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Editorial Team
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Asked: 2026-05-26T03:39:35+00:00

I was wondering if it was possible to specifically determine if an Android device

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I was wondering if it was possible to specifically determine if an Android device was plugged into a computer or just power.

The main reason is I’d like for my phone to “Stay Awake” when it’s plugged into a computer while I’m developing, but not when it’s plugged into a power outlet a night.

I was thinking that if I could tell what I’m connected to, I could use ACTION_POWER_CONNECTED to start up a service and check what USB I’m connected to.

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  1. Editorial Team

    I actually found the exact way to choose whether to keep the screen on when plugged into AC, USB or either by looking into the source at http://google.com/codesearch#409TP6F96yI/src/com/android/settings/DevelopmentSettings.java&l=95

    Requires permission: android.permission.WRITE_SETTINGS

    Settings.System.putInt(getContentResolver(), Settings.System.STAY_ON_WHILE_PLUGGED_IN,
                mKeepScreenOn.isChecked() ?
                (BatteryManager.BATTERY_PLUGGED_AC | BatteryManager.BATTERY_PLUGGED_USB) : 0);

    For AC: BatteryManager.BATTERY_PLUGGED_AC

    For USB: BatteryManager.BATTERY_PLUGGED_USB

    For Either: (BatteryManager.BATTERY_PLUGGED_AC | BatteryManager.BATTERY_PLUGGED_USB)

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