Question

Consider the following code:

Here is my price calculator controller header file.

#import <Foundation/Foundation.h>
#import "PriceCalculator.h"

@interface PriceCalculatorController : UITextField {

    IBOutlet UITextField *mpgField;
    IBOutlet UITextField *milesField;
    IBOutlet UITextField *priceField;
    IBOutlet UITextField *ridersField;
    IBOutlet UITextField *splitField;

    PriceCalculator *calculator;
}


-(IBAction)calculator:(id)sender;

@end

Here is its implementation file:

#import "PriceCalculatorController.h"

@implementation PriceCalculatorController


- (IBAction)calculator:(id)sender {

    float split;

    calculator = [[PriceCalculator alloc]init];


    [calculator setMpg:[mpgField float]];
    [calculator setRiders: [ridersField float]];
    [calculator setMiles: [milesField float]];
    [calculator setPrice: [priceField float]];


    split = [calculator CalculateSplit];

    [splitField setFloatValue:split];
}
@end

It’s giving me the error:

receiver type 'UITextField' for instance message does not
declare a method with selector 'float' [4]

What’s going on?

Answer 1

#import "PriceCalculatorController.h"

@implementation PriceCalculatorController


- (IBAction)calculator:(id)sender {

    float split;

    calculator = [[PriceCalculator alloc]init];


    [calculator setMpg:[mpgField.text floatValue]];
    [calculator setRiders: [ridersField.text floatValue]];
    [calculator setMiles: [milesField.text floatValue]];
    [calculator setPrice: [priceField.text floatValue]];


    split = [calculator CalculateSplit];

    [splitField setFloatValue:split];
}
@end