auto sync data android

Virgins Android (13th) --- SharedPreferences and sharedpreferences for lightweight Android Data Storage I. Preface Reprinted please indicate the source: http://blog.csdn.net/wlwlwlwl015/article/details/42437007 When I was a beginner in Android, I used the Intent + Bundle mode to transfer values between activities.

); flag = True;database.settransactionsuccessful ( );} catch (SQLException e) {//TODO auto-generated catch Blocke.printstacktrace ();} finally {database.endtransaction (); if ( Database! = null) Database.close ();} return flag;} /** * BULK INSERT * * @param sqls * @return */public boolean insertbatch (List Line here encapsulates an SQL-based Update method, including add or remove, because the Sqlitedatabase method directly provides a Execsql method, s

Android -- Listview does not use the yydatasetchanged method to update data. androidlistview updates data. I. IntroductionThe following describes how to update data in listview:1. listview. setadapter () is called each time data is updated ();2. Call adapter. notifydatasetch

Android System integrates a lightweight database:SQLite, so Android support for the database is very good, each application can easily use it. As an embedded database engine, SQLite is dedicated to the right amount of data access on devices with limited resources, and now mainstream mobile devices like Android, iphone

static final String KEY = "My_backup"; @Override public void OnCreate () {//constructs a file read-write object, declares the file that needs to be backed up filebackuphelper helper = new Filebackuphelper (th IS, "Backup_file"); Addhelper (Key,helper); Super.oncreate (); } @Override public void Onbackup (Parcelfiledescriptor oldstate, backupdataoutput data, Parcelfiledesc Riptor newstate) throws IOException {//Call the parent clas

1. sqlitehelper. Java: Create a database, Form Package com. Android; Import Android. content. context;Import Android. database. SQLite. sqlitedatabase;Import Android. database. SQLite. sqlitedatabase. cursorfactory;Import Android. database. SQLite. sqliteopenhelper; Public

been completed. Create an Android project.2. Create an Android client: Android project structure: Step 1: Create the business logic layer of the Android Project Core code: SendDateToServer. java: Package com. jph. sdg. service; import java.net. httpURLConnection; import java.net. URL; import java.net. URLEncoder; im

). show ();The running result is as follows. We can see that we pass data from one Activity to another. Of course, other basic data types, such as Double int, can also be passed as long as they are changed when receiving the data, such as receiving the double type Double x=bundle.getDouble(key); Code Attached MainActivity Package com. example. activity; import

();Bundle. putDouble ("height", height );Bundle. putString ("sex", sex ); // Assign the Bundle object assign to IntentIntent. putExtras (bundle ); // Call Activity2StartActivity (intent );} });}} Activity2.java Package com. bund; Import java. text. DecimalFormat;Import java. text. NumberFormat;Import android. app. Activity;Import android. OS. Bundle;Import android