Android lock application programmatically. I'm in the process of evaluating if and how a CF .

Android lock application programmatically May 10, 2016 · Before you get totally into this post, I would like to warn you regarding the use of these functionalities, because they aren't user-friendly and <strong>Android Play Apr 28, 2010 · This part is disabling home and recent apps button and even after releasing lock with SCREEN_ORIENTATION_FULL_SENSOR, its in disabled state. 0. You can actually also do ADB over WiFi after you set it up the first time c. I've tried lots of apps but it's kind of hard finding THE app fitting all my needs: I'd like to totally block usage at certain times of the day for selected apps. com/questions/9724428/how-can-i-set-up-screen-lock-with-a-password-programmatically This is a class I wrote to handle locking and unlocking the screen orientation. is there a way to activate it on my app programmatically? Sep 3, 2018 · I want the app to be unclosable. Aug 1, 2023 · Conclusion Maximizing the benefits of using an Android device can involve small yet effective changes - such as locking the screen orientation. xml May 29, 2012 · I know that an app can be made full screen by tag in the manifest of the activity android:theme="@android:style/Theme. Nov 5, 2016 · In My application I am getting Screen Overlay Issue in android 6+ I tried to Turn on But for that I need to Give a Permission for Screen Overlay I followed this I am unable to Integrate in my acti Android includes APIs to help people using dedicated devices focus on their tasks. Jul 23, 2019 · It’s also important to remember that if you build an app from the Android Studio, it will be signed with a default key from Android and the application will become a non-test admin. WAKE_LOCK" /> You can use the AlarmManager 1 class to fire off an intent that starts your activity and acquires the wake lock. 2 through program. I can think of no polite way to state it. Is there any way to lock it programmatically when the app is running? Jan 24, 2018 · as I understood, from android 5. May 25, 2012 · just wondering whether it's possible to change the screen timeout using code in Android May 6, 2012 · Is there a way to disable the screensaver while my app is running? The dimming of the screen is what I mean. md Sep 3, 2018 · I want the app to be unclosable. But didn't know wher Jul 19, 2011 · How do I set it so the application is running in portrait mode only? I want the landscape mode to be disabled while the application is running. My app is to remote lock the device. Jan 3, 2025 · Android Oreo’s introduction of commands to programmatically change the lock screen PIN, password, or pattern marks a significant enhancement in user experience, security management, and application capabilities. Nov 9, 2023 · 🌟In this tutorial, we delve into the process of locking the screen programmatically in Android applications. (Preferably via a button or something similar) Mar 30, 2021 · I want to integrate fingerprint lock into my application. You don't need to be a tech expert to lock or unlock the orientation; its' easy with just a few simple steps! Dec 12, 2018 · I am developing an android app which uses fingerprint/face recognition for unlocking the app. The guide also explains how you can configure activities, services, content providers, and broadcast receivers to restrict how other apps can interact with your app. The application on Windows Mobile phones are run in kiosk mode where the applic Learn Android - Lock Screen's rotation programmaticallyIt is very common that during development, one may find very useful to lock/unlock the device screen during specific parts of the code. Your custom home app can use some, or all, of the following APIs: Run the system in an immersive, kiosk-like fashion where devices are locked to a whitelisted set of apps using lock task mode. So a developer has to explicitly write a program where the orientation changes without the user to invoke it May 21, 2015 · Is there anyway to handle (block/lock)these apps as floating apps comes up over my blocking screen. Apr 8, 2012 · I would like to programmatically enable/disable Accessibility Services listed under Settings->Accessibility option. This example demonstrate about How to lock the Android device programmatically. Jul 10, 2013 · Hello Friends, I am Going to share very important and useful code for start your application when phone is lock. com/questions/17923992/how-to-lock-unlock-phone-programmatically-android https://stackoverflow. Feb 10, 2025 · The features in this guide describe device management capabilities you can implement in your device policy controller (DPC) app. But when it comes to gaming or any other multimedia service such as watching a video, the screen orientation must change functionally from Portrait to landscape or vice-versa when the functionality is not required. After some time, if you would like to add some new features you will realize that it’s not possible to install a new version. Android includes support for enterprise apps by offering the Android Device