Implemented share and import themes. Fixed some issues of custom theme.

19 files changed, 273 insertions, 50 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomThemeListingActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomThemeListingActivity.java
index b8fb82a4..45902fd8 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomThemeListingActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomThemeListingActivity.java
@@ -1,5 +1,7 @@
 package ml.docilealligator.infinityforreddit.Activity;
 
+import android.content.ClipData;
+import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
@@ -10,6 +12,7 @@ import android.widget.EditText;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.widget.Toolbar;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
@@ -17,6 +20,9 @@ import androidx.recyclerview.widget.RecyclerView;
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.snackbar.Snackbar;
+import com.google.gson.Gson;
+import com.google.gson.JsonSyntaxException;
 
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
@@ -29,18 +35,27 @@ import butterknife.ButterKnife;
 import ml.docilealligator.infinityforreddit.Adapter.CustomThemeListingRecyclerViewAdapter;
 import ml.docilealligator.infinityforreddit.AsyncTask.ChangeThemeNameAsyncTask;
 import ml.docilealligator.infinityforreddit.AsyncTask.DeleteThemeAsyncTask;
+import ml.docilealligator.infinityforreddit.AsyncTask.GetCustomThemeAsyncTask;
+import ml.docilealligator.infinityforreddit.AsyncTask.InsertCustomThemeAsyncTask;
+import ml.docilealligator.infinityforreddit.CustomTheme.CustomTheme;
 import ml.docilealligator.infinityforreddit.CustomTheme.CustomThemeViewModel;
 import ml.docilealligator.infinityforreddit.CustomTheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.Event.RecreateActivityEvent;
+import ml.docilealligator.infinityforreddit.Fragment.CreateThemeBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.Fragment.CustomThemeOptionsBottomSheetFragment;
-import ml.docilealligator.infinityforreddit.Fragment.SelectBaseThemeBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
 import ml.docilealligator.infinityforreddit.Utils.CustomThemeSharedPreferencesUtils;
 
-public class CustomThemeListingActivity extends BaseActivity implements CustomThemeOptionsBottomSheetFragment.CustomThemeOptionsBottomSheetFragmentListener {
+import static android.content.ClipDescription.MIMETYPE_TEXT_PLAIN;
 
+public class CustomThemeListingActivity extends BaseActivity implements
+        CustomThemeOptionsBottomSheetFragment.CustomThemeOptionsBottomSheetFragmentListener,
+        CreateThemeBottomSheetFragment.SelectBaseThemeBottomSheetFragmentListener {
+
+    @BindView(R.id.coordinator_layout_custom_theme_listing_activity)
+    CoordinatorLayout coordinatorLayout;
     @BindView(R.id.appbar_layout_customize_theme_listing_activity)
     AppBarLayout appBarLayout;
     @BindView(R.id.toolbar_customize_theme_listing_activity)
@@ -94,8 +109,8 @@ public class CustomThemeListingActivity extends BaseActivity implements CustomTh
         customThemeViewModel.getAllCustomThemes().observe(this, adapter::setUserThemes);
 
         fab.setOnClickListener(view -> {
-            SelectBaseThemeBottomSheetFragment selectBaseThemeBottomSheetFragment = new SelectBaseThemeBottomSheetFragment();
-            selectBaseThemeBottomSheetFragment.show(getSupportFragmentManager(), selectBaseThemeBottomSheetFragment.getTag());
+            CreateThemeBottomSheetFragment createThemeBottomSheetFragment = new CreateThemeBottomSheetFragment();
+            createThemeBottomSheetFragment.show(getSupportFragmentManager(), createThemeBottomSheetFragment.getTag());
         });
     }
 
@@ -124,10 +139,10 @@ public class CustomThemeListingActivity extends BaseActivity implements CustomTh
     }
 
