java.lang.null pointer exception on opening the alert dialog for password in androidchange

Question

While creating the android app in user profile when user click on password edit text the pop should be displayed I have implemented it but when i click on edit text It is giving me the below error. I have googled it but not found any useful solution. Please can you tell I am attaching the code :

java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources$Theme android.content.Context.getTheme()' on a null object reference at android.app.AlertDialog.resolveDialogTheme(AlertDialog.java:222) at android.app.AlertDialog$Builder.(AlertDialog.java:452) at com.example.admin.avisar.UserProfile$2.onClick(UserProfile.java:71) at android.view.View.performClick(View.java:5612) at android.view.View$PerformClick.run(View.java:22285) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6123) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757) 06-01 12:35:00.558 1563-5452/? E/ActivityManager: Sending non-protected broadcast com.motorola.motocare.INTENT_TRIGGER from system 4237:com.motorola.process.system/1000 pkg com.motorola.motgeofencesvc java.lang.Throwable at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:18226) at com.android.server.am.ActivityManagerService.broadcastIntent(ActivityManagerService.java:18826) at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:512) at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2906) at android.os.Binder.execTransact(Binder.java:565)

code here







    package com.example.admin.avisar;

import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.example.admin.avisar.network.CompletionListener;
import com.example.admin.avisar.network.NetworkTask;
import com.example.admin.avisar.network.Post_URL;
import com.example.admin.avisar.network.Responce;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public class UserProfile extends AppCompatActivity implements CompletionListener{
    EditText name,mobno,email,add,accid,pass,yeared;
    Button svebtn;
    ProgressDialog progressDialog;
    private NetworkTask networkTask;
    Context context;
    String uid;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_user_profile);
        ActionBar actionBar = getSupportActionBar();
        actionBar.setTitle("My Profile");
        actionBar.setDisplayHomeAsUpEnabled(true);

        name = (EditText)findViewById(R.id.name);
        mobno = (EditText)findViewById(R.id.mobno);
        email = (EditText)findViewById(R.id.email);
        add = (EditText)findViewById(R.id.add);
        accid = (EditText)findViewById(R.id.id);
        pass = (EditText)findViewById(R.id.pass);
        yeared = (EditText)findViewById(R.id.year);
        svebtn = (Button)findViewById(R.id.svebtn);
        userProfileWebService();
        svebtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                userProfileUpdate();
            }
        });

        pass.setOnClickListener(new View.OnClickListener() {
            String newpass="";
            String confirmpass="";
            @Override
            public void onClick(View view) {
                AlertDialog.Builder alert = new AlertDialog.Builder(UserProfile.this);
                alert.setTitle("change password"); //Set Alert dialog title here
                final EditText newpassed = new EditText(context);
                newpassed.setHint("New password");
                alert.setView(newpassed);

                final EditText confirmpassed = new EditText(context);
                confirmpassed.setHint("Confirm password");
                alert.setView(confirmpassed);

                alert.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        if(newpassed.length()==0){
                            newpassed.requestFocus();
                            newpassed.setError("FIELD CANNOT BE EMPTY");
                             newpass = confirmpassed.getEditableText().toString();
                        }else if (confirmpassed.length()==0) {
                            confirmpassed.requestFocus();
                            confirmpassed.setError("FIELD CANNOT BE EMPTY");
                             confirmpass = confirmpassed.getEditableText().toString();
                        }else if(confirmpass==newpass){
                            passwordwebservice(newpassed);

                        }else{
                            confirmpassed.setError("confirm password doesnot match");
                        }



                            // Toast.makeText(context, srt, Toast.LENGTH_LONG).show();

                    } // End of onClick(DialogInterface dialog, int whichButton)
                }); //End of alert.setPositiveButton
                alert.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        // Canceled.
                        dialog.cancel();
                    }
                }); //End of alert.setNegativeButton
                AlertDialog alertDialog = alert.create();
                alertDialog.show();
            }
        });

    }

    private void passwordwebservice(EditText newpassed){
        progressDialog = new ProgressDialog(this);
        progressDialog.setMessage("Loading");
        progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        progressDialog.setIndeterminate(true);
        progressDialog.setProgress(0);
        progressDialog.show();
        progressDialog.setCanceledOnTouchOutside(false);
        networkTask = new NetworkTask(this,this,false);
        String newpass = newpassed.getEditableText().toString();
        List<NameValuePair> params =new ArrayList<>();
        params.add(new BasicNameValuePair("userid",uid));
        params.add(new BasicNameValuePair("password",newpass));
        params.add(new BasicNameValuePair("userid",uid));
        networkTask.execute(params, Post_URL.URL_update_password, 3);
    }
    //userprofile view webservice
    private void userProfileWebService(){
        progressDialog = new ProgressDialog(this);
        progressDialog.setMessage("Loading");
        progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        progressDialog.setIndeterminate(true);
        progressDialog.setProgress(0);
        progressDialog.show();
        progressDialog.setCanceledOnTouchOutside(false);
        networkTask = new NetworkTask(this,this,false);

        List<NameValuePair> params =getRequestParams();
        networkTask.execute(params, Post_URL.URL_Profile, 1);
    }
    //parameter passing for userprofile webservice
    private List<NameValuePair> getRequestParams() {

