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If a developer wants to develop a file background download function, there needs to be...

Huawei H14-231_V1.0 Full Course Access
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If a developer wants to develop a file background download function, there needs to be a Page Ability to provide UI pages, and a Service Ability to provide the background file download function. Which of the following can call Service Ability in Page Ability?

A.

onConneCtenxt()

B.

connectPageAbility(intent.connection)

C.

connectAbility(intent.connection);

D.

connectServiceAbility(intent,connection);

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