     @Override
-    public void changeName(String oldName) {
+    public void changeName(String oldThemeName) {
         View dialogView = getLayoutInflater().inflate(R.layout.dialog_edit_theme_name, null);
         EditText themeNameEditText = dialogView.findViewById(R.id.theme_name_edit_text_edit_theme_name_dialog);
-        themeNameEditText.setText(oldName);
+        themeNameEditText.setText(oldThemeName);
         themeNameEditText.requestFocus();
         InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
         if (imm != null) {
@@ -141,13 +156,9 @@ public class CustomThemeListingActivity extends BaseActivity implements CustomTh
                     if (imm != null) {
                         imm.hideSoftInputFromWindow(themeNameEditText.getWindowToken(), 0);
                     }
-                    new ChangeThemeNameAsyncTask(redditDataRoomDatabase, oldName, themeNameEditText.getText().toString()).execute();
-                })
-                .setNegativeButton(R.string.cancel, (dialogInterface, i) -> {
-                    if (imm != null) {
-                        imm.hideSoftInputFromWindow(themeNameEditText.getWindowToken(), 0);
-                    }
+                    new ChangeThemeNameAsyncTask(redditDataRoomDatabase, oldThemeName, themeNameEditText.getText().toString()).execute();
                 })
+                .setNegativeButton(R.string.cancel, null)
                 .setOnDismissListener(dialogInterface -> {
                     if (imm != null) {
                         imm.hideSoftInputFromWindow(themeNameEditText.getWindowToken(), 0);
@@ -157,12 +168,31 @@ public class CustomThemeListingActivity extends BaseActivity implements CustomTh
     }
 
     @Override
-    public void delete(String name) {
+    public void shareTheme(String themeName) {
+        new GetCustomThemeAsyncTask(redditDataRoomDatabase, themeName, customTheme -> {
+            if (customTheme != null) {
+                String jsonModel = customTheme.getJSONModel();
+                ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
+                if (clipboard != null) {
+                    ClipData clip = ClipData.newPlainText("simple text", jsonModel);
+                    clipboard.setPrimaryClip(clip);
+                    Snackbar.make(coordinatorLayout, R.string.theme_copied, Snackbar.LENGTH_SHORT).show();
+                } else {
+                    Snackbar.make(coordinatorLayout, R.string.copy_theme_faied, Snackbar.LENGTH_SHORT).show();
+                }
+            } else {
+                Snackbar.make(coordinatorLayout, R.string.cannot_find_theme, Snackbar.LENGTH_SHORT).show();
+            }
+        }).execute();
+    }
+
+    @Override
+    public void delete(String themeName) {
         new MaterialAlertDialogBuilder(this, R.style.MaterialAlertDialogTheme)
                 .setTitle(R.string.delete_theme)
-                .setMessage(getString(R.string.delete_theme_dialog_message, name))
+                .setMessage(getString(R.string.delete_theme_dialog_message, themeName))
                 .setPositiveButton(R.string.yes, (dialogInterface, i)
-                        -> new DeleteThemeAsyncTask(redditDataRoomDatabase, name, (isLightTheme, isDarkTheme, isAmoledTheme) -> {
+                        -> new DeleteThemeAsyncTask(redditDataRoomDatabase, themeName, (isLightTheme, isDarkTheme, isAmoledTheme) -> {
                             if (isLightTheme) {
                                 CustomThemeSharedPreferencesUtils.insertThemeToSharedPreferences(
                                         CustomThemeWrapper.getIndigo(CustomThemeListingActivity.this), lightThemeSharedPreferences);
@@ -187,8 +217,101 @@ public class CustomThemeListingActivity extends BaseActivity implements CustomTh
         EventBus.getDefault().unregister(this);
     }
 
