Is it possible to add a button to Android lock screen I want to perform some actions on it without unlocking the phone. Is it possible? Android System allows that?
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I'm creating an app and wanted to programmatically lock the device once the user taps a button.
I've searched online about this and the only stuff I found was lock screen orientation or some APIs to create a Lock-screen app.
I just wondering if a simple thing like thisDevice.lock(); or AndroidStuff.powerMgmt.lockScreen();. I mean, seems too basic and essential but I just can't find it
I'm developing a simple phoning application for Android, but I'm having trouble implementing an important functionality.
When I make a call in an Android's default phone app, if I place the phone next to my ear, the screen goes black and it gets temporarily disabled so the user don't accidentally press the virtual buttons.
I already know how to use the proximity sensor, but how can I temporarily disable the screen?
You might want to have a look at these answers
Turn off screen programmatically when face is close the screen on Android
android: turn off screen when close to face
Android: How to turn screen on and off programmatically?
I am developing a security app. So its necessary for me to put it on lock screen. Is there a way to put it on lock screen? so that user can interact directly when needed.
For devices with lockscreens that support app widgets, you can write an app widget that can be placed on the lockscreen.
I am building an app that will be in kiosk mode and must be over the lock screen its is possible using:
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
However, I now need to programmatically lock the screen when the app is starting, looking at this link, I see it needs administrator privileges that are a bit more complicated on the lollipop version, has anyone managed that?
For your need, you can use the Screen Pinning. It's a new functionnality added in Android 5 to limit the application a task.
Programmatically, you can use Activity.startLockTask() and Activity.stopLockTask() to pin/unpin the application.
Some things to know :
If your application is not an Admin app, a popup will appear and you'll have to manually confirm the pinning mode.
No notifications will be shown in this mode.
The Home and Recent Apps buttons will have no effects.
you can unpin the application with no confirmation, and if you have set a Keyguard screen, you'll need to unlock it to go back to your Home application.
Want to set a my app image on Lock screen of device when user is using the app and presses the lock button. And want to change it back to default when he quits the app.
Is This possible to do? Please suggest?
You are welcome to create an app widget that the user can elect to add to their lockscreen on Android 4.2 and higher.