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DisableKeys

Hello World

DisableKeys prevents the default behavior of several hard, soft or keyboard keys.

app.DisableKeys( keyList )

This way you can apply a custom action for them using SetOnKey.

You can find the complete list of keycodes on the Android Developer Page

Example - Surprise

var prev;

function OnStart()
{
    app.DisableKeys( "VOLUME_DOWN,VOLUME_UP" );

    lay = app.CreateLayout( "Linear", "FillX" );
    lay.SetPadding( 0, .85 );
    lay.Hide();

    img = app.CreateImage( "/Sys/Img/Hello.png", -1, .3 );
    lay.AddChild( img );

    app.AddLayout( lay );

    app.ShowPopup( "Press the volume keys!" );
    app.SetOnKey( OnKey );
}

function OnKey(action, name, code, extra)
{
    if( action != prev ) {
        if( action == "Down" ) lay.Animate( "SlideFromBottom", null, 300 );
        if( action == "Up" ) lay.Animate( "SlideToBottom" , null, 300 );
    }
    prev = action;
}

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String: comma “,” separated: “VOLUME_DOWN”, “VOLUME_UP”, “FORWARD”, “BACK”, “MENU”, “ENTER”, “...”