How to recreate activity in android. recreate() to restart currently loaded activity.

How to recreate activity in android. Aug 12, 2020 · When i am on the third activity of app and i change the language when i get back to second activity the text on second and first activity if i want to then i have to recreate those activity as well which i think is bad approach to do it. The problem is I don't have any idea how to get a reference to all activities that haven't been destroyed by the ActivityManager. kt file. Dec 18, 2016 · When application is restarted, all activities created again, so now language changed correctly. class);// New activity intent. Now, this is probably how it's supposed to be, but I do a lot of ini Jun 19, 2019 · if you recreating the MainActivity you will lose it's current state so you can try overriding onResume and check whether you need to enable/disable night mode: Jun 29, 2018 · In each Activity's onCreate() you can maintain the currentLangCode. Apr 25, 2019 · A family member cleared the entirety of my Google Activity from the "My Activity" section of my account, he wanted to clear the Google searches made by another family member several years ago, he was not aware that clearing all activity made thus far on my account would clear my YouTube comments, watched videos and recommended videos that were based on my usage, this has negatively affected my Oct 2, 2015 · Looks like the problem was caused by these lines in the notification-code (taken straight from Android's guide on notifications: TaskStackBuilder stackBuilder = TaskStackBuilder. class); startActivityForResult(myIntent, ACTIVITY_B_REQUEST); This will start Activity B for you. From the main Activity I call the first fragment, then from the the fragment I call the next one. Examples of such an activity include one showing a navigation map screen or a media player playing. It's an old question, but i'm having issues with this solution. Currently I have not done any thing in activity's onResume() method. Activities. For everytime the user presses on a options from the list of themes the key/value for the pressed one is saved via OnPreferenceChangeListener in a SharedPreference and recreate(); is then called. You should add screenSize. Keep track of the activity stack. In order for the Android system to restore the state of the views in your activity, each view must have a unique ID, supplied by the android: id attribute. Check this value in onResume(), if it differs, you can conclude the locale was change and recreate(). create(context); stackBuilder. When C is popped, activity B sees the change in the day/night mode and calls reCreate() to recreate the activity. What you should do however is something like the following:-Inside Second Activity. e. Jul 30, 2012 · You could just restart the current activity but if you are several activities deep then this becomes a bit of a pain. A creates B and B creates C. startActivity(getIntent()); finish(); But I want to refresh the activity NOT from within the activity. startActivity(i); Aug 25, 2014 · In fact you should know that your Activity can be killed and recreated by the Android OS at any moment and this is in fact a normal and expected behaviour of Android. CLEAR_TASK); startActivity(intent); By this way, we started our activity again and killed the one which is in backstack. Then after some action at Activity-B, I go back to Activity-A using Intent like below. How can I save the instance of the fragment that is shown at that moment? I need it to work when the activity is onPause() --> onResume(). Easier to just reset the app back to the start. MainActivity" android:screenOrientation="portrait"> Jan 20, 2012 · When you press the back button while in the second activity, then Android automatically invokes the previous activity on the back stack, which is in your case your main activity. In particular, an activity is recreated anytime a configuration change happens. Also I need it to work when I return from another fragment (pop from backstack). setFlag(Intent. class); i. Go to the MainActivity. Going back to a previous activity could mean two things. Feb 21, 2013 · Seems to work nicely. mySwipeRefreshLayout. Activity C can change the day/night mode. When it's enabled Android will always destroy activities and recreate them when they're backgrounded. Jan 25, 2017 · recreate(); 2. – Nov 12, 2021 · when you call requireActivity(). 