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--- built_in:app_events [2017/09/17 22:32]
5.48.46.31 [Table]
+++ built_in:app_events [2018/12/30 01:47]
114.125.41.56 [App Events]
@@ Line 1: / Line 1: @@
-====== App Events ======
-There are a few functions that are triggered when certain system events occur.
-They are
-^ Function        ^ Called when                                                                 ^
-| OnStart()       | application is created                                                      |
-| OnMenu( name )  | user selects a menu item                                                    |
-| OnBack()        | the back key is pressed but only if it follows app.EnableBackKey( false );  |
-| OnPause()       | application is paused. (eg. When user switches to home screen)              |
-| OnResume()      | application is resumed. (eg. When user returns from home screen)            |
-| OnConfig()      | configuration changes. (eg. When user rotates phone)                        |
-| OnAlarm()       | an alarm previously set by app.SetAlarm() is triggered                      |
-| OnData()        | data sent by Android Intents                                                |
-The code of the sample that is bundled with DroidScript is reproduced below without permission. Hope you don't mind, guys.
 <code javascript appEvents.js>
 //Called when application is created.
@@ Line 89: / Line 75: @@
 }
+</code>
+=====OnConfig=====
+The following code can be useful if you want to change the layout in the OnConfig event.
+<code javascript>
+//Called when application is started.
+function OnStart()
+{
+  //Create a layout with objects vertically centered.
+  lay = app.CreateLayout( "linear", "VCenter,FillXY" );
+  var test = app.GetOrientation();
+  var hv = "Vertical";
+  if( test=="Landscape") hv= "Horizontal";
+  lay.SetOrientation( hv );
+  txt = app.CreateText( "Hello " );
+  txt.SetTextSize( 64);
+  lay.AddChild( txt );
+  txt1 = app.CreateText( "Goodbye" );
+  txt1.SetTextSize( 64 );
+  lay.AddChild( txt1 );
+  app.AddLayout( lay );
+}
+//Called when screen rotates
+function OnConfig()
+{
+  var test = app.GetOrientation();
+  var hv = "Vertical";
+  if( test=="Landscape") hv= "Horizontal";
+  lay.SetOrientation( hv );
+}
 </code>

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