You asked: How do I know if my android activity is destroyed?

How do I know if my activity is finished?

2 Answers

  1. onDestroy() – for final cleanup.
  2. isFinishing() – right after act. finish() is called it will return true.
  3. onStop() – when the Activity is killed by framework process. ( …
  4. onPause() – when the Activity is covered by any other Activity.
  5. onBackPressed() – capturing the event of hardware Back key triggered by user.

How do I know if my Android service is destroyed?

The proper way to check if a service is running is to simply ask it. Implement a BroadcastReceiver in your service that responds to pings from your activities. Register the BroadcastReceiver when the service starts, and unregister it when the service is destroyed.

How is an activity killed in Android system?

Android does not kill Activities “separately“, it kills the whole app process with all Activities. The only way to get an Activity killed by the system is to set Don’t keep Activities flag in device’s Developer Options. However this option is just for development, not for applications in release.

How do I know if my Android Backstack is empty?

you can use fragment stack while pushing fragments inside it. Use getBackStackEntryCount() to get count. If it is zero, means nothing in backstack.

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What is the life cycle of foreground activity in Android?

Activity Lifecycle

Lifecycle Method Description
onCreate() The activity is starting (but not visible to the user)
onStart() The activity is now visible (but not ready for user interaction)
onResume() The activity is now in the foreground and ready for user interaction

What is the life cycle of Android activity?

Android Activity Lifecycle methods

Method Description
onCreate called when activity is first created.
onStart called when activity is becoming visible to the user.
onResume called when activity will start interacting with the user.
onPause called when activity is not visible to the user.

What is an activity in Android?

An activity provides the window in which the app draws its UI. This window typically fills the screen, but may be smaller than the screen and float on top of other windows. … Typically, one activity in an app is specified as the main activity, which is the first screen to appear when the user launches the app.

What is Android system services?

They are system (services such as window manager and notification manager) and media (services involved in playing and recording media). … These are the services that provide application interfaces as part of the Android framework.

What is Start_sticky?

START_STICKY means the system will eventually restart your Service after it has been killed by the system. … START_REDELIVER_INTENT is like START_STICKY, but the system will retain the Intent used for starting the Service and redeliver it when restarting.

Which methods are called when you reopen minimized app?

If you open your app, after you minimize your application, then the method “onResume()” will be called.

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What is a visible activity?

A visible process is doing work that the user is currently aware of, so killing it would have a noticeable negative impact on the user experience. … It is running an Activity that is visible to the user on-screen but not in the foreground (its onPause() method has been called).

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