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Why my recyclerview isn't showing any item?

I just created my recyclerview to show a cardview when I just filling the required data on AddNewTimerFragment.java. But somehow it wont show the card that contains the data that I've fill in before. I've tried to changes something, but doesn't work.
Code :
MainActivity.java
package com.mobprog.ius.dwasu;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.LinkedList;
public class MainActivity extends AppCompatActivity {
private ArrayList<MyListDataTimer> mintervalTimeList = new ArrayList();
private RecyclerView mRecyclerView;
private alarmListAdapter mAdapter;
public boolean isFragmentAddNewAlarmDisplayed = false;
static final String STATE_FRAGMENT = "state_of_fragment";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
((TextView) findViewById(R.id.textUserName)).setText("Hello " + getSharedPreferences("Dwasu", 0).getString("user", ""));
if (getSharedPreferences("Dwasu", 0) == null || !getSharedPreferences("Dwasu", 0).contains("user")) {
startActivity(new Intent(MainActivity.this, LoginActivity.class));
finish();
}
// Create recycler view.
mRecyclerView = findViewById(R.id.recyclerView);
// Create an adapter and supply the data to be displayed.
mAdapter = new alarmListAdapter(getApplicationContext(), mintervalTimeList);
// Connect the adapter with the recycler view.
mRecyclerView.setAdapter(mAdapter);
// Give the recycler view a default layout manager.
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
if (savedInstanceState != null)
isFragmentAddNewAlarmDisplayed = savedInstanceState.getBoolean(STATE_FRAGMENT);
Button mnewReminderButton = findViewById(R.id.newReminder);
mnewReminderButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Log.d(MainActivity.class.getSimpleName(),"Button Clicked");
displayFragment();
}
});
ImageButton mlogOutButton = findViewById(R.id.logOutButton);
findViewById(R.id.logOutButton).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
getSharedPreferences("Dwasu", 0).edit().clear().apply();
startActivity(new Intent(MainActivity.this, MainActivity.class));
finish();
}
});
// // Get the Drawable custom_progressbar
// Drawable draw = ResourcesCompat.getDrawable(getResources(), R.drawable.progress_bar, null);
// // set the drawable as progress drawable
// ProgressBar.setProgressDrawable(draw);
}
public void onSaveInstanceState(Bundle savedInstanceState) {
// Save the state of the fragment (true=open, false=closed).
savedInstanceState.putBoolean(STATE_FRAGMENT, isFragmentAddNewAlarmDisplayed);
super.onSaveInstanceState(savedInstanceState);
}
public void closeFragment(){
// Get the FragmentManager.
FragmentManager fragmentManager = getSupportFragmentManager();
// Check to see if the fragment is already showing.
AddNewTimerFragment simpleFragment = (AddNewTimerFragment) fragmentManager
.findFragmentById(R.id.FragmentContainer_AddNewAlarm);
if (simpleFragment != null) {
// Create and commit the transaction to remove the fragment.
FragmentTransaction fragmentTransaction =
fragmentManager.beginTransaction();
fragmentTransaction.remove(simpleFragment).commit();
}
// Set boolean flag to indicate fragment is closed.
isFragmentAddNewAlarmDisplayed = false;
}
public void displayFragment(){
AddNewTimerFragment simpleFragment = AddNewTimerFragment.newInstance();
// Get the FragmentManager and start a transaction.
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager
.beginTransaction();
// Add the SimpleFragment.
fragmentTransaction.add(R.id.FragmentContainer_AddNewAlarm,
simpleFragment).addToBackStack(null).commit();
// Set boolean flag to indicate fragment is open.
isFragmentAddNewAlarmDisplayed = true;
}
}
AddNewTimerFragment.java
package com.mobprog.ius.dwasu;
import android.app.ProgressDialog;
import android.app.TimePickerDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.Spinner;
import android.widget.TimePicker;
import android.widget.Toast;
import org.apache.http.entity.mime.content.StringBody;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Calendar;
import static android.content.Context.MODE_PRIVATE;
public class AddNewTimerFragment extends Fragment {
Button startTime;
Button endTime;
Button meditConfirm_button;
int startHour;
int startMinute;
int endHour;
int endMinute;
int position = 1;
long totalSize = 0;
String value;
ProgressDialog progDailog;
View rootview;
private SharedPreferences mPreferences;
private String sharedPrefFile =
"com.mobprog.ius.dwasu";
public AddNewTimerFragment() {
// Required empty public constructor
}
public static AddNewTimerFragment newInstance() {
return new AddNewTimerFragment();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_add_new_alarm,
container, false);
rootview = rootView;
/*Shared Pref*/
mPreferences = this.getActivity().getSharedPreferences(sharedPrefFile, MODE_PRIVATE);
SharedPreferences.Editor mPreferencesEditor = mPreferences.edit();
ImageButton mbtnCloseFragment = rootView.findViewById(R.id.btnCloseFragment);
mbtnCloseFragment.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
((MainActivity) getActivity()).closeFragment();
}
});
// initiate the edit text
startTime = rootView.findViewById(R.id.startTimePick);
startTime.setText(Calendar.getInstance().get(Calendar.HOUR_OF_DAY) + ":" + Calendar.getInstance().get(Calendar.MINUTE));
// perform click event listener on edit text
startTime.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Calendar mcurrentTime = Calendar.getInstance();
startHour = mcurrentTime.get(Calendar.HOUR);
startMinute = mcurrentTime.get(Calendar.MINUTE);
TimePickerDialog mStartTimePicker;
mStartTimePicker = new TimePickerDialog(getContext(), new TimePickerDialog.OnTimeSetListener() {
#Override
public void onTimeSet(TimePicker timePicker, int selectedStartHour, int selectedStartMinute) {
if (selectedStartMinute == 0) {
startTime.setText(selectedStartHour + ":00");
} else if (selectedStartMinute < 10) {
if (selectedStartHour < 10) {
startTime.setText("0" + selectedStartHour + ":0" + selectedStartMinute);
}
} else {
startTime.setText(selectedStartHour + ":" + selectedStartMinute);
}
startHour = selectedStartHour;
}
}, startHour, startMinute, true);//Yes 24 hour time
mStartTimePicker.show();
}
});
endTime = rootView.findViewById(R.id.endTimePick);
endTime.setText(Calendar.getInstance().get(Calendar.HOUR_OF_DAY) + ":" + Calendar.getInstance().get(Calendar.MINUTE));
// perform click event listener on edit text
endTime.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Calendar mcurrentTime = Calendar.getInstance();
endHour = mcurrentTime.get(Calendar.HOUR);
