从onPostExecute

Question

获取如下错误

  

08-14 19：43：41.828：D / AndroidRuntime（31363）：关闭VM 08-14   19：43：41.833：E / AndroidRuntime（31363）：致命异常：主要08-14   19：43：41.833：E / AndroidRuntime（31363）：进程：com.example.ecmglogin，   PID：31363 08-14 19：43：41.833：E / AndroidRuntime（31363）：   java.lang.NullPointerException：尝试调用虚方法   ＆＃39; android.content.Context   android.content.Context.getApplicationContext（）＆＃39;在null对象上   参考08-14 19：43：41.833：E / AndroidRuntime（31363）：at   android.content.ContextWrapper.getApplicationContext（ContextWrapper.java:107）

Submitdata.java

public class Submitdata extends Activity{   

    public Submitdata() {
        super();
    }   


    public void m1(){
        new TestAsync().execute(issuem);    
    }


    public class TestAsync extends AsyncTask<IssueParametersModel, String, JSONObject>{

        private ProgressDialog nDialog;     
        Context context;



        @Override
        protected void onPreExecute() {     
            super.onPreExecute();               
        }       

        @Override
        protected JSONObject doInBackground(Datavalues... params) {


        //....
        }

        @Override
        protected void onPostExecute(JSONObject json) {

            try {
                if (json.getString(KEY_SUCCESS) != null) {

                    String res = json.getString(KEY_SUCCESS);

                    if(Integer.parseInt(res) == 1){                     

                        Intent upanel = new Intent(getApplicationContext(), NewActivity.class);
                        upanel.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);                     
                        startActivity(upanel);                      
                        finish();

                    }else{
                        nDialog.setMessage("Error");
                    }
                }
            } catch (JSONException e) {             
                e.printStackTrace();
            }
        }

    }   

}

SubmitIssueCompleted.java

package com.example.ecmglogin;

import java.util.HashMap;

public class SubmitIssueCompleted extends Activity {    

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.newlayout);
    }

}

newlayout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
</LinearLayout>

我在这一行收到错误

Intent upanel = new Intent(getApplicationContext(), NewActivity.class);