In case if we create Intent Filter for an activity, there is a possibility for other apps to start our activity by sending a certain type of intent otherwise the activity can be started only by an explicit intent. If we want to demonstrate our intent filters, we have to define them all under the activity in Manifest file.In android, Intent Filter is an expression in the app’s manifest file ( ActivityMainfest.xml) and it is used to specify the type of intents that the component would like to receive.
Lastly, let’s take a look how to filter our intent. Standart Extra Data: EXTRA_EMAIL, EXTRA_PHONE_NUMBER, EXTRA_ALARM_COUNT, EXTRA_TEXT, EXTRA_TİTLE This is a Bundle of any additional information. Specifies an explicit name of a component class to use for the intent. Specifies an explicit type (a MIME type) of the intent data. For example, CATEGORY_LAUNCHER means it should appear in the Launcher as a top-level application, while CATEGORY_ALTERNATIVE means it should be included in a list of alternative actions the user can perform on a piece of data. Gives additional information about the action to execute. The data to operate on, such as a person record in the contacts database, expressed as a Uri. If you want to check other action types, you can find all of them link below. Standard Categories: CATEGORY_LAUNCHER, CATEGORY_HOME, CATEGORY_TEST, CATEGORY_TAB. Standard Broadcast Actions: ACTION_TIME_CHANGED, ACTION_PACKAGE_ADDED, ACTION_BATTERY_CHANGED, ACTION_POWER_CONNECTED, ACTION_SHUTDOWN…
Standard Activity Actions: ACTION_VIEW, ACTION_ATTACH_DATA, ACTION PICK, ACTION_SEND, ACTION_GET_CONTENT, ACTION_DIAL…. The general action to be performed, such as ACTION_VIEW, ACTION_EDIT, ACTION_MAIN, etc.
Now that we know about Intent types, let’s examine the Intent structure a little bit.
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