endMinute = mcurrentTime.get(Calendar.MINUTE);
TimePickerDialog mEndTimePicker;
mEndTimePicker = new TimePickerDialog(getContext(), new TimePickerDialog.OnTimeSetListener() {
#Override
public void onTimeSet(TimePicker timePicker, int selectedEndHour, int selectedEndMinute) {
if (selectedEndMinute == 0) {
endTime.setText(selectedEndHour + ":00");
} else if (selectedEndMinute < 10) {
if (selectedEndHour < 10) {
endTime.setText("0" + selectedEndHour + ":0" + selectedEndMinute);
}
} else {
endTime.setText(selectedEndHour + ":" + selectedEndMinute);
}
endHour = selectedEndHour;
}
}, endHour, endMinute, true);//Yes 24 hour time
mEndTimePicker.show();
}
});
Spinner spinner = (Spinner) rootView.findViewById(R.id.timeIntervalPick);
// Create an ArrayAdapter using the string array and a default spinner layout
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getContext(),
R.array.listtimer, R.layout.spinner_support);
// Specify the layout to use when the list of choices appears
adapter.setDropDownViewResource(R.layout.spinner_item);
// Apply the adapter to the spinner
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
// your code here
String[] valueListTimer = getResources().getStringArray(R.array.valueListTimer);
value = valueListTimer[position];
Log.e("Value of Spinner", value);
}
#Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});
meditConfirm_button = rootView.findViewById(R.id.editConfirm_button);
meditConfirm_button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String.valueOf(startHour);
String.valueOf(endHour);
String.valueOf(value);
new MyListDataTimer(String.valueOf(startHour),String.valueOf(endHour),String.valueOf(value),String.valueOf(position));
new UploadAlarmDataToServer().execute();
position++;
}
});
// Inflate the layout for this fragment
return rootView;
}
private class UploadAlarmDataToServer extends AsyncTask<Void, Integer, String> {
#Override
protected void onPreExecute() {
progDailog = new ProgressDialog(getContext());
progDailog.setMessage("Menyimpan...");
progDailog.setIndeterminate(false);
progDailog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progDailog.setCancelable(false);
progDailog.setCanceledOnTouchOutside(false);
progDailog.show();
super.onPreExecute();
}
#Override
protected String doInBackground(Void... params) {
String data = null;
try {
data = sendDataTimer();
} catch (Exception e) {
e.printStackTrace();
data = "Gagal";
}
return data;
}
public String sendDataTimer() throws Exception {
URL url = new URL("https://ius.mobile.indoserver.web.id/alarmData.php");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
AndroidMultiPartEntity entity = new AndroidMultiPartEntity(
new AndroidMultiPartEntity.ProgressListener() {
#Override
public void transferred(long num) {
publishProgress((int) ((num / (float) totalSize) * 100));
}
});
entity.addPart("startHour", new StringBody(startHour + ""));
entity.addPart("endHour", new StringBody(endHour + ""));
entity.addPart("intervalWaktu", new StringBody(value + ""));
totalSize = entity.getContentLength();
con.setRequestMethod("POST");
con.setRequestProperty("Connection", "Keep-Alive");
con.addRequestProperty("Content-length", totalSize + "");
con.addRequestProperty(entity.getContentType().getName(), entity.getContentType().getValue());
OutputStream os = con.getOutputStream();
entity.writeTo(con.getOutputStream());
os.close();
con.connect();
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuilder response = new StringBuilder();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
return response.toString();
}
#Override
protected void onPostExecute(String result) {
progDailog.dismiss();
if (result != null) {
Log.e("UPLOAD", result);
if (result.equalsIgnoreCase("OK")) {
Toast.makeText(getContext(), "Data Alarm tersimpan", Toast.LENGTH_SHORT).show();
startActivity(new Intent(getContext(), MainActivity.class));
}
}
super.onPostExecute(result);
}
}
}
alarmListAdapter.java
package com.mobprog.ius.dwasu;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
import java.util.LinkedList;
public class alarmListAdapter extends RecyclerView.Adapter<alarmListAdapter.alarmListHolder>{
private final ArrayList<MyListDataTimer> mintervalTimeList;
private LayoutInflater mInflater;
public alarmListAdapter(Context context, ArrayList<MyListDataTimer> mintervalTimeList) {
mInflater = LayoutInflater.from(context);
this.mintervalTimeList = mintervalTimeList;
}
#Override
public alarmListHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View mItemView = mInflater.inflate(R.layout.alarm_item,
parent, false);
return new alarmListHolder(mItemView, this);
}
#Override
public void onBindViewHolder(alarmListAdapter.alarmListHolder holder, int position) {
final MyListDataTimer myListData = mintervalTimeList.get(position);
holder.mintervalTime.setText(myListData.getIntervalWaktu());
holder.mtimeWork.setText(myListData.getStartHour() +":00 - " + myListData.getEndHour() +":00");
}
#Override
public int getItemCount() {
return mintervalTimeList.size();
}
public class alarmListHolder extends RecyclerView.ViewHolder {
public TextView mintervalTime;
public TextView mtimeWork;
final alarmListAdapter mAdapter;
public alarmListHolder(View itemView, alarmListAdapter adapter) {
super(itemView);
mintervalTime = itemView.findViewById(R.id.intervalTime);
mtimeWork = itemView.findViewById(R.id.timeWork);
this.mAdapter = adapter;
}
}
}
**MyListDataTimer.java**
package com.mobprog.ius.dwasu;
public class MyListDataTimer {
private String startHour;
private String endHour;
private String intervalWaktu;
private String position;
public MyListDataTimer(String startHour, String endHour, String intervalWaktu, String position) {
this.startHour = startHour;
this.endHour = endHour;
this.intervalWaktu = intervalWaktu;
this.position = position;
}
public String getStartHour() {
return startHour;
}
public void setStartHour(String startHour) {
this.startHour = startHour;
}
public String getEndHour() {
return endHour;
}
public void setEndHour(String endHour) {
this.endHour = endHour;
}
public String getIntervalWaktu() {
return intervalWaktu;
}
public void setIntervalWaktu(String intervalWaktu) {
this.intervalWaktu = intervalWaktu;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
}

issue in change row in recyclerview

I am working on a shopping Android app, I have a CartActivity. In my CartActivity I put RecyclerView and each row in this RecyclerView have 2 buttons, one (+) button to increase the quantity for this item in the cart and other (-) button to delete 1 from the quantity of this item in the row.
