@titanium/turbo/samples/apps/ui/popover/controllers/index.js

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function openPopover() {
	if (Ti.Platform.osname === 'ipad') {
		var popover = Alloy.createController('popover').getView();
		popover.show({view:$.button1});
	} else {
		alert('Popover only supported on iPad');
	}
}

function openPopoverWithContentView() {
	if (Ti.Platform.osname === 'ipad') {
		var popover = Alloy.createController('popover_with_window').getView();
		popover.show({view:$.button2});
	} else {
		alert('Popover only supported on iPad');
	}
}

$.index.open();