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Struggling with Google firebase Datasnapshot in Android studio

So im doing a project where i have to get Values from specific places from Google Firebase database and put them into textViews in android studio and ive been trying to get 1 value from 1 place to get an idea how everything works before i try to go any further, so here is what ive been trying to do:
Database structure:
{
"Flower" : 100,
"Flowers" : {
"Flower1" : 123,
"Flower2" : 1233,
"Flower3" : 830,
"Flower4" : 95,
"Flower5" : 1,
"Flower6" : 20,
"Flower7" : 330,
"Flower8" : 50
}
}
so with this code im about to show you below my android emulator keeps crashing, but when i change:
String value = dataSnapshot.getValue().toString();
to:
String value = dataSnapshot.getValue(String.class);
It opens up but doesnt show any values from databases in the textview im trying to get them to but also returns a null when i try to show it with line:
Log.d(TAG, "Value is : "value)
Its possible that im only blind to my own code since ive been trying to make this work for a long period of time today but What i have to fix in my code to get value from database into my textView?
Thank you already for possible help.
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import okhttp3.OkHttpClient;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Request;
import okhttp3.Response;
public class MainActivity extends AppCompatActivity {
FirebaseDatabase firebaseDatabase;
DatabaseReference databaseReference;
private static final String TAG = "MainActivity";
TextView textView1, textView2, textView3, textView4, textView5;
TextView textViewDate1, textViewDate2, textViewDate3, textViewDate4, textViewDate5, textViewDatabase;
ArrayList<String> listDate = new ArrayList<String>();
ArrayList<String> listTemp = new ArrayList<String>();
final String url = "";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
databaseReference = FirebaseDatabase.getInstance().getReference().child("Flower");
setTextViewIds();
connectToFmiAndShowResult();
getData();
}
private void getData() {
databaseReference.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
long value = dataSnapshot.getValue(Long.class);
textViewDatabase.setText("" + value);
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
// Getting Post failed, log a message
Toast.makeText(MainActivity.this, "Fail to get data.", Toast.LENGTH_SHORT).show();
}
});
}
private void connectToFmiAndShowResult()
{
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url(url)
.build();
client.newCall(request).enqueue(new Callback()
{
#Override
public void onFailure(Call call, IOException e)
{
e.printStackTrace();
}
#Override
public void onResponse(Call call, Response response) throws IOException {
if (response.isSuccessful())
{
String myResponse = response.body().string();
String [] tokensTemp = myResponse.split("<BsWfs:ParameterValue>");
String [] tokensDate = myResponse.split("<BsWfs:Time>");
for (int i=1; i<tokensDate.length; i++)
{
listDate.add(tokensDate[i].substring(0, Math.min(tokensTemp[i].length(), 10)));
listTemp.add(tokensTemp[i].substring(0, Math.min(tokensTemp[i].length(), 5)).replace("<","").replace("/",""));
}
String d1 = listDate.get(0);
String d2 = listDate.get(1);
String d3 = listDate.get(2);
String d4 = listDate.get(3);
String dLast = listDate.get(listDate.size()-1);
String t1 = listTemp.get(0);
String t2 = listTemp.get(1);
String t3 = listTemp.get(2);
String t4 = listTemp.get(3);
String tLast = listTemp.get(listTemp.size()-1);
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run()
{
textViewDate1.setText(d1 + ":");
textViewDate2.setText(d2 + ":");
textViewDate3.setText(d3 + ":");
textViewDate4.setText(d4 + ":");
textViewDate5.setText(dLast + ":");
textView1.setText(t1 + "°C");
textView2.setText(t2 + "°C");
textView3.setText(t3 + "°C");
textView4.setText(t4 + "°C");
textView5.setText(tLast + "°C");
}
});
}
}
});
}
private void setTextViewIds()
{
textView1 = findViewById(R.id.textViewTemp1);
textView2 = findViewById(R.id.textViewTemp2);
textView3 = findViewById(R.id.textViewTemp3);
textView4 = findViewById(R.id.textViewTemp4);
textView5 = findViewById(R.id.textViewTemp5);
textViewDate1 = findViewById(R.id.textViewDate1);
textViewDate2 = findViewById(R.id.textViewDate2);
textViewDate3 = findViewById(R.id.textViewDate3);
textViewDate4 = findViewById(R.id.textViewDate4);
textViewDate5 = findViewById(R.id.textViewDate5);
textViewDatabase = findViewById(R.id.textViewDatabase);
}
}

To solve this, please change the following line of code:
String value = dataSnapshot.getValue().toString();
To:
long value = dataSnapshot.getValue(Long.class);
And this line:
textViewDatabase.setText(value);
To:
textViewDatabase.setText("" + value);
This is needed because your "Flower" property holds in your database a number and not a String. The result in the logcat will be:
100
Edit:
Seeing your new database schema, to print 100, please use the following lines of code:
DatabaseReference rootRef = FirebaseDatabase.getInstance().getReference();
DatabaseReference flowerRef = rootRef.child("Flower");
flowerRef.get().addOnCompleteListener(new OnCompleteListener<DataSnapshot>() {
#Override
public void onComplete(#NonNull Task<DataSnapshot> task) {
if (task.isSuccessful()) {
long value = task.getResult().getValue(Long.class);
Log.d(TAG, "value: " + value);
} else {
Log.d(TAG, task.getException().getMessage()); //Don't ignore potential errors!
