fix the "Chinese character input" bug:

class/HPGrowingTextView.m

@@ -171,7 +171,7 @@ -(void)setMaxNumberOfLines:(int)n
 
     internalTextView.text = newText;
 
-    maxHeight = [self measureHeight];
+    maxHeight = [internalTextView measureHeight];
 
     internalTextView.text = saveText;
     internalTextView.hidden = NO;
@@ -208,7 +208,7 @@ -(void)setMinNumberOfLines:(int)m
 
     internalTextView.text = newText;
 
-    minHeight = [self measureHeight];
+    minHeight = [internalTextView measureHeight];
 
     internalTextView.text = saveText;
     internalTextView.hidden = NO;
@@ -259,7 +259,7 @@ - (void)textViewDidChange:(UITextView *)textView
 - (void)refreshHeight
 {
 	//size of content, so we can set the frame of self
-	NSInteger newSizeH = [self measureHeight];
+	NSInteger newSizeH = [internalTextView measureHeight];
 	if (newSizeH < minHeight || !internalTextView.hasText) {
         newSizeH = minHeight; //not smalles than minHeight
     }
@@ -346,18 +346,6 @@ - (void)refreshHeight
 	}
 }
 
-// Code from apple developer forum - @Steve Krulewitz, @Mark Marszal, @Eric Silverberg
-- (CGFloat)measureHeight
-{
-    if ([self respondsToSelector:@selector(snapshotViewAfterScreenUpdates:)])
-    {
-        return ceilf([self.internalTextView sizeThatFits:self.internalTextView.frame.size].height);
-    }
-    else {
-        return self.internalTextView.contentSize.height;
-    }
-}
-
 - (void)resetScrollPositionForIOS7
 {
     CGRect r = [internalTextView caretRectForPosition:internalTextView.selectedTextRange.end];

class/HPTextViewInternal.h

@@ -33,5 +33,5 @@
 @property (nonatomic, strong) NSString *placeholder;
 @property (nonatomic, strong) UIColor *placeholderColor;
 @property (nonatomic) BOOL displayPlaceHolder;
-
+- (CGFloat)measureHeight;
 @end

class/HPTextViewInternal.m

@@ -59,18 +59,18 @@ -(void)setContentOffset:(CGPoint)s
 	} else {
 
 		float bottomOffset = (self.contentSize.height - self.frame.size.height + self.contentInset.bottom);
-		if(s.y < bottomOffset && self.scrollEnabled){            
+		if(s.y <= bottomOffset && self.scrollEnabled){
             UIEdgeInsets insets = self.contentInset;
             insets.bottom = 8;
             insets.top = 0;
             self.contentInset = insets;            
         }
 	}
 
-    // Fix "overscrolling" bug
-    if (s.y > self.contentSize.height - self.frame.size.height && !self.decelerating && !self.tracking && !self.dragging)
+    // Fix "overscrolling" bug  + fix the "Chinese character input" bug
+    if (!self.decelerating && !self.tracking && !self.dragging){
         s = CGPointMake(s.x, self.contentSize.height - self.frame.size.height);
-
+    }
 	[super setContentOffset:s];
 }
 
@@ -123,4 +123,16 @@ -(void)setPlaceholder:(NSString *)placeholder
 	[self setNeedsDisplay];
 }
 
+// Code from apple developer forum - @Steve Krulewitz, @Mark Marszal, @Eric Silverberg
+- (CGFloat)measureHeight
+{
+    if ([self respondsToSelector:@selector(snapshotViewAfterScreenUpdates:)])
+    {
+        return ceilf([self sizeThatFits:self.frame.size].height);
+    }
+    else {
+        return self.contentSize.height;
+    }
+}
+
 @end