Now when I have a single item in my cart, everything is ok. but when I have multi-item in cart (multi-row in RV) I have the issue which is: When I press (+) or (-) button on any item in RecyclerView the effect of quantity changing shown on the last item in this list (last row) and there is no changing on my selected row!
this is my adapter code:
package com.example.souqsenae.adapters;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
import com.example.souqsenae.API_Utility.IApi;
import com.example.souqsenae.API_Utility.RetrofitBuilder;
import com.example.souqsenae.R;
import com.example.souqsenae.activities.cartActivity;
import com.example.souqsenae.models.AddToCart;
import com.example.souqsenae.models.CartInfo;
import com.example.souqsenae.models.Parts;
import com.example.souqsenae.models.RemoveProduct;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
public class CartAdapter extends
RecyclerView.Adapter<CartAdapter.CartAdapterViewHolder> {
private Context context;
private ArrayList<CartInfo.Item> mItem;
private ItemOnClickHandler mItemOnClickHandler;
RetrofitBuilder rB = new RetrofitBuilder();
IApi service = rB.retrofit.create(IApi.class);
int totalQty =0; int subTotal = 0;
TextView tv1, tv4;
private static SharedPreferences pref;
String cookie;
public CartAdapter(ItemOnClickHandler cartAdapterOnClickHandler, Context _context) {
mItemOnClickHandler = cartAdapterOnClickHandler;
pref = _context.getSharedPreferences("log", Context.MODE_PRIVATE);
}
public void setProductsData(ArrayList<CartInfo.Item> item) {
mItem = item;
notifyDataSetChanged();
}
public void addAll(ArrayList<CartInfo.Item> newList) {
int lastIndex = getItemCount();
mItem.addAll(newList);
notifyItemRangeInserted(lastIndex, newList.size());
}
public void clear() {
int size = mItem.size();
if (size > 0) {
for (int i = 0; i < size; i++) {
mItem.remove(0);
}
notifyItemRangeRemoved(0, size);
}
}
#Override
public CartAdapter.CartAdapterViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
// Inflate the custom layout
View contactView = inflater.inflate(R.layout.row_cart, parent, false);
// Return a new holder instance
CartAdapterViewHolder viewHolder = new CartAdapterViewHolder(contactView);
return viewHolder;
}
#Override
public void onBindViewHolder(CartAdapter.CartAdapterViewHolder viewHolder, int position) {
// viewHolder.iv.setAnimation(AnimationUtils.loadAnimation(context, R.anim.fade_transition_animation));
viewHolder.container.setAnimation(AnimationUtils.loadAnimation(context,R.anim.fade_transition_animation));
final CartInfo.Item cartInfo = mItem.get(position);
tv1 = viewHolder.qty;
TextView tv2 = viewHolder.tvItemName;
TextView tv3 = viewHolder.tvItemDesc;
tv4 = viewHolder.tvSubTotal;
Button button = viewHolder.btnMin;
Button button1 = viewHolder.btnPlus;
totalQty = cartInfo.getQty();
tv1.setText(String.valueOf(totalQty));
tv2.setText(cartInfo.getName());
tv4.setText(String.valueOf(cartInfo.getSubtotal()));
cookie = pref.getString("cookie", "");
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if((totalQty -1) >0){
totalQty = totalQty -1;
tv1.setText(String.valueOf(totalQty));
subTotal = totalQty * (cartInfo.getPrice());
tv4.setText(String.valueOf(subTotal));
}
if((totalQty - 1) == 0){
// remove from cart:
String row = cartInfo.getRowid();
String product_id = cartInfo.getId();
Call<RemoveProduct> call = service.updateCartQty( cookie,product_id,totalQty);
call.enqueue(new Callback<RemoveProduct>() {
#Override
public void onResponse(Call<RemoveProduct> call, Response<RemoveProduct> response) {
if(response.isSuccessful()){
notifyDataSetChanged();
Intent intent = new Intent(context, cartActivity.class);
context.startActivity(intent);
}
}
#Override
public void onFailure(Call<RemoveProduct> call, Throwable t) {
}
});
}
}
});
button1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
int vendor = Integer.parseInt(cartInfo.getVendor());
int product_id = Integer.parseInt(cartInfo.getId());
Call<AddToCart> call = service.addToCart(cookie,product_id,vendor,1);
call.enqueue(new Callback<AddToCart>() {
#Override
public void onResponse(Call<AddToCart> call, Response<AddToCart> response) {
if(response.isSuccessful()){
totalQty = totalQty +1;
tv1.setText(String.valueOf(totalQty));
subTotal = totalQty * (cartInfo.getPrice());
tv4.setText(String.valueOf(subTotal));
}
}
#Override
public void onFailure(Call<AddToCart> call, Throwable t) {
}
});
}
});
}
// Returns the total count of items in the list
#Override
public int getItemCount() {
if(mItem == null) {
return 0;
}
return mItem.size();
}
public class CartAdapterViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public final Button btnPlus;
public final Button btnMin;
public final TextView qty;
public final TextView tvItemName;
public final TextView tvItemDesc;
public final TextView tvSubTotal;
public final LinearLayout container;
public CartAdapterViewHolder(View view) {
super(view);
qty = (TextView) view.findViewById(R.id.partCount);
tvItemName = (TextView) view.findViewById(R.id.tv_item_name);
tvItemDesc = (TextView) view.findViewById(R.id.tv_item_description);
tvSubTotal = (TextView) view.findViewById(R.id.tvSubTotal);
btnMin = (Button) view.findViewById(R.id.btnMin);
btnPlus = (Button) view.findViewById(R.id.btnPlus);
container = (LinearLayout) view.findViewById(R.id.layout_part_item);
view.setOnClickListener(this);
}
#Override
public void onClick(View view) {
int position = getAdapterPosition();
CartInfo.Item selectedProduct = mItem.get(position);
mItemOnClickHandler.onClickItem(selectedProduct);
}
}
public interface ItemOnClickHandler {
void onClickItem(CartInfo.Item cartInfo);
}
}
I don't know what the wrong :(
Thanks

Better to use interface to perform click operations.
