尝试在空对象引用调用虚拟方法android.text.Editable android.widget.EditText.getText（） [英] Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference

问题描述

我已经尝试了所有可能的情况，但没有得到解决，需要建议

 公共类WolfActivity扩展ActionBarActivity {   的EditText fname_ele,lname_ele,email_ele,phone_ele,pwd_ele,fax_ele,addr_ele,addr1_ele,city_ele,zip$c$c_ele,facility_ele,state_ele;    串FNAME，LNAME，电子邮件，电话，PWD，传真，地址，ADDR1，城市，邮编code，设施状态;
    Button按钮;
    AlertDialog alertDialog;    @覆盖
    保护无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;
        fname_ele =（EditText上）findViewById（R.id.first_name）;
        lname_ele =（EditText上）findViewById（R.id.last_name）;
        email_ele =（EditText上）findViewById（R.id.email）;
        按钮=（按钮）findViewById（R.id.submit_button）;
        phone_ele =（EditText上）findViewById（R.id.phone）;
        addr_ele =（EditText上）findViewById（R.id.address）;
        addr1_ele =（EditText上）findViewById（R.id.address1）;
        fax_ele =（EditText上）findViewById（R.id.fax）;
        facility_ele =（EditText上）findViewById（R.id.facility）;
        拉链code_ele =（EditText上）findViewById（R.id.zip）;
        city​​_ele =（EditText上）findViewById（R.id.city）;
        state_ele =（EditText上）findViewById（R.id.state）;    / *微调下拉=（微调）findViewById（R.id.state）;
        的String []项目=新的String [] {1，2，3};
        ArrayAdapter＆LT;串GT;适配器=新ArrayAdapter＆LT;串GT;（这一点，android.R.layout.simple_spinner_item，项目）;
        dropdown.setAdapter（适配器）; * /        button.setOnClickListener（新View.OnClickListener（）{
        @覆盖
        公共无效的onClick（视图v）{
            。FNAME = fname_ele.getText（）的toString（）;
            LNAME = lname_ele.getText（）的toString（）。
            。电子邮件= email_ele.getText（）的toString（）;
            PWD = pwd_ele.getText（）的toString（）。
            。手机= phone_ele.getText（）的toString（）;
            地址= addr_ele.getText（）的toString（）。
            。ADDR1 = addr1_ele.getText（）的toString（）;
            传真= fax_ele.getText（）的toString（）。
            。设施= facility_ele.getText（）的toString（）;
            。拉链code =拉链code_ele.getText（）的toString（）;
            。城市= city_ele.getText（）的toString（）;
            。状态= state_ele.getText（）的toString（）;            Log.d（电子邮件，电子邮件）;
            如果（！isValidEmail（电子邮件））{                Toast.makeText（WolfActivity.this，输入有效的电子邮件，Toast.LENGTH_SHORT）.show（）;
            }其他
                新signmeup（）执行（）;
        }
    }）;}
@覆盖
公共布尔onCreateOptionsMenu（菜单菜单）{
//充气菜单;如果是present这增加了项目操作栏。
    。getMenuInflater（）膨胀（R.menu.main，菜单）;
    返回true;
}@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
    //处理动作栏项目点击这里。操作栏会
    //自动处理上点击主页/向上按钮，只要
    //你在AndroidManifest.xml中指定一个父活动。
    INT ID = item.getItemId（）;    // noinspection SimplifiableIfStatement
    如果（ID == R.id.action_settings）{
        返回true;
    }    返回super.onOptionsItemSelected（项目）;
}私人布尔isValidEmail（字符串email）{
    字符串EMAIL_PATTERN =^ [_ A-ZA-Z0-9  -  \\\\ +] +（\\\\ [_ A-ZA-Z0-9  - ] +）* @+[A-ZA-z0-9-] +（\\\\。[A-ZA-Z0-9] +）*（\\\\。[A-ZA-Z] {2}）$;
    模式模式= Pattern.compile（EMAIL_PATTERN）;
    匹配器匹配= pattern.matcher（电子邮件）;
    返回matcher.matches（）;
}类signmeup扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; {        私人ProgressDialog pDialog;
        JSONParser jsonParser =新JSONParser（）;        @覆盖
        在preExecute保护无效（）{
            super.on preExecute（）;
            pDialog =新ProgressDialog（WolfActivity.this）;
            pDialog.setMessage（感谢您的注册...）;
            pDialog.setIndeterminate（假）;
            pDialog.setCancelable（真）;        }        @覆盖
        保护字符串doInBackground（字符串...为arg0）{
            // TODO自动生成方法存根            //大厦参数
            清单＆LT;＆的NameValuePair GT; PARAMS =新的ArrayList＆LT;＆的NameValuePair GT;（）;
            params.add（新BasicNameValuePair（部分，用户））;
            params.add（新BasicNameValuePair（行动，新））;
            params.add（新BasicNameValuePair（FIRST_NAME，FNAME））;
            params.add（新BasicNameValuePair（姓氏，LNAME））;
            params.add（新BasicNameValuePair（电子邮件，电子邮件））;
            params.add（新BasicNameValuePair（手机，手机））;
            params.add（新BasicNameValuePair（传真传​​真））;
            params.add（新BasicNameValuePair（地址，地址））;
            params.add（新BasicNameValuePair（地址1，ADDR1））;
            params.add（新BasicNameValuePair（设施，设施））;
            params.add（新BasicNameValuePair（密码，PWD））;
            params.add（新BasicNameValuePair（ZIP，邮编code））;
            params.add（新BasicNameValuePair（城市，市））;            //获取JSON对象
            //注意，创建产品网址接受POST方法
            JSONObject的JSON = jsonParser.makeHtt prequest（http://eastendwebsolutions.com/wf/ws/，GET，则params）;            Log.d（名，FNAME）;
            Log.d（姓，LNAME）;
            Log.d（电子邮件，电子邮件）;
            //检查日志猫响应
            Log.d（创建回应，json.toString（））;            //检查成功标记
           尝试{
                字符串成功= json.getString（成功）;                如果（电子邮件= NULL＆安培;！成功==真）{                    Toast.makeText（WolfActivity.this，特殊照顾电子邮件发布..
                            Toast.LENGTH_SHORT）.show（）;                }其他{                }
            }赶上（JSONException E）{
                e.printStackTrace（）;
            }            返回null;
        }        @燮pressWarnings（德precation）
        // @覆盖
        保护无效onPostExecute（字符串FILE_URL）{            如果（pDialog.isShowing（））{
                pDialog.dismiss（）;
            }
            AlertDialog.Builder建设者=新AlertDialog.Builder（WolfActivity.this）;
            builder.setTitle（信息）;
            builder.setMessage（你已经订阅了HHI假期目录通讯录检查电子邮件，以确认。）;
            builder.setIcon（R.drawable.app_icon）;
            builder.create（）显示（）。        }
    }
}
 