+    public void shareTheme(CustomTheme customTheme) {
+        if (customTheme != null) {
+            String jsonModel = customTheme.getJSONModel();
+            ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
+            if (clipboard != null) {
+                ClipData clip = ClipData.newPlainText("simple text", jsonModel);
+                clipboard.setPrimaryClip(clip);
+                Snackbar.make(coordinatorLayout, R.string.theme_copied, Snackbar.LENGTH_SHORT).show();
+            } else {
+                Snackbar.make(coordinatorLayout, R.string.copy_theme_faied, Snackbar.LENGTH_SHORT).show();
+            }
+        } else {
+            Snackbar.make(coordinatorLayout, R.string.cannot_find_theme, Snackbar.LENGTH_SHORT).show();
+        }
+    }
+
     @Subscribe
     public void onRecreateActivityEvent(RecreateActivityEvent recreateActivityEvent) {
         recreate();
     }
+
+    @Override
+    public void importTheme() {
+        ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
+        if (clipboard != null) {
+            // If it does contain data, decide if you can handle the data.
+            if (!clipboard.hasPrimaryClip()) {
+                Snackbar.make(coordinatorLayout, R.string.no_data_in_clipboard, Snackbar.LENGTH_SHORT).show();
+            } else if (clipboard.getPrimaryClipDescription() != null &&
+                    !clipboard.getPrimaryClipDescription().hasMimeType(MIMETYPE_TEXT_PLAIN)) {
+                // since the clipboard has data but it is not plain text
+                Snackbar.make(coordinatorLayout, R.string.no_data_in_clipboard, Snackbar.LENGTH_SHORT).show();
+            } else if (clipboard.getPrimaryClip() != null){
+                ClipData.Item item = clipboard.getPrimaryClip().getItemAt(0);
+                String json = item.getText().toString();
+                try {
+                    CustomTheme customTheme = new Gson().fromJson(json, CustomTheme.class);
+                    checkDuplicateAndImportTheme(customTheme, true);
+                } catch (JsonSyntaxException e) {
+                    Snackbar.make(coordinatorLayout, R.string.parse_theme_failed, Snackbar.LENGTH_SHORT).show();
+                }
+            }
+        }
+    }
+
+    private void checkDuplicateAndImportTheme(CustomTheme customTheme, boolean checkDuplicate) {
+        new InsertCustomThemeAsyncTask(redditDataRoomDatabase, lightThemeSharedPreferences,
+                darkThemeSharedPreferences, amoledThemeSharedPreferences, customTheme, checkDuplicate,
+                new InsertCustomThemeAsyncTask.InsertCustomThemeAsyncTaskListener() {
+                    @Override
+                    public void success() {
+                        Snackbar.make(coordinatorLayout, R.string.import_theme_success, Snackbar.LENGTH_SHORT).show();
+                    }
+
+                    @Override
+                    public void duplicate() {
+                        new MaterialAlertDialogBuilder(CustomThemeListingActivity.this, R.style.MaterialAlertDialogTheme)
+                                .setTitle(R.string.duplicate_theme_name_dialog_title)
+                                .setMessage(getString(R.string.duplicate_theme_name_dialog_message, customTheme.name))
+                                .setPositiveButton(R.string.rename, (dialogInterface, i)
+                                        -> {
+                                    View dialogView = getLayoutInflater().inflate(R.layout.dialog_edit_theme_name, null);
+                                    EditText themeNameEditText = dialogView.findViewById(R.id.theme_name_edit_text_edit_theme_name_dialog);
+                                    themeNameEditText.setText(customTheme.name);
+                                    themeNameEditText.requestFocus();
+                                    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+                                    if (imm != null) {
+                                        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
+                                    }
+                                    new MaterialAlertDialogBuilder(CustomThemeListingActivity.this, R.style.MaterialAlertDialogTheme)
+                                            .setTitle(R.string.edit_theme_name)
+                                            .setView(dialogView)
+                                            .setPositiveButton(R.string.ok, (editTextDialogInterface, i1)
+                                                    -> {
+                                                if (imm != null) {
+                                                    imm.hideSoftInputFromWindow(themeNameEditText.getWindowToken(), 0);
+                                                }
+                                                if (!themeNameEditText.getText().toString().equals("")) {
+                                                    customTheme.name = themeNameEditText.getText().toString();
+                                                }
+                                                checkDuplicateAndImportTheme(customTheme, true);
+                                            })
+                                            .setNegativeButton(R.string.cancel, null)
+                                            .setOnDismissListener(editTextDialogInterface -> {
+                                                if (imm != null) {
+                                                    imm.hideSoftInputFromWindow(themeNameEditText.getWindowToken(), 0);
+                                                }
+                                            })
+                                            .show();
+                                })
+                                .setNegativeButton(R.string.override, (dialogInterface, i) -> {
+                                    checkDuplicateAndImportTheme(customTheme, false);
+                                })
+                                .show();
+                    }
+                }).execute();
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomizeThemeActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomizeThemeActivity.java
index e4847ac4..07730b0c 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomizeThemeActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CustomizeThemeActivity.java
@@ -198,7 +198,8 @@ public class CustomizeThemeActivity extends BaseActivity {
                     }
                     CustomTheme customTheme = CustomTheme.convertSettingsItemsToCustomTheme(customThemeSettingsItems, themeName);
                     new InsertCustomThemeAsyncTask(redditDataRoomDatabase, lightThemeSharedPreferences,
-                            darkThemeSharedPreferences, amoledThemeSharedPreferences, customTheme, () -> {
+                            darkThemeSharedPreferences, amoledThemeSharedPreferences, customTheme,
+                            false, () -> {
                         Toast.makeText(CustomizeThemeActivity.this, R.string.saved, Toast.LENGTH_SHORT).show();
                         EventBus.getDefault().post(new RecreateActivityEvent());
                         finish();
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CustomThemeListingRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CustomThemeListingRecyclerViewAdapter.java
index 525564b8..3addc094 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CustomThemeListingRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CustomThemeListingRecyclerViewAdapter.java
@@ -18,6 +18,7 @@ import java.util.List;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.Activity.CustomThemeListingActivity;
 import ml.docilealligator.infinityforreddit.Activity.CustomizeThemeActivity;
 import ml.docilealligator.infinityforreddit.CustomTheme.CustomTheme;
 import ml.docilealligator.infinityforreddit.Fragment.CustomThemeOptionsBottomSheetFragment;
@@ -90,7 +91,7 @@ public class CustomThemeListingRecyclerViewAdapter extends RecyclerView.Adapter<
                 activity.startActivity(intent);
             });
             ((UserCustomThemeViewHolder) holder).shareImageView.setOnClickListener(view -> {
-
+                ((CustomThemeListingActivity) activity).shareTheme(customTheme);
             });
             ((UserCustomThemeViewHolder) holder).itemView.setOnClickListener(view -> {
                 CustomThemeOptionsBottomSheetFragment customThemeOptionsBottomSheetFragment = new CustomThemeOptionsBottomSheetFragment();
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/AsyncTask/InsertCustomThemeAsyncTask.java b/app/src/main/java/ml/docilealligator/infinityforreddit/AsyncTask/InsertCustomThemeAsyncTask.java
index 5477ecbe..0eba4b1d 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/AsyncTask/InsertCustomThemeAsyncTask.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/AsyncTask/InsertCustomThemeAsyncTask.java
@@ -13,22 +13,27 @@ public class InsertCustomThemeAsyncTask extends AsyncTask<Void, Void, Void> {
     private SharedPreferences darkThemeSharedPreferences;
     private SharedPreferences amoledThemeSharedPreferences;
     private CustomTheme customTheme;
+    private boolean checkDuplicate;
     private InsertCustomThemeAsyncTaskListener insertCustomThemeAsyncTaskListener;
+    private boolean isDuplicate = false;
 
