selector

问题 When I want to close the server, I will need to close Selector which is blocking the Thread. So, I call selector.close() from the main thread which helps to unblock selector.select(); But the selector doesn't throw ClosedSelectorException exception as it was supposed to I guess: while (true) { try { // Blocks until a 'socket' is ready registered with selector is ready. selector.select(); } catch (ClosedSelectorException ex) { // Never reached? ex.printStackTrace(); } catch (IOException ex) {

问题 I have a UIToolbar that I'm adding as an inputAccessoryView to three UITextFields with numeric keypads. On this UIToolbar I have a cancel and a done button to dismiss the keyboard as per this post: trying to add done button to Numeric keyboard. This works great for one UITextField , which can be easily identified. However, I'm trying to use the same code for three UITextFields . Here's what I have: - (void) viewDidLoad { [super viewDidLoad]; // weight, numberOfDrinks, and drinkingDuration are

问题 I have a ListView. When I click on a ListItem, I set the background of the ListItem (it's view) to another color: listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> a, View v, int position, long id) { setupDetailView(position); setupChartView(position); setupARView(position); emptyView.setVisibility(View.INVISIBLE); quotesAdapter.isSelected = true; //v.setBackgroundResource(R.drawable.stocks_selector); } }); here is my adapter: private

问题 In my app, I am displaying a map with annotations, and the user can browse the list of annotations in a table view (in a modal view controller). I am experiencing a weird bug that I can reproduce both on device and in the simulator (iOS 7 & 8). When in pitched mode, if I try to select an item in my POI table view, it does one of these : changes the map center to a random point on the map, not the selected annotation. crashes with the message that I put under (NSZombies enabled). -[_

问题 I'm using a NSTimer to run an animation (for now just call it myMethod ). However, its causing a crash. Here's the code: @implementation SecondViewController // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void) myMethod { NSLog(@"Mark Timer Fire"); } - (void)viewDidLoad { [super viewDidLoad]; NSLog(@"We've loaded scan"); [NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(myMethod:) userInfo:nil repeats:YES];

问题 How might one get a function to be called at given time and date? For example, I would like to store some values of some variables at midnight (and clear them to zero) so they can be compared with the previous days values. How might I accomplish this in Objective-C? Thanks, Jack 回答1: You've got quite a few options, depending on what you're after. The obvious place to start is NSTimer. There's also the performSelector withDelay function family. Lastly, a cool extension I sometimes use, delayed

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . let's say i have this code below: textInput = $('#outputTextInput').val(); $('#outputAdd').click(function(){ $('#status_table tr:last').after('<tr id=

问题 I want to use vector drawable with tint color selector <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:color="@color/gray_ef" android:state_enabled="false"/> <item android:color="@color/gray_ef" android:state_pressed="true"/> <item android:color="@color/app_main_blue"/> </selector> declaration in style: <style name="SocialButton"> <item name="android:layout_width">0dp</item> <item name="android:layout_height">wrap

问题 UIMenuItem selector method crashes in iOS 11 beta SDK. -[WKContentView highlightText]: unrecognized selector sent to instance 0x7f85df8f3200 Method Definition: func highlightText() { // } I try to add UIMenuItem in WKWebView, let menuItemHighlight = UIMenuItem.init(title: "Highlight", action: #selector(ContentWebkitView.highlightText)) UIMenuController.shared.menuItems = [menuItemHighlight] 回答1: I was also getting this error when I was overriding canPerformAction and checking for my custom

问题 I'm trying to select every third element of a parent with javascript and add a css class to it. Sounds pretty simple to me but I can't get it work. I found this thread which looked quite nice to me to get that done, but I'm such a wuss with javascript that my tries didn't work out: var nodes = document.getElementsByClassName("ParentsClassName").childNodes; for(i=0; i<nodes.length; i+=3) { this.className += ' newClassName'; }​ When I load this, nothing happens at all. Any fixes, eyeopeners and