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[ionic] ionic3 provider

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Posted on 6/21/2018 2:13:56 PM | | |
provider, also called service. The former is the name of ionic, and the latter is the name of ng.

When a duplicate requires a method in a class, it can be encapsulated as a service class for reuse, such as http.

Import the decorator first, and then decorate it with the decorator so that the class can be injected into other classes as a provider to use:


Of course, we don't need to create the above manually, enter the command:
ionic g provider http
It will help you create it in the providers folder and import it in the app.module.

Use:
Import in the page you want to use:

Then, inject into the constructor to create an instance:

This way, we can use the method in HttpProvider:

this.httpProvider.myAlert()





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Posted on 6/25/2018 10:00:02 AM |
In what scenarios is this applied?
 Landlord| Posted on 6/25/2018 2:52:30 PM |
Pearl Posted on 2018-6-25 10:00
In what scenarios is this applied?

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