How to make one button do two things? - ios

Question

I have a check button and 3 views, one TextField
I'd like the check button to have the ability to know which view its on,
view1 view1 or view 3. so that when the user types in the right answer the specific actions works for that view its on only!
- (IBAction)btncheck:(id)sender {
// Enter has been pressed, see if the text in the textView equals our string
NSString *answer = [_textbox.text stringByReplacingOccurrencesOfString:#"q telecom " withString:#""];
// to block user from getting incorrect answer with no text in text field
if([answer isEqualToString:#""]){
}
else
if ([answer isEqualToString:#"q telecom"]) {
//Name:Q Telecom - FIRST TEXTFIELD SAVED - This will save the answer (q telecom forever to the user) *SAVED
NSString *savestring = _textbox.text; NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:savestring forKey:#"savedstring"];
[defaults synchronize];
// String is correct, resign keyboard, xclear, and protection/shield
_keyboard.hidden = YES;
_textXclear.hidden = YES;
_protectionOutBtn.enabled = NO;
//Perfect button
[_closeone setHidden:NO];
[_wrongone setHidden:YES];
score = MAX (score +100, 1);
[scoreLabel setText:[NSString stringWithFormat:#"Σκορ: %d", score]];
// remeber that coins must always be coins = coins + numeber to add up correctly
coins = coins +5;
if(score == 100) {coins = coins + 3;}
[coinsLabel setText:[NSString stringWithFormat:#"%d", coins]];
//coin animation start
FImageWinfive.animationImages = [NSArray arrayWithObjects:[UIImage imageNamed:#"coindust2.png"],[UIImage imageNamed:#"coindust3.png"],[UIImage imageNamed:#"coindust4.png"],[UIImage imageNamed:#"coindust5.png.png"],[UIImage imageNamed:#"coindust6.png"],[UIImage imageNamed:#"coindust7.png"],[UIImage imageNamed:#"coindust8.png"],[UIImage imageNamed:#"coindust9.png"],[UIImage imageNamed:#"coindust10.png"],[UIImage imageNamed:#"coindust11.png"],[UIImage imageNamed:#"coindust12.png"], nil];
[FImageWinfive setAnimationRepeatCount:1];
FImageWinfive.animationDuration = 1.5;
FImageWinfive.animationRepeatCount = 1;
[FImageWinfive startAnimating];
//coin animation finished
_textbox.enabled = NO;
}
else {
CABasicAnimation *shake = [CABasicAnimation animationWithKeyPath:#"position"];
[shake setDuration:0.1];
[shake setRepeatCount:2];
[shake setAutoreverses:YES];
[shake setFromValue:[NSValue valueWithCGPoint:
CGPointMake(shaker.center.x - 5,shaker.center.y)]];
[shake setToValue:[NSValue valueWithCGPoint:
CGPointMake(shaker.center.x + 5, shaker.center.y)]];
[shaker.layer addAnimation:shake forKey:#"position"];
// Was not correct. Notify user, or just don't do anything
[_wrongone setHidden:NO];
score = score -3;
[scoreLabel setText:[NSString stringWithFormat:#"Σκορ: %d", score]];
//SCORE
}
if (score < 100) {
closeonechange.text = #"Σωστά!";
_imageCorP.image = [UIImage imageNamed:#"boxg_25.png"];
} else {
closeonechange.text = #"Αψογα!";
_imageCorP.image = [UIImage imageNamed:#"telioo.png"];
}

Answer 1

There may be an easier way, but here's an option.
First, in the viewController's .m file, a #property:
#interface SomeViewController()
#property (nonatomic, weak) UITextField *activeField;
#end
Now, assume all three of these text fields are delegated by this view controller:
- (void)textFieldDidBeginEditing:(UITextField*)textField {
self.activeField = textField;
}
Now in the method that handles button touch:
- (IBAction)btncheck:(id)sender {
if (self.lastActiveField == self.view1) {
// check view 1
} else if (self.lastActiveField == self.view2) {
// check view 2
} else if (self.lastActiveField == self.view3) {
// check view 3
} else {
// either no field has been selected yet or there are other text fields
// delegated by this view controller
}
}
A slightly better and clearer solution would involve using an enum and setting the text field's tags with this enum, and then in the IBAction, switching on the enum.
For example:
typedef NS_ENUM(NSInteger, ActiveFieldEnum) {
tag_VIEW1 = 100,
tag_VIEW2 = 101,
tag_VIEW3 = 102
};
A property to track the last active button:
#property (nonatomic,assign) ActiveFieldEnum lastActiveField;
Now you can set this in the storyboard or in a life-cycle method of your view controller:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
// set up your view
self.view1.tag = tag_VIEW1;
self.view2.tag = tag_VIEW2;
self.view3.tag = tag_VIEW3;
}
The text field delegate:
- (void)textFieldDidBeginEditing:(UITextField*)textField {
self.lastActiveField = textField.tag;
}
And now in the button method:
- (IBAction)btncheck:(id)sender {
switch(self.lastActiveField) {
case tag_VIEW1:
// do stuff
break;
case tag_VIEW2:
// do stuff
break;
case tag_VIEW3:
// do stuff
break;
default:
// same as the final else before
break;
}
}