Android serialization serialization

Android serialization

Objective:

to facilitate the testing of sensor data processing algorithms, the acquisition data of the Android program is saved as a file, and the PC program tests the algorithm on the PC by deserializing the object .

JavaSerialization:

will beJavaobject is serialized as a binary file.JavaSerialization technology isJavaone of the more important technical points in a series of technologies, in most cases, developers only need to understand that the class being serialized needs to be implementedSerializableinterface, usingObjectInputStreamand theObjectOutputStreamto read and write objects.

Precautions :

The class of the object to serialize is to meet the following conditions:

1. class to implement Serializable interface

2. Serialize and deserialize procedures to ensure package consistency

3.serialVersionUID to be consistent

Routines :

Package Com.example.coolwaterld.serializedemo;import Java.io.serializable;class Person implements Serializable// Added implements serializable{    String name= "";    Private String number= "";    Private String address= "";    Private static final long serialversionuid = 1L;       Public String getName ()    {        return name;    }    Public String GetNumber ()    {        return number;    }    Public String getaddress ()    {        return address;    }}

Package Com.example.coolwaterld.serializedemo;import Android.app.activity;import Android.os.bundle;import Android.util.log;import Java.io.file;import Java.io.fileinputstream;import Java.io.fileoutputstream;import Java.io.objectinputstream;import Java.io.objectoutputstream;public class Mainactivity extends Activity {@Override p        ublic void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);        person person = new person ();        Person.setname ("Coolwaterld");        Person.setaddress ("BJ");        Person.setnumber ("123");        Save the object Saveobject (person);         Get the Object person person1 = (person) loadserializedobject (new File ("/sdcard/person.bin"));    LOG.I ("Name", Person1.getname ()); } public void Saveobject (person p) {try {objectoutputstream oos = new ObjectOutputStream (new     FileOutputStream (New File ("/sdcard/kvmatrix.bin"));        Oos.writeobject (P);             Oos.flush ();        Oos.close ();            } catch (Exception ex) {log.v ("Serialize write:", Ex.getmessage ());        Ex.printstacktrace (); }} public Object Loadserializedobject (File f) {try {objectinputstream ois = new Objec            Tinputstream (new FileInputStream (f));            Object o = Ois.readobject ();        return o;            } catch (Exception ex) {log.v ("Serialize Read:", Ex.getmessage ());        Ex.printstacktrace ();    } return null; }}

<uses-permission android:name= "Android.permission.WRITE_EXTERNAL_STORAGE"/> in Androidmanifest.xml

Reference:

Java–serialization

Http://www.tutorialspoint.com/java/java_serialization.htm

Advanced understanding of Java serialization

http://www.ibm.com/developerworks/cn/java/j-lo-serial/index.html?ca=drs-#icomments

( serialization ID problem , static variable serialization , parent class serialization with Transient keyword , encryption of sensitive fields, Serialization of storage rules )

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Android serialization serialization