我在聊天应用程序中使用RecyclerView。我从API获得了聊天列表。
如果我发送任何消息,它不会在RecyclerView中更新。如果我回去参加那个活动,它会在RecyclerView中更新。我使用了adapter.notifyDataSetChanged();
并不工作。
call.enqueue(new Callback<LiveChatGetMsgResponse>() {
@Override
public void onResponse(Call<LiveChatGetMsgResponse> call, Response<LiveChatGetMsgResponse> response) {
if (response.isSuccessful()) {
LiveChatGetMsgResponse resp = response.body();
//Here i get the message list, i send this list to adapter class
msg_list = resp.getData();
myLinear=new LinearLayoutManager(ChatActivity.this);
myLinear.setReverseLayout(true);
recyclerChatList.setLayoutManager(myLinear);
adapter = new LiveChatListAdapter(getApplicationContext(), msg_list);
recyclerChatList.setAdapter(adapter);
//i use this method to scrroll down the RecyclerView
scrollToBottom();
}
}
@Override
public void onFailure(Call<LiveChatGetMsgResponse> call, Throwable t) {
Log.e("LiveChatGetMsgFailure",t.getMessage());
}
});
private void scrollToBottom() {
adapter.notifyDataSetChanged();
if (adapter.getItemCount() < 1)
recyclerChatList.getLayoutManager().smoothScrollToPosition(recyclerChatList, null, adapter.getItemCount() - 1);
}
答案 0 :(得分:1)
您可以在适配器中使用updateData方法,例如
public void updateData(List<YourItem> yourItems){
mData.clear();
mData.addAll(yourItems);
notifyDatasetChanged();
}
避免在每次迭代中创建新的适配器,因为数据已经发生了变化。
还要避免在每次迭代中设置所有内容
// Delete these lines
myLinear=new LinearLayoutManager(ChatActivity.this);
myLinear.setReverseLayout(true);
recyclerChatList.setLayoutManager(myLinear);
adapter = new LiveChatListAdapter(getApplicationContext(), msg_list);
尝试一下,让我们知道它是否解决了问题。
答案 1 :(得分:1)
如果您是发件人,也许您可以添加此功能:
.... adapter{
public void addItem(CustomClass customClass){
yourListOfObject.add(customClass);
notifyItemInserted(yourListOfObject.size()-1);
}
}