android横向加载更多,Android RecyclerView实现水平滑动，加载更多

OnLoadMoreListener.java

import android.support.v7.widget.LinearLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.util.Log;

public abstract class OnLoadMoreListener extends RecyclerView.OnScrollListener {

private LinearLayoutManager layoutManager;

private int itemCount, lastPosition, lastItemCount;

public abstract void onLoadMore();

@Override

public void onScrolled(RecyclerView recyclerView, int dx, int dy) {

if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {

layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();

itemCount = layoutManager.getItemCount();

lastPosition = layoutManager.findLastCompletelyVisibleItemPosition();

} else {

Log.e("OnLoadMoreListener", "The OnLoadMoreListener only support LinearLayoutManager");

return;

}

if (lastItemCount != itemCount && lastPosition == itemCount - 1) {

lastItemCount = itemCount;

this.onLoadMore();

}

}

}

xml

android:id="@+id/themeRecyclerView"

android:layout_width="match_parent"

android:layout_height="200dp"

android:layout_gravity="bottom"

android:orientation="horizontal" />

Activity

BookThemeAdapter adapter;

int page = 1;

private void initData() {

getDataOnline();

adapter = new BookThemeAdapter(getContext(), 0, isDownloadDefaultOne);

themeRecyclerView.setAdapter(adapter);

themeRecyclerView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.HORIZONTAL, false));

themeRecyclerView.setOnScrollListener(new OnLoadMoreListener() {

@Override

public void onLoadMore() {

//ToastUtils.showShort("加载更多");

Log.e(TAG, "onLoadMore");

++page;

getDataOnline();

}

});

}

private void getDataOnline() {

HttpRequest2.searchBookTheme(page).subscribe(new Subscriber>() {

@Override

public void onCompleted() {

if (progress_bar != null)

progress_bar.setVisibility(View.GONE);

}

@Override

public void onError(Throwable e) {

}

@Override

public void onNext(ListResult bookThemeListResult) {

adapter.addData(bookThemeListResult.list);

adapter.notifyDataSetChanged();

}

});

}