mercredi 6 janvier 2016

java.lang.IllegalArgumentException: the bind value at index 1 is null

I want to make a query and use the value entered by the user in the edittext as condition is the where clause. In database helper.java class: The query is the following:

Databasehelper.java:

public Cursor patientHisto ( ) {
        SQLiteDatabase db = this.getWritableDatabase();
        Cursor res = db.rawQuery (" select dateap,diagnostic,prestreatment from patients_table, appointments_table, examinations_table where patients_table.id = appointments_table.idp and appointments_table.idap = examinations_table.id_ap and ID = ?  order by name, familyname asc"  , new String[] {ExaminatFragment.value} );
        return res;
    }

In ExaminatFragment.java:

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
    View v = inflater.inflate(R.layout.fragment_examinat, parent, false);
    myDB = new DatabaseHelper(getActivity());

    id_p = (EditText)v.findViewById(R.id.id_p_text);

    String value = id_p.getText().toString();

    getPatHisto( );
    return v;
    }   


public void getPatHisto( ) {



    showhp.setOnClickListener(

            new View.OnClickListener() {

            @Override
            public void onClick(View v) {
              Cursor res = myDB.patientHisto();
            if (res.getCount() == 0){

            showMessage("Patient history", "No patient history found");
            return;

                    }


    StringBuffer buffer = new StringBuffer();
    while (res.moveToNext()){
                            buffer.append("Dateap:"+res.getString(0)+"\n");
                            buffer.append("Diagnostic:"+res.getString(1)+"\n");
                            buffer.append("Prestreatment:"+res.getString(2)+"\n\n");




                        }
    showMessage("Patient's history", buffer.toString());
                    }


                }
                );
                }


public void showMessage(String title, String Message){

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setCancelable(true);
        builder.setTitle(title);
        builder.setMessage(Message);
        builder.show();

    }

When running the application and clicking on the button it gives me the following error:

01-06 10:55:57.510: E/AndroidRuntime(1952): FATAL EXCEPTION: main
01-06 10:55:57.510: E/AndroidRuntime(1952): Process: com.example.appointapp, PID: 1952
01-06 10:55:57.510: E/AndroidRuntime(1952): java.lang.IllegalArgumentException: the bind value at index 1 is null
01-06 10:55:57.510: E/AndroidRuntime(1952):     at android.database.sqlite.SQLiteProgram.bindString(SQLiteProgram.java:164)
01-06 10:55:57.510: E/AndroidRuntime(1952):     at android.database.sqlite.SQLiteProgram.bindAllArgsAsStrings(SQLiteProgram.java:200)

Please help.. thank you in advance

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