add missing function (#20250)

Author: minggo

cocos/platform/ios/CCEAGLView-ios.h

@@ -130,6 +130,7 @@ Copyright (C) 2008 Apple Inc. All Rights Reserved.
 -(void) doAnimationWhenKeyboardMoveWithDuration:(float) duration distance:(float) dis;
 -(void) doAnimationWhenAnotherEditBeClicked;
 
-- (void) showKeyboard;
-- (void) hideKeyboard;
+-(void) showKeyboard;
+-(void) hideKeyboard;
+-(BOOL) isKeyboardShown;
 @end

cocos/platform/ios/CCEAGLView-ios.mm

@@ -77,9 +77,7 @@ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 #define IOS_MAX_TOUCHES_COUNT     10
 
 @interface CCEAGLView ()
-@property (nonatomic) UIView* textInputView;
-- (BOOL) setupSurfaceWithSharegroup:(EAGLSharegroup*)sharegroup;
-- (unsigned int) convertPixelFormat:(NSString*) pixelFormat;
+@property (nonatomic) CCInputView* textInputView;
 @end
 
 @implementation CCEAGLView
@@ -466,6 +464,11 @@ - (void) hideKeyboard
     [self.textInputView removeFromSuperview];
 }
 
+-(BOOL) isKeyboardShown
+{
+    return [self.textInputView isKeyboardShown];
+}
+
 -(void) doAnimationWhenKeyboardMoveWithDuration:(float) duration distance:(float) dis
 {
 

cocos/platform/ios/CCInputView-ios.h

@@ -1,4 +1,5 @@
 #import <UIKit/UIKit.h>
 
 @interface CCInputView : UIView <UITextInput>
+@property(nonatomic) BOOL isKeyboardShown;
 @end

cocos/platform/ios/CCInputView-ios.mm

@@ -5,7 +5,6 @@
 @interface CCInputView ()
 
 @property(nonatomic) NSString* myMarkedText;
-@property(nonatomic) BOOL isKeyboardShown;
 
 @end
 
@@ -332,6 +331,7 @@ - (void)onUIKeyboardNotification:(NSNotification *)notif
     else if (UIKeyboardDidShowNotification == type)
     {
         //CGSize screenSize = self.window.screen.bounds.size;
+        self.isKeyboardShown = YES;
         dispatcher->dispatchKeyboardDidShow(notiInfo);
     }
     else if (UIKeyboardWillHideNotification == type)
@@ -340,6 +340,7 @@ - (void)onUIKeyboardNotification:(NSNotification *)notif
     }
     else if (UIKeyboardDidHideNotification == type)
     {
+        self.isKeyboardShown = NO;
         dispatcher->dispatchKeyboardDidHide(notiInfo);
     }
 }