dual screen app for android

of the device may change at run time (such as rotating the screen, the keyboard is visible, the language environment changes, etc.), at which point the OnDestroy () method is called back, and then immediately callback the OnCreate () method, the information previously saved on the interface may disappear.The best solution is to callback the Onsaveinstancestate () and Onrestoreinstancestate () methods (or OnCreate ()). For more information on configur

Custom control series is over, make a greatest second act, fill the previous time buried a pit---"in-app language switching." App language change is a configuration, but this configuration and Android phone screen rotation is a little bit the same. When the screen rotates, i

Gettoplevelresources method of Resourcesmanager, the idea of this method is that in Resourcesmanager, all resource objects are stored in Arraymap, First, according to the current request parameters to find resources, if found on the return, otherwise create a resource object into the Arraymap. One thing to explain is why there are multiple resource objects, because there may be multiple directories in the res that fit different devices, different resolutions, different system versions, and acco

For touch screens, the native messages are nothing more than pressing, lifting, and moving. We only need to simply reload onTouch or set the touch listener setOnTouchListener for processing. However, to improve the user experience of our apps, sometimes we need to recognize users' gestures. The gesture recognition tool GestureDetector provided by Android can help us a lot. Basic The working principle of GestureDetector is that when we receive a user

Recently, I made a project similar to the QQ space to achieve the photo browsing function. I clicked images in the QQ space to zoom in to the full screen, and the effect was very good, so I made a similar effect. As follows. Signature + signature/qx + signature/XC1L3nw + signature + cq + tcTV/Signature + 1 vczus + signature/nS1NKqsaPWpNXiuPbM + Neqtq + signature + juw.vcd4kpha + Signature /Second + 2qLK70rvR + TwvcD4KPHA + second/Second/nNvM/uyr61xm1_

Solve the Problem of starting a black screen of the Activity and setting the android: javaswistranslucent incompatible activity to switch the animation. I didn't pay much attention to this issue when I was doing the APP, because when I was using other apps, I would also have a black screen flashing at the beginning of

use:Note: To better present the performance impact of the overdraw, here's a little trick--a constant refresh of the interface, so that enough GPU performance analysis diagram.as can be seen, left unmodified interface, overdraw serious, full screen red, from the GPU rendering graph, GPU draw rendering time exceeded 16ms benchmark. The main reason for so much over-drawing is the repeating background, the upper layout of the red area set the backgroun

: Launching a new app in Android secrets1. What happens when we touch the icon of an app on launcher on the Android screen?2. Where is the application execution portal?3. How did the process of a new Android application come about

Confirm that the app needs to keep the screen turned on like a game or video app. The best way to do this is to use flag_keep_screen_on in your activity. (and only in an activity, never in a service or other app component).For example:publicclassmainactivityextendsactivity{@OverrideProtectedvoid onCreate (Bundle savedi

Http://www.tuicool.com/articles/nuyMZb1 common resolutions for Android phones today1.1 Common resolutions for mobile phones:4:3VGA 640*480 (Video Graphics Array)QVGA 320*240 (Quarter VGA)HVGA 480*320 (half-size VGA)SVGA 800*600 (Super VGA)5:3WVGA 800*480 (Wide VGA)16:9FWVGA 854*480 (full Wide VGA)HD 1920*1080 High DefinitionQHD 960*540720p 1280*720 SD1080p 1920*1080 HD1.2 resolution corresponds to DPI"HVGA mdpi""WVGA hdpi""FWVGA hdpi""QHD hdpi""720P x

Use a simple drawing app to illustrate Android's graphics-processing class with its own view-defining application.For example, there is an app for users to draw and doodle at their own discretion.It's not so fancy here, it's only available in black and white. But it can change the thickness of the nib.Essentially the eraser here is a white brush, without using the brush's Setxfermode method, to get a bunch

There are two ways to get the screen width of an Android phone: one is to get the screen width through the View method, and the other is to get the screen width through the Display object. Below this article introduces very detailed, interested friends can look at the past, the original address is as follows: http://ww

②, set the phone to never lock the screen, or install the Auto Unlock app (script execution to tune the app) ③, Scheduled Tasks for Windows Execute Monkey_findyou.bat 3. Operation Record 1), double-click Execute Monkey_findyou.bat 2), script execution information 3), Ou

Android system is also an application-specific form, corresponding to the system-provided root view object.The view object is rendered in the form.Each view object of the Android system inherits from the view class, including the view and ViewGroup objects. The UI of an app is constructed from a view tree that consists of views and ViewGroup objects that are use

Web: simple-you can generate a public link, like this. (These connections can also be opened in a mobile browser and then added to the iOS home screen as an "app.") You can show your work to public users at Proto.io Spaces.On mobile: You can create a free evaluation account for users and allow them to access a project. They can run your prototypes in iOS or Android