nullpointerexception

[Solved] Crashing android application [duplicate]

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public void onClick(View v) { AlertDialog.Builder a_builder = new AlertDialog.Builder(MainActivity.this); a_builder.setCancelable(false); a_builder.setTitle(“Alert !”); a_builder.setMessage(“do you want to call!!!”); a_builder.setPositiveButton(“Yes”, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { //handle the permission at start. if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) { //permission not granted, ask for permission return; } Intent callIntent = new Intent(Intent.ACTION_CALL); callIntent.setData(Uri.parse(“tel:0000000000”)); … Read more

[Solved] Best practise to handle Exception in thread “main” java.lang.NullPointerException from Bean class [duplicate]

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The nullpointer exception basic reason is that you are calling a method or variable from null variable where with null variable I mean a variable which is currently not holding reference of any object. So, the easy way to avoid it is assign that variable a refernce on which subsequent tasks can be called Now … Read more

[Solved] java.lang.NullPointerException while fetching value from EditText [duplicate]

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You can’t just instantiate your Activity and access the TextView members on it. This doesn’t make any sense: indoor_patient ins=new indoor_patient(); String webUrl = “http://10.0.3.2:8084/data_web/indoorPatient.jsp?sr_no=” + ins.sr_no.getText().toString() Instead you could figure out what your webUrl is in your onClick() method and pass in the complete URL as a parameter to the AsyncTask: submit.setOnClickListener(new View.OnClickListener() { … Read more

[Solved] setImageBitmap() Throwing nullPointerExceprion [duplicate]

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This is happening because you are calling below function setContentView(R.layout.activity_main); Views are not being initialized. Replcae your code with below code. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); try { BitmapFactory.Options bitmapOptions = new BitmapFactory.Options(); bitmapOptions.inSampleSize = 2; Bitmap imageBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.img, bitmapOptions); //imageView for referencig imageView of layout file ImageView imageView=(ImageView)findViewById(R.id.imageView1); imageView.setImageBitmap(imageBitmap); … Read more

[Solved] Cannot access an Object Reference instantiated by a sibling class

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So, blah defines an instance field called label but does not initialise it public abstract class Blah { protected JLabel label; } BlahChildOne initialises the label from Blah public class BlahChildOne extends Blah { public BlahChildOne() { label = new JLabel(); } } BlahChildTwo does not initialises the label from Blah, so it is still … Read more

[Solved] Dynamic inflating gives me a nullexception

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I’ve change the type of view to resolve the problem: I had… //View newGratLayout = LayoutInflater.from(getActivity()).inflate(R.layout.albaran_invoices_row, ll_invoices_layer, false); And now I had… RelativeLayout newGratLayout = (RelativeLayout)getActivity().getLayoutInflater().inflate(R.layout.albaran_invoices_row, null); //rl_albaran_invoices_row Thank for the people how try to help me. solved Dynamic inflating gives me a nullexception

[Solved] How do I fix NullPointerException and putting data into NatTable

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Your problem is that you have nested objects and you want to access them via reflection. That is not working! If your Student would only have one exam, you would need to change the propertyNames to this: String[] propertyNames = { “name”, “groupNumber”, “exam.name”, “exam.mark” }; and the definition of the data provider to this: … Read more

[Solved] NullPointerException object and arrays

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The method is lack of a modifier static It should be public static void main(String[] args) {. Change your code of class SearchComparison as follows and you will get the right result. public class SearchComparison { public static void main(String[] args) { StopWatch watch = new StopWatch(); ArrayUtilities utilities = new ArrayUtilities(); watch.start(); utilities.generateRandom(5); watch.stop(); … Read more

[Solved] My object is not null but I’m getting a NULL POINTER EXCEPTION

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In the stacktrace I see this: java.lang.NullPointerException: Attempt to invoke interface method ‘int java.util.List.size()’ on a null object reference The adapter is trying to call size() on a null List. Make sure your list searchResults is not null. solved My object is not null but I’m getting a NULL POINTER EXCEPTION

[Solved] NullPointerException Runtimer Error [closed]

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The problem is here: contentPane.add(textPane, BorderLayout.CENTER); At this point, you haven’t set up textPane. You set it up 4 lines later: textPane = new JTextPane(); textPane.setBackground(Color.DARK_GRAY); textPane.setEditable(false); textPane.setMargin(null); textPane.setContentType(“text/html”); You need to add it to the pane after initializing. Simple debugging would have fixed this problem for you. SO is not an appropriate place for … Read more

[Solved] Getting values of edit text error NULLPOINTER why? [closed]

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Try instead EditText edt1=(EditText)dialog.findViewById(R.id.EditTextNom); you need to look in the layout that is inflated for the Dialog. Right now it is looking in the one that was inflated for the Activity and, obviously, those Views don’t exist in that layout. 1 solved Getting values of edit text error NULLPOINTER why? [closed]

[Solved] Unexpected NullpointExpection inside a setter [duplicate]

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The title is still null when you are calling mAlertDialog dialog = new mAlertDialog(); dialog.setTheTitle(getActivity().getString(R.string.invalidTimeTitle)); so what you can do is public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.dialog_invalid_time, container, false); title = (TextView)view.findViewById(R.id.titleText); setTheTitle(getActivity().getString(R.string.invalidTimeTitle)); return view; } // call it mAlertDialog dialog = new mAlertDialog(); dialog.show(fm, “InvalidTime”); 2 solved … Read more