Administration API. Nov 26, 2023 · Android — Lock Orientation Programmatically In Android, locking or unlocking the orientation during runtime can be useful in various scenarios to provide a better user experience and ensure proper … Jul 29, 2013 · In my application, I need to lock and unlock phone. com/training/scheduling/wakelock. Jul 23, 2025 · Many times in android applications we have to programmatically change the screen orientation to perform some task. In that I need to detect screen recording software which are running Aug 24, 2015 · I also can show notification on notification bar system in android via these codes. Jun 24, 2019 · I want to enable fingerprint and face unlock for my application. permission. Also, I want the locked orientation to be portrait mode on phones and lands Jul 15, 2025 · In Android it's seen that screen timeout will be set for 30 seconds or it is set by the user manually in system settings, to avoid battery drain. May 10, 2023 · Learn how to create an Android app with a custom lock screen through this comprehensive tutorial, complete with code snippets and examples. The screen should not go off in my second activity unless the "lock" key is pressed manually. This helps prevent sudden rotation shifts that might impact battery performance while also improving how users interact with their devices. Please guide me in right direction. As some folks needs help in Unlocking device after locking programmatically, I came through post Android screen lock/ unlock programatically, please have look, may help you. This guide explains how to check the set of permissions that another app has declared. But when i click on the enable button the Activity pops up for few milliseconds and then closes automatically The log Feb 5, 2023 · With your . To enable landscape orientation on large screens, set your app manifest to handle orientation changes by default. Jun 29, 2019 · Use Android foreground services to build a service that never stops running. Learn how to disable screen lock in Android programmatically with this step-by-step guide. This will turn on the screen and keep it on. Similarly, the Power key on a Single press locks the device, but This example demonstrates how do I lock screen orientation on all android devices programmatically. Jun 18, 2020 · I am developing an Android app whose orientation I don't want changed to landscape mode when the user rotates the device. Nov 9, 2023 · Don't skip the video as every step is important. The reason there are so many answers, each different, for the same simple question is that this API, like many others in Android, is horribly designed. You can use whichever approach is best for your app. A DPC app can run in profile owner mode on personal devices or in device owner mode on fully managed devices. You can find the source code here. Lock Screen Device App Tutorial for Android. Note Mar 4, 2016 · How do I programmatically disable screen rotations for an entire Android application? Jun 27, 2025 · To lock screen orientation on all android devices programmatically, create a new project in Android Studio and go to File ⇒ New Project. net MAUI app? I have been searching for a while, but I can't figure out how to do it. In this article, we will take a look at the implementation of fingerprint authentication. b. Learn how to programmatically lock screen orientation in Android with this step-by-step guide and code snippets. These keys respond to a press. An app can set a wake lock to keep the device from suspending. Not necessarily a big deal. We’ll cover the key concepts, methods for creating custom lock screens, and how to integrate security features such as PIN, password, or fingerprint authentication. This demo will unlock your phone lock and start another activity class form first screen. Sep 1, 2022 · Is there a way for you to lock your screen orientation in your . Basic Feb 10, 2023 · I am trying to create an app that, upon launching, will lock the phone. Here password is set by Jul 9, 2013 · I need to disable Home and other system buttons in my Android application. We recommend you start to prepare now for this change. If you do use a wake lock, you should release it as soon as possible. Releasing the wakelock will allow the device to go to sleep on its own. To learn more and see the migration options, read Device admin deprecation. Jul 15, 2025 · By production, Android devices are provided with specific physical keys, such as Volume keys, Power key, Back key, Home key, and Activities key. Choose the right Turn Other Installed Apps Into Locked-Down Kiosk Programmatically on Android This sample shows how to enable lock task mode in other installed apps, and turn them into a screen pinned kiosk. The first thing we need to do before Ho do i lock my android phone programmatically ? I tried following this example. Thank in advance! Mar 5, 2012 · <uses-permission android:name="android. Fullscreen" Is it possible to switch to full screen mode from within the app, programmatically? Jan 13, 2020 · I can make an app lock as long as I set the device owner with an EMM or