小编He *_*何一非的帖子

我有问题.我遵循了很多指南,但仍然无法让我的Share按钮工作.我在ActionBar中显示了图标,但是当我按下时没有任何事情发生在android:showAsAction ="always".但是当android:showAsAction ="never"时它会起作用.我只想让分享图标始终显示在ActionBar中.我做错了什么？请帮忙

这是我的代码:

public class Main extends Activity {

    private ShareActionProvider mShareActionProvider;

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu, menu);
        MenuItem item = menu.findItem(R.id.shareButton);
        mShareActionProvider = (ShareActionProvider) item.getActionProvider();
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.shareButton:
            Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND); 
            sharingIntent.setType("text/plain");
            String shareBody = "Check it out";
            sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,"Subject");
            sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
            startActivity(Intent.createChooser(sharingIntent, "Share via"));
            return true;
        case R.id.aboutButton:
            Intent intent = new Intent(this, About.class);
            startActivity(intent);
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }
} …

我是iOS编程新手,现在我遇到了问题.

有一个登录屏幕用于[self presentViewController:loginview animated:YES completion:nil];在MasterViewController中显示它.

现在我想在之后调用一个方法(重新加载数据) [self dismissViewControllerAnimated:YES completion:nil]

这是我的代码:

[self dismissViewControllerAnimated:YES completion:^ {
   [self getPostData];                 // Reload Data
   [self.tableView reloadData];        // Reload Data
}];

但它不起作用.

(重载方法在MasterViewController中)

有人可以帮帮我吗？

所以这是字符串s:

"Hi! How are you? I'm fine. It is 6 p.m. Thank you! That's it."

我希望它们被分隔为一个数组:

["Hi", "How are you", "I'm fine", "It is 6 p.m", "Thank you", "That's it"]

这意味着分隔符应为". "+ "? "+"! "

我试过了:

let charSet = NSCharacterSet(charactersInString: ".?!")
let array = s.componentsSeparatedByCharactersInSet(charSet)

但它也将分为p.m.两个元素.结果:

["Hi", " How are you", " I'm fine", " It is 6 p", "m", " Thank you", " That's it"]

我也试过了

let array = s.componentsSeparatedByString(". ") …

我想知道我们如何在Swift中使用sort或sorted运行多维数组？

例如他们的数组:

[
    [5, "test888"],
    [3, "test663"],
    [2, "test443"],
    [1, "test123"]
]

我想通过第一个ID从低到高排序:

[
    [1, "test123"],
    [2, "test443"],
    [3, "test663"],
    [5, "test888"]
]

那我们怎么做呢？谢谢!

我想popoverPresentationController在用户点击iPad中的单元格时显示.这是我的代码:

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    if(indexPath.section == 0){
        if(indexPath.row == 0){
            let textToShare = NSLocalizedString("SHARE_MESSAGE", comment: "Message...")

            if let appStoreURL = NSURL(string: "http://www.google.com/") {
                let objectsToShare = [textToShare, appStoreURL]
                let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)

                self.presentViewController(activityVC, animated: true, completion: nil)

                if let popView = activityVC.popoverPresentationController {
                    let v = tableView as UIView
                    popView.sourceView = v
                    popView.sourceRect = v.bounds
                }
            }
        }
    }
}

这在iPad上是错误的(屏幕上没有显示).那我怎么解决呢？

PS:这是UIButton的代码,它在iPad上工作正常(在屏幕上显示):

@IBAction func shareButtonAction(sender: AnyObject) {
    let textToShare = …

目前,我有两个表视图控制器,包含一些相同的自定义tableview单元格.每个表视图控制器都有自己的自定义tableview单元格.我希望只创建一个自定义表视图单元格,可以在这两个表格视图控制器之间共享.我可以参考任何指南吗？

我想UIRequiredPassowrdViewController从另一个视图中停止一个 NSTimer SettingsTabelViewController，所以我首先创建倒计时：

class UIRequiredPassowrdViewController: UIViewController, UITextFieldDelegate {
    var timer: NSTimer?
    var remainingSeconds = 1000

    override func viewDidLoad() {
        super.viewDidLoad()

        timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: "updateTimer:", userInfo: nil, repeats: true)
    }

    func updateTimer(timer: NSTimer) {
        remainingSeconds -= 1
        println(remainingSeconds)
    }

    func StopTimerNotication(){
        println("Function Start!")
        timer?.invalidate()
        timer = nil
    }
}

然后我StopTimerNotication()从另一个角度调用函数SettingsTabelViewController：

@IBAction func myButtonClicked(sender: AnyObject) {
    println("Button Clicked")
    var myClass: UIRequiredPassowrdViewController=UIRequiredPassowrdViewController()
    myClass.StopTimerNotication()
}

我运行应用程序，日志显示正确倒计时，单击按钮并运行该功能，但计时器只是没有停止：

999
998
997
996
995
994
993
992 …

例如，我想要数组

["ABC", "ADE", "BCD", "HYD", "ZYX", "ZZZ"]

转换为：

[
    ["ABC", "ADE"],
    ["BCD"],
    ["HYD"],
    ["ZYX", "ZZZ"],
]

那么我该如何实现呢？谢谢！

救命!

我是XCode的新手,现在我遇到了一个问题.

当我在应用程序中使用以下代码并创建一个新的ViewController类LoginViewController时.

在iPhone中,该应用程序运行良好.但是当我在iPad上测试它崩溃并在日志中显示以下内容:

2014-05-06 17:05:31.289 We Love HK[38711:60b] -[LoginViewController viewControllers]: unrecognized selector sent to instance 0x10942c3d0
2014-05-06 17:05:31.291 We Love HK[38711:60b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[LoginViewController viewControllers]: unrecognized selector sent to instance 0x10942c3d0'
*** First throw call stack:
(
    0   CoreFoundation                      0x00000001019fc495 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x000000010175b99e objc_exception_throw + 43
    2   CoreFoundation                      0x0000000101a8d65d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
    3   CoreFoundation                      0x00000001019edd8d ___forwarding___ + 973
    4   CoreFoundation                      0x00000001019ed938 _CF_forwarding_prep_0 + 120
    5   We Love HK …