Android如何在应用程序重新启动时保持静态数据？

Question

I am having an abstract class having all static objects and function to store some globel data of the application during the execution session.

All data reset to null once I relaunch the application in ICS and above version with Systems's setting ALWAYS_FINISH_ACTIVITIES is set as true.

Whats the better way to mainitan data on application relaunch?

Regards,

Android IT

Editing my question: I know that Sharepreference can be a better option but I dont want to store data for multiple sessions of the application and data I am storing is huge. Regards, Android IT

Answer 1

Each Android app is running in a dependent process. When an app become background and system need memory, the app's process may be killed by system. In this situation, when app relaunch, static objects will lost.

I think use SharedPreference to maintain data is a better way.

Answer 2

您可以使用SharedPreferences http://developer.android.com/reference/android/content/SharedPreferences.html来存储数据

Answer 3

将数据存储在本地存储上似乎是合适的： http : //developer.android.com/training/basics/data-storage/index.html

Answer 4

You can store the data local using a XML file. You can read the XML File on startup with a DOM Reader

http://www.ibm.com/developerworks/library/x-android/

If you have lots of data you can use a SQLite Database

http://developer.android.com/training/basics/data-storage/databases.html

Answer 5

If there are not too much data you can keep them in SharedPreferences

You access them with PreferenceManager.getDefaultSharedPreferences()

Answer 6

Once application exit or destroy that will remove all data . if you want to access after relaunch you should save your data as per your requirement . like local or web. its deepen you. right now you can store data in preference so it will useful after relaunch the application. I think this is better for you : How to use SharedPreferences in Android to store, fetch and edit values