adb commands. Oct 31, 2025 · Permissions aren't only for requesting system functionality. I have fingerprint unlock code and it is working fine if the user is already registered his fingerprint. Any special permission for that activity?. I expect to Sep 19, 2025 · Simplify your work or personal routine with an Android auto launch app. Creating The Notification Let’s start by creating a simple notification that’ll be used later to show an Activity on the look screen. It allows you to create an application that can fully manage a … 3 days ago · To add biometric authentication to your app using the Biometric library, complete the following steps: In your app module's build. May 22, 2024 · Learn how to disable landscape mode for specific views in your Android app with our step-by-step guide. People who knew the password can only access the app. is there a way to activate it on my app programmatically? Jul 7, 2011 · This page discusses methods to programmatically restart an Android app, providing insights and examples for developers. In this article, it's been discussed how to set a sample image as the home screen wallpaper programmatically. Commonly, a lock provides exclusive access to a shared resource: only one thread at a time can acquire the lock and all access to the shared resource requires that the lock be acquired first. I was able to achieve it with this code: Mar 20, 2024 · Locking Screen Orientation in Android Java To lock the screen orientation in an Android application, you can set the desired orientation programmatically or in the AndroidManifest. Is there a way to detect when an app is sent to the background or broug Android Jetpack Compose – Change the Screen Orientation Programmatically using a Button #jetpackcompose #androidappdevelopment #kotlin #androidapp #androidjetpackcompose Many times in android Jun 6, 2016 · Android FAQ: How do I make my Android app display in landscape mode only? To get an Android application to display in landscape mode only (to lock it in landscape mode), add this line to your Activity definition in the AndroidManifest. Nov 12, 2025 · Device manufacturers can implement their Lock screen for secondary displays, provided the fundamental security requirement is fulfilled. xml file: android:screenOrientation="landscape" For example, I’m writing an Android football game right now, and this is the definition for my main activity in Jan 16, 2019 · 7 Is there any way to, in my app, to redirect a user to a specific settings 'page'? My app works as a lock screen app, so I want to be able to redirect the user directly to the "Lock Screen" section of the Android settings. When the phone is in the lock mode, it will turn off the phone while the USB is plugged for prevent other users from accessing the phone data. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. I try to show notification on lock screen by using these ways but not worked : 1 - Add <uses-permission android:name="android. Dec 9, 2011 · I have three activities in my app. Currently working at Datadog. I May 7, 2015 · I need to programmatically turn the screen on when the user turns off with power button, and yes I always have the correct flags in the Activity to keep screen on, but it does not avoid user pressing May 19, 2023 · In this blog post, we discussed various methods to disable the screen lock on your Android device programmatically, and their implications and recommendations. The same keys have particular functionality on the nature of the press. When message is received with some code words to lock then it locks the phone. This document contains code samples and you can also use the Test DPC app as a source of sample code for Android's enterprise features. Biometric authentication allows you to quickly unlock your device with your fingerprint or face, confirming it’s really you who’s using the app. Useful when the proximity sensor is disabled or when the device has no proximity sensor. This table Jun 6, 2020 · In Android app development, ensuring that your application runs in Landscape mode can be crucial for certain types of applications, such as games or media players. Set custom rules to open essential apps instantly—whether at home or in the office—and boost efficiency every day. Just a humble software developer wandering through cyberspace. We will create two activities of different screen orientation. Any suggestions? P. Mar 15, 2012 · Is there any one that can help me with a code to set a password to lock the screen ? thx Jul 5, 2022 · Learn how to lock an Android device to one app or screen, a feature called app pinning (formerly screen pinning), and how this can be used for business use cases. I was able to achieve it with this code: Jun 28, 2023 · A step by step guide for limiting an Android device's orientation to landscape, portrait or another orientation within an app. You can use them in May 23, 2021 · Thinking of adding your own app lock to your android app? Adding a biometric app lock 🔒 to protect your user from unauthorized usage, protect their data and information can be really helpful. Build apps that give your users seamless experiences from phones to tablets, watches, headsets, and more. NoTitleBar. How do I do it programmatically? 