From e0a9a02157153cbfd27ad6dacbfbabba158a278d Mon Sep 17 00:00:00 2001
From: Alex Ning <chineseperson5@gmail.com>
Date: Fri, 15 Nov 2019 17:23:59 +0800
Subject: [PATCH] Swiping to refresh posts is now available.

---
 app/build.gradle                              |  1 +
 app/src/main/AndroidManifest.xml              |  2 +-
 .../Activity/ViewPostDetailActivity.java      | 20 ++++++++-
 .../Activity/ViewSubredditDetailActivity.java |  2 +-
 .../Fragment/PostFragment.java                | 43 ++++++++++---------
 app/src/main/res/layout/fragment_post.xml     | 25 +++++------
 app/src/main/res/values/styles.xml            |  5 +++
 7 files changed, 60 insertions(+), 38 deletions(-)

diff --git a/app/build.gradle b/app/build.gradle
index 3d3cf668..6a5610ba 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -81,4 +81,5 @@ dependencies {
     implementation 'androidx.preference:preference:1.1.0'
     implementation 'com.nex3z:flow-layout:1.3.0'
     implementation 'com.github.thunder413:DateTimeUtils:3.0'
+    implementation 'com.r0adkll:slidableactivity:2.1.0'
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index c7883829..3ddc6003 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -238,7 +238,7 @@
         <activity
             android:name=".Activity.ViewPostDetailActivity"
             android:parentActivityName=".Activity.MainActivity"
-            android:theme="@style/AppTheme.NoActionBar" />
+            android:theme="@style/AppTheme.NoActionBarWithTransparentBackground" />
         <activity
             android:name=".Activity.ViewSubredditDetailActivity"
             android:parentActivityName=".Activity.MainActivity"
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java
index 42824df6..4b38e45b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewPostDetailActivity.java
@@ -4,6 +4,7 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.content.res.Resources;
+import android.graphics.Color;
 import android.os.Build;
 import android.os.Bundle;
 import android.view.Menu;
@@ -32,6 +33,10 @@ import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.android.material.snackbar.Snackbar;
 import com.livefront.bridge.Bridge;
+import com.r0adkll.slidr.Slidr;
+import com.r0adkll.slidr.model.SlidrConfig;
+import com.r0adkll.slidr.model.SlidrListener;
+import com.r0adkll.slidr.model.SlidrPosition;
 
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
@@ -71,11 +76,11 @@ import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.ReadMessage;
 import ml.docilealligator.infinityforreddit.RedditAPI;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.Utils.RedditUtils;
 import ml.docilealligator.infinityforreddit.SaveThing;
-import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 import ml.docilealligator.infinityforreddit.SortType;
 import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
+import ml.docilealligator.infinityforreddit.Utils.RedditUtils;
+import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
@@ -181,6 +186,17 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
 
         EventBus.getDefault().register(this);
 
+        SlidrConfig config = new SlidrConfig.Builder()
+                .sensitivity(1f)
+                .scrimColor(Color.BLACK)
+                .scrimStartAlpha(0.8f)
+                .scrimEndAlpha(0f)
+                .velocityThreshold(2400)
+                .distanceThreshold(0.25f)
+                .build();
+
+        Slidr.attach(this);
+
         Resources resources = getResources();
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewSubredditDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewSubredditDetailActivity.java
index 4c50c45c..5a8cbaff 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewSubredditDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewSubredditDetailActivity.java
@@ -58,13 +58,13 @@ import ml.docilealligator.infinityforreddit.PostDataSource;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.ReadMessage;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 import ml.docilealligator.infinityforreddit.SortType;
 import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.SubredditDatabase.SubredditDao;
 import ml.docilealligator.infinityforreddit.SubredditDatabase.SubredditData;
 import ml.docilealligator.infinityforreddit.SubredditDatabase.SubredditViewModel;
 import ml.docilealligator.infinityforreddit.SubredditSubscription;
+import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 import pl.droidsonroids.gif.GifImageView;
 import retrofit2.Retrofit;
 
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 214f77cb..eba9f607 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/PostFragment.java
@@ -32,10 +32,10 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.LinearSmoothScroller;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.StaggeredGridLayoutManager;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
-import com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar;
 
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
@@ -62,8 +62,8 @@ import ml.docilealligator.infinityforreddit.PostDataSource;
 import ml.docilealligator.infinityforreddit.PostViewModel;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 import retrofit2.Retrofit;
 
 
@@ -84,10 +84,10 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
     private static final String IS_IN_LAZY_MODE_STATE = "IILMS";
     private static final String RECYCLER_VIEW_POSITION_STATE = "RVPS";
 
