Android back button (app closes when pressed)

kirsan007 · August 28, 2015, 8:10am

In main.lua i added this code

local function onKeyEvent(event) &nbsp; &nbsp; local phase = event.phase &nbsp; &nbsp; local keyName = event.keyName &nbsp; &nbsp; if ("back" == keyName and phase == "down") or ("b" == keyName and phase == "down" and system.getInfo("environment") == "simulator") &nbsp;then &nbsp; &nbsp; print( "go back" ) &nbsp; &nbsp; &nbsp; &nbsp; local currSceneName = composer.getSceneName( "current" ) &nbsp; &nbsp; &nbsp; &nbsp; local currScene = composer.getScene( currSceneName ) &nbsp; &nbsp; &nbsp; &nbsp; composer.gotoScene( currScene.returnTo, { effect = "slideRight", time = 400 } ); &nbsp; &nbsp; end &nbsp; return false end Runtime:addEventListener( "key", onKeyEvent ) &nbsp;&nbsp;

When i press B in simulator - all is ok

When i press Back button on phone (Xiaomi mi2s) app trying to go to prev scene and closes

kirsan007 · August 28, 2015, 9:01am

Resolved this by adding return true in

if ("back" == keyName and phase == "down") or ("b" == keyName and phase == "down" and system.getInfo("environment") == "simulator") &nbsp;then &nbsp; &nbsp; print( "go back" ) &nbsp; &nbsp; local currSceneName = composer.getSceneName( "current" ) &nbsp; &nbsp; local currScene = composer.getScene( currSceneName ) &nbsp; &nbsp; composer.gotoScene( currScene.returnTo, { effect = "slideRight", time = 400 } ); &nbsp; &nbsp;return true -- THIS end

kirsan007 · August 28, 2015, 9:01am

Resolved this by adding return true in

if ("back" == keyName and phase == "down") or ("b" == keyName and phase == "down" and system.getInfo("environment") == "simulator") &nbsp;then &nbsp; &nbsp; print( "go back" ) &nbsp; &nbsp; local currSceneName = composer.getSceneName( "current" ) &nbsp; &nbsp; local currScene = composer.getScene( currSceneName ) &nbsp; &nbsp; composer.gotoScene( currScene.returnTo, { effect = "slideRight", time = 400 } ); &nbsp; &nbsp;return true -- THIS end