user3659746
Reputation: 17
NullPointerException in Android Fragment onCreateView
Hello I already read all similar questions/answers and I think I can be sure this has nothing to do with the selected theme!
I use now the Theme Light, so there should be no problem with the action bar nullpointer issue.
Here the exception:
05-21 09:54:47.076: E/AndroidRuntime(24459): FATAL EXCEPTION: main
05-21 09:54:47.076: E/AndroidRuntime(24459): Process: de.poetjan.powerconsumption, PID: 24459
05-21 09:54:47.076: E/AndroidRuntime(24459): java.lang.NullPointerException
05-21 09:54:47.076: E/AndroidRuntime(24459): at de.poetjan.powerconsumption.Verbrauch.onCreateView(Verbrauch.java:131)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.view.ViewPager.populate(ViewPager.java:1068)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.view.ViewPager.populate(ViewPager.java:914)
05-21 09:54:47.076: E/AndroidRuntime(24459): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436)
Here my Fragment Verbrauch.java;
package de.poetjan.powerconsumption;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import android.app.AlertDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.content.DialogInterface;
import android.net.ParseException;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;
public class Verbrauch extends Fragment {
private double ba;
private double ea;
private double zwischen;
// private AdView adView;
int mYear1;
int mMonth1;
int mDay1;
int mYear2;
int mMonth2;
int mDay2;
Button pickdate;
Button pickdate2;
Button berechnen;
ToggleButton month;
ToggleButton quarteryear;
ToggleButton halfyear;
ToggleButton year;
EditText dateDisplay1;
EditText dateDisplay2;
EditText kwhDisplay1;
EditText kwhDisplay2;
TextView textView5;
TextView textView6;
TextView textView50;
EditText editText5;
long diff;
int differ;
String fromDate;
String toDate;
String neuformatjahr1;
String neuformatmonat1;
String neuformattag1;
String neuformatjahr2;
String neuformatmonat2;
String neuformattag2;
String gesamt2o;
String gesamt1o;
private boolean mBool = false;
private boolean firststart = false;
final SimpleDateFormat df = new SimpleDateFormat("ddMMyyyy");
final DecimalFormat formatter = new DecimalFormat("#.##");
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.verbrauch, container, false);
getActivity();
//initialize ViewElements
boolean firstboot = getActivity().getSharedPreferences("BOOT_PREF", FragmentActivity.MODE_PRIVATE).getBoolean("firstboot", true);
dateDisplay1 = (EditText) rootView.findViewById(R.id.dateDisplay1);
dateDisplay2 = (EditText) rootView.findViewById(R.id.dateDisplay2);
kwhDisplay1 = (EditText) rootView.findViewById(R.id.kwhDisplay1);
kwhDisplay2 = (EditText) rootView.findViewById(R.id.kwhDisplay2);
editText5 = (EditText) rootView.findViewById(R.id.editText5);
textView5 = (TextView) rootView.findViewById(R.id.textView5);
textView6 = (TextView) rootView.findViewById(R.id.textView6);
textView50 = (TextView) rootView.findViewById(R.id.textView50);
pickdate = (Button) rootView.findViewById(R.id.pickDate);
pickdate2 = (Button) rootView.findViewById(R.id.pickDate2);
berechnen = (Button) rootView.findViewById(R.id.button10);
month = (ToggleButton) rootView.findViewById(R.id.button1);
quarteryear = (ToggleButton) rootView.findViewById(R.id.button2);
halfyear = (ToggleButton) rootView.findViewById(R.id.button3);
year = (ToggleButton) rootView.findViewById(R.id.button4);
// Bei erstem Start Anleitung zeigen
if (firstboot){
// 1) Launch the authentication activity
getActivity();
// 2) Then save the state
getActivity().getSharedPreferences("BOOT_PREF", FragmentActivity.MODE_PRIVATE)
.edit()
.putBoolean("firstboot", false)
.commit();
AlertDialog.Builder alertbox = new AlertDialog.Builder(getActivity());
alertbox.setMessage(R.string.firststart);
alertbox.setNeutralButton("Ok", new DialogInterface.OnClickListener() {
// click listener on the alert box
public void onClick(DialogInterface arg0, int arg1) {
// the button was clicked
}
});
// show it
alertbox.show();
}
// Button SET 1
pickdate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDatePicker1();
}}
);
// Button Abschlag berechnen
berechnen.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
if(textView5.getText().toString().isEmpty() || editText5.getText().toString().isEmpty()) {
Toast.makeText(getActivity(), R.string.beideeingebenab, Toast.LENGTH_SHORT).show();
}
else {
if (firststart == true) {
Double verbrauchsmenge = Double.valueOf(textView5.getText().toString().replace(',', '.'));
Double preisprok = Double.parseDouble(editText5.getText().toString().replace(',', '.'));
Double ERG = verbrauchsmenge * preisprok;
textView50.setText(formatter.format(ERG));
}
else {
Toast.makeText(getActivity(), R.string.calfirst, Toast.LENGTH_SHORT).show();
}
}
}
catch (NumberFormatException e) {}
}}
);
// Button SET 2
pickdate2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(dateDisplay1.getText().toString().matches("")) {
Toast.makeText(getActivity(), R.string.zuersteingeben, Toast.LENGTH_SHORT).show();
}
else {
showDatePicker2();
}
}}
);
// Button Month
month.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
Double a = Double.parseDouble(kwhDisplay1.getText().toString());
Double b = Double.parseDouble(kwhDisplay2.getText().toString());
if (a < b) {
getdaysbetween();
berechnemonat();
mBool = true;
month.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
halfyear.setChecked(mBool);
year.setChecked(mBool);
}
else {
Toast.makeText(getActivity(), R.string.musskleinersein, Toast.LENGTH_SHORT).show();
mBool = true;
month.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
halfyear.setChecked(mBool);
year.setChecked(mBool);
}
}
catch (NumberFormatException e) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
mBool = true;
month.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
halfyear.setChecked(mBool);
year.setChecked(mBool);
}
}}
);
//Button Vierteljahr
quarteryear.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
Double a = Double.parseDouble(kwhDisplay1.getText().toString());
Double b = Double.parseDouble(kwhDisplay2.getText().toString());
if (a < b) {
getdaysbetween();
berechnequarter();
mBool = true;
quarteryear.setChecked(mBool);
mBool = false;
month.setChecked(mBool);
halfyear.setChecked(mBool);
year.setChecked(mBool);
}
else {
Toast.makeText(getActivity(), R.string.musskleinersein, Toast.LENGTH_SHORT).show();
mBool = true;
quarteryear.setChecked(mBool);
mBool = false;
month.setChecked(mBool);
halfyear.setChecked(mBool);
year.setChecked(mBool);
}
}
catch (NumberFormatException e) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
mBool = true;
quarteryear.setChecked(mBool);
mBool = false;
month.setChecked(mBool);
halfyear.setChecked(mBool);
year.setChecked(mBool);
}
}}
);
//Button Halbjahr
halfyear.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
Double a = Double.parseDouble(kwhDisplay1.getText().toString());
Double b = Double.parseDouble(kwhDisplay2.getText().toString());
if (a < b) {
getdaysbetween();
berechnehalf();
mBool = true;
halfyear.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
month.setChecked(mBool);
year.setChecked(mBool);
}
else {
Toast.makeText(getActivity(), R.string.musskleinersein, Toast.LENGTH_SHORT).show();
mBool = true;
halfyear.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
month.setChecked(mBool);
year.setChecked(mBool);
}
}
catch (NumberFormatException e) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
mBool = true;
halfyear.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
month.setChecked(mBool);
year.setChecked(mBool);
}
}}
);
//Button Jahr
year.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
