Huawei H14-231_V1.0 Practice Exam Dumps 2025

When testing the Bluetooth Low Energy feature of HarmonyOS, a developer needs to make the central device perform Bluetooth scanning. Which of the following descriptions of the developer's actions are correct?

Options:

Get scan filter, if the filter isempty, it is not used to scan without filter

calls startScan() to start scanning the Bluetooth device

Before performing Bluetooth scanning, it is necessary to inherit the advertiseCallback class to implement startResultEvent

Callback, which is used to receive scan results

Call the BleCentralManager(BleCentralManagerCal1lback callback)API to obtain the device management object

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Question 2

Now a Text component is used as the title of a page, and the Text needs to be set to be invisible, but it still occupies the current layout space, which of the following is correct?

Options:

ohos:visibility="invisible"

text.setVisibility(Component.VISIBLE);

ohos:visibility="visible"

ohos:visibility="hide"

Question 3

Which of the following breakpoint management functions does the JS code type support?

Options:

normal line breakpoint

Exception breakpoint

symbol breakpoint

method breakpoint

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