     public interface InsertCustomThemeAsyncTaskListener {
         void success();
+        default void duplicate() {}
     }
 
     public InsertCustomThemeAsyncTask(RedditDataRoomDatabase redditDataRoomDatabase,
                                       SharedPreferences lightThemeSharedPreferences,
                                       SharedPreferences darkThemeSharedPreferences,
-                                      SharedPreferences amoledThemeSharedPreferences, CustomTheme customTheme,
+                                      SharedPreferences amoledThemeSharedPreferences,
+                                      CustomTheme customTheme, boolean checkDuplicate,
                                       InsertCustomThemeAsyncTaskListener insertCustomThemeAsyncTaskListener) {
         this.redditDataRoomDatabase = redditDataRoomDatabase;
         this.lightThemeSharedPreferences = lightThemeSharedPreferences;
         this.darkThemeSharedPreferences = darkThemeSharedPreferences;
         this.amoledThemeSharedPreferences = amoledThemeSharedPreferences;
         this.customTheme = customTheme;
+        this.checkDuplicate = checkDuplicate;
         this.insertCustomThemeAsyncTaskListener = insertCustomThemeAsyncTaskListener;
     }
 
@@ -46,6 +51,12 @@ public class InsertCustomThemeAsyncTask extends AsyncTask<Void, Void, Void> {
             redditDataRoomDatabase.customThemeDao().unsetAmoledTheme();
             CustomThemeSharedPreferencesUtils.insertThemeToSharedPreferences(customTheme, amoledThemeSharedPreferences);
         }
+        if (checkDuplicate) {
+            if (redditDataRoomDatabase.customThemeDao().getCustomTheme(customTheme.name) != null) {
+                isDuplicate = true;
+                return null;
+            }
+        }
         redditDataRoomDatabase.customThemeDao().insert(customTheme);
         return null;
     }
@@ -53,6 +64,10 @@ public class InsertCustomThemeAsyncTask extends AsyncTask<Void, Void, Void> {
     @Override
     protected void onPostExecute(Void aVoid) {
         super.onPostExecute(aVoid);
-        insertCustomThemeAsyncTaskListener.success();
+        if (isDuplicate) {
+            insertCustomThemeAsyncTaskListener.duplicate();
+        } else {
+            insertCustomThemeAsyncTaskListener.success();
+        }
     }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/CustomTheme/CustomTheme.java b/app/src/main/java/ml/docilealligator/infinityforreddit/CustomTheme/CustomTheme.java
index 65409086..c05e79e0 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/CustomTheme/CustomTheme.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/CustomTheme/CustomTheme.java
@@ -5,6 +5,8 @@ import androidx.room.ColumnInfo;
 import androidx.room.Entity;
 import androidx.room.PrimaryKey;
 
