win10 UWP 标题栏后退

设置里，标题栏有后退按钮



在win平板，可以有后退键，手机也有

pc可以在标题栏



在

OnLaunched

//最后
Windows.UI.Core.SystemNavigationManager.GetForCurrentView().BackRequested += BackRequested;       Windows.UI.Core.SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = Windows.UI.Core.AppViewBackButtonVisibility.Visible;

BackRequested后退方法

<script type="text/javascript">
$(function () {
$('pre.prettyprint code').each(function () {
var lines = $(this).text().split('\n').length;
var $numbering = $('<ul/>').addClass('pre-numbering').hide();
$(this).addClass('has-numbering').parent().append($numbering);
for (i = 1; i <= lines; i++) {
$numbering.append($('<li/>').text(i));
};
$numbering.fadeIn(1700);
});
});
</script>