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CustomKeyboard/Model/KBKeyboardLayoutConfig.h

@@ -74,6 +74,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface KBKeyboardLayout : NSObject
 @property (nonatomic, strong, nullable) NSArray<KBKeyboardRowConfig *> *rows;
+@property (nonatomic, strong, nullable) NSArray<KBKeyboardRowConfig *> *shiftRows;
 @end
 
 @interface KBKeyboardLayoutConfig : NSObject

CustomKeyboard/Model/KBKeyboardLayoutConfig.m

@@ -82,7 +82,7 @@ static NSString * const kKBKeyboardLayoutI18nFileName = @"kb_keyboard_layouts_i1
 @implementation KBKeyboardLayout
 
 + (NSDictionary *)mj_objectClassInArray {
-    return @{ @"rows": [KBKeyboardRowConfig class] };
+    return @{ @"rows": [KBKeyboardRowConfig class], @"shiftRows": [KBKeyboardRowConfig class] };
 }
 
 @end

CustomKeyboard/View/KBKeyboardView.m

@@ -127,7 +127,14 @@ static const CGFloat kKBLettersRow2EdgeSpacerMultiplier = 0.5;
     }
 
     KBKeyboardLayout *layout = [self kb_currentLayout];
-    NSArray<KBKeyboardRowConfig *> *rows = layout.rows ?: @[];
+    NSArray<KBKeyboardRowConfig *> *rows = nil;
+    
+    if (self.shiftOn && layout.shiftRows.count > 0) {
+        rows = layout.shiftRows;
+    } else {
+        rows = layout.rows ?: @[];
+    }
+    
     if (rows.count < 4) {
         [self kb_buildLegacyLayout];
         return;