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我有一个回收视图在我的片段,我想更新我的回收站查看广播接收器。我的问题ocuured每次推送消息时接收呼叫,它与先前的项目替换新的项目,但我想创建新行并且以前的项目仍然存在。我搜索了很多,但没有成功。这里是一个具有广播接收器在它更新RecyclerView与呼叫广播接收器
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View drawer = inflater.inflate(R.layout.fragment_notif_list, container, false);
rv = (RecyclerView) drawer.findViewById(R.id.recyclerview);
rv.setHasFixedSize(true);
mLayoutManager = new LinearLayoutManager(getActivity());
rv.setLayoutManager(mLayoutManager);
prefs = getActivity().getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
mRegistrationBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Config.PUSH_NOTIFICATION)) {
// new push notification is received
Toast.makeText(getActivity(), "Push notification is received!", Toast.LENGTH_LONG).show();
message = intent.getStringExtra("message");
title = intent.getStringExtra("title");
timestamp = intent.getStringExtra("timestamp");
Log.d("message -->", message);
Log.d("title -->", title);
Log.d("time -->", timestamp);
MessageObj messageObj = new MessageObj(message,title,timestamp);
getDataSet(messageObj.getMessage(),messageObj.getTitle(),messageObj.getDate());
}
}
};
return drawer;
}
private void getDataSet(String message,String title,String date) {
ArrayList results = new ArrayList<MessageObj>();
MessageObj obj = new MessageObj(message,title,date);
Log.d("result size :",results.size()+"");
results.add(results.size(),obj);
mAdapter = new MessageAdapter(getActivity(), results);
rv.setAdapter(mAdapter);
mAdapter.notifyDataSetChanged();
}
你救了我的生活,谢谢;) – hdiz
请问一个问题。如果我关闭应用程序所有项目删除如何保存它们?我应该使用sharedpreference吗? – hdiz
这是一个糟糕的做法存储数据的偏好,数据检索速度较慢,而不是指数,所以是更好地存储在数据库中的数据,或者如果它只是几行字,然后放入一个文件中。 –