Android - To check whether the contact exists in Contact list or not

To check whether the contact exists in Contact list or not

If you are working with contact related application like Contact Backup & Restore application, and you want to check to check whether the contact exists in contact list or not, then you must go for this.

Step-1 :  In your activity, use contactExists() function for checking particular contact exist or not.

public class Conatclist extends Activity {

  @Override

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.conatct);

    //Check if contact is already exists or not in Contact list

       if(contactExists(this,"4561237890"))

    {

    Toast.makeText(GanzfeldActivity.this,"exists",Toast.LENGTH_SHORT).show();

          

    }

    else

    {

    Toast.makeText(GanzfeldActivity.this," not exists",Toast.LENGTH_SHORT).show();

    }

}

public  boolean contactExists(Activity _activity,String number){

  Uri lookupUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI,Uri.encode(number));

String[] mPhoneNumberProjection = { PhoneLookup._ID, PhoneLookup.NUMBER, PhoneLookup.DISPLAY_NAME };

Cursor cur = _activity.getContentResolver().query(lookupUri,mPhoneNumberProjection, null, null, null);

 try {

    if (cur.moveToFirst()) {

      // if contact are in contact list it will return true

      return true;

   }} finally {

       if (cur != null)

          cur.close();

  }

     //if contact are not match that means contact are not added

    return false;

}

}

Step-2: For accessing contact detail , you need to give permission in android manifest file.

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