解决方案

您有12 的EditText 宣布，但已初始化，11

您忘了初始化 pwd_ele

I have tried all possible cases but not solved , Need suggestions

public class WolfActivity extends ActionBarActivity {

   EditText fname_ele,lname_ele,email_ele,phone_ele,pwd_ele,fax_ele,addr_ele,addr1_ele,city_ele,zipcode_ele,facility_ele,state_ele;

    String fname,lname,email,phone,pwd,fax,addr,addr1,city,zipcode,facility,state;
    Button button;
    AlertDialog alertDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        fname_ele=(EditText) findViewById(R.id.first_name);
        lname_ele=(EditText) findViewById(R.id.last_name);
        email_ele=(EditText) findViewById(R.id.email);
        button=(Button) findViewById(R.id.submit_button);
        phone_ele=(EditText) findViewById(R.id.phone);
        addr_ele=(EditText) findViewById(R.id.address);
        addr1_ele=(EditText) findViewById(R.id.address1);
        fax_ele=(EditText) findViewById(R.id.fax);
        facility_ele=(EditText) findViewById(R.id.facility);
        zipcode_ele=(EditText) findViewById(R.id.zip);
        city_ele=(EditText) findViewById(R.id.city);
        state_ele=(EditText) findViewById(R.id.state);

