The textInput used to flicker on IOS 8 when its content size was greater than its frame.

matrixConsole/matrixConsole/Base.lproj/Main.storyboard

@@ -329,7 +329,7 @@
                                             <action selector="onButtonPressed:" destination="msb-ol-2LB" eventType="touchUpInside" id="YtT-Cb-ZPk"/>
                                         </connections>
                                     </button>
-                                    <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="UVo-EY-Nyg" customClass="HPGrowingTextView">
+                                    <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="UVo-EY-Nyg" customClass="ConsoleGrowingTextView">
                                         <rect key="frame" x="38" y="8" width="510" height="28"/>
                                     </view>
                                     <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Icg-kc-a2c">

matrixConsole/matrixConsole/Model/ConsoleGrowingTextView.h

@@ -0,0 +1,21 @@
+/*
+ Copyright 2014 OpenMarket Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+#import <MatrixSDK/MatrixSDK.h>
+
+#import "HPGrowingTextView.h"
+
+@interface ConsoleGrowingTextView : HPGrowingTextView
+@end

matrixConsole/matrixConsole/Model/ConsoleGrowingTextView.m

@@ -0,0 +1,67 @@
+/*
+ Copyright 2014 OpenMarket Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "ConsoleGrowingTextView.h"
+
+@implementation ConsoleGrowingTextView
+
+// override theses two methods to fix a weird IOS 8 issue
+// it seems that the textview must be a little smaller than its superview
+// else when MaxHeght is reached, the text scrolls up because setContentSize is called
+// 1 - with a wrong contentSize < frame height so scroll to the top
+// 2 - with the right content : resetScrollPositionForIOS7 fix the content Offset
+// so center the textView in its superView
+
+-(void)resizeTextView:(NSInteger)newSizeH
+{
+    if ([delegate respondsToSelector:@selector(growingTextView:willChangeHeight:)]) {
+        [delegate growingTextView:self willChangeHeight:newSizeH + self.layer.cornerRadius];
+    }
+    
+    CGRect internalTextViewFrame = self.frame;
+    internalTextViewFrame.size.height = newSizeH + self.layer.cornerRadius; // + padding
+    self.frame = internalTextViewFrame;
+    
+    internalTextViewFrame.size.height = newSizeH - self.layer.cornerRadius;
+    
+    internalTextViewFrame.origin.y = contentInset.top - contentInset.bottom;
+    internalTextViewFrame.origin.x = contentInset.left;
+    
+    if(!CGRectEqualToRect(self.internalTextView.frame, internalTextViewFrame)) {
+        self.internalTextView.frame = internalTextViewFrame;
+    }
+}
+
+-(void)layoutSubviews
+{
+    [super layoutSubviews];
+    
+    CGRect r = self.bounds;
+    r.origin.y = 0;
+    r.origin.x = contentInset.left;
+    r.size.width -= contentInset.left + contentInset.right;
+    
+    if (self.hasText) {
+        r.origin.y += self.layer.cornerRadius / 2;
+        r.size.height -= self.layer.cornerRadius;
+    }
+    
+    if (!CGRectEqualToRect(r,  self.internalTextView.frame )) {
+        self.internalTextView.frame = r;
+    }
+}
+
+@end

matrixConsole/matrixConsole/ViewController/RoomViewController.m

@@ -31,6 +31,8 @@
 #import "MediaManager.h"
 #import "ConsoleTools.h"
 
+#import "ConsoleGrowingTextView.h"
+
 #define ROOMVIEWCONTROLLER_TYPING_TIMEOUT_SEC 10
 
 #define ROOMVIEWCONTROLLER_UPLOAD_FILE_SIZE 5000000
@@ -114,7 +116,7 @@ NSString *const kCmdResetUserPowerLevel = @"/deop";
 @property (weak, nonatomic) IBOutlet UITableView *messagesTableView;
 @property (weak, nonatomic) IBOutlet UIView *controlView;
 @property (weak, nonatomic) IBOutlet UIButton *optionBtn;
-@property (weak, nonatomic) IBOutlet HPGrowingTextView *messageTextView;
+@property (weak, nonatomic) IBOutlet ConsoleGrowingTextView *messageTextView;
 @property (weak, nonatomic) IBOutlet UIButton *sendBtn;
 @property (weak, nonatomic) IBOutlet NSLayoutConstraint *messagesTableViewBottomConstraint;
 @property (weak, nonatomic) IBOutlet NSLayoutConstraint *controlViewBottomConstraint;
@@ -174,6 +176,7 @@ NSString *const kCmdResetUserPowerLevel = @"/deop";
     self.messageTextView.layer.borderWidth = 1;
     self.messageTextView.layer.borderColor = [UIColor lightGrayColor].CGColor;
     self.messageTextView.clipsToBounds = YES;
+    self.messageTextView.backgroundColor = [UIColor whiteColor];
     lastEditedText = self.messageTextView.text;
 }