+import com.google.gson.Gson;
+
 import java.util.ArrayList;
 
 @Entity(tableName = "custom_themes")
@@ -150,10 +152,17 @@ public class CustomTheme {
     @ColumnInfo(name = "is_change_status_bar_icon_color_after_toolbar_collapsed_in_immersive_interface")
     public boolean isChangeStatusBarIconColorAfterToolbarCollapsedInImmersiveInterface;
 
+    public CustomTheme() {}
+
     public CustomTheme(@NonNull String name) {
         this.name = name;
     }
 
+    public String getJSONModel() {
+        Gson gson = new Gson();
+        return gson.toJson(this);
+    }
+
     public static CustomTheme convertSettingsItemsToCustomTheme(ArrayList<CustomThemeSettingsItem> customThemeSettingsItems, String themeName) {
         CustomTheme customTheme = new CustomTheme(themeName);
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CopyTextBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CopyTextBottomSheetFragment.java
index 96bb671d..f53f6c09 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CopyTextBottomSheetFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CopyTextBottomSheetFragment.java
@@ -98,7 +98,7 @@ public class CopyTextBottomSheetFragment extends RoundedBottomSheetDialogFragmen
             clipboard.setPrimaryClip(clip);
             Toast.makeText(activity, R.string.copy_success, Toast.LENGTH_SHORT).show();
         } else {
-            Toast.makeText(activity, R.string.copy_failed, Toast.LENGTH_SHORT).show();
+            Toast.makeText(activity, R.string.copy_link_failed, Toast.LENGTH_SHORT).show();
         }
     }
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/SelectBaseThemeBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CreateThemeBottomSheetFragment.java
index 81df06c5..d92286ae 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/SelectBaseThemeBottomSheetFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CreateThemeBottomSheetFragment.java
@@ -22,25 +22,37 @@ import ml.docilealligator.infinityforreddit.R;
 /**
  * A simple {@link Fragment} subclass.
  */
-public class SelectBaseThemeBottomSheetFragment extends RoundedBottomSheetDialogFragment {
+public class CreateThemeBottomSheetFragment extends RoundedBottomSheetDialogFragment {
 
-    @BindView(R.id.light_theme_text_view_select_base_theme_bottom_sheet_fragment)
+    @BindView(R.id.import_theme_text_view_create_theme_bottom_sheet_fragment)
+    TextView importTextView;
+    @BindView(R.id.light_theme_text_view_create_theme_bottom_sheet_fragment)
     TextView lightThemeTextView;
-    @BindView(R.id.dark_theme_text_view_select_base_theme_bottom_sheet_fragment)
+    @BindView(R.id.dark_theme_text_view_create_theme_bottom_sheet_fragment)
     TextView darkThemeTextView;
-    @BindView(R.id.amoled_theme_text_view_select_base_theme_bottom_sheet_fragment)
+    @BindView(R.id.amoled_theme_text_view_create_theme_bottom_sheet_fragment)
     TextView amoledThemeTextView;
     private Activity activity;
-    public SelectBaseThemeBottomSheetFragment() {
+
+    public interface SelectBaseThemeBottomSheetFragmentListener {
+        void importTheme();
+    }
+
+    public CreateThemeBottomSheetFragment() {
         // Required empty public constructor
     }
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View rootView = inflater.inflate(R.layout.fragment_select_base_theme_bottom_sheet, container, false);
+        View rootView = inflater.inflate(R.layout.fragment_create_theme_bottom_sheet, container, false);
         ButterKnife.bind(this, rootView);
 
