ContactMigration.java

private void doImport() {
        Uri fullContacts = Uri.parse("content://com.android.contacts/raw_contacts");
        Uri itemContact = Uri.parse("content://com.android.contacts/data");
        int importCnt = 0;

        try {

            InputStream inputStream = getAssets().open("ct2.txt");
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            byte buffer[] = new byte[1024];
            int readCnt;
            while ((readCnt = inputStream.read(buffer)) != -1) {
                bos.write(buffer, 0, readCnt);
            }
            bos.flush();

            String rawStr = bos.toString();
            bos.close();

            int beg = 0;
            int end;
            int nameBeg = 0;
            while ((nameBeg = rawStr.indexOf("name=", beg)) >= 0) {
                beg = nameBeg + "name=".length();
                end = rawStr.indexOf(",", beg);

                String name = rawStr.substring(beg, end);

                int phoneBeg = rawStr.indexOf("phone=", end) + "phone=".length();

                int phoneEnd = rawStr.indexOf("\n", phoneBeg);
                if (phoneEnd < 0) { // buggy for retrieving the last record due to "contractID" field!!!
                    break;
                }
                String phone = rawStr.substring(phoneBeg, phoneEnd);

                ++importCnt;

                Uri uri = fullContacts; //Uri.parse("content://com.android.contacts/raw_contacts");
                ContentResolver resolver = getApplication().getContentResolver();

                // for each contact :
                ArrayList<ContentProviderOperation> operations = new ArrayList<ContentProviderOperation>();

                //ContentValues contentValues = new ContentValues();
                //long id = ContentUris.parseId(resolver.insert(uri, contentValues));

                ContentProviderOperation op1 = ContentProviderOperation.newInsert(uri)
                        .withValue("account_name", null)
                        .build();
                operations.add(op1);

                uri = itemContact; //Uri.parse("content://com.android.contacts/data");
                ContentProviderOperation op2 = ContentProviderOperation.newInsert(uri)
                        .withValueBackReference("raw_contact_id", 0)
                        .withValue("mimetype", "vnd.android.cursor.item/name")
                        .withValue("data2", name)
                        .build();
                operations.add(op2);

                ContentProviderOperation op3 = ContentProviderOperation.newInsert(uri)
                        .withValueBackReference("raw_contact_id", 0)
                        .withValue("mimetype", "vnd.android.cursor.item/phone_v2")
                        .withValue("data1", phone)
                        .build();
                operations.add(op3);

                try {
                    resolver.applyBatch("com.android.contacts", operations);
                    //Toast.makeText(this, ":) 成功添加联系人!", Toast.LENGTH_LONG).show();
                } catch (RemoteException e) {
                    e.printStackTrace();
                    //Toast.makeText(this, ":( 添加一位联系人失败!", Toast.LENGTH_LONG).show();
                } catch (OperationApplicationException e) {
                    e.printStackTrace();
                    //Toast.makeText(this, ":( 添加一位联系人失败!", Toast.LENGTH_LONG).show();
                }

                beg = phoneEnd;
                System.out.println("Name:" + name + " | " + "phone:" + phone);
            }

            Toast.makeText(this, String.format("成功导入 %d 位联系人!", importCnt), Toast.LENGTH_LONG).show();

        } catch (IOException e) {
            e.printStackTrace();
        }


    }

    private void doExport() {
        //this.getApplicationContext().getExternalFilesDir()
        //Environment.getExternalStorageDirectory();
        File file = new File(/*getExternalFilesDir(null)*/ Environment.getExternalStorageDirectory(), "contact.txt");
        System.out.println(TAG + ": dest file | " + file.getAbsolutePath());
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(file);

            Uri uri = Uri.parse("content://com.android.contacts/contacts");
            ContentResolver resolver = this.getContentResolver();
            Cursor cursor = resolver.query(uri, new String[]{"_id"}, null, null, null);
            while (cursor.moveToNext()) {
                int contractID = cursor.getInt(0);
                StringBuilder sb = new StringBuilder("contractID=");
                sb.append(contractID);
                uri = Uri.parse("content://com.android.contacts/contacts/" + contractID + "/data");
                Cursor cursor1 = resolver.query(uri, new String[]{"mimetype", "data1", "data2"}, null, null, null);
                while (cursor1.moveToNext()) {
                    String data1 = cursor1.getString(cursor1.getColumnIndex("data1"));
                    String mimeType = cursor1.getString(cursor1.getColumnIndex("mimetype"));
                    if ("vnd.android.cursor.item/name".equals(mimeType)) { //是姓名
                        sb.append(",name=" + data1);
                    } else if ("vnd.android.cursor.item/email_v2".equals(mimeType)) { //邮箱
                        sb.append(",email=" + data1);
                    } else if ("vnd.android.cursor.item/phone_v2".equals(mimeType)) { //手机
                        sb.append(",phone=" + data1).append("\n");
                    }
                }
                cursor1.close();

                // copy
                byte[] bts = sb.toString().getBytes();
                fos.write(bts);

                Log.i(TAG, sb.toString());
            }
            cursor.close();

            fos.flush();
            Toast.makeText(this, ":) 导出联系人成功", Toast.LENGTH_LONG).show();
        } catch (IOException e) {
            e.printStackTrace();
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e1) {
                    /** ignore **/
                }
            }

            Toast.makeText(this, ":( 未能成功导出联系人", Toast.LENGTH_SHORT).show();
        }

    }