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Android Build a Simple Android App (2014) Creating the Screen Layout Using a Fullscreen Theme

Gemma Weirs
Gemma Weirs
15,054 Points
Posted by Gemma Weirs
Gemma Weirs
15,054 Points

Emulator not launching on run, and is not showing changes made

I've followed along with the videos, but in this video, Ben clicks on the run icon and that launches his emulator. But when I do the same, it doesn't launch my emulator. So I have to launch it manually, and when it loads, it doesn't show the changes I made. It's only showing the basic Hello World screen.

Any ideas?

4 Answers

Neil Shweky
Neil Shweky
5,022 Points
Neil Shweky
Neil Shweky
5,022 Points

Try cleaning the application and running again. If that doesn't work, try opening the AVD manager (the little phone with the android icon), and maybe create a new emulator.

Gemma Weirs
Gemma Weirs
15,054 Points
Gemma Weirs
Gemma Weirs
15,054 Points

I tried cleaning and running it but that did not work, as I've already said. But I'll try creating a new emulator and see if that works.

3,572 Points
3,572 Points

I'm having the exact same problem... did everything and still just getting the white back ground and "hello world!" in the emulator.

Harry James
Harry James
14,780 Points
Harry James
Harry James
14,780 Points

Hello, are you still having this issue?

It sounds like what's happening is that Android Studio is not pushing the new updated version of the app onto the device.

Make sure your settings look like this and see if the device appears on the Device Selection Screen:

and that there is no errors in the Run or Messages tabs:

Then, let me know if you are still having this issue or not.

Gemma Weirs
Gemma Weirs
15,054 Points
Gemma Weirs
Gemma Weirs
15,054 Points

Thanks, but I abandoned the course a while ago and uninstalled AS from my computer since I wasn't getting anywhere with it at the time. :( Hopefully others with similar issues will find your comment helpful.

Neil Shweky
Neil Shweky
5,022 Points
Neil Shweky
Neil Shweky
5,022 Points

You should probably press the run button on the top bar. This will bring up the emulator manager. Select the emulator you want to use (or launch a new one if required) and then select on the bottom "use same device for future launches". So every time you run, it will use the same emulator (and hopefully update your changes).

Gemma Weirs
Gemma Weirs
15,054 Points
Gemma Weirs
Gemma Weirs
15,054 Points

I did that and it's not doing what you said it would do.

Neil Shweky
Neil Shweky
5,022 Points
Neil Shweky
Neil Shweky
5,022 Points

What is happening?

Gemma Weirs
Gemma Weirs
15,054 Points
Gemma Weirs
Gemma Weirs
15,054 Points

It just runs the app without opening the emulator.

Neil Shweky
Neil Shweky
5,022 Points
Neil Shweky
Neil Shweky
5,022 Points

And it doesn't update?

Gemma Weirs
Gemma Weirs
15,054 Points
Gemma Weirs
Gemma Weirs
15,054 Points

The emulator doesn't update. It's still showing, "Hello World". I've tried cleaning and rebuilding the project which didn't work.