相关疑难解决方法(0)

所以我有一个UIAlertController与UITextField添加的输入,但由于某些原因,文本框似乎远远小于它应该是.知道为什么吗？

这是截图

这是守则

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"This is title"
                                                               message:@"This is message"
                                                        preferredStyle:UIAlertControllerStyleAlert];

[alert addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {

    textField.keyboardType = UIKeyboardTypeNumberPad;
    textField.placeholder = @"I am a placeholder";

}];


UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"Submit"
                                              style:UIAlertActionStyleDefault
                                            handler:nil];

[alert addAction:okAction];


[self presentViewController:alert animated:YES completion:nil];

谢谢!