Double a = Double.parseDouble(kwhDisplay1.getText().toString());
Double b = Double.parseDouble(kwhDisplay2.getText().toString());
if (a < b) {
getdaysbetween();
berechneyear();
mBool = true;
year.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
halfyear.setChecked(mBool);
month.setChecked(mBool);
}
else {
Toast.makeText(getActivity(), R.string.musskleinersein, Toast.LENGTH_SHORT).show();
mBool = true;
year.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
halfyear.setChecked(mBool);
month.setChecked(mBool);
}
}
catch (NumberFormatException e) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
mBool = true;
year.setChecked(mBool);
mBool = false;
quarteryear.setChecked(mBool);
halfyear.setChecked(mBool);
month.setChecked(mBool);
}
}}
);
return rootView;
}
// Methode zur Berechnung der kWh-Differenz im Zeitraum für Monat
private void berechnemonat(){
if (kwhDisplay1.getText().toString().isEmpty() || kwhDisplay2.getText().toString().isEmpty()) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
}
else if (dateDisplay1.getText().toString().isEmpty() || dateDisplay2.getText().toString().isEmpty()){
Toast.makeText(getActivity(), R.string.hintdateset, Toast.LENGTH_SHORT).show();
}
else {
ba = Double.valueOf(kwhDisplay1.getText().toString());
ea = Double.valueOf(kwhDisplay2.getText().toString());
zwischen = ((ea-ba)/differ)*30.41666666666667;
textView5.setText(String.valueOf(formatter.format(zwischen)));
}
}
//Methode zur Berechnung der kWh-Differenz im Zeitraum für vierteljahr
private void berechnequarter(){
if (kwhDisplay1.getText().toString().isEmpty() || kwhDisplay2.getText().toString().isEmpty()) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
}
else if (dateDisplay1.getText().toString().isEmpty() || dateDisplay2.getText().toString().isEmpty()){
Toast.makeText(getActivity(), R.string.hintdateset, Toast.LENGTH_SHORT).show();
}
else {
ba = Double.valueOf(kwhDisplay1.getText().toString());
ea = Double.valueOf(kwhDisplay2.getText().toString());
zwischen = ((ea-ba)/differ)*91.25;
textView5.setText(String.valueOf(formatter.format(zwischen)));
}
}
//Methode zur Berechnung der kWh-Differenz im Zeitraum für Halbjahr
private void berechnehalf(){
if (kwhDisplay1.getText().toString().isEmpty() || kwhDisplay2.getText().toString().isEmpty()) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
}
else if (dateDisplay1.getText().toString().isEmpty() || dateDisplay2.getText().toString().isEmpty()){
Toast.makeText(getActivity(), R.string.hintdateset, Toast.LENGTH_SHORT).show();
}
else {
ba = Double.valueOf(kwhDisplay1.getText().toString());
ea = Double.valueOf(kwhDisplay2.getText().toString());
zwischen = ((ea-ba)/differ)*182.5;
textView5.setText(String.valueOf(formatter.format(zwischen)));
}
}
//Methode zur Berechnung der kWh-Differenz im Zeitraum für Jahr
private void berechneyear(){
if (kwhDisplay1.getText().toString().isEmpty() || kwhDisplay2.getText().toString().isEmpty()) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
}
else if (dateDisplay1.getText().toString().isEmpty() || dateDisplay2.getText().toString().isEmpty()){
Toast.makeText(getActivity(), R.string.hintdateset, Toast.LENGTH_SHORT).show();
}
else {
ba = Double.valueOf(kwhDisplay1.getText().toString());
ea = Double.valueOf(kwhDisplay2.getText().toString());
zwischen = ((ea-ba)/differ)*365;
textView5.setText(String.valueOf(formatter.format(zwischen)));
}
}
// Methode zur Berechnung der Anzahl der Tage im Zeitraum
private void getdaysbetween(){
if(dateDisplay1.getText().toString().isEmpty() || dateDisplay2.getText().toString().isEmpty()) {
Toast.makeText(getActivity(), R.string.beideeingeben, Toast.LENGTH_SHORT).show();
}
else {
try {
fromDate = gesamt1o;
toDate = gesamt2o;
firststart = true;
try {
//Convert to Date
Date startDate = df.parse(gesamt1o);
Calendar c1 = Calendar.getInstance();