+        importTextView.setOnClickListener(view -> {
+            ((SelectBaseThemeBottomSheetFragmentListener) activity).importTheme();
+            dismiss();
+        });
+
         lightThemeTextView.setOnClickListener(view -> {
             Intent intent = new Intent(activity, CustomizeThemeActivity.class);
             intent.putExtra(CustomizeThemeActivity.EXTRA_CREATE_THEME, true);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CustomThemeOptionsBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CustomThemeOptionsBottomSheetFragment.java
index 7657bba9..5529a599 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CustomThemeOptionsBottomSheetFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/CustomThemeOptionsBottomSheetFragment.java
@@ -7,8 +7,6 @@ import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.inputmethod.InputMethodManager;
-import android.widget.EditText;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
@@ -16,7 +14,6 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.fragment.app.Fragment;
 
 import com.deishelon.roundedbottomsheet.RoundedBottomSheetDialogFragment;
-import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
@@ -47,8 +44,9 @@ public class CustomThemeOptionsBottomSheetFragment extends RoundedBottomSheetDia
     }
 
     public interface CustomThemeOptionsBottomSheetFragmentListener {
-        void changeName(String oldName);
-        void delete(String name);
+        void changeName(String oldThemeName);
+        void shareTheme(String themeName);
+        void delete(String themeName);
     }
 
     @Override
@@ -68,6 +66,7 @@ public class CustomThemeOptionsBottomSheetFragment extends RoundedBottomSheetDia
         });
 
         shareThemeTextView.setOnClickListener(view -> {
+            ((CustomThemeOptionsBottomSheetFragmentListener) activity).shareTheme(themeName);
             dismiss();
         });
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ShareLinkBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ShareLinkBottomSheetFragment.java
index d3c54782..4a2ed929 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ShareLinkBottomSheetFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ShareLinkBottomSheetFragment.java
@@ -130,7 +130,7 @@ public class ShareLinkBottomSheetFragment extends RoundedBottomSheetDialogFragme
             clipboard.setPrimaryClip(clip);
             Toast.makeText(activity, R.string.copy_success, Toast.LENGTH_SHORT).show();
         } else {
-            Toast.makeText(activity, R.string.copy_failed, Toast.LENGTH_SHORT).show();
+            Toast.makeText(activity, R.string.copy_link_failed, Toast.LENGTH_SHORT).show();
         }
     }
 
diff --git a/app/src/main/res/drawable-night/ic_import_day_night_24dp.xml b/app/src/main/res/drawable-night/ic_import_day_night_24dp.xml
new file mode 100644
index 00000000..eb39e3f3
--- /dev/null
+++ b/app/src/main/res/drawable-night/ic_import_day_night_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M13,5v6h1.17L12,13.17 9.83,11L11,11L11,5h2m2,-2L9,3v6L5,9l7,7 7,-7h-4L15,3zM19,18L5,18v2h14v-2z"
+      android:fillColor="#FFFFFF"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_import_day_night_24dp.xml b/app/src/main/res/drawable/ic_import_day_night_24dp.xml
new file mode 100644
index 00000000..ad852174
--- /dev/null
+++ b/app/src/main/res/drawable/ic_import_day_night_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M13,5v6h1.17L12,13.17 9.83,11L11,11L11,5h2m2,-2L9,3v6L5,9l7,7 7,-7h-4L15,3zM19,18L5,18v2h14v-2z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/app/src/main/res/layout/activity_custom_theme_listing.xml b/app/src/main/res/layout/activity_custom_theme_listing.xml
index 37b8f878..5b35b48c 100644
--- a/app/src/main/res/layout/activity_custom_theme_listing.xml
+++ b/app/src/main/res/layout/activity_custom_theme_listing.xml
@@ -4,6 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:id="@+id/coordinator_layout_custom_theme_listing_activity"
     tools:context=".Activity.CustomThemeListingActivity">
 
     <com.google.android.material.appbar.AppBarLayout
diff --git a/app/src/main/res/layout/activity_rules.xml b/app/src/main/res/layout/activity_rules.xml
index 36d057db..91f35cf2 100644
--- a/app/src/main/res/layout/activity_rules.xml
+++ b/app/src/main/res/layout/activity_rules.xml
@@ -27,7 +27,8 @@
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
                 android:background="?attr/colorPrimary"
-                app:popupTheme="@style/AppTheme.PopupOverlay" />
+                app:popupTheme="@style/AppTheme.PopupOverlay"
+                app:navigationIcon="?attr/homeAsUpIndicator" />
 
