how to restore data on android

/"+ context.getpackagename () + "/shared_prefs"));} /** * Clear the application database by name * * @param context * @param dbname * *public static void Cleandatabasebyname (context context, String dbname) {Context.deletedatabase (dbname);} /** * Clear the content under/data/data/com.xxx.xxx/files * * @param context * *public static void Cleanfiles (context context) {Deletefilesbydirectory (Context.get

For the development platform, if the data storage has good support, then the development of the application will have a great role in promoting. In general, there are three ways to store data: One is a file, one is a database, and the other is a network. Where files and databases may be used a little more, the file is easy to use, the program can define its own format; The database used a bit annoying lock

[Development Diary of Android in a row from scratch] (8) -- Android data storage (II) and android Data StorageLet's talk about database operations. Come On!When talking about data storage, databases have to be mentioned. Databases

occupied by the upper limit, and according to a certain policy to clear, such as DISKLRU algorithm. Android File storage directory: 1.) Apply private storage (built-in storage) How to access Detailed path Whether to request permission Context.getfiledir (); Gets the directory of files in the built-in store that can be used to store sensitive data that cannot be expos

Android Note 2-Test and data storage methods under Android, Android Data Storage Today, I will introduce another basic knowledge of Android, the testing and data storage methods under

Data storage for Android Development (I): android Data Storage Data Storage Method for Android development (1) I have been developing Android in Xiamen for two months. It's almost vale

Three File data external storage Each Android device supports a shared "external store" that you can use to save files. This could be a removable storage medium (such as an SD card) or an internal (fixed) store. Files saved to the external store are public and can be modified by the user. Note: Files on external storage devices, all applications can access it, and can even be connected directly to the compu

Android development-data storage I, android Data Storage This chapter describes simple data storage in Android development. Knowledge is mainly involved in SharedPreferences and multi-page switching of ViewPager.1. Functional Requ

Decrementrunnable implements Runnable {Private sharedata data;Public decrementrunnable (Sharedata data) {This.data = data;}public void Run () {for (int i = 0; i Data.decrement ();}}}/*** Create a thread class that is responsible for adding 1 to J** @author Administrator**/Class Incrementrunnable implements Runnable {Private sharedata

Android development-data storage II, android Data Storage This chapter continues to explain how to store and manage data in Android development. Knowledge Point: SQLite and SwipeRefreshLayout controls are refreshed.1. Functional R

Android learning notes: internal storage of data; practice Data Reading and writing; storage to Cache for reading and writing; android learning notes (1) directory structure (2) Layout file: (3) tool class for saving and reading data: FileService. java Package com. exa

Android data storage file and android Data StorageIn the previous article, we used SharedPreferences to save data in Android. SharedPreferences mainly saves the setting information of some applications or a small amount of user in

[Peer-to-peer technology] Android programmers read data from Tom to Tom (3) and android Data Summary This article introduces basic learning materials and a little bit of advanced materials in the summary (1) and (2) of the materials that Android programmers must read from T

Android client and website data interaction implementation (Http-based data acquisition method), android Client Android clients generally do not directly access the website database, but send get or post requests like a browser, and then the website returns the

Ultra-smart Android data transmission method and android Data Transmission In Android, data transmission between activities is somewhat complicated. For example, when a complex object is passed through Intent and Bundle, it must b

Summary on the data synchronization mechanism between mobile phones and watches established by Android, and android Data Synchronization Summary of Android Wear Data Synchronization Mechanism After a Bluetooth connection is establ

Android notes-data storage in Android (3), android notes The Android system integrates a lightweight database:SQLiteTherefore, Android supports databases very well and every application can use it conveniently. As an embedded data

Android data storage and android Data StorageSharedPreferences and Editor As long as SharedPreferences stores data in a format similar to configuration information, SharedPreferences stores data in a simple key-value pair. Diagram

[Android] Android mobile app data to SD, android mobile app [Android] Android mobile app data to SD You can specify it in the menifest file of the application. The ...>

Android development Note (17) data storage 2 file storage data, android file storage Android provides five data storage methods: 1. SharedPreferences 2. File Storage 3. SQLite Database 4. ContentProvider 5. Network Storage This d