//Change to Calendar Date
c1.setTime(startDate);
//Convert to Date
Date endDate = df.parse(gesamt2o);
Calendar c2 = Calendar.getInstance();
//Change to Calendar Date
c2.setTime(endDate);
//get Time in milli seconds
long ms1 = c1.getTimeInMillis();
long ms2 = c2.getTimeInMillis();
//get difference in milli seconds
diff = ms2 - ms1;
} catch (ParseException e) {
e.printStackTrace();
} catch (java.text.ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//Find number of days by dividing the mili seconds
int diffInDays = (int) (diff / (24 * 60 * 60 * 1000));
differ = diffInDays;
}
catch (NumberFormatException e) {
Toast.makeText(getActivity(), getActivity().getResources().getString(R.string.err), Toast.LENGTH_SHORT).show();
}
}
}
// Zeige DatePickerFragment1
private void showDatePicker1() {
DatePickerFragment date = new DatePickerFragment();
/**
* Set Up Current Date Into dialog
*/
Calendar calender = Calendar.getInstance();
Bundle args = new Bundle();
args.putInt("year", calender.get(Calendar.YEAR));
args.putInt("month", calender.get(Calendar.MONTH));
args.putInt("day", calender.get(Calendar.DAY_OF_MONTH));
date.setArguments(args);
/**
// * Set Call back to capture selected date
// */
date.setCallBack(ondate);
date.show(getChildFragmentManager(), "Date Picker");
}
OnDateSetListener ondate = new OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
mYear1 = year;
mMonth1 = monthOfYear;
mDay1 = dayOfMonth;
neuformatjahr1 = String.valueOf(mYear1);
if (mMonth1+1 < 10){
neuformatmonat1 = "0"+ String.valueOf(mMonth1+1);
}
else {neuformatmonat1 = String.valueOf(mMonth1+1);}
if (mDay1 < 10){
neuformattag1 = "0"+ String.valueOf(mDay1);
}
else {neuformattag1 =String.valueOf(mDay1);}
gesamt1o = neuformattag1+neuformatmonat1+neuformatjahr1;
String gesamt1 = neuformattag1+"."+neuformatmonat1+"."+neuformatjahr1;
dateDisplay1.setText(gesamt1);
}
};
//Zeige DatePickerFragment2
private void showDatePicker2() {
DatePickerFragment date = new DatePickerFragment();
/**
* Set Up Current Date Into dialog
*/
Calendar calender = Calendar.getInstance();
Bundle args = new Bundle();
args.putInt("year", calender.get(Calendar.YEAR));
args.putInt("month", calender.get(Calendar.MONTH));
args.putInt("day", calender.get(Calendar.DAY_OF_MONTH));
date.setArguments(args);
/**
* Set Call back to capture selected date
*/
date.setCallBack(ondate2);
date.show(getChildFragmentManager(), "Date Picker");
}
OnDateSetListener ondate2 = new OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
mYear2 = year;
mMonth2 = monthOfYear;
mDay2 = dayOfMonth;
neuformatjahr2 = String.valueOf(mYear2);
if (mMonth2+1 < 10){
neuformatmonat2 = "0"+ String.valueOf(mMonth2+1);
}
else {neuformatmonat2 = String.valueOf(mMonth2+1);}
if (mDay2 < 10){
neuformattag2 = "0"+ String.valueOf(mDay2);
}
else{neuformattag2 =String.valueOf(mDay2);}
gesamt2o = neuformattag2+neuformatmonat2+neuformatjahr2;
String gesamt2 = neuformattag2+"."+neuformatmonat2+"."+neuformatjahr2;
dateDisplay2.setText(gesamt2);
}
};
}
Upvotes: 0
Views: 939
Answers (3)
prince_sachdeva
Reputation: 190
I think Your Button berechnen is null. When you are setting onClickListener put a null check before this. And You are not able to get reference of this from XML file .
Upvotes: 2
nizammoidu
Reputation: 2114
you are trying to access the activity in onCreateView of fragment which mostly cause NPE, try moving the getActivity() stuff to
onActivityCreated(Bundle savedInstanceState)
read more about fragment life cycle and activity life cycle
Upvotes: 0
AndyRoid
Reputation: 5067
Looks like you might need to add a onCreate() method try adding:
protected void onCreate (Bundle savedInstanceState)
{
super.onCreate (savedInstanceState);
setContentView (R.layout.name_of_your_fragment_xml);
//add fragment
.....
}
Upvotes: 0
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