1. FLAG_UPDATE_CURRENT); Jun 22, 2020 · I have a MainActivity which has a fragment names FragmentOne. If the activity is finishing, onDestroy() is the final lifecycle Mar 29, 2023 · Recreate the activity. So when you open Fragment B from Fragment A and click back button in Fragment B, then Fragment A gets recreated. setFlags(Intent. apply { putExtra(KEY_SKIP_PIN, true) }) finish() } Nov 13, 2014 · However, your activity might have more state information that you'd like to restore, such as member variables that track the user's progress in the activity. Mar 21, 2010 · Call the recreate() method from where you want to recreate your activity . For every navigation from one screen to another within an Feb 8, 2017 · Completing @Yaro's answer, Inside onCreate, if savedInstanceState is null, try the intent extras. Jul 2, 2021 · Also My Application is potrait onConfigurationChanged() is not calling even i declare android:configChanges="layoutDirection|locale" in Manifest file. The state of the views will be properly restored only if you call super. onCreate with a bundle. For those who are new to Android Development, an activity could be the single screen that the user views in an application. There is an option under Settings -> Developer Options called "Don't keep activities". Aug 31, 2015 · From Activity A I launch Activity B but activity A must stay opened, now after I login in Activity B I save some data in Shared Preferences and I need the layout in Activity A to change according to the shared preferences values, so after login Activity A must recreate to apply changes but still should be behind Activity B. The system always creates a new instance of the activity in the target task and routes the intent to it. The video below shows the effect. Android calls the onResume() callback every time you return to an activity with the back button. private static final int ACTIVITY_B_REQUEST = 0; And then, in your button's onClick listener, you'll start the activity using an intent and the startActivityForResult() function: Intent myIntent = new Intent(ActivityA. This results in essentially the same flow as when the Activity is created due to a configuration change -- the current instance will go through its lifecycle to onDestroy() and a new instance then created after it. Note: I don't want to recreate() my activity. This method will destroy current instance of Activity with onDestroy() and then recreate activity with onCreate(). Jun 15, 2016 · It seems to be that the best solution is to use recreate(); since there is no other way to refresh a whole layout for an activity:. There are a few scenarios in which your activity is destroyed due to normal app behavior, such as. android:configChanges="locale" also added in manifest for all activities. Used BaseActivity for attachBaseContext to set the locale language and extends this Activity for all activities. Mar 30, 2012 · This method is called before an activity may be killed so that when it comes back some time in the future it can restore its state. Code for my Activity: Sep 23, 2013 · You need to intent your current context to another activity first with startActivity. In that case you can just call the finishActivity() function from your code and it'll take you back to the previous activity. You can do it as follows: Jul 15, 2016 · Usually it is better to let Android handle the lifecycle itself. From Activity-A I go to Activity-B through a button press and launching an Intent. You opened the new activity from another activity with startActivityForResult. OnRefreshListener() { @Override public void onRefresh() { Log. 2 or higher device). According to the documentation, that means the following:. In these cases the user expects the UI state to remain the same, but the system destroys the activity and any state stored in it. You have add some condition to avoid this overflow. No call to invalidate() should be needed. More precisely, everything works as expected except the animation. class); stackBuilder. class); activity. this MainActvity has a NavigationDrawer. then in Activity A override onActivityResult(int requestCode, int resultCode, Intent data) there you can refresh your Activity A Jun 14, 2016 · If you only need to update the data which user inputs from your dialog you do not have to redraw whole layout. Before the activity is destroyed, you might want to save some data so Sep 24, 2019 · if you are using sp = activity!!. MainActivity. Disable activity rotation: You can disable the activity rotation by adding android:screenOrientation="portrait" attribute to your activity in the AndroidManifest. Feb 7, 2019 · Jetpack navigation component replaces the fragments. You can do this in the Android Manifest. if your application targets API level 12 or lower, then your activity always handles this configuration change itself (this configuration change does not restart your activity, even when running on an Android 3. To do this I believe it is possible to recreate all of the running activities. Intent intent = new Intent(this, FirstActivity. <activity android:name Jul 14, 2019 · Override the Activity lifecycle methods to see the flow. FLAG_ACTIVITY_CLEAR_TOP); this. recreate() new instance of activity will be created and it takes some time so in this duration, you will see the default background of the window , you can change the defaults but it doest support progress bar , you can change the color and add a drawable to it which I think helps you enough In order to remove the default black screen make a custom theme: in Mar 22, 2022 · android:configChanges="uimode|orientation|screenSize|keyboardHidden|smallestScreenSize|screenLayout" > (Notice the difference between it and the first code) Now that you've added uimode to configChanges, the particular activity won't be able to detect changes when the android system ui dark mode switch is toggled. On one of the tabs is a calendar, which is hooked up to a ViewModel like so: use