Friday, April 20, 2012
Number 4: Navigating Between Views
For now, I am so glad that apple introduced storyboards. It makes it super easy to navigate between views.
The other way is to get familiar with the different initial templates that Xcode provides when starting a new project.
The other way is to get familiar with the different initial templates that Xcode provides when starting a new project.
Number 3: Passing Data Between Views and Objects
Learn the singleton design method to handle global variables.
Here is another tutorial that gives a quick introduction.
http://iphone.galloway.me.uk/iphone-sdktutorials/singleton-classes/
Here is another tutorial that gives a quick introduction.
http://iphone.galloway.me.uk/iphone-sdktutorials/singleton-classes/
Number 2: Connecting IBOutlets & User Created Views To The Files Owner
Its easy to create a Objective-C Class for a UIViewController. But how do you connect the darn thing so everything works.
Number 1: Dismissing The Keyboard after it appears
How To Dismiss the keyboard after it appears from clicking on a UITextField or UITextArea
Dismissing the keyboard was a central point of frustration
for me once I began learning XCode and the Objective-C language. The problem was that it is so easy to see the
keyboard appear with that first HelloWorld, but infinitely frustrating because
dismissing it takes a tab bit more knowledge.
The solution to dismiss the keyboard is in the following
code: resignTheFirstResponder. Of course, I did not know what a
firstResponder was and I certainly did not know how to resign it. But, there are plenty of tutorials that
simply said put this code block in the implemention file (the .m file), and
magically the keyboard would disappear.
And sure enough it did, until I started trying to make my own
UIViewControllers.
What will make your life easier is first putting in the
delegate between the greater than less than signs <UITextFieldDelegate,
UITextAreaDelegate> in the .h header file.
What this does is to inform XCode that you will want to use some of
their code so that when you begin typing it will automatically suggest the code
you with the correct syntax allowing you to avoide misspelling words.
- (BOOL)textFieldShouldReturn:(UITextField
*)textField {
[textField resignFirstResponder];
return NO;
}
[textField resignFirstResponder];
return NO;
}
I was very happy when this worked. However, I remain frustrated that when I add
this delegate information to a new viewController’s .h and .m files that the
keyboard does not go away. I can only
guess that I do not have my connection right.
Perhaps someone, can outline the steps in the next section to create and
connect a new viewcontroller to its class and IBOutlets so that the code to
dismiss the keyboard is recognized. At
the time of this writing, this is the
number one issue that frustrated me as a new developer. Not being able to dismiss the keyboard when
using Storyboards, or when creating my own ViewController class.
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