abstract AsyncTask
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ikarulus
parent
9cc7ff766b
commit
abe95da7d1
3 changed files with 122 additions and 125 deletions
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@ -0,0 +1,5 @@
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package com.example.hochi.nextcompanion;
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interface AsyncTaskCallbacks<T> {
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void onTaskComplete(T result);
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}
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@ -3,58 +3,34 @@ package com.example.hochi.nextcompanion;
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import android.animation.Animator;
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import android.animation.AnimatorListenerAdapter;
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import android.annotation.TargetApi;
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import android.content.SharedPreferences;
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import android.content.pm.PackageManager;
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import android.support.annotation.NonNull;
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import android.support.design.widget.Snackbar;
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import android.support.v7.app.AppCompatActivity;
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import android.app.LoaderManager.LoaderCallbacks;
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import android.content.CursorLoader;
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import android.content.Loader;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.AsyncTask;
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import android.content.SharedPreferences;
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import android.support.v7.app.AppCompatActivity;
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import android.os.Build;
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import android.os.Bundle;
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import android.provider.ContactsContract;
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import android.text.TextUtils;
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import android.util.Log;
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import android.view.KeyEvent;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.view.inputmethod.EditorInfo;
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import android.widget.ArrayAdapter;
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import android.widget.AutoCompleteTextView;
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import android.widget.Button;
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import android.widget.EditText;
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import android.widget.TextView;
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import org.json.JSONObject;
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import java.io.BufferedReader;
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import java.io.DataOutputStream;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.UnsupportedEncodingException;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.List;
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import static android.Manifest.permission.READ_CONTACTS;
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/**
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* A login screen that offers login via email/password.
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*/
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public class LoginActivity extends AppCompatActivity {
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public class LoginActivity extends AppCompatActivity implements AsyncTaskCallbacks<String> {
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/**
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* Keep track of the login task to ensure we can cancel it if requested.
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*/
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private UserLoginTask mAuthTask = null;
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private RequestHandler mAuthTask = null;
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// UI references.
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private TextView mPhoneView;
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@ -136,7 +112,7 @@ public class LoginActivity extends AppCompatActivity {
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// Show a progress spinner, and kick off a background task to
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// perform the user login attempt.
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showProgress(true);
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mAuthTask = new UserLoginTask(email, password);
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mAuthTask = new RequestHandler(email, password, this);
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mAuthTask.execute((Void) null);
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}
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}
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@ -182,105 +158,26 @@ public class LoginActivity extends AppCompatActivity {
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}
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}
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/**
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* Represents an asynchronous login/registration task used to authenticate
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* the user.
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*/
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public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
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private final String mPhone;
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private final String mPin;
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UserLoginTask(String phone, String pin) {
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mPhone = URLEncoder.encode(phone);
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mPin = pin;
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}
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@Override
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protected Boolean doInBackground(Void... params) {
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Boolean success = false;
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String urlParameters = "apikey=rXXqTgQZUPZ89lzB&mobile=" + mPhone + "&pin=" + mPin;
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HttpURLConnection connection = null;
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@Override
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public void onTaskComplete(String response) {
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if (!response.isEmpty()) {
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try {
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//Create connection
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URL url = new URL("https://api.nextbike.net/api/login.json");
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connection = (HttpURLConnection) url.openConnection();
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connection.setRequestMethod("POST");
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connection.setRequestProperty("Content-Type",
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"application/x-www-form-urlencoded");
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connection.setRequestProperty("Content-Length", "" +
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Integer.toString(urlParameters.getBytes().length));
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connection.setRequestProperty("Content-Language", "en-US");
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connection.setUseCaches (false);
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connection.setDoInput(true);
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connection.setDoOutput(true);
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//Send request
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DataOutputStream wr = new DataOutputStream (
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connection.getOutputStream ());
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wr.writeBytes (urlParameters);
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wr.flush ();
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wr.close ();
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//Get Response
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InputStream is = connection.getInputStream();
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BufferedReader rd = new BufferedReader(new InputStreamReader(is));
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String line;
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StringBuilder response = new StringBuilder();
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while((line = rd.readLine()) != null) {
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response.append(line);
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response.append('\r');
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}
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rd.close();
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try {
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JSONObject jObject = new JSONObject(response.toString());
