# Demo Mode for the Android System UI *Demo mode for the status bar allows you to force the status bar into a fixed state, useful for taking screenshots with a consistent status bar state, or testing different status icon permutations. Demo mode is available in recent versions of Android.* ## Enabling demo mode Demo mode is protected behind a system setting. To enable it for a device, run: ``` adb shell settings put global sysui_demo_allowed 1 ``` ## Protocol The protocol is based on broadcast intents, and thus can be driven via the command line (```adb shell am broadcast```) or an app (```Context.sendBroadcast```). ### Broadcast action ``` com.android.systemui.demo ``` ### Commands Commands and subcommands (below) are sent as string extras in the broadcast intent. Commands are sent as string extras with key ```command``` (required). Possible values are: | Command | Subcommand | Argument | Description | --- | --- | --- | --- | ```enter``` | | | Enters demo mode, bar state allowed to be modified (for convenience, any of the other non-exit commands will automatically flip demo mode on, no need to call this explicitly in practice) | ```exit``` | | | Exits demo mode, bars back to their system-driven state | ```battery``` | | | Control the battery display | | ```level``` | | Sets the battery level (0 - 100) | | ```plugged``` | | Sets charging state (```true```, ```false```) | | ```powersave``` | | Sets power save mode (```true```, ```anything else```) | ```network``` | | | Control the RSSI display | | ```airplane``` | | ```show``` to show icon, any other value to hide | | ```fully``` | | Sets MCS state to fully connected (```true```, ```false```) | | ```wifi``` | | ```show``` to show icon, any other value to hide | | | ```level``` | Sets wifi level (null or 0-4) | | ```mobile``` | | ```show``` to show icon, any other value to hide | | | ```datatype``` | Values: ```1x```, ```3g```, ```4g```, ```e```, ```g```, ```h```, ```lte```, ```roam```, any other value to hide | | | ```level``` | Sets mobile signal strength level (null or 0-4) | | ```carriernetworkchange``` | | Sets mobile signal icon to carrier network change UX when disconnected (```show``` to show icon, any other value to hide) | | ```sims``` | | Sets the number of sims (1-8) | | ```nosim``` | | ```show``` to show icon, any other value to hide | ```bars``` | | | Control the visual style of the bars (opaque, translucent, etc) | | ```mode``` | | Sets the bars visual style (opaque, translucent, semi-transparent) | ```status``` | | | Control the system status icons | | ```volume``` | | Sets the icon in the volume slot (```silent```, ```vibrate```, any other value to hide) | | ```bluetooth``` | | Sets the icon in the bluetooth slot (```connected```, ```disconnected```, any other value to hide) | | ```location``` | | Sets the icon in the location slot (```show```, any other value to hide) | | ```alarm``` | | Sets the icon in the alarm_clock slot (```show```, any other value to hide) | | ```sync``` | | Sets the icon in the sync_active slot (```show```, any other value to hide) | | ```tty``` | | Sets the icon in the tty slot (```show```, any other value to hide) | | ```eri``` | | Sets the icon in the cdma_eri slot (```show```, any other value to hide) | | ```mute``` | | Sets the icon in the mute slot (```show```, any other value to hide) | | ```speakerphone``` | | Sets the icon in the speakerphone slot (```show```, any other value to hide) | ```notifications``` | | | Control the notification icons | | ```visible``` | | ```false``` to hide the notification icons, any other value to show | ```clock``` | | | Control the clock display | | ```millis``` | | Sets the time in millis | | ```hhmm``` | | Sets the time in hh:mm ## Examples Enter demo mode ``` adb shell am broadcast -a com.android.systemui.demo -e command enter ``` Exit demo mode ``` adb shell am broadcast -a com.android.systemui.demo -e command exit ``` Set the clock to 12:31 ``` adb shell am broadcast -a com.android.systemui.demo -e command clock -e hhmm 1231 ``` Set the wifi level to max ``` adb shell am broadcast -a com.android.systemui.demo -e command network -e wifi show -e level 4 ``` Show the silent volume icon ``` adb shell am broadcast -a com.android.systemui.demo -e command status -e volume silent ``` Empty battery, and not charging (red exclamation point) ``` adb shell am broadcast -a com.android.systemui.demo -e command battery -e level 0 -e plugged false ``` Hide the notification icons ``` adb shell am broadcast -a com.android.systemui.demo -e command notifications -e visible false ``` Exit demo mode ``` adb shell am broadcast -a com.android.systemui.demo -e command exit ``` ## Example demo controller app in AOSP ``` frameworks/base/tests/SystemUIDemoModeController ``` ## Example script (for screenshotting purposes) ```bash #!/bin/sh CMD=$1 if [[ $ADB == "" ]]; then ADB=adb fi if [[ $CMD != "on" && $CMD != "off" ]]; then echo "Usage: $0 [on|off] [hhmm]" >&2 exit fi if [[ "$2" != "" ]]; then HHMM="$2" fi $ADB root || exit $ADB wait-for-devices $ADB shell settings put global sysui_demo_allowed 1 if [ $CMD == "on" ]; then $ADB shell am broadcast -a com.android.systemui.demo -e command enter || exit if [[ "$HHMM" != "" ]]; then $ADB shell am broadcast -a com.android.systemui.demo -e command clock -e hhmm ${HHMM} fi $ADB shell am broadcast -a com.android.systemui.demo -e command battery -e plugged false $ADB shell am broadcast -a com.android.systemui.demo -e command battery -e level 100 $ADB shell am broadcast -a com.android.systemui.demo -e command network -e wifi show -e level 4 $ADB shell am broadcast -a com.android.systemui.demo -e command network -e mobile show -e datatype none -e level 4 $ADB shell am broadcast -a com.android.systemui.demo -e command notifications -e visible false elif [ $CMD == "off" ]; then $ADB shell am broadcast -a com.android.systemui.demo -e command exit fi ```