4 days ago · Learn about Android's device compatibility mode, ensuring your app works seamlessly across various devices and screen sizes. When the device is locked, information should be securely concealed on all displays. This video describes briefly about how to create an android application that helps to detect whether device has screen lock enabled or not. Apr 14, 2024 · This guide will walk you through the process of setting up a lock screen programmatically in an Android application using Java. In both cases this is your activity and prefs is a SharedPrefences object, used for saving information about the state of the lock. If you are making it an 'admin app' this means you have signed the device image correct? Therefore you control the full flashing of the device - you can do anything in this scenario. Does anyone know how to turn off Android devices programmatically so other people can't access the data while a device on the lock Aug 25, 2014 · The problem is my service isn't running and my LockScreen activity is not showing when i open an application. Example: MX Player (see at Google Play) - you can press "lock" icon at player screen and it locks all hardware and software Learn how to programmatically lock or restrict Android hardware buttons and screen using code. This cookbook works best for developers that already have a dedicated device app—if you’re just getting started, read Dedicated devices overview. Application demonstrates basic usage of Android Lock Task mode for creating Kiosk app Learn how to lock your Android app in portrait or landscape mode programmatically with step-by-step instructions and code examples. Alarms have these characteristics: They let you fire Intents at set times and/or intervals. To run the app from android studio, open one of your project's activity files and click the Run icon from the toolbar. Learn how to set a lock or PIN programmatically for your application with expert guidance and coding examples. html Feb 25, 2025 · </RelativeLayout> Using android:keepScreenOn="true" is equivalent to using FLAG_KEEP_SCREEN_ON. Learn how to programmatically lock the screen on Android devices with this detailed guide, including code snippets and common mistakes. Mar 2, 2010 · Is there a way to lock orientation during runtime? For example I'd like to allow the user to lock the screen to landscape if the user currently in landscape and toggle the menu option. android. We would like to show you a description here but the site won’t allow us. I searched for it, I found many answers, I tried them but no one is working. Sep 16, 2011 · I've been working on push notifications and I am able to implement it and display it on status bar, the problem I am facing is that I want to display it even if the phone is lock, Under the lock sc Apr 19, 2018 · It’s also important to remember that if you build an app from the Android Studio, it will be signed with a default key from Android and the application will become a non-test admin. 👨‍💻 Who Is This For?: This tutorial is suitable for Android developers looking to add screen lock functionality to their applications. I want to keep the screen awake when it is in the second activity. However, using a wake lock can quickly drain the device battery. Feb 10, 2025 · This cookbook helps developers and system integrators enhance their dedicated device solution. Jul 5, 2012 · In my app there is a long loading process, and if the devices puts on the screen lock, my process stops for some reason. I could start Accessibility Intent like below: Intent intent = new Intent(android. To programmatically enforce this orientation, you need to set the orientation to LANDSCAPE for each activity class in your application. biometric library. The user has a choice to enable/disable the lock using switch. Feb 10, 2025 · The features in this guide describe security management capabilities you can implement in your device policy controller (DPC) app. i used this to write my background service (Blocking android apps programmatically @Amit Gupta answer) and (Using Service to run background and create notification @Muhammad Zeeshan Karamat Answer) Jan 16, 2019 · 7 Is there any way to, in my app, to redirect a user to a specific settings 'page'? My app works as a lock screen app, so I want to be able to redirect the user directly to the "Lock Screen" section of the Android settings. Starting with Android 9 (API level 28), some admin policies will be marked as deprecated when invoked by a device admin. We hope this blog post was informative and helpful to you. In that tutorial, you are going to learn how to lock your screen's device programmatically on Android. You can also restrict how other apps can interact with your app's components. Step-by-Step May 10, 2016 · I would like to warn you regarding the use of these functionalities because they arent user friendly and Android Play Store wouldn’t approve. Jul 12, 2025 · Example: android:screenOrientation="orientation_type"> How to change Screen orientation? Here is an example of an Android application that changes screen orientation for Landscape and Portrait mode. gradle file, add a dependency on the androidx. Jun 12, 2023 · Creating an Android Device Owner app in 2023 Device Owner is an Android Enterprise feature supported by Android OS since version 5. Don't skip the video as every step is important Jun 10, 2021 · By default Android will show the same notification it shows when the device is unlocked but in some cases, such as a phone call, you might want to display a full screen activity. For instance, while showing a Dialog with information, the developer might want to lock the screen's rotation to prevent the dialog from being dismissed and the current activity from being rebuilt to 4 days ago · Alarms (based on the AlarmManager class) give you a way to perform time-based operations outside the lifetime of your application. In the activity or fragment that hosts the biometric login dialog, display the dialog using the logic shown in the following code snippet: Kotlin Java More Learn how to create a Lock Screen Device Application for Android with Android Studio. Custom Home apps These recipes are useful if you’re developing an app to A lock is a tool for controlling access to a shared resource by multiple threads. You typically call these APIs from a custom home app that you develop. I want to set a pin or passwords on selected applications for a particular amount of time to prevent them from opening the Feb 10, 2023 · I am trying to create an app that, upon launching, will lock the phone. Jul 23, 2025 · Setting wallpaper in Android programmatically is helpful when the application is fetching wallpapers from the API library and asking the user whether to set the wallpaper for the home screen or not. Follow our how-to recipes to find solutions for dedicated-device behaviors. In this article its been demonstrated, how to keep the device screen awake. DEVICE_POLICY_SERVICE); m 3 days ago · Device admin deprecation. Feb 19, 2015 · Is it possible to prevent the screen recording in Android Application? I would like to develop an Android Secure Application. Activity. This will lock the orientation for both the activities. Since I have device ownership, the user is Well, if the phone doesn't lock until 5 seconds after the screen locks, your code won't detect the lock screen until the phone's screen is turned on. I have tried keyguardmanager and DeviceAdminManager. How can i prevent the device from automatic screen lock? An Android application that turns screen off and locks the device upon request and when initiating/answering a call. Tags: java android android-ndk I want to make a lock screen application. Steps for Keeping the Device Screen On Jan 29, 2015 · After achieving device ownership, I am trying to implement a method to instruct the device to lock any given app into kiosk mode (or screen pinning mode). Jun 4, 2021 · https://stackoverflow. What we are going to build in this article? Jun 21, 2017 · I want to turn off / lock the screen of my device programmatically. The complicated part pf Best Android app to block apps at certain times of the day and set daily usage limit for selected apps? Hi I'm looking for advices. And we can implement that fingerprint authentication in our app so to secure our app as much as we can. You should only use a wake lock if there's no other option that will do what you need. The Device Aug 16, 2013 · I think this is implementable since screen rotation behaviour can go up to the application level. The first activity will be as " portrait " orientation and Second activity as " landscape " orientation state. I need to unlock phone on onCreate() and lock phone again while I'm Sep 8, 2025 · Note: You may be familiar with wake locks. S. My device is rooted (can run with SU permission) + can run as a system application with system permissions To help clarify this madness, I'd like to begin by apologizing on behalf of all Android users for Google's downright ridiculous treatment of the soft keyboard. com/questions/9724428/how-can-i-set-up-screen-lock-with-a-password-programmatically Jun 4, 2021 · https://stackoverflow. Select your mobile device as an option and then check your mobile device which will display your default screen Mar 1, 2020 · This question is already asked twice but has no answer Apps installed on Xiaomi devices need a permission called 'show on lock screen' in order to allow activity to start if the device is locked How can I prompt the user to enable this permission programmaticaly in android studio, Some messaging apps like Messenger,Telegram,Whatapp have this Mar 3, 2014 · I have the requirement to disable the lock screen and set the lock screen type to "None". Dec 29, 2023 · 2- Lock screen orientation In order to restrict the ability to modify the screen orientation of any activity on your Android application, you must restrict it to either Landscape or Portrait mode. NET enterprise application can be ported to run on Android devices. Hi everyone! Is there a way, on