Create UITextField on UIView but can not get text input - ios

Question

I am using Xcode 6 and doing a small project on iOS 8, and I need to render some text onto the View.
My method is to create a UITextField on a UIView and as long as people type onit, the app redraw the View:
- (void)viewDidLoad {
[super viewDidLoad];
self.renderTextView.textToRender = #"Please type something…";
UITextField* textField = [[UITextField alloc] initWithFrame:self.renderTextView.frame];
textField.opaque = NO;
[self.renderTextView addSubview:textField];
[textField addTarget:self action:#selector(updateLabelAndRefresh:) forControlEvents:UIControlEventEditingChanged];
}
- (void) updateLabelAndRefresh: (id)sender{
self.renderTextView.textToRender = #"Hello World";
// if text's length > 0 …
if (self.textField.text.length > 0) {
self.renderTextView.textToRender = self.textField.text;
}
[self.renderTextView setNeedsDisplay];
}
But the problem is: no matter how I try, I can not get the actual text I type on my phone. and the console showed me that the text is null. I kept googling it but I stil can not work it out.
Do you guys have any solution? Thank you ;)

Answer 1

In below some error is there, give a look.
- (void)viewDidLoad {
[super viewDidLoad];
//Here textField is local variable
UITextField* textField = [[UITextField alloc] initWithFrame:self.renderTextView.frame];
textField.opaque = NO;
}
- (void) updateLabelAndRefresh: (id)sender{
self.renderTextView.textToRender = #"Hello World";
// if text's length > 0 …
if (self.textField.text.length > 0) { //Then how come u getting self.textField here and using it as global one.
//So you won't get access to that locally defined textField in viewDidLoad method.
self.renderTextView.textToRender = self.textField.text;
}
}
Please check your code and update me about it.