小编Ben*_*n10的帖子

如何在UIAlertController？下添加文本视图？我尝试了下面的方法，但是textview不能正确显示。

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Comments" message:@"Enter your submit comments" preferredStyle:UIAlertControllerStyleAlert];
alertController.view.autoresizesSubviews = YES;

UITextView * alertTextView = [[UITextView alloc] initWithFrame:CGRectZero];
alertTextView.translatesAutoresizingMaskIntoConstraints = NO;
alertTextView.backgroundColor = [UIColor greenColor];

NSLayoutConstraint *leadConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:alertTextView attribute:NSLayoutAttributeLeading multiplier:1.0 constant:-8.0];
NSLayoutConstraint *trailConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:alertTextView attribute:NSLayoutAttributeTrailing multiplier:1.0 constant:8.0];

NSLayoutConstraint *topConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:alertTextView attribute:NSLayoutAttributeTop multiplier:1.0 constant:-64.0];
NSLayoutConstraint *bottomConstraint = [NSLayoutConstraint constraintWithItem:alertController.view attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:alertTextView attribute:NSLayoutAttributeBottom multiplier:1.0 constant:64.0];
[alertController.view addSubview:alertTextView];
[NSLayoutConstraint activateConstraints:@[leadConstraint, trailConstraint, topConstraint, …

我有 websocket 服务器，该服务器根据我的订阅每两秒推送一次数据。我需要根据 tableview.currently 更新行，我正在使用Starscream模块进行 websocket 实现。如何每两秒更新一次特定的行值

import UIKit
import Starscream
struct Stocks: Codable {
    let changepercent: String
    let changeprice: String
    let close: String
    let currentprice: String
    let high: String
    let id: Int
    let low: String
    let name: String
    let `open`: String
    let type: String
    let instid: String
    let exchange: String
}
class ViewController: UIViewController, WebSocketDelegate,UITableViewDelegate,UITableViewDataSource {
    @IBOutlet weak var stocktableView: UITableView!

    var arrContacts = [Stocks]()
    var socket: WebSocket!

    override func viewDidLoad() {
        super.viewDidLoad()
       var request = URLRequest(url: …

我现在正在使用Joomla 2.5,并希望从一开始就看到用户登录活动.我需要的数据将是用户名和登录时间.我怎样才能获得Joomla的登录活动日志？有可用的扩展吗？

我有一些纯C++代码,我想将代码更改为客观的C代码格式.怎么能做到这里有任何工具或者我怎么能这样做.