在UiTextView中插入一个数字并检测该数字

let textView = UITextView(frame: CGRect(x: 0, y: 0, width: 200, height: 100))
view.addSubview(textView)

UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(0, 0, 200, 100)];
[self.view addSubview:textView];

let number = 123
textView.text = "\(textView.text ?? "")\(number)"

NSInteger number = 123;
textView.text = [NSString stringWithFormat:@"%@%ld", textView.text, (long)number];

let text = textView.text ?? ""
let pattern = "\\b\\d+\\b" // 正则表达式匹配一个或多个数字
let regex = try! NSRegularExpression(pattern: pattern, options: [])
let matches = regex.matches(in: text, options: [], range: NSRange(location: 0, length: text.utf16.count))

if matches.count > 0 {
    // 数字存在于 UiTextView 中
    print("数字存在")
} else {
    // 数字不存在于 UiTextView 中
    print("数字不存在")
}

NSString *text = textView.text;
NSString *pattern = @"\\b\\d+\\b"; // 正则表达式匹配一个或多个数字
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:0 error:nil];
NSArray<NSTextCheckingResult *> *matches = [regex matchesInString:text options:0 range:NSMakeRange(0, text.length)];

if (matches.count > 0) {
    // 数字存在于 UiTextView 中
    NSLog(@"数字存在");
} else {
    // 数字不存在于 UiTextView 中
    NSLog(@"数字不存在");
}