Android phone Address Book backup restore code

The implementation method is simple
1. Save the contacts and phone numbers in the Address Book to the TXT file to complete the backup.
2. Read the TXT file and import to the Address Book to complete the restore.

　　Specific code
1. Add read and write access to the address book, memory card Write permissions

<uses-permission android:name= "Android.permission.READ_CONTACTS" ></uses-permission>
<uses-permission android:name= "Android.permission.WRITE_EXTERNAL_STORAGE" ></uses-permission>
<uses-permission android:name= "Android.permission.WRITE_CONTACTS" ></uses-permission>

2. Write the file code

File Savefile=new file ("/sdcard/test.txt");
FileOutputStream OutStream;
try {
OutStream = new FileOutputStream (saveFile);
Outstream.write (Str.getbytes ());
Outstream.close ();
} catch (Exception e) {

　　
Settitle (E.tostring ());
}

3. Access Contacts

Str= "";
Cursor cur = getcontentresolver (). query (ContactsContract.Contacts.CONTENT_URI, NULL, NULL, NULL, or NULL);
if (Cur.movetofirst ()) {
int idcolumn = Cur.getcolumnindex (contactscontract.contacts._id);
int displaynamecolumn = Cur.getcolumnindex (ContactsContract.Contacts.DISPLAY_NAME);
do {
String contactId = cur.getstring (Idcolumn);
String disPlayName = cur.getstring (Displaynamecolumn);
Str+=displayname;
int phonecount = Cur.getint (Cur.getcolumnindex (ContactsContract.Contacts.HAS_PHONE_NUMBER));
if (phonecount>0) {
Cursor phones = getcontentresolver (). Query (Contactscontract.commondatakinds.phone.content_uri,null, Contactscontract.commondatakinds.phone.contact_id+ "=" + contactId, NULL, NULL);
int i=0;
String PhoneNumber;
if (Phones.movetofirst ()) {
do{
i++;
Phonenumber= phones.getstring (Phones.getcolumnindex (ContactsContract.CommonDataKinds.Phone.NUMBER));
if (i==1)
Str=str+ "," +phonenumber;
System.out.println (PhoneNumber);
}while (Phones.movetonext ());
}
}
str+= "\ r \ n";
} while (Cur.movetonext ());
}
}

4. Read the file code

try {
File File = new file ("/sdcard/test.txt");
FileInputStream instream = new FileInputStream (file);
Bytearrayoutputstream OutStream = new Bytearrayoutputstream ();
byte[] buffer = new BYTE[1024*5];
int length =-1;
while (length = instream.read (buffer))! =-1) {
Outstream.write (buffer, 0, length);
}
Outstream.close ();
Instream.close ();
String txt= outstream.tostring ();

　　
} catch (IOException e) {
Settitle (E.tostring ());
}

　　
5. Write your Contacts

Contentvalues values = new Contentvalues ();
Uri Rawcontacturi = Getcontentresolver (). Insert (Rawcontacts.content_uri, values);
Long Rawcontactid = Contenturis.parseid (Rawcontacturi);
Values.clear ();
Values.put (data.raw_contact_id, Rawcontactid);
Values.put (Data.mimetype, Structuredname.content_item_type);
Values.put (Structuredname.given_name, NAME);
Getcontentresolver (). Insert (Data.content_uri, values);
Values.clear ();
Values.put (data.raw_contact_id, Rawcontactid);
Values.put (Data.mimetype, Phone.content_item_type);
Values.put (Phone.number, num);
Values.put (Phone.type, phone.type_home);
Getcontentresolver (). Insert (Data.content_uri, values);

Android phone Address Book backup restore code

　　Free in

　　Both the user name and password are

　　specific download directory in /pub/android source collection/2011/November/android phone Address Book backup restore code/

Android phone Address Book backup restore code