Whenever button clicked, update the quantity for a specific item and call adapter.notifyDataSetChanged();.

You have to made change for quantity in your model when click + or - button. So you have to add cartInfo.setQty(totalQty); inside your button clicks
Don't use global variables if you are using variable inside onBind()
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if((totalQty -1) >0){
cartInfo.setQty(cartInfo.getQty() -1);
tv1.setText(String.valueOf(cartInfo.getQty()));
tv4.setText(String.valueOf(cartInfo.getQty() * (cartInfo.getPrice())));
}
if((totalQty - 1) == 0){
// remove from cart:
String row = cartInfo.getRowid();
String product_id = cartInfo.getId();
mItem.remove(cartInfo);
Call<RemoveProduct> call = service.updateCartQty( cookie,product_id,totalQty);
call.enqueue(new Callback<RemoveProduct>() {
#Override
public void onResponse(Call<RemoveProduct> call, Response<RemoveProduct> response) {
if(response.isSuccessful()){
notifyDataSetChanged();
Intent intent = new Intent(context, cartActivity.class);
context.startActivity(intent);
}
}
#Override
public void onFailure(Call<RemoveProduct> call, Throwable t) {
}
});
notifyDataSetChanged();
}
}
});
button1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
int vendor = Integer.parseInt(cartInfo.getVendor());
int product_id = Integer.parseInt(cartInfo.getId());
cartInfo.setQty(cartInfo.getQty()+1);
cartInfo.setQty(cartInfo.getQty()+1);
tv1.setText(String.valueOf(cartInfo.getQty()));
tv4.setText(String.valueOf(cartInfo.getQty() * (cartInfo.getPrice())));
Call<AddToCart> call = service.addToCart(cookie,product_id,vendor,1);
call.enqueue(new Callback<AddToCart>() {
#Override
public void onResponse(Call<AddToCart> call, Response<AddToCart> response) {
if(response.isSuccessful()){
}
}
#Override
public void onFailure(Call<AddToCart> call, Throwable t) {
}
});
}
});

AdMob Interstitial not loading

I have a problem with admob ads.
The banner ad seems to work fine but the Interstitial is not loading.
I have tried various solutions, generating different ad unit id's and trying admob test ids.
QuoteActivity.java
package com.axdev.thequotesgarden;
import android.annotation.TargetApi;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Typeface;
import android.os.Build;
import android.preference.PreferenceManager;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.ads.AdListener;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.InterstitialAd;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Locale;
public class QuoteActivity extends ActionBarActivity implements
TextToSpeech.OnInitListener {
private int ID;
private String mode,fav,text;
private Quote qte;
private DataBaseHandler db;
private ArrayList<Quote> myList = new ArrayList<Quote>();
private TextView textAuth,textQuote;
private ImageView imgIcon;
private ImageButton btnNext,btnPrevious;
private TextToSpeech tts;
private RoundImage roundedImage;
private AdView adView;
private InterstitialAd interstitial;
SharedPreferences sharedPrefs;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quote);
final ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
getWindow().setStatusBarColor(getResources().getColor(R.color.colorPrimaryDark));
}
db = new DataBaseHandler(this);
textAuth = (TextView) findViewById(R.id.textAuth);
textQuote = (TextView) findViewById(R.id.textQuote);
imgIcon = (ImageView) findViewById(R.id.imgcon);
btnNext = (ImageButton) findViewById(R.id.btn_next);
btnPrevious = (ImageButton) findViewById(R.id.btn_prev);
Typeface fontQuote = Typeface.createFromAsset(getAssets(),
"fonts/Roboto-Light.ttf");
Typeface fontAuth = Typeface.createFromAsset(getAssets(),
"fonts/Roboto-Italic.ttf");
textQuote.setTypeface(fontQuote);
textQuote.setTextSize(18);
textAuth.setTypeface(fontAuth);
ID = getIntent().getExtras().getInt("id");
mode = getIntent().getExtras().getString("mode");
if(mode.equals("qteday")){
qte = db.getQuote(ID);
btnNext.setVisibility(View.GONE);
btnPrevious.setVisibility(View.GONE);
}
else {
myList = (ArrayList<Quote>) getIntent().getSerializableExtra("array");
qte = myList.get(ID);}
textAuth.setText(qte.getName());
textQuote.setText(qte.getQuote());
checkPicure();
btnNext.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (ID < (myList.size() - 1)) {
ID++;
qte = myList.get(ID);
textAuth.setText(qte.getName());
textQuote.setText(qte.getQuote());
checkPicure();
}
}
});
btnPrevious.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (ID > 0) {
ID--;
qte = myList.get(ID);
textAuth.setText(qte.getName());
textQuote.setText(qte.getQuote());
checkPicure();
}
}
});
fav = qte.getFav();
adView = new AdView(this);
adView.setAdUnitId(getResources().getString(R.string.banner_ad_unit_id));
adView.setAdSize(AdSize.BANNER);
LinearLayout layout = (LinearLayout) findViewById(R.id.layAdsQuote);
layout.addView(adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
if(mode.equals("qteday")){
tts = new TextToSpeech(this, this);
speakOut();
interstitial = new InterstitialAd(this);
interstitial.setAdUnitId(getResources().getString(R.string.interstitial_ad_unit_id));
AdRequest adRequest2 = new AdRequest.Builder().build();
interstitial.loadAd(adRequest2);
interstitial.setAdListener(new AdListener() {
#Override
public void onAdLoaded() {
displayInterstitial();
}
});
}
}
#Override
public void onDestroy() {
if (tts != null) {
tts.stop();
tts.shutdown();
}
super.onDestroy();
}
public void checkPicure(){
boolean isExist = false;
InputStream imageStream = null;
try {
imageStream = getAssets().open("authors/"+qte.getFileName()+".jpg");
isExist =true;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (isExist != false){
