Get int from textField

I'm new to cocoa. I create project where I have one textField and one button. I make function for button, where I start my other function and it's ok. But I need to take number value from textField as parameter for my function...like this:

@implementation AppControlle开发者_如何学Pythonr

- (IBAction)StartReconstruction:(id)sender {
    int RecLine = //here i need something like textField1.GetIntValue();
    drawGL(RecLine);
}
@end

In IB I only create number formated text field. But I don't know how to call it from code :(

thanks for help

---

Have you connected the textfield between your code and IB? You will need to define the ivar and property in your @interface declaration, like this:

@interface BlahBlah {
    UITextField *textField1;
}
@property (nonatomic, retain) IBOutlet UITextField *textField1;


...
@end

After you have declared your ivar and connected it to your text box in IB (search google to see how), you can simply call

[textField1.text intValue];

to get the integer value of the string in the textbox (mind you, this is quick and dirty and does not validate the input).

---

you don't have to get text value first. NSTextField inherits from NSControl which has intValue method, so...

-(IBAction)buttonClicked:(id)sender
{
    int intVal = [textField intValue];
    NSLog (@"Int value is %i", intVal);
}

---

Have you created an IBOutlet for the textfield so you can connect it in Interface Builder? If not, then you need to add a textfield instance to your header file and make it a synthesized property. In your header:

@interface AppController
{
    NSTextField *myTextField;
}

@property (nonatomic, retain) IBOutlet NSTextField *myTextField;

And in your implementation:

@synthesize myTextField;

Then in IB, control-click drag from the textfield to "File's Owner". A popup menu will appear and you should be able to connect it to "myTextField".

To get the int value, you should be able to do:

[myTextField.stringValue intValue]

---

You should be able to do:

int RecLine = [textField1.text intValue];

This is assuming your textField1 has something that can be converted to an integer.

---

To use properties you will need to change your project's base SDK to OS X 10.5 or higher. Check this menu:

Project > Edit Project Settings > Build > Base SDK