{"id":81423,"date":"2021-07-10T09:00:17","date_gmt":"2021-07-10T03:30:17","guid":{"rendered":"https:\/\/techvidvan.com\/tutorials\/?p=81423"},"modified":"2024-08-03T13:10:07","modified_gmt":"2024-08-03T07:40:07","slug":"android-intent-and-filter","status":"publish","type":"post","link":"https:\/\/techvidvan.com\/tutorials\/android-intent-and-filter\/","title":{"rendered":"Android Intent and Filter"},"content":{"rendered":"

This article will help you understand what android filter is and why it is used in Android. We have seen several android components, and now we will see how one component communicates with the other. Along with this, you will also find an implementation of the concept. Let’s begin.<\/span><\/p>\n

What are Intents in Android?<\/h3>\n

Intents help the application components to communicate with each other. For example, using intents, we can request other applications to perform some tasks.<\/p>\n

One typical example is when you click on any URL from an application; then, you see the browser opening that links for you.<\/p>\n

Intents perform several tasks that can be described as follows:<\/p>\n

1. Starting an Activity<\/h4>\n

An activity is a screen through which a user interacts with his application. Using the intents, you can start a new activity. To start a new activity, we need to call the startActivity() with the intent object.<\/p>\n

For this, you need to pass the current activity context as one parameter and the name of the activity.
\nBelow is an example of the same.<\/p>\n

var intent = Intent(this, NewActivity:: class.java)\r\nstartActivity(intent)\r\n<\/pre>\n
2. Starting a Service<\/h4>\n
A service is a process that doesn\u2019t have any user interface but executes in the background. Using the intent, we can even start a service.<\/p>\n
To start a service, you can pass the intent object to the startService() method.<\/p>\n
3. Sending Broadcast<\/h4>\n
Broadcast notifies the user of any task\u2014for example, Battery low warning. Using intent, we can send broadcasts to our device. For this, we need to pass the intent object to sendBroadcast() method.<\/p>\n
Intent Object<\/h4>\n
An intent object is like a copy or an instance of the Intent class. It encapsulates many pieces of information related to the intent. These pieces of information are helpful to know which component to start and what task to perform.<\/p>\n
Any intent object contains six things:<\/p>\n
Component Name –<\/h4>\n
The component name contains the name of the component to which the system needs to make intent. To set the component name, you can use any of the following functions:<\/p>\n