A developer uses continueAbility() to migrate the distributed news application of the mobile phone to the large screen, and the large screen can also migrate the news browsing page back to the mobile phone.
The Service Ability created by a developer does not have a user interface. Can be launched by other apps. When the user switches to another application, the Service will be killed in the background.
Sservice Abilit calls the onCommand() method after the creation is completed, and the method can be called once when the client starts the service for the first time, and there is no need to call it again in the future
A HarmonyOS developer uses syncDispatch to synchronously dispatch tasks when developing applications. In this scenario, syncDispatch dispatches the task and waits for the task to complete on the current thread, so the current thread is not blocked until it returns.
In JavaScript UI development, for wearable projects and TV projects, the name of the homepage can be not index, and the first page in the pages configuration list is the homepage; for the litewearable project, the name of the homepage must be index.
The global search portal provided on HarmonyOS has a desktop drop-down search box or a negative screen search box.
HarmonyOS's relational database and object relational mapping database are both based on SQLite.
When a developer develops an application based on HarmonyOS, the data used by a developer can be decomposed into multiple objects. The developer needs to add, delete, modify, and check the teaching data, but does not want to write overly complex SQL statements. In this scenario, the developer can use an object-relational mapping database to process the data.
When a developer starts a music player on a remote device, he or she may not fill inthe Deviceld of the remote device.
The user application package of HarmonyOS may not contain a HAP package of the feature type.
Sampling refers to the process of sampling a digital signal in a continuous time domain at certain time intervals to obtain a discrete signal in the discrete time domain.
HarmonyOS supports entity recognition, which can highlight relevant entity information and set up quick operation entrances. For example, the phone number in this message will be highlighted, and the user can dial it directly.
When a developer develops an application based on HarmonyOS, the data used by a developer can be decomposed into multiple objects. The developer needs to add, delete, modify, and check the teaching data, but does not want to write overly complex SQL statements. In this scenario, the developer can use an object-relational mapping database to process the data.
A manufacturer used HarmonyoS to produce a dash cam (memory is 64MB), which is small in size and light in weight, and is a lightweight system device.
The callback mechanism provided by the Ability class can allow the Page instance to switch with the user's operation background
TESTED 03 Apr 2025