}
}
});
The result in the logcat will be:
value: 100

Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object [duplicate]

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 2 years ago.
package com.example.agriflex.ui.fooddetail;
import android.content.DialogInterface;
import android.icu.util.IslamicCalendar;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RatingBar;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProviders;
import androidx.recyclerview.widget.RecyclerView;
import com.andremion.counterfab.CounterFab;
import com.bumptech.glide.Glide;
import com.cepheuen.elegantnumberbutton.view.ElegantNumberButton;
import com.example.agriflex.Common.Common;
import com.example.agriflex.Model.CommentModel;
import com.example.agriflex.Model.FoodModel;
import com.example.agriflex.Model.SizeModel;
import com.example.agriflex.R;
import com.example.agriflex.ui.comments.CommentFragment;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ServerValue;
import com.google.firebase.database.ValueEventListener;
import java.util.HashMap;
import java.util.Map;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;
import butterknife.Unbinder;
import dmax.dialog.SpotsDialog;
public class FoodDetailFragment extends Fragment {
private FoodDetailViewModel foodDetailViewModel;
private Unbinder unbinder;
private android.app.AlertDialog waitingDialog;
#BindView(R.id.img_food)
ImageView img_food;
#BindView(R.id.btnCart)
CounterFab btnCart;
#BindView(R.id.btn_rating)
FloatingActionButton btn_rating;
#BindView(R.id.food_name)
TextView food_name;
#BindView(R.id.food_description)
TextView food_description;
#BindView(R.id.food_price)
TextView food_price;
#BindView(R.id.number_button)
ElegantNumberButton numberButton;
#BindView(R.id.ratingBar)
RatingBar ratingBar;
#BindView(R.id.btnShowComment)
Button btnShowComment;
#BindView(R.id.rdi_group_size)
RadioGroup rdi_group_size;
#OnClick(R.id.btn_rating)
void onRatingButtonClick() {
showDialogRating();
}
#OnClick(R.id.btnShowComment)
void onShowCommentButtonClick() {
CommentFragment commentFragment = CommentFragment.getInstance();
commentFragment.show(getActivity().getSupportFragmentManager(), "CommentFragment");
}
private void showDialogRating() {
androidx.appcompat.app.AlertDialog.Builder builder = new androidx.appcompat.app.AlertDialog.Builder(getContext());
builder.setTitle("Rating Food");
builder.setMessage("Please fill Information");
View itemView = LayoutInflater.from(getContext()).inflate(R.layout.layout_rating, null);
RatingBar ratingBar = (RatingBar) itemView.findViewById(R.id.rating_bar);
EditText edt_comment = (EditText) itemView.findViewById(R.id.edt_comment);
builder.setView(itemView);
builder.setNegativeButton("CANCEL", (dialogInterface, i) -> {
dialogInterface.dismiss();
});
builder.setPositiveButton("OK", (dialogInterface, i) -> {
CommentModel commentModel = new CommentModel();
commentModel.setName(Common.currentUser.getName());
commentModel.setUid(Common.currentUser.getUid());
commentModel.setComment(edt_comment.getText().toString());
commentModel.setRatingValue(ratingBar.getRating());
Map<String, Object> serverTimeStamp = new HashMap<>();
serverTimeStamp.put("timeStamp", ServerValue.TIMESTAMP);
commentModel.setCommentTimeStamp(serverTimeStamp);
foodDetailViewModel.setCommentModel(commentModel);
});
AlertDialog dialog = builder.create();
dialog.show();
}
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
foodDetailViewModel =
ViewModelProviders.of(this).get(FoodDetailViewModel.class);
View root = inflater.inflate(R.layout.fragment_food_detail, container, false);
unbinder = ButterKnife.bind(this, root);
initViews();
foodDetailViewModel.getMutableLiveDataFood().observe(this, foodModel -> {
displayInfo(foodModel);
});
foodDetailViewModel.getMutableLiveDataComment().observe(this, commentModel -> {
submitRatingToFirebase(commentModel);
});
return root;
}
private void initViews() {
waitingDialog = new SpotsDialog.Builder().setCancelable(false).setContext(getContext()).build();
}
private void submitRatingToFirebase(CommentModel commentModel) {
waitingDialog.show();
//First , we will submit to Comments ref
FirebaseDatabase.getInstance()
.getReference(Common.COMMENT_REF)
.child(Common.selectedFood.getId())
.push()
.setValue(commentModel)
.addOnCompleteListener(task -> {
if (task.isSuccessful()) {
//After submit to CommentRef , we will update value aveger in food
addRatingToFood(commentModel.getRatingValue());
}
waitingDialog.dismiss();
});
}
private void addRatingToFood(float ratingValue) {
FirebaseDatabase.getInstance()
.getReference(Common.CATEGORY_REF)
.child(Common.CategorySelected.getMenu_id()) // Select Category
.child("foods") // select array list 'foods' of this category
.child(Common.selectedFood.getKey()) // Because food item is array list so key is index of arraylist
.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
if (dataSnapshot.exists()) {
FoodModel foodModel = dataSnapshot.getValue(FoodModel.class);
foodModel.setKey(Common.selectedFood.getKey()); //Don't forget set it
//Apply rating
if (foodModel.getRatingValue() == null)
foodModel.setRatingValue(0d); // d = D lower case
if (foodModel.getRatingCount() == null)
foodModel.setRatingCount(0l); // l = L lower case, not 1 (number 1)
double sumRating = foodModel.getRatingValue() + ratingValue;
long ratingCount = foodModel.getRatingCount() + 1;
double result = sumRating / ratingCount;
Map<String, Object> updateData = new HashMap<>();
updateData.put("ratingValue", result);
updateData.put("ratingCount", ratingCount);
//update data in variable
foodModel.setRatingValue(result);
foodModel.setRatingCount(ratingCount);
dataSnapshot.getRef()
.updateChildren(updateData)
.addOnCompleteListener(task -> {
waitingDialog.dismiss();
if (task.isSuccessful()) {
Toast.makeText(getContext(), "Thank you !", Toast.LENGTH_SHORT).show();
Common.selectedFood = foodModel;
foodDetailViewModel.setFoodModel(foodModel); // Call refresh
}
});
} else
waitingDialog.dismiss();
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
waitingDialog.dismiss();
Toast.makeText(getContext(), "" + databaseError.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}
private void displayInfo(FoodModel foodModel) {
Glide.with(getContext()).load(foodModel.getImage()).into(img_food);
food_name.setText(new StringBuilder(foodModel.getName()));
food_description.setText(new StringBuilder(foodModel.getDescription()));
food_price.setText(new StringBuilder(foodModel.getPrice().toString()));
if (foodModel.getRatingValue() != null)
ratingBar.setRating(foodModel.getRatingValue().floatValue());
((AppCompatActivity)getActivity())
.getSupportActionBar()
.setTitle(Common.selectedFood.getName());
//Size
for (SizeModel sizeModel: Common.selectedFood.getSizeModel())
{
RadioButton radioButton = new RadioButton(getContext());
radioButton.setOnCheckedChangeListener((buttonView, isChecked) -> {
if (isChecked)
Common.selectedFood.setUserSelectedSize(sizeModel);
calculateTotalPrice(); //Update Price
});
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0,
LinearLayout.LayoutParams.MATCH_PARENT,
1.0f);
radioButton.setLayoutParams(params);
radioButton.setText(sizeModel.getName());
radioButton.setTag(sizeModel.getPrice());
rdi_group_size.addView(radioButton);
}
if (rdi_group_size.getChildCount() > 0) {
RadioButton radioButton = (RadioButton) rdi_group_size.getChildAt(0);
radioButton.setChecked(true); //Default First Select
}
calculateTotalPrice();
}
private void calculateTotalPrice () {
double totalPrice = Double.parseDouble(Common.selectedFood.getPrice().toString()), displayPrice = 0.0;
//Size
totalPrice += Double.parseDouble(Common.selectedFood.getUserSelectedSize().getPrice().toString());
displayPrice = totalPrice * (Integer.parseInt(numberButton.getNumber()));
displayPrice = Math.round(displayPrice * 100.0 / 100.0);
food_price.setText(new StringBuilder("").append(Common.formatPrice(displayPrice)).toString());
}
}
----------
## Heading ##
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.agriflex, PID: 5673
java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object reference
at com.example.agriflex.ui.fooddetail.FoodDetailFragment.displayInfo(FoodDetailFragment.java:236)
at com.example.agriflex.ui.fooddetail.FoodDetailFragment.lambda$onCreateView$2$FoodDetailFragment(FoodDetailFragment.java:135)
at com.example.agriflex.ui.fooddetail.-$$Lambda$FoodDetailFragment$qUbisKr6hIzCwm4MXSIKgBZ3EXA.onChanged(Unknown Source:4)
at androidx.lifecycle.LiveData.considerNotify(LiveData.java:113)
at androidx.lifecycle.LiveData.dispatchingValue(LiveData.java:126)
at androidx.lifecycle.LiveData$ObserverWrapper.activeStateChanged(LiveData.java:424)
at androidx.lifecycle.LiveData$LifecycleBoundObserver.onStateChanged(LiveData.java:376)
at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:361)
at androidx.lifecycle.LifecycleRegistry.forwardPass(LifecycleRegistry.java:300)
at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:339)
at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:145)
at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:131)
at androidx.fragment.app.Fragment.performStart(Fragment.java:2637)
at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:915)
at androidx.fragment.app.FragmentManagerImpl.addAddedFragments(FragmentManagerImpl.java:2100)
at androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(FragmentManagerImpl.java:1874)
at androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManagerImpl.java:1830)
at androidx.fragment.app.FragmentManagerImpl.execPendingActions(FragmentManagerImpl.java:1727)
at androidx.fragment.app.FragmentManagerImpl$2.run(FragmentManagerImpl.java:150)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
I/zygote: Do full code cache collection, code=495KB, data=334KB
After code cache collection, code=484KB, data=293KB

Replace your displayInfo method with
private void displayInfo(FoodModel foodModel) {
Glide.with(getContext()).load(foodModel.getImage()).into(img_food);
food_name.setText(new StringBuilder(foodModel.getName()));
food_description.setText(new StringBuilder(foodModel.getDescription()));
food_price.setText(new StringBuilder(foodModel.getPrice().toString()));
if (foodModel.getRatingValue() != null)
ratingBar.setRating(foodModel.getRatingValue().floatValue());
((AppCompatActivity)getActivity())
.getSupportActionBar()
.setTitle(Common.selectedFood.getName());
//Size
//Add NULL check for your object and your code wont throw the exception
if(null!=Common.selectedFood && null!=Common.selectedFood.getSizeModel()) {
for (SizeModel sizeModel : Common.selectedFood.getSizeModel()) {
RadioButton radioButton = new RadioButton(getContext());
radioButton.setOnCheckedChangeListener((buttonView, isChecked) -> {
if (isChecked)
Common.selectedFood.setUserSelectedSize(sizeModel);
calculateTotalPrice(); //Update Price
});
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0,
LinearLayout.LayoutParams.MATCH_PARENT,
1.0f);
radioButton.setLayoutParams(params);
radioButton.setText(sizeModel.getName());
radioButton.setTag(sizeModel.getPrice());
rdi_group_size.addView(radioButton);
}
}
if (rdi_group_size.getChildCount() > 0) {
RadioButton radioButton = (RadioButton) rdi_group_size.getChildAt(0);
radioButton.setChecked(true); //Default First Select
}
calculateTotalPrice();
}
I have just added null checks before the list iteration.

It seems that your "foodModel" is null:
foodDetailViewModel.getMutableLiveDataFood().observe(this, foodModel -> {
displayInfo(foodModel);
});
Before displaying info you need to check if is not null :
foodDetailViewModel.getMutableLiveDataFood().observe(this, foodModel -> {
if( foodModel != null )
displayInfo(foodModel);
});
Otherwhise you need to check your "getMutableLiveDataFood()" method returns null data

Please help i got error on a null object reference. when i click confirm button [closed]

Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 3 years ago.
Improve this question
My logcat here
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.barberbooking, PID: 13610
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.example.barberbooking.Model.Salon.getSalonId()'
on a null object reference
at com.example.barberbooking.Fragments.BookingStep4Fragment.lambda$null$0$BookingStep4Fragment(BookingStep4Fragment.java:260)
at com.example.barberbooking.Fragments.-$$Lambda$BookingStep4Fragment$4Ef790x-NNkmXHs_bv2YFCA2Nyk.onSuccess(Unknown
Source:4)
at com.google.android.gms.tasks.zzn.run(Unknown Source:4)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
My Bookingstep4fragment
package com.example.barberbooking.Fragments;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.CalendarContract;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import com.example.barberbooking.Common.Common;
import com.example.barberbooking.Database.CartDataSource;
import com.example.barberbooking.Database.CartDatabase;
import com.example.barberbooking.Database.CartItem;
import com.example.barberbooking.Database.LocalCartDataSource;
import com.example.barberbooking.Model.BookingInformation;
import com.example.barberbooking.Model.EventBus.ConfirmBookingEvent;
import com.example.barberbooking.Model.FCMResponse;
import com.example.barberbooking.Model.FCMsendData;
import com.example.barberbooking.Model.MyNotification;
import com.example.barberbooking.Model.MyToken;
import com.example.barberbooking.R;
import com.example.barberbooking.Retrofit.IFCMApi;
import com.example.barberbooking.Retrofit.RetrofitClient;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.Timestamp;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.FieldValue;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.QuerySnapshot;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TimeZone;
import java.util.UUID;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;
import butterknife.Unbinder;
import dmax.dialog.SpotsDialog;
import io.paperdb.Paper;
import io.reactivex.SingleObserver;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.CompositeDisposable;
import io.reactivex.disposables.Disposable;
import io.reactivex.functions.Consumer;
import io.reactivex.schedulers.Schedulers;
#SuppressWarnings("ALL")
public class BookingStep4Fragment extends Fragment {
CartDataSource cartDataSource;
CompositeDisposable compositeDisposable = new CompositeDisposable();
SimpleDateFormat simpleDateFormat;
Unbinder unbinder;
IFCMApi ifcmApi;
AlertDialog dialog;
#BindView(R.id.txt_booking_barber_text)
TextView txt_booking_barber_text;
#BindView(R.id.txt_booking_time_text)
TextView txt_booking_time_text;
#BindView(R.id.txt_salon_address)
TextView txt_salon_address;
#BindView(R.id.txt_salon_open_hours)
TextView txt_salon_open_hours;
#BindView(R.id.txt_salon_phone)
TextView txt_salon_phone;
#BindView(R.id.txt_salon_website)
TextView txt_salon_website;
#BindView(R.id.txt_salon_name)
TextView txt_salon_name;
#OnClick(R.id.btn_confirm)
void confirmBooking() {
dialog.show();
//DatabaseUtils.getAllCart(CartDatabase.getInstance(getContext()),
//this);
compositeDisposable.add(cartDataSource.getAllItemFromCart(Common.currentUser.getPhoneNumber())
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<List<CartItem>>() {
#Override
public void accept(List<CartItem> cartItems) throws Exception {
String startTime = Common.convertTimeSlotToString(Common.currentTimeSlot);
String[] convertTime = startTime.split("-");
String[] startTimeConvert = convertTime[0].split(":");
int startHourInt = Integer.parseInt(startTimeConvert[0].trim());
int startMinInt = Integer.parseInt(startTimeConvert[1].trim()); // We get 00
Calendar bookingDateWithourHouse = Calendar.getInstance();
bookingDateWithourHouse.setTimeInMillis(Common.currentDate.getTimeInMillis());
bookingDateWithourHouse.set(Calendar.HOUR_OF_DAY, startHourInt);
bookingDateWithourHouse.set(Calendar.MINUTE, startMinInt);
//Create timestamp object and apply to BookingInformation
Timestamp timestamp = new Timestamp(bookingDateWithourHouse.getTime());
final BookingInformation bookingInformation = new BookingInformation();
bookingInformation.setCityBook(Common.city);
bookingInformation.setTimestamp(timestamp);
bookingInformation.setDone(false);
bookingInformation.setBarberId(Common.currentBarber.getBarberId());
bookingInformation.setBarberName(Common.currentBarber.getName());
bookingInformation.setCustomerName(Common.currentUser.getName());
bookingInformation.setCustomerPhone(Common.currentUser.getPhoneNumber());
bookingInformation.setSalonId(Common.currentSalon.getSalonId());
bookingInformation.setSalonAddress(Common.currentSalon.getAddress());
bookingInformation.setSalonName(Common.currentSalon.getName());
bookingInformation.setTime(new StringBuilder(Common.convertTimeSlotToString(Common.currentTimeSlot))
.append(" at ")
.append(simpleDateFormat.format(bookingDateWithourHouse.getTime())).toString());
bookingInformation.setSlot(Long.valueOf(Common.currentTimeSlot));
bookingInformation.setCartItemList(cartItems);
DocumentReference bookingDate = FirebaseFirestore.getInstance()
.collection("AllSalon")
.document(Common.city)
.collection("Branch")
.document(Common.currentSalon.getSalonId())
.collection("Barber")
.document(Common.currentBarber.getBarberId())
.collection(Common.simpleDateFormat.format(Common.currentDate.getTime()))
.document(String.valueOf(Common.currentTimeSlot));
bookingDate.set(bookingInformation)
.addOnSuccessListener((aVoid) -> {
resetStaticData();
getActivity().finish(); activity
Toast.makeText(getContext(), "Success", Toast.LENGTH_SHORT).show();
//DatabaseUtils.clearCart(CartDatabase.getInstance(getContext()));
cartDataSource.clearCart(Common.currentUser.getPhoneNumber())
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new SingleObserver<Integer>() {
#Override
public void onSubscribe(Disposable d) {
}
#Override
public void onSuccess(Integer integer) {
addToUserBooking(bookingInformation);
}
#Override
public void onError(Throwable e) {
Toast.makeText(getContext(), "" + e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
}).addOnFailureListener(e -> {
Toast.makeText(getContext(), "" + e.getMessage(), Toast.LENGTH_SHORT).show();
});
}
}, new Consumer<Throwable>() {
#Override
public void accept(Throwable throwable) throws Exception {
Toast.makeText(getContext(), "" + throwable.getMessage(), Toast.LENGTH_SHORT).show();
}
}));
}
private void addToUserBooking(BookingInformation bookingInformation) {
final CollectionReference userBooking = FirebaseFirestore.getInstance()
.collection("User")
.document(Common.currentUser.getPhoneNumber())
.collection("Booking");
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DATE, 0);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
Timestamp toDayTimeStamp = new Timestamp(calendar.getTime());
userBooking
.whereGreaterThanOrEqualTo("timestamp", toDayTimeStamp)
.whereEqualTo("done", false)
.limit(1)
.get()
.addOnCompleteListener(task -> {
if (task.getResult().isEmpty()) {
userBooking.document()
.set(bookingInformation)
.addOnSuccessListener(aVoid -> {
MyNotification myNotification = new MyNotification();
myNotification.setUid(UUID.randomUUID().toString());
myNotification.setTitle("New Booking");
myNotification.setContent("You have a new appoiment for customer hair care with " + Common.currentUser.getName());
myNotification.setRead(false); // We will only filter notification with 'read' is false on barber staff app
myNotification.setServerTimestamp(FieldValue.serverTimestamp());
FirebaseFirestore.getInstance()
.collection("AllSalon")
.document(Common.city)
.collection("Branch")
.document(Common.currentSalon.getSalonId())
.collection("Barber")
.document(Common.currentBarber.getBarberId())
.collection("Notifications")
.document(myNotification.getUid())
.set(myNotification)
.addOnSuccessListener(new OnSuccessListener<Void>() {
#Override
public void onSuccess(Void aVoid) {
dialog.dismiss();
//First , get Token base on Barber id
FirebaseFirestore.getInstance()
.collection("Tokens")
.whereEqualTo("userPhone", Common.currentBarber.getUsername())
.limit(1)
.get()
.addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
#Override
public void onComplete(#NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful() && task.getResult().size() > 0) {
MyToken myToken = new MyToken();
for (DocumentSnapshot tokenSnapShot : task.getResult())
myToken = tokenSnapShot.toObject(MyToken.class);
FCMsendData sendRequest = new FCMsendData();
Map<String, String> dataSend = new HashMap<>();
dataSend.put(Common.TITLE_KEY, "New Booking");
dataSend.put(Common.CONTENT_KEY, "You have new booking from user "+ Common.currentUser.getName());
sendRequest.setTo(myToken.getToken());
sendRequest.setData(dataSend);
compositeDisposable.add(ifcmApi.sendNotification(sendRequest)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<FCMResponse>() {
#Override
public void accept(FCMResponse fcmResponse) throws Exception {
dialog.dismiss();
addToCalendar(Common.currentDate,
Common.convertTimeSlotToString(Common.currentTimeSlot));
resetStaticData();
getActivity().finish(); //Close Activity
Toast.makeText(getContext(), "Success", Toast.LENGTH_SHORT).show();
}
}, new Consumer<Throwable>() {
#Override
public void accept(Throwable throwable) throws Exception {
Log.d("NOTIFICATION_ERROR", throwable.getMessage());
addToCalendar(Common.currentDate,
Common.convertTimeSlotToString(Common.currentTimeSlot));
resetStaticData();
getActivity().finish(); //Close Activity
Toast.makeText(getContext(), "Success", Toast.LENGTH_SHORT).show();
}
}));
}
}
});
}
});
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception e) {
if (dialog.isShowing())
dialog.dismiss();
Toast.makeText(getContext(), e.getMessage(), Toast.LENGTH_SHORT).show();
}
});
} else {
if (dialog.isShowing())
dialog.dismiss();
resetStaticData();
getActivity().finish(); // Close activity
Toast.makeText(getContext(), "Success", Toast.LENGTH_SHORT).show();
}
});
}
private void addToCalendar(Calendar bookingDate, String startDate) {
String startTime = Common.convertTimeSlotToString(Common.currentTimeSlot);
String[] convertTime = startTime.split("-"); //Split ex : 9:00-10:00
//Get start time : get 9:00
String[] startTimeConvert = convertTime[0].split(":");
int startHourInt = Integer.parseInt(startTimeConvert[0].trim()); int startMinInt = Integer.parseInt(startTimeConvert[1].trim());
String[] endTimeConvert = convertTime[1].split(":");
int endHourInt = Integer.parseInt(endTimeConvert[0].trim());
int endMinInt = Integer.parseInt(endTimeConvert[1].trim());
Calendar startEvent = Calendar.getInstance();
startEvent.setTimeInMillis(bookingDate.getTimeInMillis());
startEvent.set(Calendar.HOUR_OF_DAY, startHourInt);
startEvent.set(Calendar.MINUTE, startMinInt);
Calendar endEvent = Calendar.getInstance();
endEvent.setTimeInMillis(bookingDate.getTimeInMillis());
endEvent.set(Calendar.HOUR_OF_DAY, endHourInt); hour
endEvent.set(Calendar.MINUTE, endMinInt);
SimpleDateFormat calendarDateFormat = new SimpleDateFormat("dd-MM-yyyy HH:mm");
String startEventTime = calendarDateFormat.format(startEvent.getTime());
String endEventTime = calendarDateFormat.format(endEvent.getTime());
addToDeviceCalendar(startEventTime, endEventTime, "Haircut Booking",
new StringBuilder("Haircut from ")
.append(startTime)
.append(" with ")
.append(Common.currentBarber.getName())
.append(" at ")
.append(Common.currentSalon.getName()).toString(),
new StringBuilder("Address: ").append(Common.currentSalon.getAddress()).toString());
}
private void addToDeviceCalendar(String startEventTime, String endEventTime, String title, String description, String location) {
SimpleDateFormat calendarDateFormat = new SimpleDateFormat("dd-MM-yyyy HH:mm");
try {
Date start = calendarDateFormat.parse(startEventTime);
Date end = calendarDateFormat.parse(endEventTime);
ContentValues event = new ContentValues();
event.put(CalendarContract.Events.CALENDAR_ID, getCalendar(getContext()));
event.put(CalendarContract.Events.TITLE, title);
event.put(CalendarContract.Events.DESCRIPTION, description);
event.put(CalendarContract.Events.EVENT_LOCATION, location);
event.put(CalendarContract.Events.DTSTART, start.getTime());
event.put(CalendarContract.Events.DTEND, end.getTime());
event.put(CalendarContract.Events.ALL_DAY, 0);
event.put(CalendarContract.Events.HAS_ALARM, 1);
String timeZone = TimeZone.getDefault().getID();
event.put(CalendarContract.Events.EVENT_TIMEZONE, timeZone);
Uri calendars;
if (Build.VERSION.SDK_INT >= 22)
calendars = Uri.parse("content://com.android.calendar/events");
else
calendars = Uri.parse("content://calendar/events");
Uri uri_save = getActivity().getContentResolver().insert(calendars, event);
Paper.init(getActivity());
Paper.book().write(Common.EVENT_URI_CACHE, uri_save.toString());
} catch (ParseException e) {
e.printStackTrace();
}
}
private String getCalendar(Context context) {
String gmailIdCalendar = "";
String projection[] = {"_id", "calendar_displayName"};
Uri calendars = Uri.parse("content://com.android.calendar/calendars");
ContentResolver contentResolver = context.getContentResolver();
Cursor managedCursor = contentResolver.query(calendars, projection, null, null, null);
if (managedCursor.moveToFirst()) {
String calName;
int nameCol = managedCursor.getColumnIndex(projection[1]);
int idCol = managedCursor.getColumnIndex(projection[0]);
do {
calName = managedCursor.getString(nameCol);
if (calName.contains("#gmail.com")) {
gmailIdCalendar = managedCursor.getString(idCol);
break; // Exit as soon as have io
}
} while (managedCursor.moveToNext());
managedCursor.close();
}
return gmailIdCalendar;
}
private void resetStaticData() {
Common.step = 0;
Common.currentTimeSlot = -1;
Common.currentSalon = null;
Common.currentBarber = null;
Common.currentDate.add(Calendar.DATE, 0);//Current date
}
#Override
public void onStart() {
super.onStart();
EventBus.getDefault().register(this);
}
#Override
public void onStop() {
EventBus.getDefault().unregister(this);
super.onStop();
}
#Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
public void setDataBooking(ConfirmBookingEvent event) {
if (event.isConfirm()) {
setData();
}
}
private void setData() {
txt_booking_barber_text.setText(Common.currentBarber.getName());
txt_booking_time_text.setText(new StringBuilder(Common.convertTimeSlotToString(Common.currentTimeSlot))
.append(" at ")
.append(simpleDateFormat.format(Common.currentDate.getTime())));
txt_salon_address.setText(Common.currentSalon.getAddress());
txt_salon_website.setText(Common.currentSalon.getWebsite());
txt_salon_name.setText(Common.currentSalon.getName());
txt_salon_open_hours.setText(Common.currentSalon.getOpenHours());
}
static BookingStep4Fragment instance;
public static BookingStep4Fragment getInstance() {
if(instance == null) ;
instance = new BookingStep4Fragment();
return instance;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ifcmApi = RetrofitClient.getInstance().create(IFCMApi.class);
//Apply format for date display on Confirm
simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy");
dialog = new SpotsDialog.Builder().setContext(getContext()).setCancelable(false)
.build();
}
#Override
public void onDestroy() {
compositeDisposable.clear();
super.onDestroy();
{ if (dialog != null) { dialog.dismiss(); dialog = null; }}
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View itemView = inflater.inflate(R.layout.fragment_bookingstep_four, container, false);
unbinder = ButterKnife.bind(this, itemView);
cartDataSource = new LocalCartDataSource(CartDatabase.getInstance(getContext()).cartDAO());
return itemView;
}
}

Check those lines
bookingInformation.setSalonId(Common.currentSalon.getSalonId());
.document(Common.currentSalon.getSalonId())
The error is clear
Attempt to invoke virtual method 'java.lang.String com.example.barberbooking.Model.Salon.getSalonId()' on a null object
You are sending salonId null

loading more than one entry wtih search results from arrylist

I have these codes which work perfectly to search the data form my array list,but , its shows only one result of all the results that we got, I want the text view to view all the results that filtered to contain user input ( if there is a better widget to do this instead of text view it is fine for me).
//searchActivity.class //
package com.example.boc.PhoneNumbers;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.RecyclerView;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.example.boc.R;
import com.example.boc.main.phone_nombers_Activity;
import com.example.boc.models.Note;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.firestore.CollectionReference;
import com.google.firebase.firestore.DocumentReference;
import com.google.firebase.firestore.DocumentSnapshot;
import com.google.firebase.firestore.FirebaseFirestore;
import com.google.firebase.firestore.Query;
import com.google.firebase.firestore.QueryDocumentSnapshot;
import com.google.firebase.firestore.QuerySnapshot;
import org.w3c.dom.Text;
import java.util.ArrayList;
import java.util.Map;
public class searchActivity extends phone_nombers_Activity {
private DocumentSnapshot documentSnapshot;
public TextView resultsTxt , userinput ;
public FirebaseFirestore db = FirebaseFirestore.getInstance();
public Note note ;
public LinearLayout layout ;
private ArrayList<Note> mNotes = new ArrayList<>();
private DocumentReference noteRef = db.collection("notes").document();
private CollectionReference notesCollectionRef = db.collection("notes");
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate( savedInstanceState );
setContentView( R.layout.activity_search );
final EditText userinput = findViewById( R.id.userInputtxt );
final Button findbutton = findViewById( R.id.findBtn );
Button openresultBtn = findViewById( R.id.openresult );
final TextView previewResultTextview = findViewById( R.id.resultsTxt );
FirebaseFirestore db = FirebaseFirestore.getInstance();
CollectionReference notesCollectionRef = db
.collection("notes");
Query notesQuery = null;
if(documentSnapshot != null){
notesQuery = notesCollectionRef;
}
else{
notesQuery = notesCollectionRef
.orderBy("timestamp", Query.Direction.ASCENDING);
}
notesQuery.get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
#Override
public void onComplete(#NonNull Task<QuerySnapshot> task) {
if(task.isSuccessful()){
String data = "";
for(final QueryDocumentSnapshot document: task.getResult()){
Note note = document.toObject(Note.class);
String title = note.getTitle();
String content = note.getContent();
data += "Title:" + title + "\nDescrition:" + content + "\n\n";
mNotes.add(note);
if( userinput !=null ) {
findbutton.setOnClickListener( new View.OnClickListener() {
#Override
public void onClick(View v) {
final String userinputString = userinput.getText().toString();
Note match = null;
String matcheddata ="";
for (Note note : mNotes) {
if (note.getTitle().contains(userinputString)) {
match = note;
String matchedtitle = match.getTitle();
String matchedcontent = match.getContent();
matcheddata += "Title:" + matchedtitle + "\nDescrition:" + matchedcontent + "\n\n";
break;
}
}
if (match != null) {
// Found a match
previewResultTextview.setText(matcheddata);
}
else {
previewResultTextview.setText( "no match found" );
}
}
} );
}
else {
userinput.setError( "اسم الملف مطلوب" );
}
}
}
}
});
}
#Override
public void onStart () {
final TextView previewResultTextview = findViewById( R.id.resultsTxt );
super.onStart();
notesCollectionRef.get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
#Override
public void onComplete(#NonNull Task<QuerySnapshot> task) {
if(task.isSuccessful()){
String data = "";
for(final QueryDocumentSnapshot document: task.getResult()){
Note note = document.toObject(Note.class);
String title = note.getTitle();
String content = note.getContent();
data += "Title:" + title + "\nDescrition:" + content + "\n\n";
mNotes.add(note);
previewResultTextview.setText( data );
}
}}});
}}

Making remote server calls in an Android application

I've made an apache thrift server and I have a service which contains several functions.
I'm trying to figure out what is the best way to make calls to the remote server from my android application.
My problem is that I can't make calls from the MainActivity thread (the main thread) - and I need to use most of the remote functions in my main activity methods.
I tried to make a static class with a static member called "Server" equals to the server object, and I set it in another thread and then I tried to call it in the main thread (the main activity class) - but I had errors because of jumping from one thread to another..
To be more specified I want something like that:
public class MainActivity extends Activity {
private service.Client myService;
#Override
protected void onCreate(Bundle savedInstanceState) {
..
... Some stuff that define myService (In a new thread ofcourse) ...
}
...
private void MyFunc1() {
myService.Method1();
}
private void MyFunc2() {
myService.Method2();
}
private void MyFunc3() {
myService.Method3();
}
}

I've got a library for talking to REST APIs. Feel free to slice, dice, and re-use: https://github.com/nedwidek/Android-Rest-API
The code is BSD or GPL.
Here's how I use what I have (I've trimmed MainActivity a bit, hopefully not too much):
package com.hatterassoftware.voterguide.api;
import java.util.HashMap;
public class GoogleCivicApi {
protected final String baseUrl = "https://www.googleapis.com/civicinfo/us_v1/";
protected String apiKey = "AIzaSyBZIP5uY_fMF35SVVrytpKgHtppBbj8J0I";
public static final String DATE_FORMAT = "yyyy-MM-dd";
protected static HashMap<String, String> headers;
static {
headers = new HashMap<String, String>();
headers.put("Content-Type", "application/json");
}
public String createUrl(String uri, HashMap<String, String> params) {
String url = baseUrl + uri + "?key=" + apiKey;
if (params != null) {
for (String hashKey: params.keySet()) {
url += hashKey + "=" + params.get(hashKey) + "&";
}
url = url.substring(0, url.length());
}
return url;
}
}
package com.hatterassoftware.voterguide.api;
import android.util.Log;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.hatterassoftware.restapi.GetTask;
import com.hatterassoftware.restapi.HttpReturn;
import com.hatterassoftware.restapi.RestCallback;
import com.hatterassoftware.voterguide.api.callbacks.ElectionCallback;
import com.hatterassoftware.voterguide.api.models.Election;
public class ElectionsQuery extends GoogleCivicApi implements RestCallback {
GetTask getTask;
ElectionCallback callback;
final String TAG = "ElectionQuery";
public ElectionsQuery(ElectionCallback callback) {
String url = this.createUrl("elections", null);
this.callback = callback;
Log.d(TAG, "Creating and executing task for: " + url);
getTask = new GetTask(url, this, null, null, null);
getTask.execute();
}
#Override
public void onPostSuccess() {
Log.d(TAG, "onPostSuccess entered");
}
#Override
public void onTaskComplete(HttpReturn httpReturn) {
Log.d(TAG, "onTaskComplete entered");
Log.d(TAG, "httpReturn.status = " + httpReturn.status);
if (httpReturn.content != null) Log.d(TAG, httpReturn.content);
if (httpReturn.restException != null) Log.d(TAG, "Exception in httpReturn", httpReturn.restException);
JsonParser parser = new JsonParser();
JsonElement electionArrayJson = ((JsonObject)parser.parse(httpReturn.content)).get("elections");
Log.d(TAG, electionArrayJson.toString());
Gson gson = new GsonBuilder().setDateFormat(GoogleCivicApi.DATE_FORMAT).create();
Election[] elections = gson.fromJson(electionArrayJson.toString(), Election[].class);
callback.retrievedElection(elections);
}
}
package com.hatterassoftware.voterguide;
import java.util.Calendar;
import java.util.List;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.hatterassoftware.voterguide.api.ElectionsQuery;
import com.hatterassoftware.voterguide.api.VoterInfoQuery;
import com.hatterassoftware.voterguide.api.callbacks.ElectionCallback;
import com.hatterassoftware.voterguide.api.callbacks.VoterInfoCallback;
import com.hatterassoftware.voterguide.api.models.Election;
import com.hatterassoftware.voterguide.api.models.VoterInfo;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.text.Editable;
import android.text.Html;
import android.text.TextWatcher;
import android.text.method.LinkMovementMethod;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ProgressBar;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends SherlockFragmentActivity implements ElectionCallback, VoterInfoCallback {
private ProgressBar mProgressBar;
public Button submit;
public Spinner state;
public Spinner election;
public EditText address;
public EditText city;
public EditText zip;
private int count=0;
private Object lock = new Object();
private static final String TAG = "MainActivity";
public static final String VOTER_INFO = "com.hatterassoftware.voterguide.VOTER_INFO";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mProgressBar = (ProgressBar) findViewById(R.id.home_progressBar);
Resources res = getResources();
SharedPreferences mPrefs = getApplicationSharedPreferences();
ImageButton gpsButton = (ImageButton) findViewById(R.id.locate);
try {
LocationManager manager = (LocationManager) getSystemService( Context.LOCATION_SERVICE );
if (!manager.isProviderEnabled(Context.LOCATION_SERVICE)) {
gpsButton.setClickable(false);
}
} catch(Exception e) {
Log.d(TAG, e.getMessage(), e);
gpsButton.setClickable(false);
gpsButton.setEnabled(false);
}
submit = (Button) findViewById(R.id.submit);
submit.setClickable(false);
submit.setEnabled(false);
state = (Spinner) findViewById(R.id.state);
election = (Spinner) findViewById(R.id.election);
address = (EditText) findViewById(R.id.streetAdress);
city = (EditText) findViewById(R.id.city);
zip = (EditText) findViewById(R.id.zip);
submit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
doSubmit();
}
});
gpsButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
doLocate();
}
});
// Let's check for network connectivity before we get down to business.
if (Utils.isNetworkAvailable(this, true)) {
// Show the disclaimer on first run.
if(mPrefs.getBoolean("firstRun", true)) {
AlertDialog alert = new AlertDialog.Builder(this).create();
alert.setCancelable(false);
alert.setTitle(res.getString(R.string.welcome));
LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.custom_dialog, null);
TextView alertContents = (TextView) layout.findViewById(R.id.custom_dialog_text);
alertContents.setMovementMethod(LinkMovementMethod.getInstance());
alertContents.setText(Html.fromHtml(res.getString(R.string.welcome_dialog_text)));
alert.setView(alertContents);
alert.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
SharedPreferences mPrefs = getApplicationSharedPreferences();
SharedPreferences.Editor editor = mPrefs.edit();
editor.putBoolean("firstRun", false);
editor.commit();
dialog.dismiss();
retrieveElections();
}
});
alert.show();
} else {
retrieveElections();
}
}
}
#Override
public void onResume() {
super.onResume();
// Let's check for network connectivity before we get down to business.
Utils.isNetworkAvailable(this, true);
LocationManager manager = (LocationManager) getSystemService( Context.LOCATION_SERVICE );
if (!(manager.isProviderEnabled(LocationManager.GPS_PROVIDER)
|| manager.isProviderEnabled(LocationManager.NETWORK_PROVIDER))) {
Toast.makeText(this, "GPS is not available", 2).show();
ImageButton gpsButton = (ImageButton) findViewById(R.id.locate);
gpsButton.setClickable(false);
}
}
public SharedPreferences getApplicationSharedPreferences() {
Context mContext = this.getApplicationContext();
return mContext.getSharedPreferences("com.hatterassoftware.voterguide", MODE_PRIVATE);
}
private void showSpinner() {
synchronized(lock) {
count++;
mProgressBar.setVisibility(View.VISIBLE);
}
}
private void hideSpinner() {
synchronized(lock) {
count--;
if(count < 0) { // Somehow we're trying to hide it more times than we've shown it.
count=0;
}
if (count == 0) {
mProgressBar.setVisibility(View.INVISIBLE);
}
}
}
public void retrieveElections() {
Log.d(TAG, "Retrieving the elections");
showSpinner();
ElectionsQuery query = new ElectionsQuery(this);
}
#Override
public void retrievedElection(Election... elections) {
Log.d(TAG, "Retrieved the elections");
hideSpinner();
for (int i=0; i<elections.length; i++) {
Log.d(TAG, elections[i].toString());
}
ArrayAdapter arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_spinner_item, elections);
arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner spinner = (Spinner) this.findViewById(R.id.election);
spinner.setAdapter(arrayAdapter);
}
}