Bitmap theImage = BitmapFactory.decodeStream(imageStream);
roundedImage = new RoundImage(theImage);
imgIcon.setImageDrawable(roundedImage );
}
else {
Bitmap bm = BitmapFactory.decodeResource(getResources(),R.mipmap.author);
roundedImage = new RoundImage(bm);
imgIcon.setImageDrawable(roundedImage);
}
}
public void doShare() {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, "Quote");
intent.putExtra(Intent.EXTRA_TEXT,
qte.getQuote() + " - " + qte.getName());
QuoteActivity.this.startActivity(Intent.createChooser(intent,
getResources().getString(R.string.share)));
}
#Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
Locale loc = new Locale("en", "UK");
tts.setLanguage(loc);
tts.setSpeechRate((float) 0.8);
speakOut();
} else {
Log.e("TTS", "Initilization Failed");
}
}
private void speakOut() {
sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
Boolean speaker = sharedPrefs.getBoolean("prefSpeaker", true);
if (speaker.equals(true)) {
text = qte.getQuote() + "\n" + qte.getName();
if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP) {
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null, null);
}
else {
tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_quote, menu);
if (fav.equals("0")) {
menu.findItem(R.id.action_favorite).setIcon(R.mipmap.not_fav);
}
if (fav.equals("1")) {
menu.findItem(R.id.action_favorite).setIcon(R.mipmap.fav);
}
;
return true;
}
#TargetApi(11)
private void copyToClipBoard(String qte) {
int sdk = android.os.Build.VERSION.SDK_INT;
if (sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
clipboard.setText(qte);
} else {
android.content.ClipboardManager clipboard = (android.content.ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
android.content.ClipData clip = android.content.ClipData.newPlainText("text", qte);
clipboard.setPrimaryClip(clip);
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
switch (item.getItemId()) {
case android.R.id.home:
this.finish();
break;
case R.id.action_share:
doShare();
break;
case R.id.copy:
String text = qte.getQuote() + "- " + qte.getName();
copyToClipBoard(text);
Toast.makeText(getApplicationContext(),
getResources().getString(R.string.copy_msg),
Toast.LENGTH_LONG).show();
break;
case R.id.action_favorite:
if (qte.getFav().equals("0")) {
qte.setFav("1");
db.updateQuote(qte);
item.setIcon(R.mipmap.fav);
} else if (qte.getFav().equals("1")) {
qte.setFav("0");
db.updateQuote(qte);
item.setIcon(R.mipmap.not_fav);
}
}
return true;
}
public void displayInterstitial() {
if (interstitial.isLoaded()) {
interstitial.show();
}
}
}
QuotesActivity.java
package com.axdev.thequotesgarden;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdSize;
import com.google.android.gms.ads.AdView;
import java.util.ArrayList;
import java.util.List;
public class QuotesActivity extends ActionBarActivity {
private ArrayList<Quote> imageArry = new ArrayList<Quote>();
private QuotesListAdapter adapter;
private String Activitytype;
private DataBaseHandler db;
private ListView dataList;
private int count;
private ImageView noQuotes;
private AdView adView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quotes);
final ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
getWindow().setStatusBarColor(getResources().getColor(R.color.colorPrimaryDark));
}
db = new DataBaseHandler(this);
noQuotes = (ImageView)findViewById(R.id.NoQuotes);
adapter = new QuotesListAdapter(this, R.layout.quote_items, imageArry);
dataList = (ListView) findViewById(R.id.quotesList);
Button btnLoadMore = new Button(this);
btnLoadMore.setBackgroundResource(R.drawable.btn_green);
btnLoadMore.setText(getResources().getText(R.string.btn_LoadMore));
btnLoadMore.setTextColor(0xffffffff);
Activitytype = getIntent().getExtras().getString("mode");
if (Activitytype.equals("isCategory")) {
String categoryValue = getIntent().getExtras()
.getString("category");
List<Quote> contacts = db.getQuotesByCategory(categoryValue);
for (Quote cn : contacts) {
imageArry.add(cn);
}
}
if (Activitytype.equals("isAuthor")) {
String authorValue = getIntent().getExtras().getString("name");
List<Quote> contacts = db.getQuotesByAuthor(authorValue);
for (Quote cn : contacts) {
imageArry.add(cn);
}
;
}
if (Activitytype.equals("isFavorite")) {
actionBar.setTitle(getResources().getText(R.string.title_activity_favorites));
List<Quote> contacts = db.getFavorites();
for (Quote cn : contacts) {
imageArry.add(cn);
}
;
if (imageArry.isEmpty()){
noQuotes.setVisibility(View.VISIBLE);
}
}
if (Activitytype.equals("allQuotes")) {
List<Quote> contacts = db.getAllQuotes(" LIMIT 50");
for (Quote cn : contacts) {
imageArry.add(cn);
}
;
dataList.addFooterView(btnLoadMore);
}
dataList.setAdapter(adapter);
dataList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View viewClicked,
int position, long idInDB) {
Intent i = new Intent(getApplicationContext(),
QuoteActivity.class);
Quote srr = imageArry.get(position);
i.putExtra("id",position);
i.putExtra("array", imageArry);
i.putExtra("mode", "");
startActivity(i);
}
});
btnLoadMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// Starting a new async task
new loadMoreListView().execute();
}
});
adView = new AdView(this);
adView.setAdUnitId(getResources().getString(R.string.banner_ad_unit_id));
adView.setAdSize(AdSize.BANNER);
LinearLayout layout = (LinearLayout) findViewById(R.id.layAdsQuotes);
layout.addView(adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
}
private class loadMoreListView extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
// Before starting background task
// Show Progress Dialog etc,.