startActivityForResult(intent, requestCode); to start Activity B from Activity A. . And will give the some facts related to save the Activity State. it works, but after that i need to refresh my FragmentOne. An dirty way is, You can also write. xml file. Then the activity will reload the resources with the correct locale. If you are 'falling back' to activity B, then you'll need to do two things in order to avoid hitting B's onCreate method. So when I click back or call finish() from Activity B, Activity A will be restored to the state when I start Activity B (for example: position of a ScrollView in Activity A, or the value of ProgressBar). Just save the important stuff whenever the system feels like destroying your activity - so you can recreate it with the last state again edit: It is long ago since I last messed around with multiple activities. this, ActivityB. A user rotating their device is a configuration Call recreate() from within the activity code instead of Intent intent = getIntent(); finish(); startActivity(intent); to restart the activity (after API 11 that is). sendBroadcast(intent) Inside Main Activity Apr 13, 2016 · where D is the topmost activity and A is root activity. May 8, 2020 · Activity. Jun 25, 2021 · What you are doing here is essentially creating a strong reference to an activity that isn't even shown to a user anymore. Jun 15, 2020 · This means that you no longer have to manually recreate any Activities when you call the API. Mar 11, 2019 · In the following demo, there are three activities: A, B and C. , before setContentView(R. I also tried using a custom animation, but the animation stops after 20-30ms, regardless of the duration i set in the xml. So that recreating the Activity is not an option seems to indicate a much deeper rooted problem in your apps design that will manifest itself anyway if not solved. layout. getSharedPreferences() inside fragment then please don't use activity/getActivity() to get Context inside fragment because activity/getActivity() retuns null if the your fragment is not currently attached to a parent activity – Aug 21, 2020 · Please refer: Activity class recreate() It create new instance and initiates fresh activity lifecycle. equals instead of == Dec 22, 2016 · I have talked about activity recreating in android. The activity can be destroyed by the android system when you press the back button or home button or when you rotate the screen from portrait to landscape. Sep 5, 2012 · You declared activity A with the standard launchMode in the Android manifest. class); intent. getInstance(this@ SecondActivity). Is there any way to refresh or update activity (without finish and starting In Android, an activity represents a screen that you see on an android device. <activity android:name=". So when you call recreate() it will call onCreate() and will go in endless loop. setOnRefreshListener( new SwipeRefreshLayout. startActivity(refresh); With the method from Activity class: recreate(); I hope your minimum SDK version will support because it was introduce in SDK 11. addParentStack(FieldAgent. I only want to change language but didn't want to recreate the activity! On Button Click, i set the Locale! Mar 29, 2023 · Your activity can handle the configuration change itself, or it can allow the system to destroy the activity and recreate it with the new dimensions. After that you can finish your current activity from where you redirect. java Sep 2, 2016 · This method doesn't work for Android SDK 23, Android Studio even provides a relevant warning: Calling detach() and attach() in the same FragmentTransaction is a no-op, meaning it does not recreate the Fragment's view. When a device is low on resources, the system might destroy an activity, requiring your app to recreate that activity when the user returns to your app. I have more than one fragments, each fragment has listViews which has buttons. and also support all screen. recreate() to restart currently loaded activity. May 20, 2024 · If the Activity isn't recreated, then the ViewModel has the onCleared() method called, where it can clean up any data it needs to before being destroyed. Have you considered using Fragments instead of multiple activities Apr 22, 2013 · Correct, as Mr Budius is saying, to update your data only, don't finish and startActivity again and again, its heavy task for Android system, its this process Activity manager, Task Manager everything will be included, find another way to update data only, if you can tell the scenario we can help you in how to update data of activity instead of recreating it Jan 6, 2015 · I want to be able to change the display language in my Android application at runtime without the need to restart the app. The same happens in activity A when activity B is popped. i try to delete all rows from my database. Oct 8, 2015 · Second, you can call activity. And then use the appropriate method to check activity current state like isChangingConfigurations() Example code snippet. getPendingIntent(0, PendingIntent. When the user presses the Back button or your activity signals its own destruction by calling finish(). Oct 12, 2015 · We basicly, casted activity instance to our activity for letting us call our method that you can refresh ui. Comments are added inside the code to understand the code in more detail. For example, if activity B is launched in front of activity A, and at some point activity A is killed to reclaim resources, activity A will have a chance to save the current state of its user interface via this Feb 8, 2023 · In android, Preserving and restoring an activity’s UI state in a timely fashion across system-initiated activity or application destruction is a crucial part of the user experience. mainscreen); I think that the best choice for you is using SwipeRefreshLayout View in your layout. i("Fav ", "onRefresh called from SwipeRefreshLayout"); // This method performs the actual data-refresh operation. For more information, see the Android docs for Tasks and Back Stack. Even if such activities lose focus, the user expects their UI to continue updating. To apply the theme, make sure you do it before any View is drawn, i. kt file and refer to the following code. It does not add the fragments to stack. Intent i = new Intent(this, MainActivity. You can distinguish between these two scenarios with the isFinishing() method. val intent = Intent(BROADCAST_RECREATE_MAIN) LocalBroadcastManager. My listView is populated by the data on the server. I think this makes sense, since the life cycle model of android assumes you start activities and return to the first activity. ) Make B a "SingleTask" activity. If you would like the view to be recreated, separate these operations into separate transactions. Your activity will be recreate as a new instance remember! Everything will be started afresh. Feb 6, 2022 · Step 3: Working with the MainActivity. Nov 13, 2014 · Once an activity is stopped and destroyed how do we start it again , this article is all about how to recreate an activity Call the method recreate directly From the documentation for recreate(): Cause this Activity to be recreated with a new instance. May 20, 2024 · An activity in the Paused state may continue to update the UI if the user is expecting the UI to update. Edit: Use . Jan 23, 2014 · Recreate - (You can restore state of activity) This results in essentially the same flow as when the Activity is created due to a configuration change -- the current instance will go through its lifecycle to onDestroy() and a new instance then created after it. This is a great option to leave enabled when developing because it simulates the worst case scenario. finish(); this. FLAG_ACTIVITY_CLEAR_TOP); startActivity(intent); finish(); // Call once you redirect to another activity Jun 22, 2022 · Working on an Android app where each user can have multiple accounts under the same login. Jan 19, 2009 · In my Android application, when I rotate the device (slide out the keyboard) then my Activity is restarted (onCreate is called). You can only set the user name to the related textview and dismiss dialog fragment. Intent intent = new Intent(getContext, MyActivity. Then the activity will reload the resources with Aug 10, 2023 · I don't think you can achieve this look through the navigation animation Api - but you can fade in a black full screen box over the top of the mainscreen composable when you navigate to screen settings. There is a single activity with a fragment per tab - based on the Android sample Bottom Navigation. Below is the code for the MainActivity. Aug 4, 2016 · since when you recreate the activity the same activity instance is used, the data in the intent will still be there after recreate. addNextIntent(intent); PendingIntent pendingIntent = stackBuilder. Now, when the Activity resumes, it makes every View to draw itself. To be brief, this means that only one 'instance' of B will ever exist within this Task. For more information about the multi-window lifecycle, see the explanation of the multi-window lifecycle in the Multi-window support page. javaClass). Q : How can i recreate the activity with the key i need, for example smth like this: fun restartLockableActivity() { startActivity(Intent(this, this. To simulate these conditions, call recreate(): May 30, 2017 · In an Android app, activities get recreated all the time. Then set RefreshListener like. If that's not there, and the second activity finishes, leaving no activity on the screen, I can see why Android tries to "make things right" by restarting an activity. i have List of items in this fragment and these data are save in my database. This will force the activity to remain in portrait mode and prevent it from rotating. Apr 28, 2015 · In Android, from Activity A, if I start new Activity B, Android will automatically save all the state of Activity A. There are a few scenarios in which your activity is destroyed due to normal app behavior, such as when the user presses the Back button or your activity signals its own destruction by calling finish(). i have a method named updateUI in my FragmentOne but how could i access that method? when i make that method Oct 31, 2017 · Intent refresh = new Intent(activity, StartupActivity. Oct 27, 2010 · Android activities are stored in the activity stack. osrvh sbgzce nmy eavf rmucugl hibc ysevvb lvxwo vcyeoozr jtxfufd