diff --git a/YYText/Utility/YYTextUtilities.h b/YYText/Utility/YYTextUtilities.h
index 0c80199d..98c63825 100644
--- a/YYText/Utility/YYTextUtilities.h
+++ b/YYText/Utility/YYTextUtilities.h
@@ -233,13 +233,13 @@ static inline CGRect YYTextEmojiGetGlyphBoundingRectWithFontSize(CGFloat fontSiz
  Get the character set which should rotate in vertical form.
  @return The shared character set.
  */
-NSCharacterSet *YYTextVerticalFormRotateCharacterSet();
+NSCharacterSet *YYTextVerticalFormRotateCharacterSet(void);
 
 /**
  Get the character set which should rotate and move in vertical form.
  @return The shared character set.
  */
-NSCharacterSet *YYTextVerticalFormRotateAndMoveCharacterSet();
+NSCharacterSet *YYTextVerticalFormRotateAndMoveCharacterSet(void);
 
 
 
@@ -364,10 +364,10 @@ static inline CGFloat YYTextCGPointGetDistanceToRect(CGPoint p, CGRect r) {
 
 
 /// Get main screen's scale.
-CGFloat YYTextScreenScale();
+CGFloat YYTextScreenScale(void);
 
 /// Get main screen's size. Height is always larger than width.
-CGSize YYTextScreenSize();
+CGSize YYTextScreenSize(void);
 
 /// Convert point to pixel.
 static inline CGFloat YYTextCGFloatToPixel(CGFloat value) {
@@ -555,9 +555,9 @@ static inline CFRange YYTextCFRangeFromNSRange(NSRange range) {
 
 
 /// Returns YES in App Extension.
-BOOL YYTextIsAppExtension();
+BOOL YYTextIsAppExtension(void);
 
 /// Returns nil in App Extension.
-UIApplication * _Nullable YYTextSharedApplication();
+UIApplication * _Nullable YYTextSharedApplication(void);
 
 NS_ASSUME_NONNULL_END
diff --git a/YYText/Utility/YYTextUtilities.m b/YYText/Utility/YYTextUtilities.m
index 11eaefed..d784a416 100644
--- a/YYText/Utility/YYTextUtilities.m
+++ b/YYText/Utility/YYTextUtilities.m
@@ -13,7 +13,7 @@
 #import <Accelerate/Accelerate.h>
 #import "UIView+YYText.h"
 
-NSCharacterSet *YYTextVerticalFormRotateCharacterSet() {
+NSCharacterSet *YYTextVerticalFormRotateCharacterSet(void) {
     static NSMutableCharacterSet *set;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
@@ -56,7 +56,7 @@
     return set;
 }
 
-NSCharacterSet *YYTextVerticalFormRotateAndMoveCharacterSet() {
+NSCharacterSet *YYTextVerticalFormRotateAndMoveCharacterSet(void) {
     static NSMutableCharacterSet *set;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
@@ -99,7 +99,7 @@ static int matrix_invert(__CLPK_integer N, double *matrix) {
     return error;
 }
 
-CGAffineTransform YYTextCGAffineTransformGetFromPoints(CGPoint before[3], CGPoint after[3]) {
+CGAffineTransform YYTextCGAffineTransformGetFromPoints(CGPoint before[_Nullable 3], CGPoint after[_Nullable 3]) {
     if (before == NULL || after == NULL) return CGAffineTransformIdentity;
     
     CGPoint p1, p2, p3, q1, q2, q3;
@@ -266,7 +266,7 @@ CGRect YYTextCGRectFitWithContentMode(CGRect rect, CGSize size, UIViewContentMod
     return rect;
 }
 
-CGFloat YYTextScreenScale() {
+CGFloat YYTextScreenScale(void) {
     static CGFloat scale;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
@@ -275,7 +275,7 @@ CGFloat YYTextScreenScale() {
     return scale;
 }
 
-CGSize YYTextScreenSize() {
+CGSize YYTextScreenSize(void) {
     static CGSize size;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
@@ -290,7 +290,7 @@ CGSize YYTextScreenSize() {
 }
 
 
-BOOL YYTextIsAppExtension() {
+BOOL YYTextIsAppExtension(void) {
     static BOOL isAppExtension = NO;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
diff --git a/YYText/YYText.h b/YYText/YYText.h
index 0900d8b9..239066d9 100644
--- a/YYText/YYText.h
+++ b/YYText/YYText.h
@@ -30,6 +30,14 @@ FOUNDATION_EXPORT const unsigned char YYTextVersionString[];
 #import <YYText/NSAttributedString+YYText.h>
 #import <YYText/NSParagraphStyle+YYText.h>
 #import <YYText/UIPasteboard+YYText.h>
+#import <YYText/YYTextSelectionView.h>
+#import <YYText/UIView+YYText.h>
+#import <YYText/YYTextTransaction.h>
+#import <YYText/YYTextWeakProxy.h>
+#import <YYText/YYTextAsyncLayer.h>
+#import <YYText/YYTextMagnifier.h>
+#import <YYText/YYTextEffectWindow.h>
+#import <YYText/YYTextContainerView.h>
 #else
 #import "YYLabel.h"
 #import "YYTextView.h"
@@ -47,4 +55,12 @@ FOUNDATION_EXPORT const unsigned char YYTextVersionString[];
 #import "NSAttributedString+YYText.h"
 #import "NSParagraphStyle+YYText.h"
 #import "UIPasteboard+YYText.h"
+#import "YYTextSelectionView.h"
+#import "UIView+YYText.h"
+#import "YYTextTransaction.h"
+#import "YYTextWeakProxy.h"
+#import "YYTextAsyncLayer.h"
+#import "YYTextMagnifier.h"
+#import "YYTextEffectWindow.h"
+#import "YYTextContainerView.h"
 #endif