What types of Intents exist in Android?

There are two main types of Intents:

• Explicit Intents: Specify a particular component (Activity, Service, BroadcastReceiver) to start.

  // Example of an explicit intent to start SpecificActivity
  val intent = Intent(this, SpecificActivity::class.java)
  startActivity(intent)
  

• Implicit Intents: Declare a general action to be performed, which components can handle. The Android system then finds suitable components registered to handle this action (via Intent filters).

  // Example of an implicit intent to open a web page
  val webpage: Uri = Uri.parse("http://www.example.com")
  val intent = Intent(Intent.ACTION_VIEW, webpage)
  // Check if there is an Activity that can handle this intent
  if (intent.resolveActivity(packageManager) != null) {
      startActivity(intent)
  }
  

Intents can also contain additional data (Extras) in key-value pairs.