It is used to Start an Activity Start a Service Deliver a Broadcast Intents It is used to Start an Activity Start a Service Deliver a Broadcast

Explicit Intent Implicit Intent Intent Types Explicit Intent Implicit Intent

Explicit Intents Specify the component to start by name (fully quailed name) Typically used to start activities within the same application or to start a service in response to user interaction When you create an explicit intent to start an activity or service, the system immediately starts the app component specied in the Intent object

Implicit Intents Do not specify a specic component but instead declare a general action to perform The system figures out the appropiate app/activity to handle it For example, opening Google Maps to show the location from your app or Share or Phone.

Resolution of Implicit Intents Activity A creates an Intent with an action description and passes it to startActivity(). The Android System searches all apps for an intent filter that matches the intent. When a match is found The system starts the matching activity (Activity B) by invoking its onCreate() method and passing it the Intent

Building an Intent Component Name The name of the component to start. Critical for Explicit Intents Action A string that species the generic action to perform (such as view or pick) Data The URI object that references the data to be acted on and/or the MIME type of that data Category A string containing additional information about the kind of component that should handle the intent Extras Key-value pairs that carry additional information required to accomplish the requested action Flags Flags defined in the Intent class that function as metadata for the intent

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