Android手机通讯录备份还原代码

最近想写段Android程序玩玩。开发环境 Eclipse ,Android 2.2

开发环境搭建

1.先安装jdk

2.下载安装eclipse

3.下载安装android sdk

4.安装eclipse插件 adt

5.配置 Window > Preferences 中的android sdk路径

6.创建 AVD

实现方法很简单
1.把通讯录中的联系人，电话号码保存到txt文件中完成备份。
2.读取txt文件，导入到通讯录完成还原。

具体代码
1.添加通讯录读写权限，存储卡写权限

<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.写文件代码

         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.取通讯录联系人

     str="";
       Cursor cur = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, 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.读文件代码

         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.写通讯录

     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手机通讯录备份还原代码

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