Question

在Android客户端上，我需要获得realmURL。所以我接下来的步骤：

登录Realm Object Server（ROS）
使用收到的令牌创建回复
处理完成后，offerResponse的realmUrl属性将包含共享领域的URL

这里摘录：

public class MainApp extends MultiDexApplication {

 private void loginAndConfig() {
        String authUrl = "http://" + BuildConfig.OBJECT_SERVER_IP + ":" + BuildConfig.OBJECT_SERVER_PORT + "/auth";
        SyncUser.Callback callback = new SyncUser.Callback() {
            @Override
            public void onSuccess(SyncUser user) {
                setPermissions(user);
            }

            @Override
            public void onError(ObjectServerError error) {
                String errorMsg;
                switch (error.getErrorCode()) {
                    case UNKNOWN_ACCOUNT:
                        errorMsg = "Account does not exists.";
                        break;
                    case INVALID_CREDENTIALS:
                        errorMsg = "User name and password does not match";
                        break;
                    default:
                        errorMsg = error.toString();
                }
                Log.w(TAG, "loginAndConfig: onError: result errorMsg = " + errorMsg);
            }
        };

        SyncCredentials syncCredentials = SyncCredentials.usernamePassword(
                BuildConfig.USER_NAME, BuildConfig.PASSWORD, false);
        SyncUser.loginAsync(syncCredentials, authUrl, callback);
    }

    private void setPermissions(final SyncUser syncUser) {
        Realm managementRealm = syncUser.getManagementRealm();

        // Create response with received token
        String offerToken = BuildConfig.REALM_OFFER_TOKEN;
        final PermissionOfferResponse permissionOfferResponse = new PermissionOfferResponse(offerToken);

        // Add to management Realm to sync with ROS
        managementRealm.executeTransaction(new Realm.Transaction() {
            @Override
            public void execute(Realm realm) {
            // call every time on start 
                realm.insert(permissionOfferResponse);
            }
        });

        // After processing, offerResponse's realmUrl property will contain the URL of the shared Realm
        // Wait for server to handle the offer
        RealmResults<PermissionOfferResponse> realmResultPermissionOfferResponse = managementRealm.where(PermissionOfferResponse.class)
                .equalTo("statusCode", 0)
                .findAll();
        realmResultPermissionOfferResponse.addChangeListener(new RealmChangeListener<RealmResults<PermissionOfferResponse>>() {
            @Override
            public void onChange(RealmResults<PermissionOfferResponse> offers) {
                PermissionOfferResponse offer = offers.first();
                String realmURL = offer.getRealmUrl();
                // success get relmURL
            }
        });
}
}

正如您所看到的，此代码从每次应用程序启动开始。每次调用方法 realm.insert（permissionOfferResponse）时都会产生结果。

问题：我是否需要在启动应用程序时每次调用方法 realm.insert（permissionOfferResponse）？

Android，Realm：每次调用realm.insert（permissionOfferResponse）都需要吗？

0 个答案: