我目前正在使用 THIS TECHNIQUE让我的 RecyclerView 无穷无尽;但问题是我想要它正好相反。当用户像聊天信使一样向上滚动时,我想将数据加载到适配器中。
private int previousTotal = 0;
private boolean loading = true;
private int visibleThreshold = 5;
int firstVisibleItem, visibleItemCount, totalItemCount;
mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
visibleItemCount = mRecyclerView.getChildCount();
totalItemCount = mLayoutManager.getItemCount();
firstVisibleItem = mLayoutManager.findFirstVisibleItemPosition();
if (loading) {
if (totalItemCount > previousTotal) {
loading = false;
previousTotal = totalItemCount;
}
}
if (!loading && (totalItemCount - visibleItemCount)
<= (firstVisibleItem + visibleThreshold)) {
// End has been reached
Log.i("Yaeye!", "end called");
// Add to data set
chatMessages.add(0, new Message("Hello World!"));
loading = true;
}
}
});
最佳答案
您可以使用这个很棒的库:https://github.com/stfalcon-studio/ChatKit
请在此处查看分页部分:https://github.com/stfalcon-studio/ChatKit/blob/master/docs/COMPONENT_MESSAGES_LIST.md
关于java - RecyclerView 无限滚动到顶部(聊天应用程序),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51921322/