Android listview 懒加载 [英] Android listview lazy loading

问题描述

我想做点事.我想在 ListView 中进行延迟加载.我的 ListView 包含超过 10,000 个数据 &仅在 TextView 中.所以当我启动列表活动时，我无法在第一时间加载所有数据.它效率不高，所以我可以加载列表中的前 20 或 30 个项目.当我滚动它们时，会进一步加载 ListView 的行.因此，当我到达最后一个索引上 ListView 的最后一个索引时，我会将进度条 n 放在它会注意到新数据已加载的位置，因此届时将使用 last + 1 索引加载新数据.我该怎么做?

I want to do some stuff. I wanna do lazy loading in ListView. My ListView contain more than 10,000 data & only in TextView. so i can't load all that data in first time when i launch list activity. it's not efficient so i can load first 20 or 30 items in list. further the rows of the ListView are loaded when I scroll over them. so when i reach at last index of ListView on last index, i will put progressbar n it will note that the new data are loaded, so at that time new data will be load with last + 1 index. How can i do this?

推荐答案

您可以通过使用无尽的适配器实现来实现这一点.这正是你想要的.您还可以限制每次滚动要刷新的行数.这是它的链接.，

You can achieve this by using endless Adapter implementation. This exactly does what you want. You can also restrict the number of rows to be refreshed per scroll. Here is a link to it.,

Android:实现进度条和加载..."；适用于 Android Market 之类的 Endless List

https://github.com/commonsguy/cwac-endless

要使用它，您需要扩展 EndlessAdapter 以提供有关如何处理无限的详细信息.具体来说，您需要能够提供一个独立于实际适配器中任何行的行视图，当您以另一种方法将实际数据加载到主适配器时，它将用作占位符.然后，在您的帮助下，它会在新数据中无缝转换.

To use it, you extend EndlessAdapter to provide details about how to handle the endlessness. Specifically, you need to be able to provide a row View, independent from any of the rows in your actual adapter, that will serve as a placeholder while you, in another method, load in the actual data to your main adapter. Then, with a little help from you, it seamlessly transitions in the new data.

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