Android: 'back' button event

Question

Hello!

Is there any way to know when 'back' button on the phone is pressed? I'd like to exit the game when this button is pressed, and not hide it (if hidden, after touching the icon the second time - the game resumes from the previous point and does not restart).

thanks

Answer 1

Best Answer

Answer by RitchParker · Oct 28, 2010 at 04:08 AM

The "escape" key label appears to be mapped to the back button on the android platform in the final release of Unity 3.0. As far as other mappings I've found that the "menu" key label is mapped to the menu key and that that MonoBehaviours will get an "OnApplicationPause" + true call when the home button is pressed and an "OnApplicationPause" + false when the application is brought back as the current process. I've not found a mapping for the search button as of yet.

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Balint · May 10, 2014 at 07:35 PM 0

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Does it work on IOS mobil devices too? THX!

blastoformity7 · Dec 11, 2015 at 07:15 AM 0

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Could you also post the code required to make the game run in the background after the back button is pressed ? thanks.

tanoshimi · Dec 11, 2015 at 07:20 AM 0

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You can't run an application in the background on Android.

blastoformity7 tanoshimi · Dec 11, 2015 at 08:00 AM 0

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thanks for replying, I want my game to resume after its relaunched from the home screen in android, basically imitating the behaviour of the app when the Home button is pressed.

tmendez blastoformity7 · Jun 23, 2017 at 09:00 PM 0

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I believe as of now (Unity 5.5/5.6) you can run apps in the background in Android. At least Hearthstone found a way to do it.

diliupg tanoshimi · Feb 13, 2019 at 11:49 AM 0

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it doesn't run but stays suspended in the background

Chamandana · Jun 13, 2016 at 06:17 AM 0

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Thank you VERY VERY $$anonymous$$uch RitchParker, this helped me a lot in creating my android game which needs to be on the pause screen when the user presses the Back $$anonymous$$ey or $$anonymous$$enu $$anonymous$$ey.

Answer 2

Answer by lbalasubbaiahapps · Sep 30, 2011 at 02:55 PM

write this your scripts (KeyCode.Escape is code for native "Back" button on Android):

if (Input.GetKeyDown(KeyCode.Escape)) { Application.Quit(); }

No Doubt it will work try this one.i tried also.

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liwizy · Jul 20, 2014 at 08:27 AM 1

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but that closes the app, how to set it to go to the previous scene?

tanoshimi · Jul 20, 2014 at 08:46 AM 4

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Please don't add new questions as comments to 3yr old threads. But the answer is simple: replace Application.Quit(); with Application.LoadLevel("YourPreviousLevel");

yewchunyen tanoshimi · Feb 09, 2018 at 03:01 PM 0

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Hi, i am too new to unity. $$anonymous$$ay i know where should i add these lines?

ahmadi9112 · Feb 27, 2015 at 01:36 AM 0

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hi,,balasubbaiahapps !!! it work. your code helpful. tank you very much..!

yewchunyen ahmadi9112 · Feb 09, 2018 at 03:01 PM 0

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Hi, i am too new to unity. $$anonymous$$ay i know where should i add these lines?

Davinder_Singh yewchunyen · May 26, 2019 at 01:25 PM 0

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you should add this code in void Update() method.!

TGKG · Jun 15, 2015 at 06:10 PM 0

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I know this is closed, however It would be nice if when testying with Unity Remote the back button would be recognised.

benjaminstrike TGKG · Oct 31, 2015 at 08:03 AM 0

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$$anonymous$$ake a new thread then

blastoformity7 · Dec 11, 2015 at 07:17 AM 0

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this will make the app quit completely,how to resume the app after its reopened?

diliupg blastoformity7 · Feb 13, 2019 at 11:50 AM 1

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to do that you need to save the current game stats to a list/array and then on loading the game back again check for this file and load from it.

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Android: 'back' button event

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