I am using One Plus 3 running OxygenOS 4.0.3.When I long power button on my phone it shutdown. I want to avoid this. I tend to shutdown my phone accidentally many times without realizing it. Especially when its in my pocket
Put your phone in sleep mode after some idle time. Most of the phone will just awake the phone when long power button press.
Go to Settings --> Display --> Sleep --> enable time delay.
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I am trying to put my emulators into sleep mode to test some behavior.
For this, I deactivate the charger, set the battery to "uncharging" and a low battery %. Then I lock the screen over the power button (swipe to unlock is activated).
Then I start some background operation (for example an IntentService) without holding a wake lock and leave the app, but everything just keeps running as if the screen was on.
The emulator seems to not fall into sleep.
Not a duplicate since I am already following these exact steps (as described above)
I'm developing a security program that prevent moving phone without knowing its owner. When program is running when phone moves alarm will fire and show unlock screen to spot the alarm. The alarm can be stop by a password. But the problem is when use press and hold the power button, phone will shutdown. So is there any way to disable power button action?
So is there any way to disable power button action?
There is no way for an ordinary Android application to prevent the power button from functioning, for blindingly obvious security reasons.
It is conceivable that there are ways to accomplish this on rooted devices. Also, if you create your own custom ROM, you can integrate your alarm feature into it, blocking the power button operation while in the alarm state.
There is no way to work around this, because even if it was possible to prevent a shutdown, there would still be the option of simply removing the battery.
When the user presses on the Power button to turn off the screen, at some point Android goes into sleep mode shutting down the CPU. It isn't clear whether this happens immediately or after a period of time. Does the CPU stay fully or partially awake for a duration and then go into a complete sleep mode?
When the user presses the power button, Android goes into screen off mode. Some time after this, the device will go into sleep mode if nothing is kept awake using a Wakelock. The duration of this period is uncertain. See here for more:
https://stackoverflow.com/a/5120225/1369222
I have made an app that starts a service, which starts a timer, which fires off a small function after an amount of time. This is working great on the emulator and on the Motorola Droid 1, but it doesn't work on the Droid X when the phone has been put into sleep mode. What I have discovered is that the timer seems to pause when the phone is in sleep. It doesn't seem to do this on the Droid 1, or the emulator. I'm sure the workaround isn't too difficult, so I'm not asking for help(for once) I just want an explanation, to better understand this.
My question is what exactly does "sleep mode" do on android systems? What does it stop, what doesn't it stop, etc. By sleep mode I mean, of course, when you press the power button and the screen goes black. What exactly is happening? Any insight is appreciated.
I'm sure the workaround isn't too difficult
Using AlarmManager is a bit tricky.
My question is what exactly does "sleep mode" do on android systems?
Primarily, it shuts down the CPU. Along the way, non-essential radios (WiFi, GPS) will have been shut down as well.
What does it stop, what doesn't it stop, etc.
About the only thing you can count on not stopping is the GSM or CDMA radio (for incoming calls, SMSes, and IP packets) and AlarmManager.
By sleep mode I mean, of course, when you press the power button and the screen goes black.
Actually, that's not sleep mode, per se. That is the screen turning off.
The device will go into sleep mode shortly thereafter, if nothing is keeping it awake with a WakeLock. However, there is no guarantee that within a millisecond of you pressing that button and the screen turning off that the CPU is off.
My application requires resource and drains a battery when it is working. So, I want to know the way that user is not available on the phone.
Is there a way to use the built in power save mode on the blackberry to where if the screen dims to suspend the application works active and when the user wakes the device back up with a keypress or trackball movement to resume the application works active?
Thanks in advance.
Is there a way to use the built in
power save mode on the blackberry to
where if the screen dims to suspend
the application works active and when
the user wakes the device back up with
a keypress or trackball movement to
resume the application works active?
This happens automatically, with no code changes required. Unless something is holding a WakeLock, the CPU will turn off sometime after the screen goes dark. The CPU will turn back on when the user presses the power button.