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LoginActivity.java
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LoginActivity.java
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package com.example.testapplication;
import java.io.IOException;
import org.apache.http.client.HttpResponseException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import com.savagelook.android.UrlJsonAsyncTask;
public class LoginActivity extends Activity {
private final static String LOGIN_API_ENDPOINT_URL = "http://192.168.233.80:3000/api/v1/sessions.json";
private SharedPreferences mPreferences;
private String mUserEmail;
private String mUserPassword;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
mPreferences = getSharedPreferences("CurrentUser", MODE_PRIVATE);
}
public void login(View button) {
EditText userEmailField = (EditText) findViewById(R.id.userEmail);
mUserEmail = userEmailField.getText().toString();
EditText userPasswordField = (EditText) findViewById(R.id.userPassword);
mUserPassword = userPasswordField.getText().toString();
if (mUserEmail.length() == 0 || mUserPassword.length() == 0) {
// input fields are empty
Toast.makeText(this, "Please complete all the fields",
Toast.LENGTH_LONG).show();
return;
} else {
LoginTask loginTask = new LoginTask(LoginActivity.this);
loginTask.setMessageLoading("Logging in...");
loginTask.execute(LOGIN_API_ENDPOINT_URL);
}
}
private class LoginTask extends UrlJsonAsyncTask {
public LoginTask(Context context) {
super(context);
}
@Override
protected JSONObject doInBackground(String... urls) {
DefaultHttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(urls[0]);
JSONObject holder = new JSONObject();
JSONObject userObj = new JSONObject();
String response = null;
JSONObject json = new JSONObject();
try {
try {
// setup the returned values in case
// something goes wrong
json.put("success", false);
json.put("info", "Something went wrong. Retry!");
// add the user email and password to
// the params
userObj.put("email", mUserEmail);
userObj.put("password", mUserPassword);
holder.put("user", userObj);
StringEntity se = new StringEntity(holder.toString());
post.setEntity(se);
// setup the request headers
post.setHeader("Accept", "application/json");
post.setHeader("Content-Type", "application/json");
ResponseHandler<String> responseHandler = new BasicResponseHandler();
response = client.execute(post, responseHandler);
json = new JSONObject(response);
} catch (HttpResponseException e) {
e.printStackTrace();
Log.e("ClientProtocol", "" + e);
json.put("info", "Email and/or password are invalid. Retry!");
} catch (IOException e) {
e.printStackTrace();
Log.e("IO", "" + e);
}
} catch (JSONException e) {
e.printStackTrace();
Log.e("JSON", "" + e);
}
return json;
}
@Override
protected void onPostExecute(JSONObject json) {
try {
if (json.getBoolean("success")) {
// everything is ok
SharedPreferences.Editor editor = mPreferences.edit();
// save the returned auth_token into
// the SharedPreferences
editor.putString("AuthToken", json.getJSONObject("data").getString("auth_token"));
editor.commit();
// launch the HomeActivity and close this one
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
finish();
}
Toast.makeText(context, json.getString("info"), Toast.LENGTH_LONG).show();
} catch (Exception e) {
// something went wrong: show a Toast
// with the exception message
Toast.makeText(context, e.getMessage(), Toast.LENGTH_LONG).show();
} finally {
super.onPostExecute(json);
}
}
}
}