         </com.google.android.material.appbar.CollapsingToolbarLayout>
 
diff --git a/app/src/main/res/layout/activity_search_result.xml b/app/src/main/res/layout/activity_search_result.xml
index c4b132c7..63c8212e 100644
--- a/app/src/main/res/layout/activity_search_result.xml
+++ b/app/src/main/res/layout/activity_search_result.xml
@@ -14,12 +14,21 @@
         android:background="?attr/toolbarAndTabBackgroundColor"
         android:theme="@style/AppTheme.AppBarOverlay">
 
-        <androidx.appcompat.widget.Toolbar
-            android:id="@+id/toolbar_search_result_activity"
+        <com.google.android.material.appbar.CollapsingToolbarLayout
             android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize"
-            app:popupTheme="@style/AppTheme.PopupOverlay"
-            app:navigationIcon="?attr/homeAsUpIndicator" />
+            android:layout_height="match_parent"
+            app:layout_scrollFlags="scroll|enterAlways"
+            app:titleEnabled="false"
+            app:toolbarId="@+id/toolbar_search_result_activity">
+
+            <androidx.appcompat.widget.Toolbar
+                android:id="@+id/toolbar_search_result_activity"
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                app:popupTheme="@style/AppTheme.PopupOverlay"
+                app:navigationIcon="?attr/homeAsUpIndicator" />
+
+        </com.google.android.material.appbar.CollapsingToolbarLayout>
 
         <com.google.android.material.tabs.TabLayout
             android:id="@+id/tab_layout_search_result_activity"
diff --git a/app/src/main/res/layout/activity_subscribed_subreddits_multiselection.xml b/app/src/main/res/layout/activity_subscribed_subreddits_multiselection.xml
index ee0ae427..d552fb84 100644
--- a/app/src/main/res/layout/activity_subscribed_subreddits_multiselection.xml
+++ b/app/src/main/res/layout/activity_subscribed_subreddits_multiselection.xml
@@ -28,7 +28,8 @@
                 android:layout_height="?attr/actionBarSize"
                 app:layout_collapseMode="pin"
                 app:layout_scrollFlags="scroll|enterAlways"
-                app:popupTheme="@style/AppTheme.PopupOverlay" />
+                app:popupTheme="@style/AppTheme.PopupOverlay"
+                app:navigationIcon="?attr/homeAsUpIndicator" />
 
         </com.google.android.material.appbar.CollapsingToolbarLayout>
 
diff --git a/app/src/main/res/layout/activity_subscribed_thing_listing.xml b/app/src/main/res/layout/activity_subscribed_thing_listing.xml
index 183a0b61..460b1ba6 100644
--- a/app/src/main/res/layout/activity_subscribed_thing_listing.xml
+++ b/app/src/main/res/layout/activity_subscribed_thing_listing.xml
@@ -28,7 +28,8 @@
                 android:layout_height="?attr/actionBarSize"
                 app:layout_collapseMode="pin"
                 app:layout_scrollFlags="scroll|enterAlways"
-                app:popupTheme="@style/AppTheme.PopupOverlay" />
+                app:popupTheme="@style/AppTheme.PopupOverlay"
+                app:navigationIcon="?attr/homeAsUpIndicator" />
 
         </com.google.android.material.appbar.CollapsingToolbarLayout>
 
diff --git a/app/src/main/res/layout/fragment_select_base_theme_bottom_sheet.xml b/app/src/main/res/layout/fragment_create_theme_bottom_sheet.xml
index d0adbd83..c5ac6fda 100644
--- a/app/src/main/res/layout/fragment_select_base_theme_bottom_sheet.xml
+++ b/app/src/main/res/layout/fragment_create_theme_bottom_sheet.xml
@@ -11,7 +11,25 @@
         android:orientation="vertical">
 
         <TextView
-            android:id="@+id/light_theme_text_view_select_base_theme_bottom_sheet_fragment"
+            android:id="@+id/import_theme_text_view_create_theme_bottom_sheet_fragment"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_vertical"
+            android:paddingTop="16dp"
+            android:paddingBottom="16dp"
+            android:paddingStart="32dp"
+            android:paddingEnd="32dp"
+            android:text="@string/import_theme"
+            android:textColor="?attr/primaryTextColor"
+            android:textSize="?attr/font_default"
+            android:drawableStart="@drawable/ic_import_day_night_24dp"
+            android:drawablePadding="48dp"
+            android:clickable="true"
+            android:focusable="true"
+            android:background="?attr/selectableItemBackground" />
+
+        <TextView
+            android:id="@+id/light_theme_text_view_create_theme_bottom_sheet_fragment"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:gravity="center_vertical"
@@ -29,7 +47,7 @@
             android:background="?attr/selectableItemBackground" />
 
