Null Pointer Error when sending string via intent

Question

I want to send some string to another application, but I've got an Error is Null Pointer when I click buttonSave.

I have set Toast, the result is still an error. Is there another way to get the value in EditText?

Code :

@Nullable
@Override
public View onCreateView(....) {
    View view = ....;

    jadwalShubuh = view.findViewById(R.id.shubuhEditText);
    buttonSave = view.findViewById(R.id.saveButton);

    buttonSave.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            // Error : Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
            String getShubuh = jadwalShubuh.getText().toString().trim();

            Intent moveString = new Intent("com.package.my.application");
            moveString.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            moveString.putExtra("getShubuh", getShubuh);
            startActivity(moveString);
        }
    });

    actionLoad();
}

private void actionLoad() {
    // Call method findLocation when location != null
    findCityCountryName(location);
}

private void findCityCountryName(Location location) {
    // Another String to setCityName and setCountryName
    callingAPI(cityName, countryName);
}

private void callingAPI(String cityName, String countryName) {
    // Calling API code
    call.enqueue(new Callback<JsonObject>() {
        @Override
        public void onResponse(Call<JsonObject> call, Response<JsonObject> response) {
                        if (dateJSON.getString("readable").contentEquals(getMonthReadable)) {
                            String setShubuh = timingsJSON.getString("Fajr");
                            jadwalShubuh.setText(setShubuh);
                        }
    });
}

Logcat :

java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
    at com.package.my.application.pengaturanWaktu.sendData(pengaturanWaktu.java:250)
    at com.package.my.application.pengaturanWaktu.access$000(pengaturanWaktu.java:52)
    at com.package.my.application.pengaturanWaktu$1.onClick(pengaturanWaktu.java:94)

jadwalShubuh -- this edittext is null have you initialize this variable using findviewbyid?? — Neha Rathore
– Neha Rathore, Commented Nov 26, 2019 at 9:04
I have set Toast below String getShubuh, the result still an error like that — Muhammad Rafi Bahrur Rizki
– Muhammad Rafi Bahrur Rizki, Commented Nov 26, 2019 at 9:04
put your complete code here. That should help in resolving issue. As of now it seems to be you haven't initialized edit text using fineviewbyid. — Vinay Jayaram
– Vinay Jayaram, Commented Nov 26, 2019 at 9:06
@NehaRathore I have initialize by using findviewbyid, if i still write into the code i got an error the code too long from stackoverflow — Muhammad Rafi Bahrur Rizki
– Muhammad Rafi Bahrur Rizki, Commented Nov 26, 2019 at 9:06

Bentaye · Accepted Answer · 2019-11-26 09:58:40Z

1

When you're setting the Extra the value hasn't been set, as you're making the API call later than the initialization.

A quick fix could be to set the getShubuh String assignation after getting the value from the API :

if (dateJSON.getString("readable").contentEquals(getMonthReadable)) {
    String setShubuh = timingsJSON.getString("Fajr");
    jadwalShubuh.setText(setShubuh);
    getShubuh = setShubuh.trim();
}

And declare the getShubuh String as to be accessible to both methods, as you did with jadwalShubuh.

edited Nov 26, 2019 at 9:58

Bentaye

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answered Nov 26, 2019 at 9:39

PayToPwn

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1 Comment

Muhammad Rafi Bahrur Rizki Over a year ago

This is my mistake, i have set wrong findViewById EditText. Thank you for helping me a lot

Sarah Maher · Accepted Answer · 2019-11-26 09:25:09Z

0

your EditText refrence is null , make sure the id in R.id.shubuhEditText is correct , and you also have to cast it to EditText as jadwalShubuh = (EditText) view.findViewById(R.id.shubuhEditText)

answered Nov 26, 2019 at 9:25

Sarah Maher

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1 Comment

Muhammad Rafi Bahrur Rizki Over a year ago

This is my mistake, i have set wrong findViewById EditText. Thank you for helping me a lot

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