random number & reading verifying from memory or string

Murphy · June 2012

I wanted to make a test, with 2 buttons & 1 label, 1 button generate an random number then sends that number to UILabel. But how do I read what either that random generated number is in memory, or what the value of the UILabel is? ... cause I wanted to make an button that gives a smiley if the number is 22 - just for practise purposes...

}
NSString *myString;
- (IBAction)Gen:(UIButton *)sender {
    int generate = arc4random() & 150;
    [label setText : [NSString stringWithFormat : @\" %i\", generate]];
    
    NSString *aString = [label text];
    NSLog (@\" %@\", aString);
 }

- (IBAction)seed:(UIButton *)sender {

    if (aString. = @\"22\"){
    [label2 setText : [NSString stringWithFormat : @\":)!\"]];
    }
    else {
        [label2 setText : [NSString stringWithFormat : @\":(\"]];

iAppDeveloper · June 2012

try that code

- (IBAction)Gen:(UIButton *)sender {
    int generate = arc4random() & 150;
    [label setText : [NSString stringWithFormat : @\" %i\", generate]];
 }

- (IBAction)seed:(UIButton *)sender {

    if ([label.text isEqualToString:@\"22\"]){
    [label2 setText : [NSString stringWithFormat : @\":)!\"]];
    }
    else {
        [label2 setText : [NSString stringWithFormat : @\":(\"]];
    }
}

Murphy · June 2012

It don´t seem to cut it. I need a method of reading the contents of the UILabel or a string that holds the value of UILabel...

kapps11 · June 2012

did you try the docs? Loading…

the text property is what you need. just make sure you use isEqualToString: instead of just == tho

iAppDeveloper · June 2012

Murphy;438931 said:
It don´t seem to cut it. I need a method of reading the contents of the UILabel or a string that holds the value of UILabel...

label.text holds the value because you are setting it in your - (IBAction)Gen:(UIButton *)sender method

Murphy · June 2012

dont know why its not working then... tried creating a string with the value of 1. but still no

  NSString *myString = @\"1\";
    
    if ([label.text  isEqualToString: myString]){

iAppDeveloper · June 2012

might be a stupid question but have you set label.text to 1 too?
have you linked "label" in IB or did you initialize it somewhere previous?

Murphy · June 2012

iAppDeveloper;438936 said:
might be a stupid question but have you set label.text to 1 too?
have you linked "label" in IB or did you initialize it somewhere previous?

label is declared in the header & synthesized in the implementation file. It is not intialized pre that it gets it value from the int, that generates a random number

 int generate = random() % 10;
    [label setText : [NSString stringWithFormat : @\" %i\", generate]];

now it has outputed the random value that is between 1 and 10 to the label.

iAppDeveloper · June 2012

but you have to either declare your UILabel as IBOutlet and link it with the appropriate label in IB (so it gets initialized automatically) or initialize it manually and add it as subview.
you can't set an attribute of an object that does not exist

now it has outputed the random value that is between 1 and 10 to the label.

that's actually wrong, it's a value between 0 and 9. if you want a value between 1 and 10 you have to say

int generate = random()%10 + 1;

kapps11 · June 2012

the reason they arent comparing correctly is because you put a space before the number when you set it on the label -

[label setText : [NSString stringWithFormat : @\" %i\", generate]];

but you are comparing it to one without a space -

NSString *myString = @\"1\";
    
    if ([label.text  isEqualToString: myString]){

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