当用户注册到应用
时，我收到此异常 02-14 19:27:35.109 26763-26763/application.example.com.sabintern
W/System.err: org.json.JSONException: End of input at character 0 of
02-14 19:27:35.109 26763-26763/application.example.com.sabintern
W/System.err: at
org.json.JSONTokener.syntaxError(JSONTokener.java:449)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern
W/System.err: at
org.json.JSONTokener.nextValue(JSONTokener.java:97)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern
W/System.err: at org.json.JSONArray.<init>(JSONArray.java:92)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern
W/System.err: at org.json.JSONArray.<init>(JSONArray.java:108)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern
W/System.err: at
application.example.com.sabintern.Activities.SignUpActivity$3.onResponse(SignUpActivity.java:118)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern
W/System.err: at application.example.com.sabintern.Activities.SignUpActivity$3.onResponse(SignUpActivity.java:112)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:30)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at android.os.Handler.handleCallback(Handler.java:751)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at android.os.Looper.loop(Looper.java:154)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at android.app.ActivityThread.main(ActivityThread.java:6123)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at java.lang.reflect.Method.invoke(Native Method)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
02-14 19:27:35.110 26763-26763/application.example.com.sabintern
W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
和注册码是 package application.example.com.sabintern.Activities;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
import application.example.com.sabintern.AppController;
import application.example.com.sabintern.Database.SQLiteHandler;
import application.example.com.sabintern.R;
import application.example.com.sabintern.ServerConfig;
import application.example.com.sabintern.SessionManager;
/**
* Created by Dell on 03-12-2017.
*/
public class SignUpActivity extends AppCompatActivity {
private static final String TAG = SignUpActivity.class.getSimpleName();
EditText userName;
EditText userMobile;
EditText userEmail;
Button signUpOTP;
TextView alreadyUser;
private ProgressDialog pDialog;
private SessionManager session;
private SQLiteHandler db;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_up);
signUpOTP = findViewById(R.id.sign_up_otp);
alreadyUser = findViewById(R.id.already_user);
userName = findViewById(R.id.sign_up_full_name);
userMobile = findViewById(R.id.signup_contact_no);
userEmail = findViewById(R.id.sign_up_mail);
alreadyUser.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent userIntent = new Intent(SignUpActivity.this, LoginActivity.class);
startActivity(userIntent);
}
});
pDialog = new ProgressDialog(this);
pDialog.setCancelable(false);
session = new SessionManager(getApplicationContext());
db = new SQLiteHandler(getApplicationContext());
if (session.isLoggedIn()) {
Intent intent = new Intent(SignUpActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
signUpOTP.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String name = userName.getText().toString().trim();
String mobile = userMobile.getText().toString().trim();
String email = userEmail.getText().toString().trim();
if (!name.isEmpty() && !mobile.isEmpty() && !email.isEmpty()) {
registerUser(name, email, mobile);
} else {
Toast.makeText(getApplicationContext(),
"Please enter your details!", Toast.LENGTH_LONG)
.show();
}
}
});
}
private void registerUser(final String name, final String email, final String mobile) {
String tag_string_req = "req_register";
pDialog.setMessage("Registering ...");
showDialog();
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
final StringRequest jsonArrayRequest = new StringRequest(Request.Method.POST, ServerConfig.URL_REGISTER, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Register Response: " + response.toString());
hideDialog();
try {
JSONArray jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
String id = jsonObject.getString("id");
String sname = jsonObject.getString("sname");
String email = jsonObject.getString("email");
String mobile = jsonObject.getString("mobile");
db.addUser(id, sname, email, mobile);
Intent intent = new Intent(
SignUpActivity.this,
MainActivity.class);
startActivity(intent);
finish();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}){
@Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("sname", name);
params.put("email", email);
params.put("mobile", mobile);
return params;
}
};
AppController.getInstance().addToRequestQueue(jsonArrayRequest, tag_string_req);
}
private void showDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hideDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
}