我正在做一个需要电子邮件验证的Android应用程序才能进一步移动。我有一个简单的edittext字段，用户输入他们的电子邮件并点击继续按钮。点击继续按钮我已将该电子邮件发送到服务器。我希望在后端电子邮件用户发送首先检查。如果电子邮件在已验证电子邮件的数据库中可用，则允许用户继续进行下一个活动，否则用户应该获得一些未验证其电子邮件的信息。为此我做了这个在我的Android应用程序java类
package fragment;
import android.app.Activity;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.example.user.timothysurvey.R;
import com.example.user.timothysurvey.activity.Introduction;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import pojo.Email;
import pojo.JSONParser;
/**
* A simple {@link Fragment} subclass.
*/
public class Ongoing extends Fragment {
Button proceed;
EditText email;
TextView surveyTitle;
String success;
private static final String url="http://192.168.0.123/survey/public/api/verifyemail";
public Ongoing() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v=inflater.inflate(R.layout.fragment_ongoing, container, false);
surveyTitle= (TextView) v.findViewById(R.id.surveyTitle);
email = (EditText) v.findViewById(R.id.email);
proceed= (Button) v.findViewById(R.id.proceed);
proceed.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(isConnected()) {
String emailAddress = email.getText().toString().trim();
String emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+";
if (emailAddress.matches("")) {
Toast.makeText(getContext(), "Please fill up all the fields", Toast.LENGTH_LONG).show();
} else {
if (emailAddress.matches(emailPattern)) {
new HttpAsyncTask().execute("http://192.168.0.123/survey/public/api/verifyemail");
} else
Toast.makeText(getContext(), "Invalid Email Address", Toast.LENGTH_LONG).show();
}
}
else {
Toast.makeText(getContext(), "Please check your internet connection", Toast.LENGTH_LONG).show();
}
}
});
return v;
}
private class HttpAsyncTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", email.getText().toString()));
JSONParser jParser = new JSONParser();
JSONObject json = jParser.makeHttpRequest(url, "POST", params);
try {
success = json.getString("success");
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
if(success.equals("Email verified. Please proceed with survey"))
Toast.makeText(getContext(), "Wait For a moment", Toast.LENGTH_LONG).show();
}
}
public boolean isConnected(){
ConnectivityManager connMgr = (ConnectivityManager) getActivity().getSystemService(Activity.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected())
return true;
else
return false;
}
}
这是我后端的PHP代码
<?php
use Illuminate\Http\Request;
/*
|--------------------------------------------------------------------------
| API Routes
|--------------------------------------------------------------------------
|
| Here is where you can register API routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| is assigned the "api" middleware group. Enjoy building your API!
|
*/
// url
// :: localhost/api/verifyemail/anish@gmail.com
// messages
// 1. No record in database
// 2. Admin has not verified your email
// 3. Email verified. Please proceed with survey
Route::get('verifyemail/{email}', function ($email) {
// first check whether user exist in database
$user = \App\SurveyUser::where('email', $email)->first();
// if user does not exist send error message
if (empty($user)) {
$user['error'] = 'No record in database';
} else {
if ($user->verified_by_admin) {
$user['success'] = 'Email verified. Please proceed with survey';
} else {
$user['error'] = 'Admin has not verified your email';
}
}
return $user;
// if exist check whether he is allowed to take survey or not
});
Route::post('verifyemail', function (Request $request) {
// check email
$email = $request->email;
$user = \App\SurveyUser::where('email', $email)->first();
if (empty($user)) {
$user['error'] = 'No record in database';
} else {
if ($user->verified_by_admin) {
$user['success'] = 'Email verified. Please proceed with survey';
} else {
$user['error'] = 'Admin has not verified your email';
}
}
return $user;
});
Route::get('/user', function (Request $request) {
return $request->user();
})->middleware('auth:api');
我没有从上面的代码中得到任何结果。有人请建议我以正确的方式实现我的目标。谢谢你提前
答案 0 :(得分：0)
定义全局字符串变量：
Button proceed;
EditText email;
TextView surveyTitle;
String success;
像这样更新HttpAsyncTask：
private class HttpAsyncTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", email.getText().toString()));
JSONParser jParser = new JSONParser();
JSONObject json = jParser.makeHttpRequest(url, "POST", params);
try {
success = json.getString("success");
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String result) {
if(success.equals("Email verified. Please proceed with survey"))
Toast.makeText(getContext(), "Wait For a moment", Toast.LENGTH_LONG).show();
}
}
最后像这样创建JSONParser类：
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
public JSONParser() {
}
public JSONObject getJSONFromUrl(final String url) {
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return jObj;
}
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
try {
if (method == "POST") {
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") {
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 (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return jObj;
} }