app authenticator key

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Android implementation Press two times back key to exit the app

Overriding the OnKeyDown () methodSystem.currenttimemillis (): The function of this method is to return the current computer time, the time of the expression format is the current computer time and GMT time (GMT) January 1, 1970 0:0 0 seconds difference in the number of millisecondsPrivate long exittime = 0;@Overridepublic boolean onKeyDown (int keycode, keyevent event) {if (keycode = = Keyevent.keycode_back event.getaction () = = Keyevent.action_down) {if ((System.currenttimemillis ()-Exittime)

Android Home key shortcut menu app restart problem "perfect solution"

Objective1, this problem troubled me n long n2, there are many solutions on the Internet, mostly set Lanchmodel although this can solve some problems, but can not be fully resolved, and I do not match the situationSolution:Programme one:1, if your program has a management activity stack, you can start logoactivity in the OnCreate to determine that the stack is the existence of other activity if it has its own direct finish + return. This is OK, but always feel a kind of unreliable feeling.Scenar

Scare Cry native app HTML5 offline storage technology, but surprisingly easy! "Low-Key reprint"

updated on the browser to take effect. a few noteworthy eventsThere are several events for offline storage objects in HTML5 that window.applicationCache require our attention:1. oncached : This event is triggered when the offline resource store is complete, and this is the document saying that I did not trigger this event when I tested it on chrome. 2. Span style= "FONT-SIZE:14PX;" >onchecking 3. ondownloading : This event is triggered when the browser starts downloading offline resources

Two key to creating a cool, practical app for dynamic performance

Editor's note: The dynamic effect has clearly become a new trend of mobile internet products, how to design interesting and attractive dynamic effect has become a new task for designers. Different products are suitable for different types of dynamic effects, some products are suitable for the cool effect, and some are not suitable. Remember not to design showy as flashy, but as a new way to improve the user experience. Mobile internet age has arrived, the a

IOS ---------- The app & #39; s Info. plist must contain an NSPhotoLibraryUsageDescription key, contain

IOS ---------- The app's Info. plist must contain an NSPhotoLibraryUsageDescription key, contain This app has crashed because it attempted to access privacy-sensitive data without a usage description. the app's Info. plist must contain an NSPhotoLibraryUsageDescription key with a string value explaining to the user how the a

Android app Back key listening and processing instances

MainActivity is as follows: Copy codeThe Code is as follows: package cn. testnbackpressed; Import android. OS. Bundle; Import android. view. KeyEvent; Import android. app. Activity; /** * Demo description: * Process the Back key press event * * Note: * Do not use the following two methods together */ Public class MainActivity extends Activity { @ Override Protected void onCreate (Bundle savedInstanceState

C # reads the App. Config Profile node key value and prompts the solution to "Configure system failed to initialize" error

Create a new C # project, add the appsettings key in App. Config, and run with the error "configuration system failed to initialize", MSDN writes that if the configuration file contains configsections elements, the configsections element must be The first child element of a configuration element. ", it is normal to put the appsettings you added to configsections.C # reads the

Take care of the five key points of app redesign

Material design of the east wind blew a wave, but the market based on Material designed products are still very few, today not easy to capture a @teambition, surprise, design and product team in the process of redesign summed up five key points, Pro-Test are very practical, want to keep up with the trend of the designers to learn from it! Lead @Teambition: The Material design advocates a real-world interactive experience that applies to

Ionic double eject key to exit the app

-exit when deciding which page to be in if($location. Path () = = '/tab/home ') { if($rootScope. backbuttonpressedoncetoexit) {ionic. Platform.exitapp (); } Else{$rootScope. backbuttonpressedoncetoexit=true; Cordova.plugins.Toast.showShortTop (' Press again to exit the system '); SetTimeout (function() {$rootScope. Backbuttonpressedoncetoexit=false; }, 2000); } } Else if($ionicHistory. Backview

Signing identities, Missing Private Key, cannot sign App

This problem occurs after reinstalling the system, missing the previous private key and so on. So the solution is the revoke and request of the hint.Go to developer Center to find the corresponding certificate in certificate and revoke, this feature can only be used in Safari or other supported browsers. And then it succeeds. Generate a new certificate in the keychain and thenSelect Add new Certificate in center and the download will be OK after the b

Android App monitors the keyboard buttons in three ways and changes the keyboard's bottom right corner to determine the key style, androidapp

Android App monitors the keyboard buttons in three ways and changes the keyboard's bottom right corner to determine the key style, androidapp ActionNone: Enter key. Press the button and move the cursor to the next line.ActionGo: Go,ActionSearch: magnifiersActionSend: SendActionNext: NextActionDone: Done, OK/complete, hide the keyboard, even if it is not the last

In the Android app, the listener presses the Home Key.

A requirement in the recent project is to determine whether our application is placed in the background. In the past, we simply thought that we could determine whether onuserleavehint () was executed in activty, this is a lie to the description of this method. The description is as follows: Called as part of the activity lifecycle when an activity is about to go into the background as the result of user choice. For example,When the user presses the Home ke

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