In the lifecycle of AbilitySlice, the onStart() callback method does not need to be rewritten.
When an Intent is used to initiate a request, if both BundleName and Abilitylame are specified, the application can be started directly according to the full name of the Ability (for example, "com.demcapp.FooAbility").
When using EventHandler to implement inter-thread communication, if EventRunner takes out the Runnable task, it will trigger the callback method of EventHandler and the processing method of EventHandler.
An engineer uses the WLAN P2P function, and the engineer can establish a P2P group.
The input division method of HarmonyOS is different from that of traditional operating systems, and multi-dimensional inputs will be integrated, so that developers can use application frameworks, UI components or interfaces that come with the system to implement applications with multi-dimensional and natural interaction characteristics.
When a developer is developing a HarmonyOS application, if part of the text in the value field of the JSON resource files of different types of elements in the Element directory does not need to be processed by the translator and will not be displayed on the application interface, a special structure can be used to identify the content that does not need to be translated
With the help of the AI-enabled capabilities of HarmonyOS, it can detect and recognize the textof image sources such as document remakes and street view reproductions, and can also be integrated into other applications to provide text detection and recognition functions, and provide translation, search and other related services based on the recognition results. This is by taking advantage of the super-resolution of text and images in AI.
When an application calls a service, the service will check the permissions of the application, and the service cannot be used if there is no corresponding permission.
The way to find the object of the control declared in the Layout file by ID in HarmonyOS is findComponentByld().
Before starting the debugging of the Entry module, the engineer needs to check whether the "visible" attribute exists in the config.jsnabilities array in the config.jsnabilities file under the Entry module, and if it does not exist, it needs to be added manually, otherwise the debugging of the Entry module cannot enter the breakpoint.
With the help of HarmonyOS's Al capability, it can detect and recognize the text of image sources such as document remakes and street view reproductions, and can also be integrated into other applications to provide text detection and recognition functions, and provide translation, search and other related services based on therecognition results. This is by taking advantage of the super-resolution of text and images in AI.
Components can neither be displayed nor interact with when they are not added to a layout, so a user interface contains at least one layout.
When developing HarmonyOS applications, if the client and server need to communicate across processes, you can use idl to define programming interfaces that are recognized by both.
The application package names of the application projects created by JavaSaript and the applications compiled by the Java projects are HAR (HarmonyOS Ability Resources) and HAP (HarmonyOS Ability Package), respectively.
Lightweight data storage is suitable for data storage involving a large number of data relationships and business relationships, and has better read and write performance than relational databases and object-relational mapping databases.
TESTED 27 Apr 2025
