Tweaked how the TextInput works in order to fix autocorrect.

Libraries/Components/TextInput/TextInput.js

@@ -606,21 +606,6 @@ var TextInput = React.createClass({
     var text = event.nativeEvent.text;
     this.props.onChange && this.props.onChange(event);
     this.props.onChangeText && this.props.onChangeText(text);
-
-    if (!this.refs.input) {
-      // calling `this.props.onChange` or `this.props.onChangeText`
-      // may clean up the input itself. Exits here.
-      return;
-    }
-
-    // This is necessary in case native updates the text and JS decides
-    // that the update should be ignored and we should stick with the value
-    // that we have in JS.
-    if (text !== this.props.value && typeof this.props.value === 'string') {
-      this.refs.input.setNativeProps({
-        text: this.props.value,
-      });
-    }
   },
 
   _onBlur: function(event: Event) {

Libraries/Text/RCTTextField.h

@@ -31,6 +31,7 @@
 
 - (void)textFieldDidChange;
 - (void)sendKeyValueForString:(NSString *)string;
+- (void)sendTextChangedForString:(NSString *)string;
 - (BOOL)textFieldShouldEndEditing:(RCTTextField *)textField;
 
 @end

Libraries/Text/RCTTextField.m

@@ -58,6 +58,15 @@ - (void)sendKeyValueForString:(NSString *)string
                                eventCount:_nativeEventCount];
 }
 
+- (void)sendTextChangedForString:(NSString *)string
+{
+    [_eventDispatcher sendTextEventWithType:RCTTextEventTypeChange
+                                   reactTag:self.reactTag
+                                       text:string
+                                        key:nil
+                                 eventCount:_nativeEventCount];
+}
+
 // This method is overridden for `onKeyPress`. The manager
 // will not send a keyPress for text that was pasted.
 - (void)paste:(id)sender
@@ -69,19 +78,25 @@ - (void)paste:(id)sender
 - (void)setText:(NSString *)text
 {
   NSInteger eventLag = _nativeEventCount - _mostRecentEventCount;
-  if (eventLag == 0 && ![text isEqualToString:self.text]) {
-    UITextRange *selection = self.selectedTextRange;
-    NSInteger oldTextLength = self.text.length;
-
-    super.text = text;
-
-    if (selection.empty) {
-      // maintain cursor position relative to the end of the old text
-      NSInteger offsetStart = [self offsetFromPosition:self.beginningOfDocument toPosition:selection.start];
-      NSInteger offsetFromEnd = oldTextLength - offsetStart;
-      NSInteger newOffset = text.length - offsetFromEnd;
-      UITextPosition *position = [self positionFromPosition:self.beginningOfDocument offset:newOffset];
-      self.selectedTextRange = [self textRangeFromPosition:position toPosition:position];
+  if (eventLag == 0) {
+    if (text.length == 0) {
+      // Note: If we don't set 'super.text' it doesn't clear the autocorrect state; so ensure we do this when clearing the text field or autocorrect results will just keep appending
+      super.text = text;
+    }
+    else if (![text isEqualToString:self.text]) {
+      UITextRange *selection = self.selectedTextRange;
+      NSInteger oldTextLength = self.text.length;
+
+      super.text = text;
+
+      if (selection.empty) {
+        // maintain cursor position relative to the end of the old text
+        NSInteger offsetStart = [self offsetFromPosition:self.beginningOfDocument toPosition:selection.start];
+        NSInteger offsetFromEnd = oldTextLength - offsetStart;
+        NSInteger newOffset = text.length - offsetFromEnd;
+        UITextPosition *position = [self positionFromPosition:self.beginningOfDocument offset:newOffset];
+        self.selectedTextRange = [self textRangeFromPosition:position toPosition:position];
+      }
     }
   } else if (eventLag > RCTTextUpdateLagWarningThreshold) {
     RCTLogWarn(@"Native TextInput(%@) is %zd events ahead of JS - try to make your JS faster.", self.text, eventLag);

Libraries/Text/RCTTextFieldManager.m

@@ -37,9 +37,16 @@ - (BOOL)textField:(RCTTextField *)textField shouldChangeCharactersInRange:(NSRan
     [textField sendKeyValueForString:string];
   }
 
-  if (textField.maxLength == nil || [string isEqualToString:@"\n"]) {  // Make sure forms can be submitted via return
+  if ([string isEqualToString:@"\n"]) {  // Make sure forms can be submitted via return
     return YES;
   }
+
+  if (textField.maxLength == nil) {
+    NSMutableString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
+
+    [textField sendTextChangedForString:newString];
+    return NO;
+  }
   NSUInteger allowedLength = textField.maxLength.integerValue - textField.text.length + range.length;
   if (string.length > allowedLength) {
     if (string.length > 1) {
@@ -56,7 +63,10 @@ - (BOOL)textField:(RCTTextField *)textField shouldChangeCharactersInRange:(NSRan
     }
     return NO;
   } else {
-    return YES;
+    NSMutableString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
+
+    [textField sendTextChangedForString:newString];
+    return NO;
   }
 }