- Is it possible activity without UI in Android?
- What are the types of broadcast receivers in Android?
- What is splash screen in Android?
- What is PendingIntent Flag_update_current?
- How do I get a pending intent?
- How many types of services are there in Android?
- What is broadcast message in Android?
- What is sticky intent in android?
- What is the use of broadcast receiver in android?
- What is difference between intent and intent filter in Android?
- What is intent filter in Android?
- What is the use of intent in android?
- What is PendingIntent callback service?
- What is Android Alarm Manager?
- What is the use of manifest file in Android?
- What is an activity in Android?
- What is the difference between intent and PendingIntent?
- What is the time limit of broadcast receiver in android?
Is it possible activity without UI in Android?
The answer is yes it’s possible.
Activities don’t have to have a UI.
It’s mentioned in the documentation, e.g.: An activity is a single, focused thing that the user can do..
What are the types of broadcast receivers in Android?
There are two types of broadcasts received by receivers and they are:Normal Broadcasts: These are asynchronous broadcasts. Receivers of this type of broadcasts may run in any order, sometimes altogether. … Ordered Broadcasts. These are synchronous broadcasts. One broadcast is delivered to one receiver at a time.
What is splash screen in Android?
Android Splash Screen is the first screen visible to the user when the application’s launched. … Splash screens are used to display some animations (typically of the application logo) and illustrations while some data for the next screens are fetched.
What is PendingIntent Flag_update_current?
From docs FLAG_UPDATE_CURRENT is : Flag indicating that if the described PendingIntent already exists, then keep it but replace its extra data with what is in this new Intent. For use with getActivity(Context, int, Intent, int), getBroadcast(Context, int, Intent, int), and getService(Context, int, Intent, int).
How do I get a pending intent?
Create an Intent that starts the Activity . Set the Activity to start in a new, empty task by calling setFlags() with the flags FLAG_ACTIVITY_NEW_TASK and FLAG_ACTIVITY_CLEAR_TASK . Create a PendingIntent by calling getActivity() .
How many types of services are there in Android?
four different typesThere are four different types of Android services: Bound Service – A bound service is a service that has some other component (typically an Activity) bound to it. A bound service provides an interface that allows the bound component and the service to interact with each other.
What is broadcast message in Android?
Android apps can send or receive broadcast messages from the Android system and other Android apps, similar to the publish-subscribe design pattern. … When a broadcast is sent, the system automatically routes broadcasts to apps that have subscribed to receive that particular type of broadcast.
What is sticky intent in android?
Sticky Intent is also a type of Intent which allows communication between a function and a service sendStickyBroadcast(), performs a sendBroadcast(Intent) known as sticky, the Intent you are sending stays around after the broadcast is complete, so that others can quickly retrieve that data through the return value of …
What is the use of broadcast receiver in android?
A broadcast receiver (receiver) is an Android component which allows you to register for system or application events. All registered receivers for an event are notified by the Android runtime once this event happens.
What is difference between intent and intent filter in Android?
An intent is an object that can hold the os or other app activity and its data in uri form.It is started using startActivity(intent-obj).. \n whereas IntentFilter can fetch activity information on os or other app activities.
What is intent filter in Android?
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 is the use of intent in android?
Intents are used to signal to the Android system that a certain event has occurred. Intents often describe the action which should be performed and provide data upon which such an action should be done. For example, your application can start a browser component for a certain URL via an intent.
What is PendingIntent callback service?
To do this without needing a service that is always running in the background consuming resources, detected activities are delivered via an Intent . The application specifies a PendingIntent callback (typically an IntentService ) which will be called with an intent when activities are detected.
What is Android Alarm Manager?
Android AlarmManager allows you to access system alarm. By the help of Android AlarmManager in android, you can schedule your application to run at a specific time in the future. … The Android AlarmManager holds a CPU wake lock that provides guarantee not to sleep the phone until broadcast is handled.
What is the use of manifest file in Android?
Every app project must have an AndroidManifest. xml file (with precisely that name) at the root of the project source set. The manifest file describes essential information about your app to the Android build tools, the Android operating system, and Google Play.
What is an activity in Android?
An activity represents a single screen with a user interface just like window or frame of Java. Android activity is the subclass of ContextThemeWrapper class.
What is the difference between intent and PendingIntent?
Conclusion. In conclusion, the general and main difference between Intent and PendingIntent is that by using the first, you want to start / launch / execute something NOW, while by using the second entity you want to execute that something in the future.
What is the time limit of broadcast receiver in android?
10 secondsAs a general rule, broadcast receivers are allowed to run for up to 10 seconds before they system will consider them non-responsive and ANR the app.