Androizing your mobile app - Moving to composer

cesarkmelo · September 7, 2015, 10:52pm

Hi,

I was reading this very nice article (https://coronalabs.com/blog/2013/03/26/androidizing-your-mobile-app/) and noticed that is wrote for the old ‘storyboard’ but now corona has migrate to ‘composer’. I’m new using corona and I have to ask for the equivalent code for Android Key Processing but using composer.

Could any one please help me? Thanks in advance.

Alex10 · September 8, 2015, 12:47am

You can use the Storyboard to Composer migration guide to update the code from that blog post:

https://docs.coronalabs.com/api/library/composer/migration.html

rob · September 8, 2015, 12:55am

This is a pretty simple version:

local function onKeyEvent( event ) &nbsp;&nbsp; &nbsp;local phase = event.phase &nbsp;&nbsp; &nbsp;local keyName = event.keyName &nbsp;&nbsp; &nbsp;print( event.phase, event.keyName ) &nbsp;&nbsp; &nbsp;if ( "back" == keyName and phase == "up" ) then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;if ( composer.getSceneName( "current" ) == "menu" ) then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;native.requestExit() &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;else &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;if ( composer.isOverlay ) then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;composer.hideOverlay() &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;else &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;composer.gotoScene( "menu", { effect="crossFade", time=500 } ) &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;end &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;end &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;return true &nbsp;&nbsp; &nbsp;end &nbsp;&nbsp; &nbsp;return false end Runtime:addEventListener( "key", onKeyEvent )

cesarkmelo · September 8, 2015, 9:55pm

Great info!! Thanks !!

Alex10 · September 8, 2015, 12:47am

You can use the Storyboard to Composer migration guide to update the code from that blog post:

https://docs.coronalabs.com/api/library/composer/migration.html

rob · September 8, 2015, 12:55am

This is a pretty simple version:

local function onKeyEvent( event ) &nbsp;&nbsp; &nbsp;local phase = event.phase &nbsp;&nbsp; &nbsp;local keyName = event.keyName &nbsp;&nbsp; &nbsp;print( event.phase, event.keyName ) &nbsp;&nbsp; &nbsp;if ( "back" == keyName and phase == "up" ) then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;if ( composer.getSceneName( "current" ) == "menu" ) then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;native.requestExit() &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;else &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;if ( composer.isOverlay ) then &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;composer.hideOverlay() &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;else &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;composer.gotoScene( "menu", { effect="crossFade", time=500 } ) &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;end &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;end &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;return true &nbsp;&nbsp; &nbsp;end &nbsp;&nbsp; &nbsp;return false end Runtime:addEventListener( "key", onKeyEvent )

cesarkmelo · September 8, 2015, 9:55pm

Great info!! Thanks !!