storage emulated 0 android data

Use Database Android provides full support for SQLite databases. Any database you create in the application, and any class in the application can be accessed by name. We recommend that you create an SQLite database by creating a subclass of the sqliteopenhelper class and override the oncreate () method. In this method, you can run the SQLite command to create tables in the database. For example: Public class dictionaryopenhelper extends sqliteopenhelp

1. obtain data from the Internet: 1. Using the httpurlconnection object, we can obtain webpage data from the network. URL url = new URL ("http://www.sohu.com "); Httpurlconnection conn = (httpurlconnection) URL. openconnection (); Conn. setconnecttimeout (5*1000); // sets the connection timeout. Conn. setrequestmethod ("get"); // initiate a request in get Mode If (conn. getresponsecode ()! = 200) Throw new

The Android system provides four data storage methods. They are SharePreference, SQLite, Content Provider, and File. In Android, data is basically private and stored in the "data/package name" directory. Therefore, to share

directory on the SD card, you should place your app package name corresponding to the extended storage directory, uninstall the app can be automatically cleared. There is an upper limit on the amount of disk space occupied, and according to certain policies to clear, such as DISKLRU algorithm. Android File storage directory: 1.)ApplicationPrivate

Android 14th --- SQLite of Android heavyweight data storage --- androidsqlite Preface Unconsciously, the Android basic series has written 13 articles, which are 14th articles ~ The previous blog recorded a data

Android Development 7: simple data storage (using SharedPreferences) and file operations,Preface La la ~ Hello, everyone. Meet again ~ This blog post describes how to complete a memorandum for registration and logon, learn basic usage of SharedPreferences, learn common file operations in Android, and review programming

Storage OptionsEnglish Original: http://developer.android.com/guide/topics/data/data-storage.htmlAcquisition Date: 2015-02-06Overview of storage methods Shared Preference for simple data Internal storage for private

, strPassword; SharedPreferences user = getSharedPreferences ("user_info", 0 ); StrName = user. getString ("NAME ",""); StrPassword = user getString ("PASSWORD ",""); } Void WriteSharedPreferences (String strName, String strPassword ){ SharedPreferences user = getSharedPreferences ("user_info", 0 ); Uer. edit (); User. putString ("NAME", strName ); User. putString ("PASSWORD", strPassword ); User. commit ()

(Exception e) {e.printstacktrace (); } return content; } } Program screenshot: Provides a tool class for storing data in a file: /** * File storage Data Way Tool class * * @author zuolongsnail/public class Filesutil { /** * Save file Contents * * @param c * @param filename * @param content * Contents * /private void Writefiles ( Cont

The backup service of Android allows you to copy persistent application data to remote "Cloud" storage, so as to provide a restore point for application data and settings. If you restore the factory settings or convert the application to a new Android device, the system auto