我正开发一个程序, 在 sencha touch 2. 0. 我需要知道, 我如何保持屏幕之间一个复选框的状态, 以及当我回到屏幕后再回到文本栏屏幕上时, 我如何在文本域域域域域域域域域域域域内保持文本的价值 。
s让我们举一个例子, 我有两个屏幕 A 和 B 。 在屏幕 A 中, 我有一些标签和一个按钮。 在屏幕 B 中, i 有一个复选框和一个文本区域字段, 现在我要在屏幕 B 中检查复选框, 在文本区域字段中键入一些行, 然后通过后端按钮进入屏幕 A 。 当我回到屏幕 B 时, 我要检查该复选框, 并且文本区域字段持有与早些时候我输入的文本相同的文本 。
请建议如何解决这个问题。
这不是最简单但推荐的“强度” 实现您需要的“强度” 的方法, 只是将其内容存储到 < code> Ext. data. Model 实例或 < code> Ext. data. Store 中。
这也许有点像用火箭杀死一只鸡,但它最适合Sencha Touch。你可以使用全球变量,就像纯粹的Javascript那样,但它是一个糟糕的做法。把它们当作普通的Sencha Touch数据实例来对待。
使用存储器存储一个值有点疯狂。 您应该使用浏览器 < code> 本地Storage 对象 :
// get the value of the checkbox and set it in local storage
localStorage.setItem( my-checkbox , checkbox.getValue());
// set the value when the checkbox is visible after reload
checkbox.setValue(localStorage.getItem( my-checkbox ));
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