        SharedPreferences sharedPreferences = getSharedPreferences("A", Context.MODE_PRIVATE);
        uid = sharedPreferences.getString("user_id","abc");
        Log.e("TAG",uid);
        List<NameValuePair> param1 = new ArrayList<NameValuePair>();
        param1.add(new BasicNameValuePair("userid", uid));
        return param1;
    }

    private void userProfileUpdate(){
        progressDialog = new ProgressDialog(this);
        progressDialog.setMessage("Loading");
        progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        progressDialog.setIndeterminate(true);
        progressDialog.setProgress(0);
        progressDialog.show();
        progressDialog.setCanceledOnTouchOutside(false);
        networkTask = new NetworkTask(this,this,false);

        List<NameValuePair> params =getRequestParamsupdate();
        networkTask.execute(params, Post_URL.URL_update_profile, 2);
    }

private List<NameValuePair> getRequestParamsupdate(){
    String username = name.getText().toString();
    String mno = mobno.getText().toString();
    String mail = email.getText().toString();
    String address = add.getText().toString();
    String accout_id = accid.getText().toString();
  //  String  password= pass.getText().toString();
    String yearString = yeared.getText().toString();
    List<NameValuePair> pairs = new ArrayList<>();
    pairs.add(new BasicNameValuePair("username",username));
    pairs.add(new BasicNameValuePair("mobno",mno));
    pairs.add(new BasicNameValuePair("email",mail));
    pairs.add(new BasicNameValuePair("add",address));
    pairs.add(new BasicNameValuePair("userid",accout_id));
  //  pairs.add(new BasicNameValuePair("password",password));
    pairs.add(new BasicNameValuePair("year",yearString));
    return  pairs;
}
//user profile response handle
    private void handleUserProfileResponse(JSONObject serverResponse){
        int success=0;
        try{
            success = serverResponse.getInt(Responce.TAG_SUCCESS);
            if(success==1){
                progressDialog.dismiss();

                //parsing the data

                JSONArray user_profile = serverResponse.getJSONArray("user_details");
                for(int i =0 ;i<user_profile.length();i++){
                    String  name1 = user_profile.getJSONObject(i).getString("username");
                    String  mno = user_profile.getJSONObject(i).getString("mobno");
                    //Log.e("TAG",name1);
                    String  mail = user_profile.getJSONObject(i).getString("email");
                    String  address = user_profile.getJSONObject(i).getString("add");
                    String  accountid = user_profile.getJSONObject(i).getString("userid");
                    String  password = user_profile.getJSONObject(i).getString("password");
                    String  year = user_profile.getJSONObject(i).getString("year");
                    //set data to textview
                    name.setText(name1);
                    mobno.setText(mno);
                    email.setText(mail);
                    add.setText(address);
                    accid.setText(accountid);
                    pass.setText(password);
                    yeared.setText(year);

                }
            }
            else{
                progressDialog.dismiss();
                Toast.makeText(UserProfile.this, serverResponse.getString(Responce.TAG_MESSAGE), Toast.LENGTH_LONG).show();
            }

        }catch (JSONException e){

        }
    }

    private void handleUserProfileUpdateResponse(JSONObject serverResponse){
        int success =0;
        try{
            success = serverResponse.getInt(Responce.TAG_SUCCESS);
            if (success ==1){
                progressDialog.dismiss();
                Toast.makeText(UserProfile.this, serverResponse.getString(Responce.TAG_MESSAGE), Toast.LENGTH_LONG).show();
            }
            else{
                progressDialog.dismiss();
                Toast.makeText(UserProfile.this, serverResponse.getString(Responce.TAG_MESSAGE), Toast.LENGTH_LONG).show();
            }
        }catch(JSONException e)
        {

        }

    }
    private void handleUpdatePassResponse(JSONObject serverResponse){
        int success =0;
        try{
            success = serverResponse.getInt(Responce.TAG_SUCCESS);
            if (success ==1){
                progressDialog.dismiss();
                Toast.makeText(UserProfile.this, serverResponse.getString(Responce.TAG_MESSAGE), Toast.LENGTH_LONG).show();
            }
            else{
                progressDialog.dismiss();
                Toast.makeText(UserProfile.this, serverResponse.getString(Responce.TAG_MESSAGE), Toast.LENGTH_LONG).show();
            }
        }catch(JSONException e)
        {

        }
    }

    @Override
    public void onComplete(JSONObject serverResponse, int RESPONSE_IDENTIFIER_FLAG) throws JSONException {
        switch (RESPONSE_IDENTIFIER_FLAG){
            case 1:handleUserProfileResponse(serverResponse);
                break;
            case 2: handleUserProfileUpdateResponse(serverResponse);
                break;
            case 3:handleUpdatePassResponse(serverResponse);
            default:
                break;
        }

    }
}

score 0 · Answer 1 · answered Jun 01 '17 at 07:54

0

Pass activity instead of context in following line :

AlertDialog.Builder alert = new AlertDialog.Builder(context);

answered Jun 01 '17 at 07:54

R.R.M

780
4
10

Thank you I have tried it but still I am getting the same exception The app is getting unfortunately stop – pokales Jun 01 '17 at 08:13
Post you full activity code. I will try to solve your problem. – R.R.M Jun 01 '17 at 08:15
I have added the full code of activity plz help if you can – pokales Jun 01 '17 at 15:58
I think your context variable is null. Try to initialize your context variable or use getApplicationContext() instead. – R.R.M Jun 02 '17 at 05:42

java.lang.null pointer exception on opening the alert dialog for password in androidchange

1 Answers1