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JSONObject userObject = jObject.getJSONObject("user");
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String loginkey = userObject.getString("loginkey");
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Log.d("DEBUG", loginkey);
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success=true;
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SharedPreferences sharedPref = getSharedPreferences("persistence", MODE_PRIVATE);
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SharedPreferences.Editor editor = sharedPref.edit();
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editor.putString("loginKey", loginkey);
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editor.apply();
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}
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catch (Exception e) {
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e.printStackTrace();
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success=false;
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}
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} catch (Exception e) {
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JSONObject jObject = new JSONObject(response);
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JSONObject userObject = jObject.getJSONObject("user");
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String loginkey = userObject.getString("loginkey");
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Log.d("DEBUG", loginkey);
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SharedPreferences sharedPref = getSharedPreferences("persistence", MODE_PRIVATE);
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SharedPreferences.Editor editor = sharedPref.edit();
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editor.putString("loginKey", loginkey);
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editor.apply();
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}
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catch (Exception e) {
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e.printStackTrace();
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} finally {
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if(connection != null) {
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connection.disconnect();
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}
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}
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return success;
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}
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@Override
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protected void onPostExecute(final Boolean success) {
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mAuthTask = null;
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showProgress(false);
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if (success) {
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finish();
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} else {
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mPinView.setError(getString(R.string.error_incorrect_pin));
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mPinView.requestFocus();
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}
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}
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@Override
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protected void onCancelled() {
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mAuthTask = null;
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showProgress(false);
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finish();
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} else {
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mPinView.setError(getString(R.string.error_incorrect_pin));
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mPinView.requestFocus();
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}
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}
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}
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@ -0,0 +1,95 @@
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package com.example.hochi.nextcompanion;
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import android.app.Activity;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.os.AsyncTask;
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import android.util.Log;
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import org.json.JSONObject;
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import java.io.BufferedReader;
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import java.io.DataOutputStream;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.net.URLEncoder;
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public class RequestHandler extends AsyncTask<Void, Void, String> {
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private final String mPhone;
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private final String mPin;
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private AsyncTaskCallbacks<String> callback;
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RequestHandler(String phone, String pin, AsyncTaskCallbacks<String> act) {
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mPhone = URLEncoder.encode(phone);
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mPin = pin;
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callback = act;
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}
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@Override
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protected String doInBackground(Void... params) {
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StringBuilder response = new StringBuilder();
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String urlParameters = "apikey=rXXqTgQZUPZ89lzB&mobile=" + mPhone + "&pin=" + mPin;
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HttpURLConnection connection = null;
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try {
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//Create connection
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URL url = new URL("https://api.nextbike.net/api/login.json");
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connection = (HttpURLConnection) url.openConnection();
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connection.setRequestMethod("POST");
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connection.setRequestProperty("Content-Type",
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"application/x-www-form-urlencoded");
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connection.setRequestProperty("Content-Length", "" +
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Integer.toString(urlParameters.getBytes().length));
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connection.setRequestProperty("Content-Language", "en-US");
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connection.setUseCaches (false);
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connection.setDoInput(true);
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connection.setDoOutput(true);
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//Send request
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DataOutputStream wr = new DataOutputStream (
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connection.getOutputStream ());
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wr.writeBytes (urlParameters);
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wr.flush ();
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wr.close ();
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//Get Response
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InputStream is = connection.getInputStream();
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BufferedReader rd = new BufferedReader(new InputStreamReader(is));
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String line;
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while((line = rd.readLine()) != null) {
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response.append(line);
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response.append('\r');
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}
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rd.close();
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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if(connection != null) {
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connection.disconnect();
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}
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}
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return response.toString();
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}
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@Override
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protected void onPostExecute(final String response) {
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//mAuthTask = null;
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//showProgress(false);
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callback.onTaskComplete(response);
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}
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@Override
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protected void onCancelled() {
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//mAuthTask = null;
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//showProgress(false);
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}
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}
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