Huawei H14-231_V1.0 HCIP-HarmonyOS Application Developer V1.0 Exam Practice Test

The callback mechanism provided by the Ability class can enable the Page instance to switch in the background following the user's operation.

When MainAbility and MainAbiitySlice are bound together, the lifecycles of the two are synchronized, including the callback method for transitioning between states.

Intent is a carrier for transmitting information between objects.

In HarmonyOS, both relational databases and object-relational mapping databases can use SQL statements to manipulate databases.

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 the recognition results. This is by taking advantage of the super-resolution of text and images in AI.

Suppose that multiple AbilitySlice are associated in MainAbility, and multiple AbilitySlice are switched in the same page, the lifecycle of MainAbility and all AbilitySlice is synchronized.

The way to find the object of the control declared in the Layout file by ID in HarmonyOS is findComponentByld().