# AppLaunchChecker added in[version 24.1.0](https://developer.android.com/topic/libraries/support-library/revisions) belongs to Maven artifact com.android.support:support-compat:28.0.0-alpha1 Summary:[Ctors](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#pubctors)\|[Methods](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#) # AppLaunchChecker | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ` public class AppLaunchChecker ` ` extends Object `` ` |---|-----------------------------------------| | java.lang.Object || | ↳ | android.support.v4.app.AppLaunchChecker |
*** ** * ** *** This class provides APIs for determining how an app has been launched. This can be useful if you want to confirm that a user has launched your app through its front door activity from their launcher/home screen, rather than just if the app has been opened in the past in order to view a link, open a document or perform some other service for other apps on the device. ## Summary | ### Public constructors || |--------------------------------------------------------------------------------------------------------------------------------|---| | ` `[AppLaunchChecker](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#AppLaunchChecker())`() ` | | ### Public methods || |-------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` static boolean` | ` `[hasStartedFromLauncher](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#hasStartedFromLauncher(android.content.Context))`(`[Context](https://developer.android.com/reference/android/content/Context.html)` context) ` Checks if this app has been launched by the user from their launcher or home screen since it was installed. | | ` static void` | ` `[onActivityCreate](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#onActivityCreate(android.app.Activity))`(`[Activity](https://developer.android.com/reference/android/app/Activity.html)` activity) ` Records the parameters of an activity's launch for later use by the other methods available on this class. | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#)From class` java.lang.Object ` |-------------------|-------------------------------| | ` Object` | ` clone() ` | | ` boolean` | ` equals(Object arg0) ` | | ` void` | ` finalize() ` | | ` final Class` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` String` | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | || ## Public constructors ### AppLaunchChecker added in[version 24.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` AppLaunchChecker () ```

## Public methods ### hasStartedFromLauncher added in[version 24.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` boolean hasStartedFromLauncher (Context context) ``` Checks if this app has been launched by the user from their launcher or home screen since it was installed. To track this state properly you must call[onActivityCreate(Activity)](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker#onActivityCreate(android.app.Activity))in your launcher activity's[onCreate(Bundle)](https://developer.android.com/reference/android/app/Activity.html#onCreate(android.os.Bundle))method.

| Parameters || |-----------|------------------------------------| | `context` | `Context`: Context to check
| | Returns || |-----------|--------------------------------------------------------------------------------------| | `boolean` | true if this app has been started by the user from the launcher at least once
| ### onActivityCreate added in[version 24.1.0](https://developer.android.com/topic/libraries/support-library/revisions) ``` void onActivityCreate (Activity activity) ``` Records the parameters of an activity's launch for later use by the other methods available on this class. Your app should call this method in your launcher activity's[onCreate(Bundle)](https://developer.android.com/reference/android/app/Activity.html#onCreate(android.os.Bundle))method to track launch state. If the app targets API 23 (Android 6.0 Marshmallow) or later, this state will be eligible for full data backup and may be restored to the user's device automatically. \*

