how to transfer data between android phones

Common abbreviations Ajax:asynchronous JavaScript + XML API: Application Programming Interface CSV: comma-separated values CSS: Cascading Style Sheets DOM: Document Object Model HTML: Hypertext Markup Language HTTP: Hypertext Transfer Protocol IDL: Interface Description Language Json:javascript Object identification Sax:xml Simple API SDK: Software Development Kits UI: User Interface URL: Uniform Resource Locator XML: Extensible Markup L

When data is transmitted between activities, in order to avoid the trouble, some values are often encapsulated into objects, and then the entire object is passed over. The parcelable interface and the serializable interface can be implemented when an object is uploaded. 0. Two interfaces are explained: 1) the serializable interface is supported by javase itself. 2) parcelable is a unique feature of Android,

JSON (JavaScript Object Notation) is a lightweight data exchange format. It uses a language-independent text format and provides an ideal data exchange format for Web application development. In the previous blog titled Android study note 44: JSON data parsing, we used basic JSON APIs to create JSON

Passing Data New Activity Right-click in the project, select New, continue to select activity below, and finally the Blank activity.At this point, Android Studio automatically adds a corresponding layout file for us, adding an ID to the TextView in the layout file for later use. Send data with intent Create a new Button control in the

")); System.out.println (Map.get ("Bt_lat")); System.out.println ("111111111111");For the bundle type of data, you can use the following methods:Submit ActivityHashMap map= (HASHMAP) parent.getitematposition (position); Intent intent=new Intent (); Intent.setclass (btsallinfoactivity.this,btsmapactivity.class); Bundle bundle = new bundle (); Bundle.putserializable ("Bts_map", map); Intent.putextras (bundle); StartActi

Test. java: /*** The problem solved in this example: * core problem: Create a database object through the SQLiteOpenHelper class * perform operations on the database data through the database object * 1. operate the SQLite database using SQL statements * 2. operations on SQLite databases using APIs provided by Google * 3. SQLite operations on Transactions */import com. ghsy. createsqlitedb. db. myOpenHelper; import

 SQLite This is a very popular embedded database. It supports SQL queries, and only uses very little memory. Android is implemented in integration with SQLite, so each Android application is able to use the SQLite database. When you are familiar with SQL developers. Using SQLite is fairly straightforward.Can. Because JDBC is not suitable for memory-constrained devices such as mobile

IntroductionIn Android app development: Fragment's non-disruptive save Setretaineinstance article has described how to get fragment to save data without destroying it with the activity. In the design of mobile application architecture, interface and data are inseparable and can not be confused. In most of the development experience, we are using fragment to inter

Previously introduced three kinds of data storage forms of Android system, http://www.jb51.net/article/99468.htm. Today, there are two other types of content providers and networked storage, respectively. Some people may think that the memory provider and networked storage are more inclined to manipulate the data than the dat