Question

晚上好，我是iOS新手并且有一个非常快速的问题。

我需要帮助的是如何获得我的标签＆＃34;标签＆＃34;反映＆＃34; Number＆＃34;的价值这是一个原始的int我设置为25.问题是，它显示27896而不是显示27896。我确定这是另一种数据格式的25，但任何人都可以帮我用什么代码来显示实际的int价值25？

当用户按下带有ID＆＃34;执行＆＃34;

的按钮时，我希望这种情况发生

这是我的代码。谢谢！

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

int Number = @"25";


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)Execute:(id)sender {

    Number = Number * 2;

    [_Label setText:[NSString stringWithFormat:@"%d", Number]];



}
@end

谢谢你们，你的帮助会非常渺茫。

Answer 1

首先你写

int Number = @"25";

使用

更改代码

int Number = 25;

如果你想将int显示为字符串，那么你的代码是正确的;

[_Label setText:[NSString stringWithFormat:@"%d", Number]];

Answer 2

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

int number = 25;


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)Execute:(id)sender {

    number = number * 2;

    [_Label setText:[NSString stringWithFormat:@"%d", number]];



}
@end

或

#import "ViewController.h"
@interface ViewController ()

@end

@implementation ViewController

NSNumber number = @25;


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)Execute:(id)sender {

    number = [NSNumber numberWithInt:[number intValue ] * 2];
// or
    number = @([number intValue ] * 2);

    [_Label setText:[NSString stringWithFormat:@"%@", number]];



}
@end

您所做的是，您创建了一个名为int的{{1}}（无论如何都应为Number）并为其指定了一个值{{1}的常量number对象（作为字符串）。 NSString创建一个"25"对象，其值为@25。

Answer 3

阅读此guide并使用属性。祝你好运。

将int值显示为标签

3 个答案: