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I have a recycler view within a fragment in a tablayout, being the main tab. After logging in, it does not load the data, only loads if I change tab and return, or close and open the APP.
Code:
public class ContatosFragment extends Fragment {
ListView ltwContatos = null;
List<Contato> lista = null;
private RecyclerView recyclerContatos;
private ContatosAdapterRecycler mAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_contatos, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState){
recyclerContatos = getView().findViewById(R.id.recyclerContatos);
recyclerContatos = getView().findViewById(R.id.recyclerContatos);
SQLiteHelper db = new SQLiteHelper(getContext());
lista = db.getContacts();
mAdapter = new ContatosAdapterRecycler(getContext(), lista);
recyclerContatos.setAdapter(mAdapter);
recyclerContatos.setLayoutManager(new LinearLayoutManager(getContext()));
// tentei com um timer mas não deu muito certo tambem
new Handler().postDelayed(new Runnable() {
public void run() {
refleshListView();
}
},100);
recyclerContatos.addOnItemTouchListener(
new RecyclerItemClickListener(getContext(), new RecyclerItemClickListener.OnItemClickListener() {
@Override public void onItemClick(View view, int position) {
Intent it = new Intent(getActivity(), ChatActivity.class);
it.putExtra("contact_user", lista.get(position).getContact_user());
it.putExtra("name_contact", lista.get(position).getName_contact());
it.putExtra("photo_contact", lista.get(position).getPhoto_contact());
startActivity(it);
}
})
);
FloatingActionButton fab = (FloatingActionButton) getView().findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(!CheckConection()){
Toast.makeText(getContext(), "Por favor, conecte-se a internet!", Toast.LENGTH_SHORT).show();
}else{
AlertDialog.Builder alert = new AlertDialog.Builder(getContext());
alert.setTitle("Adicionar contato");
alert.setMessage("Digite o e-mail do contato");
final EditText txtEmail = new EditText(getContext());
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT);
txtEmail.setLayoutParams(lp);
txtEmail.setTextColor(Color.parseColor("#000000"));
alert.setView(txtEmail);
alert.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
String URL = "http://192.168.15.10/chat/add_contact.php";
SharedPreferences Preferences = getActivity().getSharedPreferences("userData", Context.MODE_PRIVATE);
final String id_user = String.valueOf(Preferences.getInt("id_usuario", 0));
Ion.with(getContext())
.load("POST",URL)
.setBodyParameter("email_user", txtEmail.getText().toString())
.setBodyParameter("id_user", id_user)
.asJsonObject()
.setCallback(new FutureCallback<JsonObject>() {
@Override
public void onCompleted(Exception e, JsonObject result) {
if(result.get("retorno").getAsString().equals("YES")){
SQLiteHelper db = new SQLiteHelper(getContext());
db.save_contact(Integer.parseInt(id_user), result.get("contact_user").getAsInt(), result.get("nome_user").getAsString(), result.get("photo_user").getAsString());
refleshListView();
Toast.makeText(getContext(), "Contato cadastrado com sucesso!", Toast.LENGTH_SHORT).show();
}else if(result.get("retorno").getAsString().equals("EMAIL_NAO_ENCONTRADO")){
Toast.makeText(getContext(), "Contato não encontrado", Toast.LENGTH_SHORT).show();
txtEmail.setError("Contato não encontrado");
txtEmail.requestFocus();
}else if(result.get("retorno").getAsString().equals("CONTACT_EXIST")){
Toast.makeText(getContext(), "Você já adicionou este contato", Toast.LENGTH_SHORT).show();
}else if(result.get("retorno").getAsString().equals("SEU_EMAIL")){
Toast.makeText(getContext(), "Você não pode se adicionar como contato!", Toast.LENGTH_SHORT).show();
}
};
});
}
});
alert.setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.cancel();
}
});
alert.show();
}
}
});
}
private void refleshListView(){
//SQLiteHelper db = new SQLiteHelper(getContext());
//this.lista = db.getContacts();
//ltwContatos.setAdapter(new ContatosAdapter(getContext(), this.lista));
SQLiteHelper db = new SQLiteHelper(getContext());
lista.clear();
lista.addAll(db.getContacts());
mAdapter.notifyDataSetChanged();
}
@Override
public void onResume(){
super.onResume();
refleshListView();
LocalBroadcastManager.getInstance(getContext()).registerReceiver(mReceiver, new IntentFilter("CONTACT"));
}
@Override
public void onPause(){
super.onPause();
LocalBroadcastManager.getInstance(getContext()).unregisterReceiver(mReceiver);
}
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
refleshListView();
}
};
//checa conexao com internet
public boolean CheckConection() {
Runtime runtime = Runtime.getRuntime();
try {
Process ipProcess = runtime.exec("/system/bin/ping -c 1 8.8.8.8");
int exitValue = ipProcess.waitFor();
return (exitValue == 0);
}
catch (IOException e) { e.printStackTrace(); }
catch (InterruptedException e) { e.printStackTrace(); }
return false;
}
}
What is
SQLiteHelper?– Pablo Almeida
It is a Helper that takes care of the sqlite, receives the data from the webservice and stores on the mobile, in this case it returns the list to the Adapter of the Recycler view
– Julio Antonini