+    @BindView(R.id.swipe_refresh_layout_post_fragment)
+    SwipeRefreshLayout mSwipeRefreshLayout;
     @BindView(R.id.recycler_view_post_fragment)
     RecyclerView mPostRecyclerView;
-    @BindView(R.id.progress_bar_post_fragment)
-    CircleProgressBar mProgressBar;
     @BindView(R.id.fetch_post_info_linear_layout_post_fragment)
     LinearLayout mFetchPostInfoLinearLayout;
     @BindView(R.id.fetch_post_info_image_view_post_fragment)
@@ -131,6 +131,9 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         if (mPostRecyclerView.getAdapter() != null) {
             ((PostRecyclerViewAdapter) mPostRecyclerView.getAdapter()).setCanStartActivity(true);
         }
+        if (isInLazyMode && isLazyModePaused) {
+            resumeLazyMode(false);
+        }
     }
 
     @Override
@@ -226,6 +229,12 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             }
         };
 
+        mSwipeRefreshLayout.setOnRefreshListener(() -> {
+            mPostViewModel.refresh();
+        });
+
+        mSwipeRefreshLayout.setColorSchemeResources(R.color.colorAccent);
+
         if (savedInstanceState != null) {
             int recyclerViewPosition = savedInstanceState.getInt(RECYCLER_VIEW_POSITION_STATE);
             if (recyclerViewPosition > 0) {
@@ -465,11 +474,13 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         mPostRecyclerView.setAdapter(mAdapter);
 
         mPostViewModel = new ViewModelProvider(this, factory).get(PostViewModel.class);
-        mPostViewModel.getPosts().observe(this, posts -> mAdapter.submitList(posts));
+        mPostViewModel.getPosts().observe(this, posts -> {
+            mAdapter.submitList(posts);
+        });
 
         mPostViewModel.hasPost().observe(this, hasPost -> {
             this.hasPost = hasPost;
-            mProgressBar.setVisibility(View.GONE);
+            mSwipeRefreshLayout.setRefreshing(false);
             if (hasPost) {
                 mFetchPostInfoLinearLayout.setVisibility(View.GONE);
             } else {
@@ -485,13 +496,13 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
 
         mPostViewModel.getInitialLoadingState().observe(this, networkState -> {
             if (networkState.getStatus().equals(NetworkState.Status.SUCCESS)) {
-                mProgressBar.setVisibility(View.GONE);
+                mSwipeRefreshLayout.setRefreshing(false);
             } else if (networkState.getStatus().equals(NetworkState.Status.FAILED)) {
-                mProgressBar.setVisibility(View.GONE);
+                mSwipeRefreshLayout.setRefreshing(false);
                 mFetchPostInfoLinearLayout.setOnClickListener(view -> refresh());
                 showErrorView(R.string.load_posts_error);
             } else {
-                mProgressBar.setVisibility(View.VISIBLE);
+                mSwipeRefreshLayout.setRefreshing(true);
             }
         });
 
@@ -541,7 +552,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
 
     private void showErrorView(int stringResId) {
         if (activity != null && isAdded()) {
-            mProgressBar.setVisibility(View.GONE);
+            mSwipeRefreshLayout.setRefreshing(false);
             mFetchPostInfoLinearLayout.setVisibility(View.VISIBLE);
             mFetchPostInfoTextView.setText(stringResId);
             mGlide.load(R.drawable.error_image).into(mFetchPostInfoImageView);
@@ -689,16 +700,8 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
     }
 
     @Override
-    public void onStart() {
-        super.onStart();
-        if (isInLazyMode && isLazyModePaused) {
-            resumeLazyMode(false);
-        }
-    }
-
-    @Override
-    public void onStop() {
-        super.onStop();
+    public void onPause() {
+        super.onPause();
         if (isInLazyMode) {
             pauseLazyMode(false);
         }
diff --git a/app/src/main/res/layout/fragment_post.xml b/app/src/main/res/layout/fragment_post.xml
index 56a9290f..263929d6 100644
--- a/app/src/main/res/layout/fragment_post.xml
+++ b/app/src/main/res/layout/fragment_post.xml
@@ -5,22 +5,19 @@
     android:layout_height="match_parent"
     tools:application="ml.docilealligator.infinityforreddit.Fragment.PostFragment">
 
-    <com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar
-        android:id="@+id/progress_bar_post_fragment"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="16dp"
-        android:layout_marginBottom="16dp"
-        app:mlpb_progress_stoke_width="3dp"
-        app:mlpb_progress_color="@color/colorAccent"
-        app:mlpb_background_color="?attr/circularProgressBarBackground"
-        android:layout_gravity="center_horizontal"/>
-
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/recycler_view_post_fragment"
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/swipe_refresh_layout_post_fragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:clipToPadding="false" />
+        android:background="@color/backgroundColor">
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/recycler_view_post_fragment"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:clipToPadding="false" />
+
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
     <LinearLayout
         android:id="@+id/fetch_post_info_linear_layout_post_fragment"
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 57a528fd..3248cfd4 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -27,6 +27,11 @@
         <item name="android:windowTranslucentStatus">true</item>
     </style>
 
+    <style name="AppTheme.NoActionBarWithTransparentBackground" parent="AppTheme.NoActionBar">
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+    </style>
+
     <style name="AppTheme.ActionBar.Transparent" parent="AppTheme">
         <item name="android:windowBackground">@android:color/black</item>
         <item name="android:windowTranslucentStatus">true</item>