    /* Spinner dropdown = (Spinner)findViewById(R.id.state);
        String[] items = new String[]{"1", "2", "3" };
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, items);
        dropdown.setAdapter(adapter);*/

        button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            fname=fname_ele.getText().toString();
            lname=lname_ele.getText().toString();
            email=email_ele.getText().toString();
            pwd=pwd_ele.getText().toString();
            phone=phone_ele.getText().toString();
            addr=addr_ele.getText().toString();
            addr1=addr1_ele.getText().toString();
            fax=fax_ele.getText().toString();
            facility=facility_ele.getText().toString();
            zipcode=zipcode_ele.getText().toString();
            city=city_ele.getText().toString();
            state=state_ele.getText().toString();

            Log.d("Email",email);
            if (!isValidEmail(email)) {

                Toast.makeText(WolfActivity.this, "Enter valid email", Toast.LENGTH_SHORT).show();
            } else
                new signmeup().execute();
        }
    });

}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

private boolean isValidEmail(String email) {
    String EMAIL_PATTERN = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"+"[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
    Pattern pattern = Pattern.compile(EMAIL_PATTERN);
    Matcher matcher = pattern.matcher(email);
    return matcher.matches();
}

class signmeup extends AsyncTask<String, String, String> {

        private ProgressDialog pDialog;
        JSONParser jsonParser = new JSONParser();

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(WolfActivity.this);
            pDialog.setMessage("Thanks for your Sign up...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);

        }

        @Override
        protected String doInBackground(String... arg0) {
            // TODO Auto-generated method stub

            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("section","user"));
            params.add(new BasicNameValuePair("action","new"));
            params.add(new BasicNameValuePair("first_name",fname));
            params.add(new BasicNameValuePair("last_name",lname));
            params.add(new BasicNameValuePair("email",email));
            params.add(new BasicNameValuePair("phone",phone));
            params.add(new BasicNameValuePair("fax",fax));
            params.add(new BasicNameValuePair("address",addr));
            params.add(new BasicNameValuePair("address1",addr1));
            params.add(new BasicNameValuePair("facility",facility));
            params.add(new BasicNameValuePair("password",pwd));
            params.add(new BasicNameValuePair("zip",zipcode));
            params.add(new BasicNameValuePair("city",city));

            // getting JSON Object
            // Note that create product url accepts POST method
            JSONObject json = jsonParser.makeHttpRequest("http://eastendwebsolutions.com/wf/ws/", "GET", params);

            Log.d("First Name",fname);
            Log.d("Last Name",lname);
            Log.d("Email",email);
            // check log cat for response
            Log.d("Create Response", json.toString());

            // check for success tag
           try {
                String success = json.getString("success");

                if (email != null & success == "true") {

                    Toast.makeText(WolfActivity.this, "Youre Email Posted..",
                            Toast.LENGTH_SHORT).show();

                } else {

                }
            } catch (JSONException e) {
                e.printStackTrace();
            }

            return null;
        }

        @SuppressWarnings("deprecation")
        //@Override
        protected void onPostExecute(String file_url) {

            if(pDialog.isShowing()){
                pDialog.dismiss();
            }
            AlertDialog.Builder builder=new AlertDialog.Builder(WolfActivity.this);
            builder.setTitle("Info");
            builder.setMessage("You have been subscribed to the HHI Vacation Directory Mailing List. Check email to confirm.");
            builder.setIcon(R.drawable.app_icon);
            builder.create().show();

        }
    }
}

解决方案

You have 12 EditText declared but you've initialized 11

You forgot to initialize pwd_ele

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