}
protected Void doInBackground(Void... unused) {
runOnUiThread(new Runnable() {
public void run() {
count += 50;
List<Quote> contacts = db.getAllQuotes(" LIMIT "+count+ ",50");
for (Quote cn : contacts) {
imageArry.add(cn);
}
int currentPosition = dataList.getFirstVisiblePosition();
adapter = new QuotesListAdapter(QuotesActivity.this, R.layout.quote_items, imageArry);
dataList.setSelectionFromTop(currentPosition + 1, 0);
}
});
return (null);
}
protected void onPostExecute(Void unused) {
}
}
#Override
public void onBackPressed()
{
finish();
super.onBackPressed(); // optional depending on your needs
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_quotes, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
switch (item.getItemId()) {
case android.R.id.home:
this.finish();
break;
}
return true;
}
}

The simplest answer is that mode is not equal to "qteday"
if(mode.equals("qteday")){
Unless that is true, the interstitial will never be loaded.

Android Fragment Not Updating Image From Interface

I am trying to update a image from another thread to a fragment via interface. The code does manage to get into the interface but every time it gets to Left_Image.setImageDrawable(Image_Rotated); I keep getting a null pointer exception. If on the on create for the fragment i set a image it works but as soon as it tries to do it for the interface it comes up with the null pointer exception. I used the command isAdded()) to check if the fragment is attached and that keeps coming back as nothing but i cant seem to fix it and have it attached. Here is the code
Fragment:
import android.app.Activity;
import android.app.FragmentManager;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.preference.PreferenceFragment;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;
import java.util.logging.Handler;
public class Augmented_Reality extends PreferenceFragment implements SensorEventListener {
private SensorManager mSensorManager;
private Sensor mRotationVectorSensor;
private Sensor mMagneticSensor;
private final float[] mRotationMatrix = new float[16];
private Boolean MagnetButtonPressed = false;
private Boolean Left;
private Boolean Right;
Boolean Admin_Mode;
boolean Lock = false;
public SharedPreferences sharedpreferences;
public static final String MyPREFERENCES = "MyPrefs";
ToggleButton HeadTracker;
TextView Position;
TextView Position_Left;
TextView Position_Right;
ImageView Left_Image;
ImageView Right_Image;
private Image_Packet_Flag Image_Flag;
public final byte Image_Sync_Flag = 0x09;
private Context context;
Activity activity;
public Augmented_Reality() {
Image_Flag = new Image_Packet_Flag();
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
context = activity;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
mSensorManager = (SensorManager) getActivity().getSystemService(Context.SENSOR_SERVICE);
mRotationVectorSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR);
mMagneticSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
mSensorManager.registerListener(this, mRotationVectorSensor, 10000);
mSensorManager.registerListener(this, mMagneticSensor, 10000);
} catch (Exception ex) {
Toast.makeText(getActivity().getApplicationContext(), "failed sensor", Toast.LENGTH_SHORT).show();
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
activity = getActivity();
View rootView = inflater.inflate(R.layout.augmented_reality_view, container, false);
ActionBar actionBar = ((ActionBarActivity) activity).getSupportActionBar();
actionBar.hide();
HeadTracker = (ToggleButton) rootView.findViewById(R.id.HeadTracker);
Left_Image = (ImageView) rootView.findViewById(R.id.lefty);
Right_Image = (ImageView) rootView.findViewById(R.id.righty);
Bitmap icon = BitmapFactory.decodeResource(activity.getResources(),
R.drawable.ytyty);
BitmapDrawable Image = Rotate_Image(icon);
Left_Image.setImageDrawable(Image);
return rootView;
}
#Override
public void onSensorChanged(SensorEvent event) {
if (HeadTracker.isChecked() == true) {
if (event.sensor.getType() == Sensor.TYPE_ROTATION_VECTOR) {
SensorManager.getRotationMatrixFromVector(
mRotationMatrix, event.values);
if (mRotationMatrix[2] >= 0.6 && mRotationMatrix[0] >= -0.1 && mRotationMatrix[0] <= 0.2) {
Left = true;
Right = false;
} else if (mRotationMatrix[2] <= -0.6 && mRotationMatrix[0] >= -0.1 && mRotationMatrix[0] <= 0.2) {
Left = false;
Right = true;
} else {
Left = false;
Right = false;
}
}
}
if (event.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) {
if (event.values[2] >= 390) {
MagnetButtonPressed = true;
} else {
MagnetButtonPressed = false;
}
}
}
#Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
#Override
public void onPause() {
super.onPause();
mSensorManager.unregisterListener(this);
}
public BitmapDrawable Rotate_Image(Bitmap Image) {
Bitmap bitmapOrg = Image;
int width = bitmapOrg.getWidth();
int height = bitmapOrg.getHeight();
Matrix matrix = new Matrix();
matrix.postRotate(90);
Bitmap resizedBitmap = Bitmap.createBitmap(bitmapOrg, 0, 0, width, height, matrix, true);
BitmapDrawable bmd = new BitmapDrawable(resizedBitmap);
return bmd;
}
public void UpdateImages(Bitmap Image) {
System.out.println("Image Updated");
final BitmapDrawable Image_Rotated = Rotate_Image(Image);
System.out.println("Is Added Result: " + isAdded());
if(isAdded()) {
System.out.println("Fragment Added");
Left_Image.setImageDrawable(Image_Rotated);
Right_Image.setImageDrawable(Image_Rotated);
}
}
}
MainActivity:
package com.example.jaynesh.mobile_robot_interface.Main_Files;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
import com.example.jaynesh.mobile_robot_interface.Fragments.Augmented_Reality;
import com.example.jaynesh.mobile_robot_interface.Fragments.Main_Screen;
import com.example.jaynesh.mobile_robot_interface.Fragments.Settings;
import com.example.jaynesh.mobile_robot_interface.Fragments.Mission_Data;
import com.example.jaynesh.mobile_robot_interface.Navigation_Drawer.DrawerItemCustomAdapter;
import com.example.jaynesh.mobile_robot_interface.Navigation_Drawer.ObjectDrawerItem;
import com.example.jaynesh.mobile_robot_interface.Packets.Fragment_Tags.Augmented_Reality_Identifier;
import com.example.jaynesh.mobile_robot_interface.Packets.Fragment_Tags.Main_Screen_Identifier;
import com.example.jaynesh.mobile_robot_interface.Packets.Fragment_Tags.Mission_Data_Identifier;
import com.example.jaynesh.mobile_robot_interface.Packets.Fragment_Tags.Settings_Identifier;
import com.example.jaynesh.mobile_robot_interface.R;
import com.example.jaynesh.mobile_robot_interface.Socket.ClientThread;
public class MainActivity extends ActionBarActivity implements ClientThread.Image_Listener{
// declare properties
private String[] mNavigationDrawerItemTitles;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
// nav drawer title
private CharSequence mDrawerTitle;
// used to store app title
private CharSequence mTitle;
public SharedPreferences sharedpreferences;
public static final String MyPREFERENCES = "MyPrefs" ;
ClientThread clientThread;
private Augmented_Reality Augmented_Reality_Fragment;
private Main_Screen Main_Screen_Fragment;
private Mission_Data Mission_Data_Fragment;
private Settings Settings_Fragment;
private boolean Socket_Connected = false;
private int Current_Page = 0;
Main_Screen_Identifier MS;
Augmented_Reality_Identifier AR;
Mission_Data_Identifier MD;
Settings_Identifier SF;
Thread serverThread = null;
boolean NewPage = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
MS = new Main_Screen_Identifier();
AR = new Augmented_Reality_Identifier();
MD = new Mission_Data_Identifier();
SF = new Settings_Identifier();
NewPage = true;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// for proper titles
mTitle = mDrawerTitle = getTitle();
// initialize properties
mNavigationDrawerItemTitles = getResources().getStringArray(R.array.navigation_drawer_items_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// list the drawer items
ObjectDrawerItem[] drawerItem = new ObjectDrawerItem[4];
drawerItem[0] = new ObjectDrawerItem(R.drawable.ic_action_share, "Main Screen");
drawerItem[1] = new ObjectDrawerItem(R.drawable.ic_action_share, "Augment Reality View");
drawerItem[2] = new ObjectDrawerItem(R.drawable.ic_action_share, "Mission Data");
drawerItem[3] = new ObjectDrawerItem(R.drawable.ic_action_share, "Settings");
// Pass the folderData to our ListView adapter
DrawerItemCustomAdapter adapter = new DrawerItemCustomAdapter(this, R.layout.listview_item_row, drawerItem);
// Set the adapter for the list view
mDrawerList.setAdapter(adapter);
// set the item click listener
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// for app icon control for nav drawer
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description */
R.string.drawer_close /* "close drawer" description */
) {
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
getSupportActionBar().setTitle(mTitle);
}
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getSupportActionBar().setTitle(mDrawerTitle);
}
};
// Set the drawer toggle as the DrawerListener
mDrawerLayout.setDrawerListener(mDrawerToggle);
// enable ActionBar app icon to behave as action to toggle nav drawer
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
if (savedInstanceState == null) {
// on first time display view for first nav item
selectItem(0);
}
}
#Override
public void OnNewImageListenerBitmap(final Bitmap Image) {
if (Thread.currentThread().getName() == "main") {
Augmented_Reality_Fragment.UpdateImages(Image);
}
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
if (Augmented_Reality_Fragment != null) {
Augmented_Reality_Fragment.UpdateImages(Image);
}
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
// to change up caret
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
// navigation drawer click listener
private class DrawerItemClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
private void selectItem(int position) {
Fragment fragment = null;
SharedPreferences.Editor editor = sharedpreferences.edit();
switch (position) {
case 0:
editor.putBoolean("Image_Listener", false);
editor.commit();
if (Main_Screen_Fragment == null) {
Main_Screen_Fragment = new Main_Screen();
}
fragment = Main_Screen_Fragment;
Current_Page = 1;
NewPage = true;
break;
case 1:
editor.putBoolean("Image_Listener", true);
editor.commit();
if (Augmented_Reality_Fragment == null) {
Augmented_Reality_Fragment = new Augmented_Reality();
}
fragment = new Augmented_Reality();
Current_Page = 2;
NewPage = true;
break;
case 2:
editor.putBoolean("Image_Listener", false);
editor.commit();
if (Mission_Data_Fragment == null) {
Mission_Data_Fragment = new Mission_Data();
}
fragment = Mission_Data_Fragment;
Current_Page = 3;
NewPage = true;
break;
case 3:
editor.putBoolean("Image_Listener", false);
editor.commit();
if (Settings_Fragment == null) {
Settings_Fragment = new Settings();
}
fragment = Settings_Fragment;
Current_Page = 4;
NewPage = true;
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(mNavigationDrawerItemTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
#Override
public void setTitle(CharSequence title) {
mTitle = title;
getSupportActionBar().setTitle(mTitle);
}
#Override
public void onBackPressed() {
}
}
Thread on which Updated Interface:
if (Listener != null) {
System.out.println("Listener Found");
Image_data = BitmapFactory.decodeByteArray(tmp, 0, tmp.length);
System.out.println("Image Created");
Listener.OnNewImageListenerBitmap(Image_data);
//sendMessage(Image_Flag.to_byte_array(Image_Sync_Flag));
System.out.println("Updated");
}
Ive been stuck on this problem for a while now and im not sure whats going wrong, Any help would be awesome :)
Steve
///////////................\\\\\\
Added Crash log
08-02 01:16:29.997 26346-26346/com.interface E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageDrawable(android.graphics.drawable.Drawable)' on a null object reference
at com.example.jaynesh.mobile_robot_interface.Fragments.Augmented_Reality.UpdateImages(Augmented_Reality.java:215)
at com.example.jaynesh.mobile_robot_interface.Main_Files.MainActivity$2.run(MainActivity.java:180)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

EDIT: In your case 1, be sure to use the fragment that you had set earlier
You have:
if (Augmented_Reality_Fragment == null) {
Augmented_Reality_Fragment = new Augmented_Reality();
}
fragment = new Augmented_Reality();
You should have:
if (Augmented_Reality_Fragment == null) {
Augmented_Reality_Fragment = new Augmented_Reality();
}
fragment = Augmented_Reality_Fragment;

showFragment is not a valid method

I'm trying to build a facebook login using this guide: https://developers.facebook.com/docs/android/scrumptious/authenticate, and I'm getting errors on showFragment (which isn't even a thing) and findFragmentByID which is saying the fragment I'm specifying is not valid (Trying the fragment class & the fragment layout doesn't work).
