iOS AutoLayout - get frame size width

ios nslog autolayout
user1046037 picture user1046037 · Sep 21, 2012 · Viewed 67.1k times · Source

I am developing using iOS 6 auto layout

I would like to log a message displaying the frame width of the view.

I can see the textView on the screen.

But I get the width and height as zero, am I missing something ?

NSLog(@"textView    = %p", self.textView);
NSLog(@"height      = %f", self.textView.frame.size.height);
NSLog(@"width       = %f", self.textView.frame.size.width);

textView    = 0x882de00
height      = 0.000000
width       = 0.000000

Answer

dreamzor picture dreamzor · Jan 3, 2013

Actually, above answers are not quite right. I followed them and got zeros again and again.

The trick is to place your frame-dependent code to the viewDidLayoutSubviews method, which

Notifies the view controller that its view just laid out its subviews.

Do not forget that this method is called multiple times and is not the part of ViewController's life cycle, so be careful while using this.

Hope it will be helpful to someone.

Just wanted to add, that for my program without landscape mode NOT using Auto Layout is way much simplier... I tried, though =D

Related questions

How to print out string constant with NSLog on iOS

I have a string constant defined like this: #define kMyString @"This is my string text!"; Somewhere in the code I would like to print-out this piece of code with NSLog like that: NSLog(@"This is it: %@",kMyString); But get a …

Read More
iOS 10 doesn't print NSLogs

Nothing prints from NSLog on Xcode 8.0 beta (8S128d). printf is unchanged Here's my code: NSLog(@"hello from NSLog"); printf("hello from printf"); Here's the output on iOS 9 Simulator: 2016-06-17 09:49:10.887 calmapp-dev[28517:567025] hello from NSLog hello from printf Here's the …

Read More
Do I need to disable NSLog before release Application?

When releasing an app for iPhone, if I disable NSLog(); will it perform better?

Read More