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问题 i am new to android and i have created a login page after verifing login i get results true or false on the bases of user authentication now my goal is to show another screen on successful authentication with some new textboxes and button i mean new layout how to achieve this??? any help would be appriciated. 回答1: You want to start new activity. You can read more on initiating new Activities at Android documentation. However you might consider making a "normal" application screen and call

问题 I have tried each of variants: http://wiki.unity3d.com/index.php/ScreenCapture Afterall, simple Application.Capturescreenshot(...) is the least laggy. Please, tell me, How I can take screenshots without ANY lags? Lots of games on Android has thiis feature, so it's not impossible. 回答1: The cause of lag while taking picture is when you try to perform all steps at the same time without waiting after each step. To fix this, you perform one action and wait for many frames then perform the next

问题 I have a mediaplayer in a Music class that is called from another secondary Activity . It works fine. But when screen goes off (either by timeout or button), the music stops playing, and when coming back and try to close the activity the program goes to "App Not Responding", because an IllegalStateException at a query like mediaplayer.isPlaying() . How can I prevent the mediaplayer to stop when screen goes off? Does it have to be through a service?? Assuming that the answer is yes, I tried to

问题 I have an application with a reused activity (its used for different purposes so just tracking the activity name would not help me, thats why I want to define the screen name manually while still using the EasyTracker. My code looks like this: EasyTracker t = EasyTracker.getInstance(this); t.set(Fields.SCREEN_NAME, screenName); // MapBuilder map = MapBuilder.createAppView(); // map.set(Fields.SCREEN_NAME, screenName); // t.send(map.build()); t.activityStart(this); I got these information from

问题 One of the device screen properties that Android lets an app query is it's aspect ratio. In the examples that I have seen this property seems to have only two values - long and notlong . I am trying to reverse engineer the logic being used by Android to classify a device as having one of the two aspect ratios. To get some official data to work with, I referred to the values provided by the device definitions included in the AVD Manager tool in Android Studio, and combined that with my own

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year . I want to develop an application for Galaxy Tab and Android phones. The tab and phone UI are very different. Like in tab, we have used fragments, etc. and on the phone we want to use tabs. I am aware that by using layout-small or layout-large I can show different UIs, but what about

问题 I have simple service that running in the background and I just want to know when the user is on the lock screen or not, that way I know when to start a process. 回答1: Check out a similar question asked here. Use KeyguardManager to check if the device is locked. KeyguardManager kgMgr = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE); boolean showing = kgMgr.inKeyguardRestrictedInputMode(); 回答2: 1) You need to firstly register a BroadcastReceiver in your Service to listen when

问题 How can i add a footer that is always at the bottom of the screen even when the page contents are very small e.g of problem, lets say I have a page that doesn't have that much on display in it, the footer therefore becomes in the middle of the screen. Can I ensure that if the page doesn't have a lot of contents then the footer just be at the bottom of the screen? UPDATE I just want a footer that is at the bottom of the screen when there is not enough content to fill the whole screen (i.e I

问题 I want to set the width & height of a Window dynamically based on the user screens maximum width/height. How can I determine this programmatically? 回答1: For the primary screen: System.Windows.SystemParameters.PrimaryScreenWidth System.Windows.SystemParameters.PrimaryScreenHeight ( Note that there are also some other primary screen related properties which depend on various factors, Full* & Maximised* ) Virtual screen: SystemParameters.VirtualScreenWidth SystemParameters.VirtualScreenHeight

问题 I created a simple game in LibGDX that has multiple screens. I want to restart a certain screen after touching a restart button but I'm not sure how to do that. I made some research about this and all answers lead to not loading my assets in show() but rather in an init() method that I am not really familiar with. I want to know how can I restart a screen using this init() method . As of now I put most of my initialization in the constructor and some were initialized in methods such as the