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- package org.jcloarca.laboratorio2;
- import android.support.v7.app.AppCompatActivity;
- import android.os.Bundle;
- import android.util.Log;
- import android.view.View;
- import android.widget.Button;
- import android.widget.EditText;
- import android.widget.Toast;
- import com.android.volley.Request;
- import com.android.volley.Response;
- import com.android.volley.VolleyError;
- import com.android.volley.toolbox.JsonObjectRequest;
- import org.jcloarca.laboratorio2.volley.WebService;
- import org.json.JSONArray;
- import org.json.JSONObject;
- import java.util.HashMap;
- import java.util.Map;
- public class LoginActivity extends AppCompatActivity {
- private Button btnLogin;
- private EditText txtEmail, txtPassword;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_login);
- btnLogin = (Button)findViewById(R.id.btnLogin);
- txtEmail = (EditText)findViewById(R.id.txtEmail);
- txtPassword = (EditText)findViewById(R.id.txtPassword);
- btnLogin.setOnClickListener(new View.OnClickListener(){
- @Override
- public void onClick(View v) {
- Map<String, String> params = new HashMap<String, String>();
- params.put("correo", txtEmail.getText().toString());
- params.put("password", txtPassword.getText().toString());
- JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, WebService.autenticar, new JSONObject(params), new Response.Listener<JSONObject>() {
- @Override
- public void onResponse(JSONObject response) {
- try{
- JSONArray listaUsuarios = response.getJSONArray("user");
- if(listaUsuarios.length()>0){
- JSONObject user = listaUsuarios.getJSONObject(0);
- Toast.makeText(getApplicationContext(), "Bienvenido "+user.getString("nombreCompleto"), Toast.LENGTH_LONG).show();
- }else{
- Toast.makeText(getApplicationContext(), "Verifique sus credenciales.", Toast.LENGTH_LONG).show();
- }
- }catch(Exception ex){
- Log.e("Error: ",ex.getMessage());
- }
- }
- }, new Response.ErrorListener(){
- @Override
- public void onErrorResponse(VolleyError error){
- Log.e("Error: Response",error.getMessage());
- }
- });
- WebService.getInstance(v.getContext()).addToRequestQueue(request);
- }
- });
- }
- }
- 05-21 16:16:59.990 16961-16961/org.jcloarca.laboratorio2 E/AndroidRuntime: FATAL EXCEPTION: main
- Process: org.jcloarca.laboratorio2, PID: 16961
- java.lang.NullPointerException: println needs a message
- at android.util.Log.println_native_inner(Native Method)
- at android.util.Log.println_native(Log.java:290)
- at android.util.Log.e(Log.java:416)
- at org.jcloarca.laboratorio2.LoginActivity$1$2.onErrorResponse(LoginActivity.java:64)
- at com.android.volley.Request.deliverError(Request.java:598)
- at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:101)
- at android.os.Handler.handleCallback(Handler.java:739)
- at android.os.Handler.dispatchMessage(Handler.java:95)
- at android.os.Looper.loop(Looper.java:135)
- at android.app.ActivityThread.main(ActivityThread.java:5343)
- at java.lang.reflect.Method.invoke(Native Method)
- at java.lang.reflect.Method.invoke(Method.java:372)
- at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
- at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
- at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:115)
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