An intent filter is an expression in an app’s manifest file that specifies the type of intents that the component would like to receive. For instance, by declaring an intent filter for an activity, you make it possible for other apps to directly start your activity with a certain kind of intent.
What does an Intent filter do?
An intent filter declares the capabilities of its parent component — what an activity or service can do and what types of broadcasts a receiver can handle. It opens the component to receiving intents of the advertised type, while filtering out those that are not meaningful for the component.
How do you handle an Intent filter?
To declare an intent filter, add <intent-filter> elements as children of the <activity> describing the default root activity of the application. For each <intent-filter> , you must add: one or more <action> elements to it to describe which actions the activity can perform. the <category android_name=”android.
What is Intent filter in Android medium?
Intent filter is a way for Android components to declare their capabilities to the Android system. … The Intent Resolution uses the following information to map the Intent to the appropriate Android component: The action. The type (data type and URI) The category.
Where do I put the Intent filter?
To declare an intent filter, add <intent-filter> elements as children of the <activity> describing the default root activity of the application. For each <intent-filter> , you must add: one or more <action> elements to it to describe which actions the activity can perform.
How do you use Intent?
To start an activity, use the method startActivity(intent) . This method is defined on the Context object which Activity extends. The following code demonstrates how you can start another activity via an intent. # Start the activity connect to the # specified class Intent i = new Intent(this, ActivityTwo.
Do not declare intent filters for your services?
always use an explicit intent to start your own service and do not declare intent filters for your service. To avoid the scenario mentioned above, Android allows to start your service with an explicit Intent. In your explicit Intent, you provide the exact package name and Service class that needs to be initiated.
What is android intent Action view?
action. VIEW. Display the specified data to the user. An activity implementing this action will display to the user the given data.
What is difference between intent and intent filter in Android?
Although intent filters restrict a component to respond to only certain kinds of implicit intents, another app can potentially start your app component by using an explicit intent if the developer determines your component names.
What is exported activity in Android?
This is probably your app’s MainActivity , and since the launcher on Android could be a regular application, this activity has to be exported or the launcher won’t be able to start it. This activity is responsible for handling the “open with” action from other apps.
What is manifest XML in Android?
The Android Manifest is an XML file which contains important metadata about the Android app. This includes the package name, activity names, main activity (the entry point to the app), Android version support, hardware features support, permissions, and other configurations.