如何在jquery mobile中动态更改主题?

时间:2011-12-28 13:54:13

标签: jquery html5 jquery-mobile themeroller

我正在使用jQuery Mobile创建移动Web应用程序。

我正在为每个页面使用theme-b,我想为每个页面动态更改为另一个主题。如何动态更改主题?

3 个答案:

答案 0 :(得分:21)

您可以定位与特定小部件相关的特定类,重置其类,然后添加您选择的主题类:

    //set your new theme letter
    var theme = 'e';

    //reset all the buttons widgets
    $.mobile.activePage.find('.ui-btn')
                       .removeClass('ui-btn-up-a ui-btn-up-b ui-btn-up-c ui-btn-up-d ui-btn-up-e ui-btn-hover-a ui-btn-hover-b ui-btn-hover-c ui-btn-hover-d ui-btn-hover-e')
                       .addClass('ui-btn-up-' + theme)
                       .attr('data-theme', theme);

    //reset the header/footer widgets
    $.mobile.activePage.find('.ui-header, .ui-footer')
                       .removeClass('ui-bar-a ui-bar-b ui-bar-c ui-bar-d ui-bar-e')
                       .addClass('ui-bar-' + theme)
                       .attr('data-theme', theme);

    //reset the page widget
    $.mobile.activePage.removeClass('ui-body-a ui-body-b ui-body-c ui-body-d ui-body-e')
                       .addClass('ui-body-' + theme)
                       .attr('data-theme', theme);

http://jsfiddle.net/VNXb2/1/

这绝不是一个功能齐全的代码段,当您切换主题并将其添加到上面的代码时,您需要找到要更新的任何其他小部件。您可以使用FireBug或其他开发者控制台轻松找到每个窗口小部件的类。

<强>更新

当您考虑data-role="list-divider元素时,这会变得有点棘手:

var theme = 'c';

//the only difference between this block of code and the same code above is that it doesn't target list-dividers by calling: `.not('.ui-li-divider')`
$.mobile.activePage.find('.ui-btn').not('.ui-li-divider')
                   .removeClass('ui-btn-up-a ui-btn-up-b ui-btn-up-c ui-btn-up-d ui-btn-up-e ui-btn-hover-a ui-btn-hover-b ui-btn-hover-c ui-btn-hover-d ui-btn-hover-e')
                   .addClass('ui-btn-up-' + theme)
                   .attr('data-theme', theme);

//target the list divider elements, then iterate through them to check if they have a theme set, if a theme is set then do nothing, otherwise change its theme to `b` (this is the jQuery Mobile default for list-dividers)
$.mobile.activePage.find('.ui-li-divider').each(function (index, obj) {
    if ($(this).parent().attr('data-divider-theme') == 'undefined') {
        $(this).removeClass('ui-bar-a ui-bar-b ui-bar-c ui-bar-d ui-bar-e')
               .addClass('ui-bar-b')
               .attr('data-theme', 'b');
    }
})

/*The rest of this code example is the same as the above example*/

以下是演示:http://jsfiddle.net/VNXb2/7/

答案 1 :(得分:10)

上面的回答对我有很大的帮助,我根据自己的需要对其进行了一些修改,因为我使用的是themeroller并期望有超过20个主题。这就是我所做的

function updateTheme(newTheme) {
//alert("In refresh");
var rmbtnClasses = '';
var rmhfClasses = '';
var rmbdClassess = '';
var arr = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"  ];

$.each(arr,function(index, value){
    rmbtnClasses = rmbtnClasses + " ui-btn-up-"+value + " ui-btn-hover-"+value;
    rmhfClasses = rmhfClasses + " ui-bar-"+value;
    rmbdClassess = rmbdClassess + " ui-body-"+value;
});

// reset all the buttons widgets
 $.mobile.activePage.find('.ui-btn').not('.ui-li-divider').removeClass(rmbtnClasses).addClass('ui-btn-up-' + newTheme).attr('data-theme', newTheme);

 // reset the header/footer widgets
 $.mobile.activePage.find('.ui-header, .ui-footer').removeClass(rmhfClasses).addClass('ui-bar-' + newTheme).attr('data-theme', newTheme);

 // reset the page widget
 $.mobile.activePage.removeClass(rmbdClassess).addClass('ui-body-' + newTheme).attr('data-theme', newTheme);

 // target the list divider elements, then iterate through them and
 // change its theme (this is the jQuery Mobile default for
 // list-dividers)
 $.mobile.activePage.find('.ui-li-divider').each(function(index, obj) {
 $(this).removeClass(rmhfClasses).addClass('ui-bar-' + newTheme).attr('data-theme',newTheme);

 })

现在,当我通过json从服务器获取新主题时,我只使用新主题作为参数调用此方法。

此致 Rajesh J

答案 2 :(得分:0)

Rajesh的答案对我帮助很大......但Rajesh,你错过了一个重要的课程----&u-page-theme - *&#39;,所以我修改了你的答案,现在它非常适合jQuery Mobile 1.4.5(再次)......

var updateTheme = function(newTheme) {
    var rmbtnClasses = '';
    var rmhfClasses = '';
    var rmbdClassess = '';
    var arr = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's']; // I had themes from a to s

    $.each(arr, function(index, value) {
        rmbtnClasses = rmbtnClasses + ' ui-btn-up-' + value + ' ui-btn-hover-' + value;
        rmhfClasses = rmhfClasses + ' ui-bar-' + value;
        rmbdClassess = rmbdClassess + ' ui-body-' + value + ' ui-page-theme-'+ value;
    });

    // reset all the buttons widgets
    $.mobile.activePage.find('.ui-btn').not('.ui-li-divider').removeClass(rmbtnClasses).addClass('ui-btn-up-' + newTheme).attr('data-theme', newTheme);

    // reset the header/footer widgets
    $.mobile.activePage.find('.ui-header, .ui-footer').removeClass(rmhfClasses).addClass('ui-bar-' + newTheme).attr('data-theme', newTheme);

    // reset the page widget
    $.mobile.activePage.removeClass(rmbdClassess).addClass('ui-body-' + newTheme + ' ui-page-theme-'+ newTheme).attr('data-theme', newTheme);

    // target the list divider elements, then iterate through them and
    // change its theme (this is the jQuery Mobile default for
    // list-dividers)
    $.mobile.activePage.find('.ui-li-divider').each(function(index, obj) {
        $(this).removeClass(rmhfClasses).addClass('ui-bar-' + newTheme).attr('data-theme', newTheme);
    });
};