Android start activity when screen off. I cannot start the application. java to handle Screen OFF & Screen ON Intents: public class ScreenReceiver extends Apr 5, 2010 · Now, the first example will be for an Activity. Because of the life-cycle of an Activity, an Activity is actually easier to deal with as right before the screen turns off onPause () is called and right when the screen turns on onResume () is called, and so naturally we will handle the screen on/off events here: May 23, 2025 · What does "running in the background" mean on Android? "Running in the background" on Android refers to an app continuing to perform tasks (e. xml ファイル内）、インテント フラグ、および ActivityOptions（呼び出し元が指定）で定義されます。 特定のディスプレイをアクティビティの起動のターゲットとするには、 ActivityOption#setLaunchDisplayId(int) を使用します。 デフォルトで Mar 5, 2012 · Your method to turn off the screen did not work for me. These restrictions help minimize interruptions for the user and keep the user more in control of what's shown on their screen. I want the activity to stay on paused mode, and not get to the stopped mode. Aug 27, 2012 · I got a service that start a new activity, while screen is off. You set the flag to keep the screen on all the time, which will drain power. Jun 29, 2019 · Use Android foreground services to build a service that never stops running. Now Android has a lot of restrictions: running in the background, access to the file system, permissions Jun 12, 2025 · Android 12L (API level 32) and higher have extended the flag's definition to enable apps running full screen to activate split-screen mode and then launch activities in the adjacent window. I am running a service in the background, when an event occurs, I want to open an activity even if the app is locked (Similar to alarm app, Nov 29, 2022 · Background restrictions in Android Once upon a time, running in the background was easy. I managed to autostart on a device with android api 25, but the target device is Android api 29. The PendingIntent starts a receiver and the receiver starts the activity. In order to make it work on Android 10 and onwards, you should use a full-screen intent if you really need to start an activity from the background [source]: Android 10 (API level 29) and higher place restrictions on when apps can start activities when the app is running in the background. It wasn't working because I had "Display over other apps" set as "Not allowed", in the Jun 19, 2025 · Declares an activity (an Activity subclass) that implements part of the application's visual user interface. To disable the similar animation that is triggered when calling finish() on an Activity, i. Currently working at Datadog. Note: For the purpose of starting activities, an app running a foreground service is considered to be in the background. Just a humble software developer wandering through cyberspace. To launch an adjacent activity, use FLAG_ACTIVITY_LAUNCH_ADJACENT in conjunction with FLAG_ACTIVITY_NEW_TASK, for example: The FLAG_ACTIVITY_NO_ANIMATION flag works fine for disabling the animation when starting activities. In order to do that i make two class ScreenReceiver. Any that aren't declared there aren't seen by the system… アクティビティ起動動作は、起動モード（アプリの AndroidManifest. startActivity ()" was supposed to launch an activity in a pendingIntent (when the app is in the background). Thank you for help. Basically what I'm asking. For more information Jul 14, 2018 · I'm trying to start an activity with an alarm. g. Might be a bit irrelevant to the question details. e the animation slides from right to left instead, you can call overridePendingTransition(0, 0) after calling finish() and the next animation will be excluded. 4 days ago · Android 10 (API level 29) and higher place restrictions on when apps can start activities when the app runs in the background. In my case, "context. Jul 18, 2014 · I know that this is an old question. All activities must be represented by {@code } elements in the manifest file. Organizer of bcn_rust. How do i open usual activity when screen goes off? Or at least how to turn screen ON if activity won't start (remember, pressing on power button shows up my activity I would really need some help now, because I'm getting really frustrated about this. , syncing data, playing music, tracking location) even when it's not the active app on the screen or the screen is off. Hi, I tried your code, but it didn't work it just pop up the Wakeup activity when the screen it's already on, but not if the phone is "sleeping" Sep 29, 2022 · I am able to display toast message in BootReceiver. Is there a way to achieve this? I want to open my MainActivity class when screen is off. My current issue is that the activity starts in the background and it's impo Learn how to effectively delay the launching of an activity from a BroadcastReceiver when the screen is off in Android development. This also works on the in-animation if you . Any ideas on thi Sep 29, 2025 · Within an adb shell, you can issue commands with the activity manager (am) tool to perform various system actions, such as start an activity, force-stop a process, broadcast an intent, modify the device screen properties, and more. But hopefully, might help someone who lands on this question for a similar issue. Jan 20, 2021 · I am trying to show an activity when the screen is locked. 7lg anjtta w2b s5vyw qjqm usr7 2xg3if mzbcx pkpion qb0l4y