lifecycle

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How can I tell difference between app in background and app closed with Android?

I am trying to find a way to tell if an application has been closed or has went to the background. I need the ability to do this with any application. I am using the AcitivityManager to poll which app[详细]

2023-04-04 09:07 分类：问答
How long can a Java servlet instance be expected to persist? Does the same instance serve all clients? Can there be multiple instances?

I\'m 开发者_如何学JAVAtrying to understand the Java servlet life cycle. How long can a Java servlet instance be expected to persist? How reliable is this? Does the same instance serve all clients? Or[详细]

2023-04-03 19:03 分类：问答
Deallocation of resources when using static members

Consider situation when we have a class with couple of static methods that use one static object. public class Person[详细]

2023-04-03 00:06 分类：问答
Life cycle of UIVIew controller+iphone

I want to clear about the life cycle of the UIVIEWCONTROLLER in iphone: - (void)viewDidLoad { [super viewDidLoad];[详细]

2023-04-02 12:54 分类：问答
Videoview Pausing and resuming

I am new to android development and I am programming a game. My game has cutsceens that play before each level starts, cutsceens which are done through videoview. My problem is, that upon an applicati[详细]

2023-04-01 22:18 分类：问答
Android: Under what circumstances would a Dialog appearing cause onPause() to be called?

A snippet from the Android Activities document(scroll down to the \"foreground lifetime\" line) says :[详细]

2023-03-31 12:26 分类：问答
Android - activities lifecycle

lets imagine this application like enclosed image. R stands for Root activity and A and B are other activities. A is for displaying of some list, B stands for displaying detail of some value. From R I[详细]

2023-03-30 03:21 分类：问答
Getting activity from utility classes

I have a common problem in my application where I extract functionality into classes that handles this functionality, and nothing else. The problem is that I often need an instance of an Activity for[详细]

2023-03-29 09:17 分类：问答
Android preferences: saving in Activity or PreferenceActivity

I have an Activity which when clicking the menu and a button appearing there, goes to a PreferenceActivity, and then loads three ListPreferences.[详细]

2023-03-27 08:00 分类：问答
What is the lifecycle and concurrency semantics of Rhino Script Engine

I am interested in the lifecycle and concurrency semantics开发者_运维百科 of (Rhino) Script Engine and associated classes. Specifically:[详细]

2023-03-25 22:26 分类：问答