New iphone code

You're looking for some new iPhone code!

Here are a few examples of interesting iPhone-related code snippets:

1. Swift Code:

• A simple "Hello, World!" app in Swift:

  
  import UIKit

class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() let label = UILabel(frame: CGRect(x: 100, y: 100, width: 200, height: 50)) label.text = "Hello, World!" label.textAlignment =.center view.addSubview(label) } }

* A basic calculator app in Swift:
```swift
import UIKit

class CalculatorViewController: UIViewController {
    @IBOutlet weak var displayLabel: UILabel!
    @IBOutlet weak var numberPad: UIView!

    var currentNumber: Double = 0
    var previousNumber: Double = 0
    var operation: String = ""

    @IBAction func numberPressed(_ sender: UIButton) {
        let number = sender.title(for:.normal)!
        currentNumber = currentNumber * 10 + Double(number)!
        displayLabel.text = String(currentNumber)
    }

    @IBAction func operationPressed(_ sender: UIButton) {
        operation = sender.title(for:.normal)!
        previousNumber = currentNumber
        currentNumber = 0
        displayLabel.text = "0"
    }

    @IBAction func equalsPressed(_ sender: UIButton) {
        let result = calculateResult()
        displayLabel.text = String(result)
        currentNumber = result
        previousNumber = 0
        operation = ""
    }

    func calculateResult() -> Double {
        switch operation {
        case "+":
            return previousNumber + currentNumber
        case "-":
            return previousNumber - currentNumber
        case "*":
            return previousNumber * currentNumber
        case "/":
            return previousNumber / currentNumber
        default:
            return 0
        }
    }
}

2. Objective-C Code:

• A simple "Hello, World!" app in Objective-C:

  
  #import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@end

@implementation ViewController

• (void)viewDidLoad { [super viewDidLoad]; UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 200, 50)]; label.text = @"Hello, World!"; label.textAlignment = NSTextAlignmentCenter; [self.view addSubview:label]; }

@end

* A basic calculator app in Objective-C:
```objective-c
#import <UIKit/UIKit.h>

@interface CalculatorViewController : UIViewController

@property (weak, nonatomic) IBOutlet UILabel *displayLabel;
@property (weak, nonatomic) IBOutlet UIView *numberPad;

@property (nonatomic) double currentNumber;
@property (nonatomic) double previousNumber;
@property (nonatomic, copy) NSString *operation;

- (IBAction)numberPressed:(UIButton *)sender;
- (IBAction)operationPressed:(UIButton *)sender;
- (IBAction)equalsPressed:(UIButton *)sender;

@end

@implementation CalculatorViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.currentNumber = 0;
    self.previousNumber = 0;
    self.operation = @"";
}

- (IBAction)numberPressed:(UIButton *)sender {
    NSString *number = sender.titleLabel.text;
    self.currentNumber = self.currentNumber * 10 + [number doubleValue];
    self.displayLabel.text = [NSString stringWithFormat:@"%.2f", self.currentNumber];
}

- (IBAction)operationPressed:(UIButton *)sender {
    self.operation = sender.titleLabel.text;
    self.previousNumber = self.currentNumber;
    self.currentNumber = 0;
    self.displayLabel.text = @"0";
}

- (IBAction)equalsPressed:(UIButton *)sender {
    double result = [self calculateResult];
    self.displayLabel.text = [NSString stringWithFormat:@"%.2f", result];
    self.currentNumber = result;
    self.previousNumber = 0;
    self.operation = @"";
}

- (double)calculateResult {
    switch (self.operation) {
        case @"+":
            return self.previousNumber + self.currentNumber;
        case @"-":
            return self.previousNumber - self.currentNumber;
        case @"*":
            return self.previousNumber * self.currentNumber;
        case @"/":
            return self.previousNumber / self.currentNumber;
        default:
            return 0;
    }
}

@end

These are just a few examples of iPhone-related code snippets. If you have a specific question or need help with a particular problem, feel free to ask!