AutoTransition;
+import androidx.transition.TransitionManager;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
@@ -441,6 +443,11 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                         maxPosition = position;
                     }
                 }
+
+                @Override
+                public void delayTransition() {
+                    TransitionManager.beginDelayedTransition(mPostRecyclerView, new AutoTransition());
+                }
             });
 
             mPostViewModel = new ViewModelProvider(this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
@@ -488,6 +495,11 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                         maxPosition = position;
                     }
                 }
+
+                @Override
+                public void delayTransition() {
+                    TransitionManager.beginDelayedTransition(mPostRecyclerView, new AutoTransition());
+                }
             });
 
             mPostViewModel = new ViewModelProvider(this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
@@ -537,6 +549,11 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                         maxPosition = position;
                     }
                 }
+
+                @Override
+                public void delayTransition() {
+                    TransitionManager.beginDelayedTransition(mPostRecyclerView, new AutoTransition());
+                }
             });
 
             mPostViewModel = new ViewModelProvider(this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
@@ -585,6 +602,11 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                         maxPosition = position;
                     }
                 }
+
+                @Override
+                public void delayTransition() {
+                    TransitionManager.beginDelayedTransition(mPostRecyclerView, new AutoTransition());
+                }
             });
 
             mPostViewModel = new ViewModelProvider(this, new PostViewModel.Factory(accessToken == null ? mRetrofit : mOauthRetrofit, accessToken,
@@ -624,6 +646,11 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                         maxPosition = position;
                     }
                 }
+
+                @Override
+                public void delayTransition() {
+                    TransitionManager.beginDelayedTransition(mPostRecyclerView, new AutoTransition());
+                }
             });
 
             mPostViewModel = new ViewModelProvider(this, new PostViewModel.Factory(mOauthRetrofit, accessToken,
diff --git a/app/src/main/res/layout/item_post_compact.xml b/app/src/main/res/layout/item_post_compact.xml
index 54f1f34d..36dcfc60 100644
--- a/app/src/main/res/layout/item_post_compact.xml
+++ b/app/src/main/res/layout/item_post_compact.xml
@@ -3,7 +3,8 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:orientation="vertical">
+    android:orientation="vertical"
+    android:animateLayoutChanges="true">
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
-- 
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