any help?
code:
import android.content.Context;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Menu;
import android.view.MenuItem;
import android.content.Intent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.Toast;
import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import static com.eren.valour.R.id.*;
public class MainScreen extends ActionBarActivity {
private static final int FBSPLASH = 0;
private static final int FBSELECTION = 1;
private static final int FBFRAGMENT_COUNT = FBSELECTION + 1;
private Fragment[] fragments = new Fragment[FBFRAGMENT_COUNT];
ImageButton fblogin;
Session session = Session.getActiveSession();
private boolean isResumed = false;
private UiLifecycleHelper uiHelper;
private Session.StatusCallback callback =
new Session.StatusCallback() {
#Override
public void call(Session session,
SessionState state, Exception exception) {
onSessionStateChange(session, state, exception);
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().setDisplayShowCustomEnabled(true);
setTitle("Valour");
setContentView(R.layout.activity_main_screen);
FragmentManager fm = getSupportFragmentManager();
fragments[FBSPLASH] = fm.findFragmentById(R.id.fragment_facebook_login_dialogue);
fragments[FBSELECTION] = fm.findFragmentById(R.id.FacebookLoginSelectFragment);
FragmentTransaction transaction = fm.beginTransaction();
for (int i = 0; i < fragments.length; i++) {
transaction.hide(fragments[i]);
}
transaction.commit();
getScreenRes();
}
#Override
public void onResume() {
super.onResume();
isResumed = true;
}
#Override
public void onPause() {
super.onPause();
isResumed = false;
}
public void getScreenRes() {
DisplayMetrics display = this.getResources().getDisplayMetrics();
int screenwidth = display.widthPixels;
double buttonheight = screenwidth / 2.66666667;
int screenheight = (int) Math.round(buttonheight);
// ImageButton serviceList = (ImageButton) findViewById(R.id.addservice);
// ViewGroup.LayoutParams servicelist = serviceList.getLayoutParams();
// servicelist.width = screenwidth;
// servicelist.height = screenheight;
//Get screen dimensions and define button variables
ImageButton redditLogin = (ImageButton) findViewById(R.id.redditLogin);
ViewGroup.LayoutParams reddit = redditLogin.getLayoutParams();
reddit.width = screenwidth;
reddit.height = screenheight;
ImageButton fbLogin = (ImageButton) findViewById(R.id.facebookLogin);
ViewGroup.LayoutParams fb = fbLogin.getLayoutParams();
fb.width = screenwidth;
fb.height = screenheight;
ImageButton instaLogin = (ImageButton) findViewById(R.id.instagramLogin);
ViewGroup.LayoutParams insta = instaLogin.getLayoutParams();
insta.width = screenwidth;
insta.height = screenheight;
ImageButton twitLogin = (ImageButton) findViewById(R.id.twitterLogin);
ViewGroup.LayoutParams twit = twitLogin.getLayoutParams();
twit.width = screenwidth;
twit.height = screenheight;
// set button size
instaLogin.setLayoutParams(insta);
fbLogin.setLayoutParams(fb);
twitLogin.setLayoutParams(twit);
redditLogin.setLayoutParams(reddit);
}
public void facebookLogin(View v) {
if (session == null) {
session = new Session(getApplicationContext());
}
Session.setActiveSession(session);
}
public void instagramLogin(View v) {
serviceIncomplete();
}
public void redditLogin(View v) {
serviceIncomplete();
}
public void twitterLogin(View v) {
serviceIncomplete();
}
private void onSessionStateChange(Session session, SessionState state, Exception exception) {
// Only make changes if the activity is visible
if (isResumed) {
FragmentManager manager = getSupportFragmentManager();
// Get the number of entries in the back stack
int backStackSize = manager.getBackStackEntryCount();
// Clear the back stack
for (int i = 0; i < backStackSize; i++) {
manager.popBackStack();
}
if (state.isOpened()) {
// If the session state is open:
// Show the authenticated fragment
showFragment(FBSELECTION, false);
} else if (state.isClosed()) {
// If the session state is closed:
// Show the login fragment
showFragment(FBSPLASH, false);
}
}
}
#Override
protected void onResumeFragments() {
super.onResumeFragments();
Session session = Session.getActiveSession();
if (session != null && session.isOpened()) {
// if the session is already open,
// try to show the selection fragment
showFragment(FBSELECTION, false);
} else {
// otherwise present the splash screen
// and ask the person to login.
showFragment(FBSPLASH, false);
}
}

showFragment is not a valid method
As see in Step 2: Wire up the authentication logic, creating showFragment method inside MainActivity class which is extending FragmentActivity.
So, showFragment method is not from facebook library you need to create it in MainScreen Activity for adding and removing fragments in current Activity.