Ios7 Uitextview Contentsize.Height Alternative

iOS7 UITextView contentsize.height alternative

With this following code, you can change the height of your UITextView depending of a fixed width (it's working on iOS 7 and previous version) :

- (CGFloat)textViewHeightForAttributedText:(NSAttributedString *)text andWidth:(CGFloat)width
{
    UITextView *textView = [[UITextView alloc] init];
    [textView setAttributedText:text];
    CGSize size = [textView sizeThatFits:CGSizeMake(width, FLT_MAX)];
    return size.height;
}

With this function, you will take a NSAttributedString and a fixed width to return the height needed.

If you want to calculate the frame from a text with a specific font you, need to use the following code :

- (CGSize)text:(NSString *)text sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size
{
    if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0"))
    {
        CGRect frame = [text boundingRectWithSize:size
                                          options:(NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading)
                                       attributes:@{NSFontAttributeName:font}
                                          context:nil];
        return frame.size;
    }
    else
    {
        return [text sizeWithFont:font constrainedToSize:size];
    }
}

You can add that SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO on your prefix.pch file in your project as:

#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)

You can also replace the previous test SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) by :

if ([text respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)])‌

UITextView content size different in iOS7

The content size property no longer works as it did on iOS 6. Using sizeToFit as others suggest may or may not work depending on a number of factors.

It didn't work for me, so I use this instead:

- (CGFloat)measureHeightOfUITextView:(UITextView *)textView
{
    if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1)
    {
        // This is the code for iOS 7. contentSize no longer returns the correct value, so
        // we have to calculate it.
        //
        // This is partly borrowed from HPGrowingTextView, but I've replaced the
        // magic fudge factors with the calculated values (having worked out where
        // they came from)

        CGRect frame = textView.bounds;

        // Take account of the padding added around the text.

        UIEdgeInsets textContainerInsets = textView.textContainerInset;
        UIEdgeInsets contentInsets = textView.contentInset;

        CGFloat leftRightPadding = textContainerInsets.left + textContainerInsets.right + textView.textContainer.lineFragmentPadding * 2 + contentInsets.left + contentInsets.right;
        CGFloat topBottomPadding = textContainerInsets.top + textContainerInsets.bottom + contentInsets.top + contentInsets.bottom;

        frame.size.width -= leftRightPadding;
        frame.size.height -= topBottomPadding;

        NSString *textToMeasure = textView.text;
        if ([textToMeasure hasSuffix:@"\n"])
        {
            textToMeasure = [NSString stringWithFormat:@"%@-", textView.text];
        }

        // NSString class method: boundingRectWithSize:options:attributes:context is
        // available only on ios7.0 sdk.

        NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
        [paragraphStyle setLineBreakMode:NSLineBreakByWordWrapping];

        NSDictionary *attributes = @{ NSFontAttributeName: textView.font, NSParagraphStyleAttributeName : paragraphStyle };

        CGRect size = [textToMeasure boundingRectWithSize:CGSizeMake(CGRectGetWidth(frame), MAXFLOAT)
                                                  options:NSStringDrawingUsesLineFragmentOrigin
                                               attributes:attributes
                                                  context:nil];

        CGFloat measuredHeight = ceilf(CGRectGetHeight(size) + topBottomPadding);
        return measuredHeight;
    }
    else
    {
        return textView.contentSize.height;
    }
}

How do I size a UITextView to its content on iOS 7?

I favor this minimal code change: Just add these two lines after addSubview and before grabbing the height of the frame

...
[scrollView1 addSubview: myTextView];

    [myTextView sizeToFit]; //added
    [myTextView layoutIfNeeded]; //added

CGRect frame = myTextView.frame;
...

This is tested backwards compatible with iOS 6. NOTE that it shrink-wraps the width. If you're just interested in the height and have a fixed width, just grab the new height but set the original width, and it works just as before on both iOS 6 and 7.

(Speculation: it does size to fit on iOS 7 as well, but the layout is updated later or in a separate thread, and that this forces the layout immediately so that its frame is updated in time for using its height value a few lines later in the same thread.)

NOTES:

1) You might or might not have implemented the outer container resize this way. It does seem to be a common snippet, though, and I've used it in my projects.

2) Since sizeToFit seems to work as expected on iOS 7, you likely don't need the premature addSubView. Whether it will still work on iOS 6 then is untested by me.

3) Speculation: The extra layoutIfNeeded mid-thread might be costly. The alternative as I see it is to resize the outer container on the layout callback (fired or not depending on if the OS decides whether layout is needed or not) where the outer container resize will cause another layout update. Both updates might be combined with other layout updates to be more efficient. If you do have such a solution and you can show that it is more efficient, add it as answer and I'll be sure to mention it here.

IOS7 get UITextView contentSize before viewDidAppear method is called?

You can call [self.textView layoutIfNeeded] after creating it with the appropriate frame (so it can figure out its max width) then contentSize should be representing the content.

Also: If textView is defined as weak, the text view will be gone on the next line (as ARC adds a release and the optimizer moves it up). They announced this optimization change for Debug (-O0) builds during WWDC.

UITextView Content Size too Short

I had this same problem using storyboards in iOS7.

My solution was to add this code:

    CGRect newTextViewFrame = self.textView.frame;
    newTextViewFrame.size.width = self.textView.contentSize.width + self.textView.contentInset.right + self.textView.contentInset.left;
    newTextViewFrame.size.height = self.textView.contentSize.height + self.textView.contentInset.top + self.textView.contentInset.bottom;
    self.textView.frame = newTextViewFrame;

in the viewDidAppear: view life cycle method and it was immediately sized to fit it's contents. Unfortunately, this resize happens after the view has already appeared which means that the user sees it happening.

Example:

- (void)viewDidAppear:(BOOL)animated
{
        [super viewDidAppear:animated];

        CGRect newTextViewFrame = self.textView.frame;
        newTextViewFrame.size.width = self.textView.contentSize.width + self.textView.contentInset.right + self.textView.contentInset.left;
        newTextViewFrame.size.height = self.textView.contentSize.height + self.textView.contentInset.top + self.textView.contentInset.bottom;
        self.textView.frame = newTextViewFrame;
}

The height of textView will never grow with its contentSize in Xcode 5 & iOS 7

I think you are presenting popOverView using

[popOverView presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:NO];

Please change ArrowDirections from UIPopoverArrowDirectionUp to UIPopoverArrowDirectionAny

Resizing UITextView - Height not adjusting

Here was the answer to my issue. At some point I had checked off Autolayout on my view. This effectively locked the view and didn't allow me to adjust the frame size.

If you are seeing a similar issue that the frame is not resizing try the following:

• Go to interface builder and open the view
• Click on the file inspector
• Deselect auto-layout.

This resolved my issue.

change UITextView height programmatically with the text

i think you need to do :

CGRect frame = textViewA1.frame;
frame.size.height = textViewA1.contentSize.height;
textViewA1.frame = frame;

after the addsubview:

[self.view addSubview: self.textView];

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