Question

之前我问过这个问题，但由于某种原因，它说是关闭的，但我从来没有得到正确的答案，任何人都可以帮我添加一个文本字段，如果用户在文本字段中输入数字，一旦数字达到相同的数字作为计数器，它会显示警报。

#import <UIKit/UIKit.h>

int NumberCount;

@interface ViewController : UIViewController
{
int counter;
IBOutlet UILabel *count;
}
-(IBAction)minus;
-(IBAction)plus;
-(IBAction)zero;
@end

#import "ViewController.h"


@interface ViewController ()

@end

@implementation ViewController


-(IBAction)plus {
counter=counter + 1;
count.text = [NSString stringWithFormat:@"%i",counter];
}

-(IBAction)minus {
counter=counter - 1;
count.text = [NSString stringWithFormat:@"%i",counter];
}

-(IBAction)zero {
counter=0;
count.text = [NSString stringWithFormat:@"%i",counter];
}

- (void)viewDidLoad {
counter=0;
count.text = @"0";
[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.



}

@end

我尝试添加它，但它没有工作

if (count.text == textField ) {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Congrats"
                                                    message:@"You met that number"
                                                   delegate:self
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];


}

我的ViewController.h：

 __weak IBOutlet UITextField *textField;

Answer 1

您正在将字符串与UITextField对象进行比较。您必须将count.text字符串与textField.text字符串进行比较。

试试这个：

if ([count.text isEqualToString:textField.text]) {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Congrats"
                                                    message:@"You met that number"
                                                   delegate:self
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];


}

从文本字段中获取输入

1 个答案: