smartwatch running android

How does Android determine whether an application is running in an application, or whether an application is running in a service or consumer, so as to perform some related processing. In this case, we need to get an activitymanager, which is used to manage the activity. It has a method called getrunningtasks to obtain the list of tasks currently

/*** How to determine if a service is running * *@paramMcontext *@paramServiceName * is the package name + service class name (for example: net.loonggg.testbackstage.TestService) *@returntrue to indicate that the service is not running, false*/ Public Booleanisservicework (Context mcontext, String serviceName) {BooleanIswork =false; Activitymanager Myam=(Activitymanager) mcontext. Getsystemservice (Cont

I just talked to the iOS manager today about the memory running on Android and iOS mobile apps. In fact, the nature of the two are the same, if the background application runs too much, resulting in insufficient memory of the phone, the system will determine whether the Background app view is displayed on the phone screen, if not will agree to release the application's memory, freeing up enough memory space

The Java language is known as a cross-platform, which is not a language feature, but a reason to add the JVM to the middle. Formally this JVM, which causes Java applications to run slowly, has been trying to improve performance, but at least today, it is unlikely to be faster than c/c++,object-c. Also, the most significant aspect of improving performance is that the code generates a target code like C, which is then retained and then used directly for each subsequent run.If you change the struct

For example, an Android program contains two activity, mainactivity and otheractivity,mainactivity for program-initiated activity. If the program is located in Otheractivity, click the Home button, the program returns to the desktop,In the second click of the program icon, the program will automatically restart by default, that is, to re-enter mainactivity, rather than enter the time to click the Home button in the otheractivity of the program.Workaro

Prerequisites: there are currently four small android projects, and different channel numbers may be released for promotion, therefore, we need to develop a small packaging tool for non-technical personnel to arbitrarily specify parameters for unlimited packaging. 1. Make the packaging interface into a JFrame interface as follows: The above contains the ant packaging script. For details, refer to the previous ant online packaging. 2. Copy all t

In Android development, it is sometimes necessary to determine whether the app is running on the foreground. CodeThe implementation is as follows: private Boolean isrunningforeground (context) {activitymanager AM = (activitymanager) context. getsystemservice (context. activity_service); componentname Cn = aM. getrunningtasks (1 ). get (0 ). topactivity; string currentpackagename = cn. getpackagename

17:39:41 09-20. 196: E/androidruntime (32388): Android. view. windowmanager $ badtokenexception: unable to add window -- token android. OS. binderproxy @ 45907880 is not valid; is your activity running? This bug may be caused by many situations. The main reason for my analysis is that an activity that has been finished is executed based on this activity. 1) one

" encoding= "Utf-8"?>LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"Android:paddingbottom= "@dimen/activity_vertical_margin"Android:paddingleft= "@dimen/activity_horizontal_margin"Android:paddingright= "@dimen/activity_horizontal_margin"Android:paddingtop= "@dimen/activity_vertical_margin"Tools:context= "Com.h

This error usually occurs when a cross-platform has just been created;Workaround: Right-click on the solution-the NuGet package that manages the solution; Select the Update tab--Tick xamarin.form--and click the Update button ( others do not tick ); The previous step takes some time, wait patiently for the update to complete, then close Visual Studio and restart VisualStudio; Then right-click on the solution-clean the solution and rebuild the solution; Under

The example in this article tells about Android getting the currently running class name or method. Share to everyone for your reference. The implementation methods are as follows: public static String Getcurrentmethodname () { int level = 1; Stacktraceelement[] Stacks = new Throwable (). Getstacktrace (); String methodname = Stacks[level].getmethodname (); return methodname; } public static String Get

The concept of tasks and processes in Android is a bit confusing. I saw a good article on the Internet and picked it up to record it ~~~ Http://bbs.sjtu.edu.cn/bbstcon,board,MobilePhone,reid,1288709685,file,M.1288709685.A.html My personal understanding:First, you can see that it is not a process, but a task ).Using the terminal and PS, you can see the real running Linux Process. On my milestone, there are