lifecycle

I have a shared resource with high initialisation cost and thus I want to access it across the system (it's used for some instrumentation basically, so has to be light weight). So I created a module managing the setup and access to it. It does a lazy initialise of the resource and stores it in a module global variable. I then use functions of this module across the system to operate on the resource. - Now I am wondering whether (or how often) I will have to reinitialise the resource? - I know objects are garbage collected in CPython on (or better around) zero reference count, but is storing in

If i call mvn clean install maven knows that clean is a lifecycle and install is a phase of the default lifecycle if i call mvn deploy maven will execute all phases of the default lifecycle sequentially. Is there a way to call the default lifecycle by giving a lifecyle name (instead of executing the last phsae of the lifecycle)? EDIT: So the question is: is there a command mvn lifecyclename that start execution of the default lifecycle? There is no command to run a lifecycle based on lifecycle name. So you can't do a mvn Default and expect it to run upto Default:deploy . You will have to

The is an fragment that display the video. This fragment can either 1) open a new activity on click button 2) replace with another fragment by calling fragmentManager.beginTransaction().replace(R.id.container, f).addToBackStack(tag).commit(); for the 1) case , I would like to call player.stopPlayBack() to stop the video playing at backing And for the 2) case , I would like to call player.stopPlayBack() and player.release() to terminate the player The problem is , what event I should call for the case 1) and 2)? I try using onPause or onStop but both of them seems has not fired. How to fix it?

Let's say my application is up and running. I then go to my devices home screen. Navigate to Settings>>Applications>>ManageApplications , choose my application, and press Force stop . Which Activity method will be called the next time I open the application? Before I am attacked for not checking myself, I have numerous Log statements in my onCreate , onStart and onResume methods but literally none of them are shown in LogCat when the application is re-opened. If you know the answer to what state Force stop puts my Application to but the missing Log statements don't make sense, please share. I

It's important to my app, becuase I want to store app UDID there, and Apple recommends to create app specific UDID starting from iOS 5.0. User defaults are persisted through updates but are not persisted through deleting and re-installing the app. At present, the keychain is persisted through deleting and re-installing the app, but it's not documented to be one way or the other, so relying on this behavior may be risky. You could also write the value to the iCloud key/value store. That will be persisted across all installations of the app for that user and is kind of what it was designed for.

I'm new to this world and I need to understand some of the concepts of Backbone and Marionette. Here I'm trying to explain some of the concepts I'm learning. It would be great to having some feedback on them. The render function defines the logic for rendering a template. When it is finished, the onRender callback is called. Here I suppose the rendered view has been not attached to the DOM. It is composed by a tagName (the default is div ) that contains the template I attached to it. To explicitly insert that tag into the DOM I need to append it somewhere. Am I wrong? In general, I do the

Observing my application behavior in Android emulator, I see that EditText contents is preserved after changing screen orientation (Ctrl+F11). But TextView contents is reset to its initial value and doesn't keep latest information set by the program. Is this behavior by definition? What can I do to keep this contents? Durairaj Packirisamy Use this property in your TextView android:freezesText="true" . You can use the savedInstanceBundle to keep hold of the data by overriding two methods inside your activity, similar to below: @Override public void onSaveInstanceState(Bundle savedInstanceState)

I've been investigating why some of my controls aren't being garbage collected and noticed it's easy to prevent simple controls that inherit from ContentControl from ever being destroyed. Here's an example: Here is my custom ContentControl: public class MyCustomControl : ContentControl { public MyCustomControl() { Debug.WriteLine("Constructed"); } ~MyCustomControl() { Debug.WriteLine("Destroyed"); } } Now if I put it on a page like so: <navigation:Page x:Class="SimpleTestBed.Views.CustomControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft

Why can't the jspService() method be overridden, where as jspInit() and jspDestroy() can be overridden? This forum post explains why you cannot override jspService(). Basically, if you tried to override the jspService method, the code generated by the JSP compiler would end up with two copies of the method: the one you wrote and the one created by the compiler. This would result in a Java compilation error. 来源： https://stackoverflow.com/questions/2288514/why-cant-jspservice-be-overridden