0- Intent is used to swith between activities
- In Android there are different ways and differnet codings to do different operations, But to switch between Activities there is only on option available that is Intent only.
- Intents are also useful to share data between activities.
Intents are divided into twe types
- Implict Intent (opening build-in activities like camera) and
- Explict Intent (switching between user defined activites)
