Category: Tips

Using droid-at-screen to see your phone’s display on your computer

Using droid-at-screen to see your phone’s display on your computer

droid-at-screen is a free Java-based app that displays the content of your phone’s display to your computer’s display, when the phone is connected via a USB cable. Below is a screen snap shot taken...

Can you “gray out” a button until data entry is complete?

Can you “gray out” a button until data entry is complete?

A reader asked  if it might be possible to “gray out” a button so that pressing it has no action, until appropriate data has been entered? The answer is “Yes, we can do this.”...

Measuring Android Power Consumption

Measuring Android Power Consumption

I did my software engineering Masters thesis (2012) on Android power management and I learned, as part of my research, that most app developers have no idea how much power their app demands from...

Can you make a video player in App Inventor? Not really, unfortunately.

Can you make a video player in App Inventor? Not really, unfortunately.

A question from a reader: Can we make a video player in App Inventor? The short answer is, unfortunately, not really. In the App Inventor Designer, in the Palette’s Media section, you can drag...

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