Example of text message backup for Android Development

Example of text message backup for Android Development

It mainly uses content provider ContentProvider

 

#1. Add the write sdcard permission to the activity_main.xml layout file and the read SMS permission.

 

#2. MainActivity content:

 

 

Package com. wzw. backupsms; import java. io. fileOutputStream; import java. io. IOException; import java. util. arrayList; import java. util. list; import org. xmlpull. v1.XmlSerializer; import com. wzw. backupsms. entity. smsInfo; import android.net. uri; import android. OS. bundle; import android. app. activity; import android. content. contentResolver; import android. database. cursor; import android. util. log; import android. util. X Ml; import android. view. menu; import android. view. view; import android. widget. toast; public class MainActivity extends Activity {@ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. activity_main);} public void backupsms (View v) {Uri uri = Uri. parse (content: // sms/); ContentResolver resolver = getContentResolver (); Cursor cursor = resolver. qu Ery (uri, new String [] {_ id, address, date, type, body}, null); if (cursor! = Null & cursor. getCount ()> 0) {List
 
  
SmsList = new ArrayList
  
   
(); SmsInfo smsInfo; while (cursor. moveToNext () {// control the cursor, move down one smsInfo = new SmsInfo (); smsInfo. setId (cursor. getInt (0); // sets IDsmsInfo. setAddress (cursor. getString (1); // set the SMS number smsInfo. setDate (cursor. getLong (2); // set the SMS time to smsInfo. setType (cursor. getInt (3); // set the SMS type smsInfo. setBody (cursor. getString (4); // sets smsList for the text message. add (smsInfo);} cursor. close (); WriteToLocal (smsList) ;}/ *** serialize to local */private void WriteToLocal (List
   
    
SmsList) {XmlSerializer serializer = Xml. newSerializer (); try {FileOutputStream fos = new FileOutputStream (/mnt/sdcard/sms. xml); serializer. setOutput (fos, UTF-8); serializer. startDocument (UTF-8, true); serializer. startTag (null, smss); for (SmsInfo smsInfo: smsList) {serializer. startTag (null, sms); serializer. attribute (null, id, String. valueOf (smsInfo. getId (); // write address serializer. startTag (null, address); serialize R. text (smsInfo. getAddress (); serializer. endTag (null, address); // write type serializer. startTag (null, type); serializer. text (String. valueOf (smsInfo. getType (); serializer. endTag (null, type); // write time serializer. startTag (null, date); serializer. text (String. valueOf (smsInfo. getDate (); serializer. endTag (null, date); // write content serializer. startTag (null, body); serializer. text (smsInfo. getBody (); serializer. endTag (null, body ); Serializer. endTag (null, sms);} serializer. endTag (null, smss); serializer. endDocument (); Toast. makeText (this, congratulations, the backup is successful !, 0). show ();} catch (Exception e) {Toast. makeText (this, I am going, backup failed !, 0). show (); e. printStackTrace ();}}}
   
  
 

#3. Write results

 

 

 
  
   10086
   
    1
   
   
    1406446124317
   just for test!
  
  
   110
   
    1
   
   
    1406446024971
   world
  
  
   5556
   
    1
   
   
    1406446006018
   hello