我尝试连接到mysql。
我在ligne上捕获了异常“ jObj = new JSONObject（json）;”通过使用“ pDialog.setMessage（” 7777“）;”因为当pDialog显示“ 7777”时应用程序已停止
这是我的课
JSONParser.java
package com.larig2.test;
/**
* Created by GNassro on 26/02/2018.
*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.ProgressDialog;
import android.util.Log;
import java.util.Date;
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params,ProgressDialog pDialog) {
// Making HTTP request
try {
// check for request method
if(method == "POST"){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}else if(method == "GET"){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
//convert byte-stream to character-stream.
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
try {
while((line = reader.readLine())!=null){
sb.append(line+"\n");
}
//close the input stream
is.close();
json = sb.toString();
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
// TODO Auto-generated catch block
pDialog.setMessage("7777");
pDialog.show();
e.printStackTrace();
}
} catch (IOException e) {
// TODO Auto-generated catch block
pDialog.setMessage("00000");
pDialog.show();
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
pDialog.setMessage("99999");
pDialog.show();
// TODO Auto-generated catch block
e.printStackTrace();
}
return jObj;
}
}
Signin_Client.java
package com.larig2.test;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.content.Intent;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.ArrayAdapter;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class Signin_Client extends AppCompatActivity {
// Progress Dialog
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
EditText inputNom;
EditText inputPrenom;
EditText inputCIN;
EditText inputJour;
Spinner inputMois;
EditText inputAnnee;
Spinner inputAdresse;
EditText inputTel;
EditText inputMail;
EditText inputPwd;
//attribute string
String nom;
String prenom;
String cin;
String jour;
String mois;
String annee;
String sexe;
String adresse;
String tel;
String mail;
String pwd;
String date;
// url to create new product
private static String url_create_product = "http://192.168.1.177/Karhabti/signup_client.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signin__activity_client);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
final Intent contactus = new Intent(this, Contactez_nous.class);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
startActivity(contactus);
}
});
//Spinner for Address Start ****
Spinner spinner = (Spinner) findViewById(R.id.adresse);
// Create an ArrayAdapter using the string array and a default spinner layout
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.Tunisia_State, R.layout.spinnerthem1);
// Specify the layout to use when the list of choices appears
// Apply the adapter to the spinner
adapter.setDropDownViewResource(R.layout.spinnerthem);
spinner.setAdapter(adapter);
//Spinner for Address End ****
//Spinner for Months Date Start ****
Spinner spinnerMonths = (Spinner) findViewById(R.id.mois);
// Create an ArrayAdapter using the string array and a default spinner layout
ArrayAdapter<CharSequence> adapterMonths = ArrayAdapter.createFromResource(this,
R.array.Mois_Date, R.layout.spinnerthem1);
// Specify the layout to use when the list of choices appears
// Apply the adapter to the spinner
adapterMonths.setDropDownViewResource(R.layout.spinnerthem);
spinnerMonths.setAdapter(adapterMonths);
//Spinner for Months Date End ****
//select input
inputNom = (EditText) findViewById(R.id.nom);
inputPrenom = (EditText) findViewById(R.id.prenom);
inputCIN = (EditText) findViewById(R.id.CIN);
inputJour = (EditText) findViewById(R.id.jour);
inputMois = (Spinner) findViewById(R.id.mois);
inputAnnee = (EditText) findViewById(R.id.annee);
inputAdresse = (Spinner) findViewById(R.id.adresse);
inputTel = (EditText) findViewById(R.id.tel);
inputMail = (EditText) findViewById(R.id.mail);
inputPwd = (EditText) findViewById(R.id.pwd);
}
public void signupClickC(View view) {
cin = inputCIN.getText().toString();
new CreateNewClient().execute();
}
/**
* Background Async Task to Create new product
* */
class CreateNewClient extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Signin_Activity_client.this);
pDialog.setMessage("Creation en cours ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("nomC", "Med"));
params.add(new BasicNameValuePair("prenomC", "Ali"));
params.add(new BasicNameValuePair("CIN", cin));
params.add(new BasicNameValuePair("date","1999-11/11" ));
params.add(new BasicNameValuePair("sexe", "h"));
params.add(new BasicNameValuePair("adresse", "gafsa"));
params.add(new BasicNameValuePair("tel", "556"));
params.add(new BasicNameValuePair("mail", "khhg"));
params.add(new BasicNameValuePair("psw", "kdlkdj"));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"POST", params, pDialog);
pDialog.setMessage("22222");
pDialog.show();
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
Intent i = new Intent(getApplicationContext(), ClientSpace.class);
startActivity(i);
// closing this screen
finish();
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
}
我的问题是如何解决此异常，尽管成功插入Mysql？
最佳答案
您应该在JsonPArser类中创建pDialog对象，而不是作为参数传递。
在JsonParser类中使用以下代码，并且不要同时使用两个prgressDialog。ProgressDialog pd = new ProgressDialog(context);progressDialog.setMessage(your message);