Running Timer, Stopwatch, and Compass example on Glass doesn't seem to work

Question

I ran the timer, stopwatch, and compass example here:

https://developers.google.com/glass/develop/gdk/quick-start#for_android_beginners

However, the applicat

Answer 1

In addition to use voice trigger or touch menu to launch, you can also use adb command to launch the service, this will save some time, because it gets kind of old to manually navigate to launch the app.

adb shell am startservice com.google.android.glass.compass/com.google.android.glass.sample.compass.CompassService 
adb shell am startservice com.google.android.glass.timer/com.google.android.glass.sample.timer.TimerService
adb shell am startservice com.google.android.glass.stopwatch/com.google.android.glass.sample.stopwatch.StopwatchService: 

or

adb shell am startservice 
adb shell am start