Android UnionPay pay Access Report Nullexception exception

package com.example.ex_example;import java.io.bytearrayoutputstream;import java.io.inputstream; import java.net.url;import java.net.urlconnection;import android.app.activity;import  android.app.alertdialog;import android.app.progressdialog;import android.content.dialoginterface; import android.os.handler;import android.os.message;import android.util.log;import  com.unionpay.uppayassistex;import com.unionpay.uppay.payactivity;public class unionpay  implements runnable{// public static final int plugin_valid = 0;//  public static final int PLUGIN_NOT_INSTALLED = -1;// public  static final int plugin_need_upgrade = 2;/*******************************************  * mmode parameter explanation:  "XX"  -  start UnionPay formal environment   "" " -  Connect UnionPay test environment   Test   card number: 6226440123456785 *  Password: 111101 *****************************************************************/private final  static String mMode =  "Rivate static final string tn_url_01";p  =  "HTTP://202.101.25.178:8080/SIM/GETTN";p rivate static progressdialog  mloadingdialog = null;private static activity activity;private static  Unionpay unionpay = new unionpay ();p Ublic static void unionpay (Activity  activity)  {unionpay.activity = activity;mloadingdialog = progressdialog.show ( Activity, // context "",  // title "is trying to get TN, please wait ...",  // messagetrue);  //   Whether the progress is indeterminate, this is only related to creating a progress bar/************************************************* *  Step 1: Start from the network, get the transaction serial number is TN  ************************************************/new thread (UnionPay). Start ();// //Payment amount   Order Amount// string orderamount =  "1533";// //// string merchantno =  "805920100000069";// //merchant Order number//  String orderNO =  "467934311";// //notification url// string backurl =  "http ://www.baidu.com ";// //signature key// string key = " 86AAB696FED90BC691A7AFE0B6A269AC ";//  //signature Field// string signcont =// merchantno+ "&" +orderno+ "&" +orderamount+ "&" + backurl+ "&" +KEY;// // LOG.E (", " "+signcont);//// string sign =  Md5.digest (Signcont);// // string sign = md5utils.generate (Signcont);// LOG.E ("" ,  "sign =  " +sign.length ());// string url =  "http://mpay.sinoqy.com : 6283/qyapi/trans/gettn "// + "? orderamount= "+orderamount// + " &merchantNO= "+merchantNO  +  "&orderno=" + orderno// +  "&backurl=" +backurl// +  "&Sign=" +  SIGN;//// LOG.E ("",  "" +url);//// //get Tn// httputils.get (This, url , new volleylistener ()  {////  @Override// public void onerrorresponse (volleyerror arg0)  {//  LOG.E (", " volleyerror=  "+arg0);// }////  @Override// public void onresponse (string arg0)  {// log.e (", " onresponse=  "+arg0);// }// });//}//  UnionPay Private static handler mhandler = new handler ()  {public void  Handlemessage (android.os.message msg)  { if  (mloadingdialog.isshowing ())  { Mloadingdialog.dismiss ();} string tn =  "";if  (msg.obj == null | |   (String)  msg.obj. Length ()  == 0)  {alertdialog.builder builder = new  alertdialog.builder (activity); Builder.settitle ("Error Prompt"); Builder.setmessage ("Network connection failed, please try again!"); Builder.setnegativebutton ("OK", New dialoginterface.onclickListener ()  {@Overridepublic  void onclick (Dialoginterface dialog,int which)  { Dialog.dismiss ();}}); Builder.create (). Show ();  else {tn =  (String)  msg.obj;/*************************************************  *  Step 2: Start the payment plugin via the UnionPay tool class  ************************************************/dostartunionpayplugin (activity,  tn, mmode);}}};/ /  UnionPay public static void dostartunionpayplugin (Activity activity, string tn,  string mode)  {log.e (", " Handlemessage "),// todo// orderinfo --order information is the transaction serial number, That is TN.  mode --  UnionPay Background Environmental identification, "00" will be launched in the formal environment of UnionPay,  "01" will be in the//  UnionPay test environment to initiate transactions Uppayassistex.startpaybyjar ( Activity, payactivity.class, null, null,tn, mode);} @Overridepublic  void run ()  {log.e ("",  "Run"); string tn = null;      inputstream is;       try  {          string url = tn_url_01;           url myurl = new url (URL);           urlconnection ucon = myurl.openconnection ();           ucon.setconnecttimeout (120000);           is = ucon.getinputstream ();           int i = -1;           bytearrayoutputstream baos = new bytearrayoutputstream ();           while  ((I = is.read ())  != -1)  {               baos.write (i);        &nbsP;  }          tn = baos.tostring ();           is.close ();           baos.close ();      } catch  (Exception e)  {          e.printstacktrace ();       }      message msg = mhandler.obtainmessage ();       msg.obj = tn;       Mhandler.sendmessage (msg);}}

This is my own integrated UnionPay payment, in

Package Com.example.ex_example;import Android.os.bundle;import Android.support.v7.app.appcompatactivity;import Android.view.view;public class Mainactivity extends Appcompatactivity {@Override protected void onCreate (Bundle sav        Edinstancestate) {super.oncreate (savedinstancestate);           Setcontentview (R.layout.activity_main);   public void Click (View v) {//Call Unionpay.unionpay (this); }}

The following exception occurred:

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Search for n long to find the problem: (Damn this file did not test)

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I hope you will pay attention.

Android UnionPay pay Access Report Nullexception exception