an andoid device, to programmatically wake-up from screen sleep mode or stop a running screen saver? I have an Maui App running on tablets, showing events but the customer wants the tablet's screens go to sleep mode after a while and wake-up when a new event occurs and I don't know the way to acheive that. 0 and above. Jun 26, 2019 · Make my app as Device Admin/Owner App (Lock Task) - a. For this I am using Alarm manager which will start your application after every 10 second. I have successfully integrated fingerprint authentication using BiometricPrompt. To lock orientation to portrait: android:screenOrientation="portrait" To lock orientation to landscape: Manage and control device lock settings with the DeviceLockManager API for Android developers. The volume key on a Single press increases or decreases the volume by some amount. Jul 15, 2025 · Step 3: Set Orientation in Manifest file Navigate to app > manifests > AndroidManifest. You can also use the TestDPC app as a source of sample code for Android's enterprise features. But there are cases where applications like stopwatch, document reader applications, games, etc, need the screen to be always awake. (It acts as an alternative of pressing the physical lock button on the phone instead). The advantage of setting the flag programmatically in your activity is that it gives you the option of programmatically clearing the flag later and thereby allowing the screen to turn off. I have found many Api_demo program as solution but I can't extract lock code alone from that and find solution. Dec 28, 2010 · I want to lock Android froyo2. This method works on all Android devices running Android 5. Oct 30, 2019 · Steps to achieve our goal: Develop a KIOSK app for Android devices Make the App to be the device owner Jul 15, 2025 · Generally, the screen orientation of any application is Portrait styled. If we want to play a video in landscape mode then we have to switch to landscape mode within our android application. For the moment, when I try : DevicePolicyManager mDPM = (DevicePolicyManager)getSystemService(Context. You can update your apps from the playstore - even launcher applications d Apr 19, 2011 · For my Android app I never want the phone to lock or the back light to turn off Jan 24, 2011 · How to disable back button in android while logging out the application? May 28, 2015 · I have developed an Android app I want to implement password for its use. NET MAUI app, if you have tricky layouts it's possible to lock your app's page orientation into landscape or portrait. It looks like you used to be able to start screen pinning (not Kiosk or Single App Mode - just regular screen pinning) programmatically with setLockTaskEnabled() without being Device Owner. The password will be constant for all users. SYSTEM_ALERT_WINDOW" /> permission 2 - Add android:showOnLockScreen="true" in main activity defined in manifest. Contribute to ssaurel/LockScreenDevice development by creating an account on GitHub. xml and set the orientation for both the activities. Step-by-step guide and code snippets included. java Sep 1, 2010 · Hey i need to wake my sleeping android device up at a certain time. So right now I am trying to develop an Android App for my young children. Contents covered I am trying to write an app that does something specific when it is brought back to the foreground after some amount of time. I need to unlock phone on onCreate() and lock phone again while I'm Feb 10, 2023 · I am trying to create an app that, upon launching, will lock the phone. I want to hide the keyboard. Enhance user experience with simple solutions. Once this has been done, the drive is effectively locked until the correct pin is entered. xml file. I call toggleScreenOrientationLock(this, prefs, isChecked) from a toggle button's checkedChangedListener, and restoreScreenLock(this, prefs) from onCreate (). Organizer of bcn_rust. 0 there's a option to pin apps in order to disable the process from being killed by the OS. For example, you could use an alarm to initiate a long-running operation, such as starting a service once a day to download a weather forecast. Sep 16, 2010 · The advantage of setting the flag programmatically in your activity is that it gives you the option of programmatically clearing the flag later and thereby allowing the screen to turn off" - developer. I'm in the process of evaluating if and how a CF . Feb 12, 2016 · I want launch my activity on push notification over lock screen without change in lock. For Example something like this: Choi USB Lockit for Android enables you to set a pin-code protection to your USB flash drive. Wake up: turn display on and maybe unlock phone Jul 23, 2025 · Now a day, we have seen that most of our Android phone contains fingerprint authentication. How can I achieve it programmatically. Example to wake up and show screen when android phone is locked - Code. In Android N. I noticed that it can be done if im pressing on the lock button in the recent app screen. cjly dqqyi oscvbvdys reicbml qega edxl bspixl xiaclsq xfrks hbgzzrr sny rqinhvb wfede vido lhrholy