清理键盘emoji内存高的问题

CustomKeyboard/View/EmojiView/KBEmojiPanelView.h

@@ -30,6 +30,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// 高亮指定分类
 - (void)selectCategoryAtIndex:(NSInteger)index;
 
+/// 释放 emoji 数据缓存（隐藏面板时可用）
+- (void)purgeEmojiCache;
+
 @end
 
 NS_ASSUME_NONNULL_END

CustomKeyboard/View/EmojiView/KBEmojiPanelView.m

@@ -185,6 +185,15 @@
     [self updateSelectionToIndex:preserved];
 }
 
+- (void)purgeEmojiCache {
+    [self.dataProvider purgeLargeCaches];
+    self.categories = @[];
+    self.currentIndex = NSNotFound;
+    self.titleLabel.text = @"";
+    [self rebuildTabButtons];
+    [self.collectionView reloadData];
+}
+
 - (void)rebuildTabButtons {
     UIStackView *stackView = self.bottomBar.tabStackView;
     if (!stackView) { return; }

CustomKeyboard/View/KBKeyBoardMainView.m

@@ -66,14 +66,7 @@
             make.bottom.equalTo(self.mas_bottom).offset(-bottomInset);
         }];
 
-        self.emojiView = [[KBEmojiPanelView alloc] init];
-        self.emojiView.hidden = YES;
-        self.emojiView.alpha = 0.0;
-        self.emojiView.delegate = self;
-        [self addSubview:self.emojiView];
-        [self.emojiView mas_makeConstraints:^(MASConstraintMaker *make) {
-            make.edges.equalTo(self);
-        }];
+        // emoji 面板改为按需创建
 
 //        [self.topBar mas_makeConstraints:^(MASConstraintMaker *make) {
 //            make.left.right.equalTo(self);
@@ -116,9 +109,10 @@
     if (self.emojiPanelVisible == visible) return;
     self.emojiPanelVisible = visible;
     if (visible) {
-        [self.emojiView reloadData];
-        self.emojiView.hidden = NO;
-        [self bringSubviewToFront:self.emojiView];
+        KBEmojiPanelView *emojiView = [self emojiView];
+        [emojiView reloadData];
+        emojiView.hidden = NO;
+        [self bringSubviewToFront:emojiView];
     } else {
         self.keyboardView.hidden = NO;
         self.topBar.hidden = NO;
@@ -126,19 +120,28 @@
     }
 
     void (^changes)(void) = ^{
-        self.emojiView.alpha = visible ? 1.0 : 0.0;
+        if (self.emojiView) {
+            self.emojiView.alpha = visible ? 1.0 : 0.0;
+        }
         self.keyboardView.alpha = visible ? 0.0 : 1.0;
         self.topBar.alpha = visible ? 0.0 : 1.0;
         self.suggestionBar.alpha = visible ? 0.0 : ([self kb_shouldShowSuggestions] ? 1.0 : 0.0);
     };
     void (^completion)(BOOL) = ^(BOOL finished) {
-        self.emojiView.hidden = !visible;
+        if (self.emojiView) {
+            self.emojiView.hidden = !visible;
+        }
         self.keyboardView.hidden = visible;
         self.topBar.hidden = visible;
         if (visible) {
             self.suggestionBar.hidden = YES;
         } else {
             self.suggestionBar.hidden = ![self kb_shouldShowSuggestions];
+            if (self.emojiView) {
+                [self.emojiView purgeEmojiCache];
+                [self.emojiView removeFromSuperview];
+                self.emojiView = nil;
+            }
         }
     };
 
@@ -154,6 +157,22 @@
     [self setEmojiPanelVisible:!self.emojiPanelVisible animated:YES];
 }
 
+#pragma mark - Lazy Load
+
+- (KBEmojiPanelView *)emojiView {
+    if (!_emojiView) {
+        _emojiView = [[KBEmojiPanelView alloc] init];
+        _emojiView.hidden = YES;
+        _emojiView.alpha = 0.0;
+        _emojiView.delegate = self;
+        [self addSubview:_emojiView];
+        [_emojiView mas_makeConstraints:^(MASConstraintMaker *make) {
+            make.edges.equalTo(self);
+        }];
+    }
+    return _emojiView;
+}
+
 
 #pragma mark - KBToolBarDelegate