| Parameters || |------------|------------------------------------------------------------| | `activity` | `Activity`: the Activity currently running onCreate
| - ## Annotations - [NotificationCompat.Action.SemanticAction](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Action.SemanticAction) - ## Interfaces - [ActionBarDrawerToggle.Delegate](https://developer.android.com/reference/android/support/v4/app/ActionBarDrawerToggle.Delegate) - [ActionBarDrawerToggle.DelegateProvider](https://developer.android.com/reference/android/support/v4/app/ActionBarDrawerToggle.DelegateProvider) - [ActivityCompat.OnRequestPermissionsResultCallback](https://developer.android.com/reference/android/support/v4/app/ActivityCompat.OnRequestPermissionsResultCallback) - [ActivityCompat.PermissionCompatDelegate](https://developer.android.com/reference/android/support/v4/app/ActivityCompat.PermissionCompatDelegate) - [FragmentManager.BackStackEntry](https://developer.android.com/reference/android/support/v4/app/FragmentManager.BackStackEntry) - [FragmentManager.OnBackStackChangedListener](https://developer.android.com/reference/android/support/v4/app/FragmentManager.OnBackStackChangedListener) - [LoaderManager.LoaderCallbacks](https://developer.android.com/reference/android/support/v4/app/LoaderManager.LoaderCallbacks) - [NotificationCompat.Action.Extender](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Action.Extender) - [NotificationCompat.Extender](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Extender) - [SharedElementCallback.OnSharedElementsReadyListener](https://developer.android.com/reference/android/support/v4/app/SharedElementCallback.OnSharedElementsReadyListener) - [TaskStackBuilder.SupportParentable](https://developer.android.com/reference/android/support/v4/app/TaskStackBuilder.SupportParentable) - ## Classes - [ActionBarDrawerToggle](https://developer.android.com/reference/android/support/v4/app/ActionBarDrawerToggle) - [ActivityCompat](https://developer.android.com/reference/android/support/v4/app/ActivityCompat) - [ActivityManagerCompat](https://developer.android.com/reference/android/support/v4/app/ActivityManagerCompat) - [ActivityOptionsCompat](https://developer.android.com/reference/android/support/v4/app/ActivityOptionsCompat) - [AlarmManagerCompat](https://developer.android.com/reference/android/support/v4/app/AlarmManagerCompat) - [AppLaunchChecker](https://developer.android.com/reference/android/support/v4/app/AppLaunchChecker) - [AppOpsManagerCompat](https://developer.android.com/reference/android/support/v4/app/AppOpsManagerCompat) - [BundleCompat](https://developer.android.com/reference/android/support/v4/app/BundleCompat) - [DialogFragment](https://developer.android.com/reference/android/support/v4/app/DialogFragment) - [Fragment](https://developer.android.com/reference/android/support/v4/app/Fragment) - [Fragment.SavedState](https://developer.android.com/reference/android/support/v4/app/Fragment.SavedState) - [FragmentActivity](https://developer.android.com/reference/android/support/v4/app/FragmentActivity) - [FragmentContainer](https://developer.android.com/reference/android/support/v4/app/FragmentContainer) - [FragmentController](https://developer.android.com/reference/android/support/v4/app/FragmentController) - [FragmentHostCallback](https://developer.android.com/reference/android/support/v4/app/FragmentHostCallback) - [FragmentManager](https://developer.android.com/reference/android/support/v4/app/FragmentManager) - [FragmentManager.FragmentLifecycleCallbacks](https://developer.android.com/reference/android/support/v4/app/FragmentManager.FragmentLifecycleCallbacks) - [FragmentManagerNonConfig](https://developer.android.com/reference/android/support/v4/app/FragmentManagerNonConfig) - [FragmentPagerAdapter](https://developer.android.com/reference/android/support/v4/app/FragmentPagerAdapter) - [FragmentStatePagerAdapter](https://developer.android.com/reference/android/support/v4/app/FragmentStatePagerAdapter) - [FragmentTabHost](https://developer.android.com/reference/android/support/v4/app/FragmentTabHost) - [FragmentTransaction](https://developer.android.com/reference/android/support/v4/app/FragmentTransaction) - [FrameMetricsAggregator](https://developer.android.com/reference/android/support/v4/app/FrameMetricsAggregator) - [JobIntentService](https://developer.android.com/reference/android/support/v4/app/JobIntentService) - [ListFragment](https://developer.android.com/reference/android/support/v4/app/ListFragment) - [LoaderManager](https://developer.android.com/reference/android/support/v4/app/LoaderManager) - [NavUtils](https://developer.android.com/reference/android/support/v4/app/NavUtils) - [NotificationCompat](https://developer.android.com/reference/android/support/v4/app/NotificationCompat) - [NotificationCompat.Action](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Action) - [NotificationCompat.Action.Builder](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Action.Builder) - [NotificationCompat.Action.WearableExtender](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Action.WearableExtender) - [NotificationCompat.BigPictureStyle](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.BigPictureStyle) - [NotificationCompat.BigTextStyle](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.BigTextStyle) - [NotificationCompat.Builder](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder) - [NotificationCompat.CarExtender](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.CarExtender) - [NotificationCompat.CarExtender.UnreadConversation](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.CarExtender.UnreadConversation) - [NotificationCompat.CarExtender.UnreadConversation.Builder](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.CarExtender.UnreadConversation.Builder) - [NotificationCompat.DecoratedCustomViewStyle](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.DecoratedCustomViewStyle) - [NotificationCompat.InboxStyle](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.InboxStyle) - [NotificationCompat.MessagingStyle](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.MessagingStyle) - [NotificationCompat.MessagingStyle.Message](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.MessagingStyle.Message) - [NotificationCompat.Style](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Style) - [NotificationCompat.WearableExtender](https://developer.android.com/reference/android/support/v4/app/NotificationCompat.WearableExtender) - [NotificationCompatExtras](https://developer.android.com/reference/android/support/v4/app/NotificationCompatExtras) - [NotificationCompatSideChannelService](https://developer.android.com/reference/android/support/v4/app/NotificationCompatSideChannelService) - [NotificationManagerCompat](https://developer.android.com/reference/android/support/v4/app/NotificationManagerCompat) - [RemoteInput](https://developer.android.com/reference/android/support/v4/app/RemoteInput) - [RemoteInput.Builder](https://developer.android.com/reference/android/support/v4/app/RemoteInput.Builder) - [ServiceCompat](https://developer.android.com/reference/android/support/v4/app/ServiceCompat) - [ShareCompat](https://developer.android.com/reference/android/support/v4/app/ShareCompat) - [ShareCompat.IntentBuilder](https://developer.android.com/reference/android/support/v4/app/ShareCompat.IntentBuilder) - [ShareCompat.IntentReader](https://developer.android.com/reference/android/support/v4/app/ShareCompat.IntentReader) - [SharedElementCallback](https://developer.android.com/reference/android/support/v4/app/SharedElementCallback) - [TaskStackBuilder](https://developer.android.com/reference/android/support/v4/app/TaskStackBuilder) - ## Exceptions - [Fragment.InstantiationException](https://developer.android.com/reference/android/support/v4/app/Fragment.InstantiationException)