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Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 42

Question list

List of questions

Question 411

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The user clicks on the song from the music list page to jump to the playback interface of the song, and clicks back to return to the music list page. Which of the following do developers need to do

Question 412

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When a developer develops a background music playback software, he needs to use Service Ability, what are the following correct descriptions of the use process of Service Ability?

Question 413

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If a developer needs to use the JavaScript UI framework to develop an application, which of the following components can the developer choose?

Question 414

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If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?

Question 415

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If a developer uses the Text component to develop a UI interface, if the outside of the Text component needs to be left blank, which of the following codes can the developer use?

Question 416

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What development steps does a developer use to develop an application with a UI?

Question 417

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Which of the following languages does HarmonyOS support for creating application projects?

Question 418

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In the following scenarios, which ones use the voice broadcast function?

Question 419

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Which of the following NFC functions can developers use when developing apps based on HarmonyOS?

Question 420

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Which of the following functions can be achieved through the sidebar button of the remote simulator?

Related questions

When a developer is developing an online education application, in order to improve the user experience, if the user Answer:s the question correctly, a dialog box of 'Congratulations on the correct Answer:' will pop up at the top of the window.

Which of the following sorting types does the trusted list of devices found by HarmonyOS Device Manager contain?

In the HarmonyOS system architecture, the distributed data management module belongs to the framework layer.

A developer is developing a flight booking application, and uses the sliding selector Picker to select the location of the ticket and writes the following code.

fter a developer sets :ohos:layout_alignment='horizontal_center' in the Text component, he writes: text.setMarginRight (600) in the code, where is the Text displayed in the parent layout?

Which modules in the following figure can be installed and operated independently?

A developer needs to cancel a task, but part of the code segment he wrote was deleted by mistake. The remaining codes are as follows, with the missing codes indicated by the dash: TaskDispatcher dispatcher = getUlTaskDispatcher(); Revocable revocable = ________________________(new Runnable(){ @Overide Public void run(){ HiLog.info(L . ABEL_ _LOG,'delay dispatch'); } },10); Boolean revoked = revocable.revoke(); HiL og.info(L _ABEL_ LOG),'%{public}b' ,revoked); Which of the following might be missing pieces in the above code?

The default size of shared memory in Harmony OS is ?

An engineer uses the WLAN P2P function, and the engineer can establish a P2P group.

Which of the following classes is the base class for JavaScript FA (Feature Ability) to run on HarmonyOS?

Question 411

The user clicks on the song from the music list page to jump to the playback interface of the song, and clicks back to return to the music list page. Which of the following do developers need to do to implement this feature?

calls router.back() to return to the music list

Page Ability to create a music list page

Create a Page Ability area for playing the page

calls router.push() to route to the playback interface

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Question 412

When a developer develops a background music playback software, he needs to use Service Ability, what are the following correct descriptions of the use process of Service Ability?

When you use the connectAbility() method to connect to a Service, you need to pass in the Intent of the target Service

onConnect() needs to return an IRemoteObject object back

Use setElement() of the Intent to set the target service information

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Question 413

If a developer needs to use the JavaScript UI framework to develop an application, which of the following components can the developer choose?

Container component

Media Component

Foundation Components

Canvas component

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Question 414

If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?

If the Service is not already running, the system calls the onCommand() method to start the Service

If the Service is running, the system will call back the onStart() method of the Service to start the Service

If the Service is running, the system will call back the onCommand() method of the Service to start the Service

If the Service is not already running, onStart() is called to initialize the Service

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Question 415

If a developer uses the Text component to develop a UI interface, if the outside of the Text component needs to be left blank, which of the following codes can the developer use?

ohos:top_padding='15'

ohos:top_margin='15'

ohos:top_padding='30'

ohos:top_margin='30'

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