एसडी कार्ड में .xml फ़ाइल या .csv फ़ाइल के रूप में संपर्कों या एसएमएस को बैकअप कैसे लें और इसे बाद में पुनर्स्थापित करें

Question

मैं अपने ऐप में बैकअप एसएमएस और संपर्कों को एसडी कार्ड में .xml या .csv प्रारूप के रूप में विकसित करने की कोशिश कर रहा हूं और इसे बाद में बहाल करें।

तो कृपया कोई मुझे कुछ सुझाव या कुछ नमूना कोड या इससे संबंधित किसी भी संसाधन लिंक दें। अग्रिम

Answer 1

public ArrayList<String> smsBuffer = new ArrayList<String>(); 
    String smsFile = "SMS"+".csv"; 
     private void backupSMS(){ 
    smsBuffer.clear(); 
    Uri mSmsinboxQueryUri = Uri.parse("content://sms"); 
    Cursor cursor1 = getContentResolver().query(
      mSmsinboxQueryUri, 
      new String[] { "_id", "thread_id", "address", "person", "date", 
        "body", "type" }, null, null, null); 
    //startManagingCursor(cursor1); 
    String[] columns = new String[] { "_id", "thread_id", "address", "person", "date", "body", 
      "type" }; 
    if (cursor1.getCount() > 0) { 
     String count = Integer.toString(cursor1.getCount()); 
     Log.d("Count",count); 
     while (cursor1.moveToNext()) { 

      String messageId = cursor1.getString(cursor1 
        .getColumnIndex(columns[0])); 

      String threadId = cursor1.getString(cursor1 
        .getColumnIndex(columns[1])); 

      String address = cursor1.getString(cursor1 
        .getColumnIndex(columns[2])); 
      String name = cursor1.getString(cursor1 
        .getColumnIndex(columns[3])); 
      String date = cursor1.getString(cursor1 
        .getColumnIndex(columns[4])); 
      String msg = cursor1.getString(cursor1 
        .getColumnIndex(columns[5])); 
      String type = cursor1.getString(cursor1 
        .getColumnIndex(columns[6])); 



      smsBuffer.add(messageId + ","+ threadId+ ","+ address + "," + name + "," + date + " ," + msg + " ," 
        + type); 

     }   
     generateCSVFileForSMS(smsBuffer); 
    }    
} 


private void generateCSVFileForSMS(ArrayList<String> list) 
{ 

    try 
    { 
     String storage_path = Environment.getExternalStorageDirectory().toString() + File.separator + smsFile; 
     FileWriter write = new FileWriter(storage_path); 

     write.append("messageId, threadId, Address, Name, Date, msg, type"); 
     write.append('\n'); 

     for (String s : list) 
     { 
      write.append(s); 
      write.append('\n'); 
     } 
     write.flush(); 
     write.close(); 
    } 

    catch (NullPointerException e) 
    { 
     System.out.println("Nullpointer Exception "+e); 
     // e.printStackTrace(); 
    } 
    catch (IOException e) 
    { 
     e.printStackTrace(); 
    } 
    catch (Exception e) 
    { 
     e.printStackTrace(); 
    } 

} 

Answer 2

package com.vcard; 

import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.util.ArrayList; 

import android.app.Activity; 
import android.content.res.AssetFileDescriptor; 
import android.database.Cursor; 
import android.net.Uri; 
import android.os.Bundle; 
import android.os.Environment; 
import android.provider.ContactsContract; 
import android.util.Log; 
import android.view.View; 

public class VCardActivity extends Activity 
{ 
Cursor cursor; 
ArrayList<String> vCard ; 
String vfile; 

/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    vfile = "Contacts" + "_" + System.currentTimeMillis()+".vcf"; 
    /**This Function For Vcard And here i take one Array List in Which i store every Vcard String of Every Conatact 
    * Here i take one Cursor and this cursor is not null and its count>0 than i repeat one loop up to cursor.getcount() means Up to number of phone contacts. 
    * And in Every Loop i can make vcard string and store in Array list which i declared as a Global. 
    * And in Every Loop i move cursor next and print log in logcat. 
    * */ 
    getVcardString(); 

} 
private void getVcardString() { 
    // TODO Auto-generated method stub 
    vCard = new ArrayList<String>(); 
    cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null); 
    if(cursor!=null&&cursor.getCount()>0) 
    { 
     cursor.moveToFirst(); 
     for(int i =0;i<cursor.getCount();i++) 
     { 

      get(cursor); 
      Log.d("TAG", "Contact "+(i+1)+"VcF String is"+vCard.get(i)); 
      cursor.moveToNext(); 
     } 

    } 
    else 
    { 
     Log.d("TAG", "No Contacts in Your Phone"); 
    } 

} 

public void get(Cursor cursor) 
{ 


    //cursor.moveToFirst(); 
    String lookupKey = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.LOOKUP_KEY)); 
    Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_VCARD_URI, lookupKey); 
    AssetFileDescriptor fd; 
    try { 
     fd = this.getContentResolver().openAssetFileDescriptor(uri, "r"); 

     // Your Complex Code and you used function without loop so how can you get all Contacts Vcard.?? 


     /* FileInputStream fis = fd.createInputStream(); 
     byte[] buf = new byte[(int) fd.getDeclaredLength()]; 
     fis.read(buf); 
     String VCard = new String(buf); 
     String path = Environment.getExternalStorageDirectory().toString() + File.separator + vfile; 
     FileOutputStream out = new FileOutputStream(path); 
     out.write(VCard.toString().getBytes()); 
     Log.d("Vcard", VCard);*/ 

     FileInputStream fis = fd.createInputStream(); 
     byte[] buf = new byte[(int) fd.getDeclaredLength()]; 
     fis.read(buf); 
     String vcardstring= new String(buf); 
     vCard.add(vcardstring); 

     String storage_path = Environment.getExternalStorageDirectory().toString() + File.separator + vfile; 
     FileOutputStream mFileOutputStream = new FileOutputStream(storage_path, false); 
     mFileOutputStream.write(vcardstring.toString().getBytes()); 

    } catch (Exception e1) 
    { 
     // TODO Auto-generated catch block 
     e1.printStackTrace(); 
    } 
} 
} 

इस में

धन्यवाद आप वीसीएफ फ़ाइल के रूप में संपर्क लेने के लिए मदद की जा सकती है। एसएमएस बैकअप लेने के लिए एसएमएस विधि बैकअप के लिए इस विधि का उपयोग करें।