try delaying init of clipboard and emoji views

app/src/main/java/org/dslul/openboard/inputmethod/compat/TabHostCompat.java

@@ -7,13 +7,9 @@
 package org.dslul.openboard.inputmethod.compat;
 
 import android.content.Context;
-import android.content.res.Resources;
 import android.util.AttributeSet;
 import android.widget.TabHost;
 
-import org.dslul.openboard.inputmethod.latin.R;
-import org.dslul.openboard.inputmethod.latin.utils.ResourceUtils;
-
 /*
  * Custom version of {@link TabHost} that triggers its {@link TabHost.OnTabChangeListener} when
  * a tab is reselected. It is hacky but it avoids importing material widgets lib.

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/KeyboardSwitcher.java

@@ -573,8 +573,9 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         mEmojiTabStripView = mCurrentInputView.findViewById(R.id.emoji_tab_strip);
         mClipboardStripView = mCurrentInputView.findViewById(R.id.clipboard_strip);
         mSuggestionStripView = mCurrentInputView.findViewById(R.id.suggestion_strip_view);
-        mEmojiPalettesView.initialStart();
+        // todo: try delaying, it's not needed at this point
-        mClipboardHistoryView.initialStart();
+        //  but when initializing right before showing, selected emoji category is not colored correctly
+        mEmojiPalettesView.initialize();
 
         return mCurrentInputView;
     }

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/clipboard/ClipboardHistoryView.kt

@@ -40,6 +40,7 @@ class ClipboardHistoryView @JvmOverloads constructor(
     private val functionalKeyBackgroundId: Int
     private val keyBackgroundId: Int
     private val spacebarBackground: Drawable
+    private var initialized = false
 
     private lateinit var clipboardRecyclerView: ClipboardHistoryRecyclerView
     private lateinit var placeholderView: TextView
@@ -79,7 +80,8 @@ class ClipboardHistoryView @JvmOverloads constructor(
     }
 
     @SuppressLint("ClickableViewAccessibility")
-    fun initialStart() { // needs to be delayed for access to ClipboardStrip, which is not a child of this view
+    private fun initialize() { // needs to be delayed for access to ClipboardStrip, which is not a child of this view
+        if (initialized) return
         val colors = Settings.getInstance().current.mColors
         clipboardAdapter = ClipboardAdapter(clipboardLayoutParams, this).apply {
             itemBackgroundId = keyBackgroundId
@@ -119,6 +121,7 @@ class ClipboardHistoryView @JvmOverloads constructor(
             colors.setBackground(it, ColorType.TOOL_BAR_KEY)
         }
         colors.setBackground(clipboardStrip, ColorType.BACKGROUND)
+        initialized = true
     }
 
     private fun setupAlphabetKey(key: TextView, label: String, params: KeyDrawParams) {
@@ -166,6 +169,7 @@ class ClipboardHistoryView @JvmOverloads constructor(
             keyVisualAttr: KeyVisualAttributes?,
             iconSet: KeyboardIconsSet
     ) {
+        initialize()
         setupToolbarKeys()
         historyManager.prepareClipboardHistory()
         historyManager.setHistoryChangeListener(this)
@@ -194,6 +198,7 @@ class ClipboardHistoryView @JvmOverloads constructor(
     }
 
     fun stopClipboardHistory() {
+        if (!initialized) return
         clipboardRecyclerView.adapter = null
         clipboardHistoryManager?.setHistoryChangeListener(null)
         clipboardHistoryManager = null

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/emoji/EmojiCategory.java

@@ -134,7 +134,9 @@ final class EmojiCategory {
             mCategoryNameToIdMap.put(sCategoryName[i], i);
             mCategoryTabIconId[i] = emojiPaletteViewAttr.getResourceId(sCategoryTabIconAttr[i], 0);
         }
+    }
 
+    public void initialize() {
         int defaultCategoryId = EmojiCategory.ID_SMILEYS_EMOTION;
         addShownCategoryId(EmojiCategory.ID_RECENTS);
         addShownCategoryId(EmojiCategory.ID_SMILEYS_EMOTION);

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/emoji/EmojiPalettesView.java

@@ -63,6 +63,7 @@ import static org.dslul.openboard.inputmethod.latin.common.Constants.NOT_A_COORD
 public final class EmojiPalettesView extends LinearLayout
         implements OnTabChangeListener, View.OnClickListener, View.OnTouchListener,
         OnKeyEventListener {
+    private boolean initialized = false;
     private final int mFunctionalKeyBackgroundId;
     private final Drawable mSpacebarBackground;
     private final boolean mCategoryIndicatorEnabled;
@@ -155,7 +156,9 @@ public final class EmojiPalettesView extends LinearLayout
         host.addTab(tspec);
     }
 
-    public void initialStart() { // needs to be delayed for access to EmojiTabStrip, which is not a child of this view
+    public void initialize() { // needs to be delayed for access to EmojiTabStrip, which is not a child of this view
+        if (initialized) return;
+        mEmojiCategory.initialize();
         mTabHost = KeyboardSwitcher.getInstance().getEmojiTabStrip().findViewById(R.id.emoji_category_tabhost);
         mTabHost.setup();
         for (final EmojiCategory.CategoryProperties properties : mEmojiCategory.getShownCategories()) {
@@ -250,6 +253,7 @@ public final class EmojiPalettesView extends LinearLayout
         mColors.setBackground(mDeleteKey, ColorType.FUNCTIONAL_KEY_BACKGROUND);
         mColors.setBackground(mSpacebar, ColorType.SPACE_BAR_BACKGROUND);
         mEmojiCategoryPageIndicatorView.setColors(mColors.get(ColorType.EMOJI_CATEGORY_SELECTED), mColors.get(ColorType.EMOJI_CATEGORY_BACKGROUND));
+        initialized = true;
     }
 
     @Override
@@ -361,6 +365,7 @@ public final class EmojiPalettesView extends LinearLayout
     public void startEmojiPalettes(final String switchToAlphaLabel,
                                    final KeyVisualAttributes keyVisualAttr,
                                    final KeyboardIconsSet iconSet) {
+        initialize();
         final int deleteIconResId = iconSet.getIconResourceId(KeyboardIconsSet.NAME_DELETE_KEY);
         if (deleteIconResId != 0) {
             mDeleteKey.setImageResource(deleteIconResId);
@@ -377,6 +382,7 @@ public final class EmojiPalettesView extends LinearLayout
     }
 
     public void stopEmojiPalettes() {
+        if (!initialized) return;
         mEmojiPalettesAdapter.releaseCurrentKey(true);
         mEmojiPalettesAdapter.flushPendingRecentKeys();
         mEmojiRecyclerView.setAdapter(null);