Question

我有一份简单的清单,由我的ArrayAdapter支持,每秒5秒左右更新一次,有新的数据。每5秒,Im援引通知DataSetChanged在我的ArrayAdapter上,结果名单中重新引用新数据。所有这一切都奏效,每5秒看到新数据。

然而,在我的ArrayAdapter的收听方法中,Im 冲锋相对,包括EditText。在这里,我试图解决问题:

User has selected the EditText in one of the rows and types in some input.
User stays focused on the EditText for more than 5 seconds.
notifyDataSetChanged gets invoked as new data has arrived in my array adapter.
User loses focus on the EditText as it has been redrawn. notifyDataSetChanged seems to result in all ListView elements getting redrawn.

允许用户继续关注EditText但确保数据总是新鲜的最佳途径是什么?

Thanks,

海地

Answer 1

这也许不是最佳途径,而是快捷的方式。超出标准通知了数据交换,如果你有重点的内容(或当它得到重点而不是失去重点时储存),则首先进行核对,储存投入,称为超级。通知数据集改动,写上旧价值。

如果适应者的项目太多,这也许不是一个好的解决方案。