Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 65
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In the process of developing an application based on HarmonyOS, in order to avoid applying for permissions that are unrelated to the user's required functions, a developer uses the UUID generated by the application instead of the device ID to reduce the permission application. The developer's actions exemplify the principle of applying for permissions in the vicinity.
An application can have one or two HAP (HarmonyOS Abi1itPackage) packages of entry type in the same device type.
A developer needs to make a list of the minimum necessary permissions for the application he develops. If the minimum necessary permissions list is output correctly, the lack of one of these permissions will cause the application-related services to be unable to implement or run normally.
A developer wants to use macOS for HarmonyOS application development, but the development tool DevEco Studio does not support macOS installation.
If a developer wants to develop a file background download function, there needs to be a Page Ability to provide U pages, and a Service Ability to provide the background file download function. If you want to perform some operations after connecting to the Service Ability in the Page Ability, you need to implement the onAbilityConnectDone() method in the Page Ability.
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.
An engineer uses a simulator to debug a HarmonyOS application, which can support two types of HAP: signed and unsigned HAP (Harmomy0S Ability Package).
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.
Developers can create user interfaces directly on AbilitySlice or on Ability.
Static animation has a start state, an end state and an intermediate state, if you need to set the transition state and transition effect in the middle, you can use static animation to achieve it.
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