It's a simple general question how does the power button work I can't imagine it
I only can imagine power switches
but how does any device respond to the power button that turns on your phone while the same long press can open the power menu and not shut it down
Or lock your phone
John98Zakaria said:
It's a simple general question how does the power button work I can't imagine it
I only can imagine power switches
but how does any device respond to the power button that turns on your phone while the same long press can open the power menu and not shut it down
Or lock your phone
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Click to collapse
Physically, pressing the power button closes a circuit. While the button is pressed, electricity flows. When not pressed, there is no circuit. The software/firmware interprets between a short press (screen on/off) and a long press (device power on, power menu, etc) and performs the appropriate action. Same with the volume and other physical buttons for stuff like hard reboots, screenshots, etc.
Planterz said:
Physically, pressing the power button closes a circuit. While the button is pressed, electricity flows. When not pressed, there is no circuit. The software/firmware interprets between a short press (screen on/off) and a long press (device power on, power menu, etc) and performs the appropriate action. Same with the volume and other physical buttons for stuff like hard reboots, screenshots, etc.
Click to expand...
Click to collapse
Thank you
Related
I'm on insert coin. What is supposed to happen when I press the power button? For me, it goes into a "screen capture" mode where pressing home rapid fires screenshots as many times I press Home. I have to press power again to sleep it.
it should turn the screen off when you just press the power button. when you hold it for 3sec then release, it will display the extended power menu (power off, hibernate, restart, etc) and when you hold the power button and press home, it takes screenshots of whats currently on the screen
Mine doesn't do that. It does what I said. How do I fix that?
BUMP - now it is random
Wipe and Reflash and see if that helps?
http://forum.xda-developers.com/showthread.php?t=1230138
I make CyanogenMod 10 for my device. Official firmware - android 4.1.1. I have serious problems with the processing of pressing the power button and volume buttons.
When I press the power button, the phone starts to behave inappropriately. It appears when i try to unlock: not always the first time gets unlocked, you need a short press that the attempt was successful. And if you say I want to call the power menu, long clamp the power button and the phone will vibrate like crazy and there is a bunch of copies of windows power menu, you press back - phone go to the bootanimation ...
By the way with the volume button a similar situation! As is well known in the CyanogenMod is feature - volume buttons scroll through tracks. So if I clamp rocker to scroll through the forward / backward, flipping loops and skipped about 5-6 tracks!
In what could be the problem?
Surely someone had anything like that.
Sorry for my bad english)
hi friends:
i have an old infuse 4g which has the known power button issue so i remapped the volume_up button as power and power button as volume.
the remapping is working fine and i can see that the volume up button works like power and power button works like volume_up.
but sometimes it still power-off my phone when i touch or press power-button. during this time, i dont see an option to poweroff or reboot but the screen becomes black and i see samsung logo, basically its like somebody pulled the plug.
can somebody explain why is this?
many thanks in advance
The power button on my Z3 is practicaully dead. If the phone turns off it takes a good 10 minutes of trying to get the power button to work. Is there a way i can remap it so i can turn it on from completely off using another button? Or is there some trick I can do with a USB cable to force it to boot? Thanks
https://www.youtube.com/watch?v=ynaTZa9dVJk
My power button doesn't have the feedback anymore when pressing down like it does normally. Sometimes I have to press it again to have it actually work.
Has anybody ever replaced the power button? Is there soldering involved?