         <TextView
-            android:id="@+id/dark_theme_text_view_select_base_theme_bottom_sheet_fragment"
+            android:id="@+id/dark_theme_text_view_create_theme_bottom_sheet_fragment"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:gravity="center_vertical"
@@ -47,7 +65,7 @@
             android:background="?attr/selectableItemBackground" />
 
         <TextView
-            android:id="@+id/amoled_theme_text_view_select_base_theme_bottom_sheet_fragment"
+            android:id="@+id/amoled_theme_text_view_create_theme_bottom_sheet_fragment"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:gravity="center_vertical"
diff --git a/app/src/main/res/layout/item_user_custom_theme.xml b/app/src/main/res/layout/item_user_custom_theme.xml
index 55891961..e8c4dc65 100644
--- a/app/src/main/res/layout/item_user_custom_theme.xml
+++ b/app/src/main/res/layout/item_user_custom_theme.xml
@@ -24,21 +24,21 @@
         android:textColor="?attr/primaryTextColor" />
 
     <ImageView
-        android:id="@+id/add_image_view_item_user_custom_theme"
+        android:id="@+id/share_image_view_item_user_custom_theme"
         android:layout_width="24dp"
         android:layout_height="24dp"
         android:layout_gravity="center_vertical"
-        android:layout_marginStart="32dp"
-        android:src="@drawable/ic_add_day_night_24dp"
+        android:layout_marginStart="16dp"
+        android:src="@drawable/ic_share_24dp"
         android:background="?attr/selectableItemBackgroundBorderless" />
 
     <ImageView
-        android:id="@+id/share_image_view_item_user_custom_theme"
+        android:id="@+id/add_image_view_item_user_custom_theme"
         android:layout_width="24dp"
         android:layout_height="24dp"
         android:layout_gravity="center_vertical"
-        android:layout_marginStart="16dp"
-        android:src="@drawable/ic_share_24dp"
+        android:layout_marginStart="32dp"
+        android:src="@drawable/ic_add_day_night_24dp"
         android:background="?attr/selectableItemBackgroundBorderless" />
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 22b971ff..a28dfd34 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -431,7 +431,7 @@
     <string name="copy_link">Copy Link</string>
 
     <string name="copy_success">Copied</string>
-    <string name="copy_failed">Cannot copy the link</string>
+    <string name="copy_link_failed">Cannot copy the link</string>
     <string name="copy_text">Copy</string>
     <string name="copy_all">Copy All</string>
     <string name="copy_markdown">Copy Markdown</string>
@@ -620,6 +620,20 @@
     <string name="delete_theme_dialog_message">Are you sure to delete %1$s?</string>
     <string name="share_theme">Share Theme</string>
     <string name="change_theme_name">Change Name</string>
+    <string name="theme_copied">Copied! Paste and share it to other people.</string>
+    <string name="copy_theme_faied">Cannot copy the theme configuration</string>
+    <string name="cannot_find_theme">Cannot find this theme</string>
+    <string name="import_theme">Import Theme</string>
+    <string name="no_data_in_clipboard">Cannot find data in clipboard</string>
+    <string name="import_theme_success">Import theme successful</string>
+    <string name="parse_theme_failed">Parse Theme Failed</string>
+    <string name="share_theme_to_subreddit_dialog_title">Share it to r/Infinity_For_Reddit?</string>
+    <string name="share_theme_to_subreddit_dialog_message">The theme configuration is copied!
+        Do you want to share it to r/Infinity so that other people can use it?</string>
+    <string name="duplicate_theme_name_dialog_title">Duplicate Theme Found</string>
+    <string name="duplicate_theme_name_dialog_message">A theme in the database is also called %1$s. Do you want to change the name of this imported theme?</string>
+    <string name="rename">Rename</string>
+    <string name="override">Override</string>
 
     <string name="color_picker">Color Picker</string>
     <string name="invalid_color">Invalid Color</string>