For example, you can start a new activity in response to a user action or start a service to download a file in the background. You generally use an explicit intent to start a new component in your own app, because you know which exact activity or service you want to start. When you explicitly define which Android component should be opened on some user action, then you use explicit intents. In Android, there are two types of Intents: You can deliver a broadcast to other apps by passing an Intent to sendBroadcast() or sendOrderedBroadcast(). The system delivers various broadcasts for system events, such as when the system boots up or the device starts charging.
The Intent describes which service to start and carries any necessary data.Ī broadcast is a message that any app can receive. You can start a service to perform a one-time operation(such as downloading a file) by passing an Intent to startService(). The Intent describes the activity to start and carries any necessary data along.Ī Service is a component that performs operations in the background and does not have a user interface. You can start a new instance of an Activity by passing an Intent to startActivity(). To start an ActivityĪn Activity represents a single screen in an app. There are three fundamental uses of intents: 1. If multiple apps are capable of responding to the message then Android provides the user with a list of those apps from which a choice can be made.
What Are Infinitives? Examples, Types, and Uses of Infinitives (PDF)
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