See more basics on Android All the components are activated by a message called Intents. Intents bind individual components to each other at runtime, whether the component belongs to your application or another. An intent is created with an Intent object, which defines a message to activate either a specific component or a specific type of component—an intent can be either explicit or implicit, respectively. An intent is an abstract description of an operation to be performed. Intents are send to the Android system via a method call, e.g. via the startActivity() method. They can be said as a message which allow android components to request functionality from other components. Intent Filters: Activities and intent receivers include one or more filters in their manifest to describe what kinds of intents or message they can handle or want to receive.An intent filters lists a set of requirements, such as datatypes,action requested and URI format that the intent or messa...
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