我有一个回收站视图,并在其上实现了addOnScrollListener。以下是我的api http://uat.nirc.com.np:8080/GWP/inventory/getInventoryRequestOnMobile?memberId=2&offset=0
在我的api中,每个值最多包含10个项目有一个偏移量。以下是我的主要类,其中实现了addOnScrollListener。
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener()
{
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState)
{
super.onScrollStateChanged(recyclerView, newState);
if(newState == AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL)
{
isScrolling = true;
}
}
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
currentItems = layoutManager.getChildCount();
totalItems = layoutManager.getItemCount();
scrollOutItems = layoutManager.findFirstVisibleItemPosition();
if(isScrolling && (currentItems + scrollOutItems == totalItems ))
{
isScrolling = false;
getData();
}
}
});
以下是getData函数。
public void getData()
{
if(token <= reqCount){
progressBar.setVisibility(View.VISIBLE);
token = token + 9;
datacall(token);
}
}
以下是数据调用函数。
public void datacall(int token){
apiInterface = ApiClient.getApiClient().create(TalikaApiInterface.class);
Call<JinsiAnirodhTalikaModel> call = apiInterface.getData(id,token);
call.enqueue(new Callback<JinsiAnirodhTalikaModel>() {
@Override
public void onResponse(Call<JinsiAnirodhTalikaModel> call, Response<JinsiAnirodhTalikaModel> response) {
requestCount = Integer.parseInt(response.body().requestCount);
for(Data a :response.body().data){
posts.add(a);
}
adapter = new JinsiAnurodhTalikaAdapter(posts,getApplicationContext());
progressBar.setVisibility(View.GONE);
adapter.notifyDataSetChanged();
recyclerView.setAdapter(adapter);
}
@Override
public void onFailure(Call<JinsiAnirodhTalikaModel> call, Throwable t) {
Log.e("error",t.getMessage());
}
});
}
每个令牌中有10个项目。滚动到底部后,将加载新数据,并且令牌增加+9。但是,在获取新数据时,scrollListener的位置将重置为顶部,即在底部获取新数据的同时,recyclerView将重置为顶部。
有人可以帮我吗?我希望scrollListener的位置保持在那个最后的位置。
答案 0 :(得分:2)
第二次获取数据时,请使用adapter.notifydatasetchanged();
而不是设置适配器,而在第二行中,您将再次adapter.notifydatasetchanged();
在recyclerview上设置适配器当您在列表中加载更多项目时,无需在第二次在回收者视图上设置适配器,只是不要在第二秒钟在列表上设置适配器,这应该可以解决问题
答案 1 :(得分:1)
这样做
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
...
// Your other code
...
adapter = new JinsiAnurodhTalikaAdapter(posts,getApplicationContext());
recyclerView.setAdapter(adapter);
}
并在您的dataCall方法中
public void datacall(int token){
apiInterface = ApiClient.getApiClient().create(TalikaApiInterface.class);
Call<JinsiAnirodhTalikaModel> call = apiInterface.getData(id,token);
call.enqueue(new Callback<JinsiAnirodhTalikaModel>() {
@Override
public void onResponse(Call<JinsiAnirodhTalikaModel> call, Response<JinsiAnirodhTalikaModel> response) {
requestCount = Integer.parseInt(response.body().requestCount);
for(Data a :response.body().data){
posts.add(a);
}
progressBar.setVisibility(View.GONE);
adapter.notifyDataSetChanged();
}
@Override
public void onFailure(Call<JinsiAnirodhTalikaModel> call, Throwable t) {
Log.e("error",t.getMessage());
}
});
}