In this article, we’ll consider some practical examples of how to use the Backendless Data Collection library to its fullest extent. You can find code documentation and sources for the library here.
Sometimes (or in some cases, every time) when you invoke a custom API Service, you may need additional information about the context from which the HTTP request was sent/received, such as user or device information. To collect that information, we provide a class called InvocationContext.
In a previous article (How to Save an Object with All the Children in a Single Call to Server), we examined how to simply save an object model. However, Backendless custom services give us much more flexibility when it comes to saving objects.
The ability to send push notifications has been a key Backendless feature for quite a while, but until now, it only had a basic set of actions such as sending to all devices in a specific channel and/or to a specific device type (Android/iOS). With the latest changes, it has grown into a powerful tool…
In Java, entity objects are classes that represent data from your table. From an object-oriented perspective, these objects are built to encapsulate your data in the real-world problem domain.
In this article, we will describe how to use the Backendless API to save multiple related records with one primary (parent) record in a table. All related records (children) will be stored in separate tables as a part of the same routine. Examples of this type of requirement might be personnel records tied to a…
What does “mobile-to-web cross login with a QR code” mean? It is one of the approaches for two-factor authentication. Suppose that a user is already authenticated in your application (in our example, it would be an android app) and the user wants to use their actual session to perform an automatic authentication in another application…
Images displayed in your app may be responsible for a large portion of the bandwidth consumed by the device. This has a direct impact on the app’s performance, battery consumption, and the amount of memory the app allocates. As a result, optimizing images can often bring noticeable performance improvements for your app: the fewer bytes…
In this article, we will learn how to create QR codes with a custom Backendless API Service. For the sample code reviewed later in the article, we will use Java and the ZXing library (https://github.com/zxing). What is a QR code? A QR code is a computer-generated image with some information encoded in a graphical way….