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- package ru.ktk45.www.feature;
- import android.animation.Animator;
- import android.animation.AnimatorListenerAdapter;
- import android.annotation.TargetApi;
- import android.content.Intent;
- import android.content.pm.PackageManager;
- import android.os.StrictMode;
- import android.support.annotation.NonNull;
- import android.support.design.widget.Snackbar;
- import android.support.v7.app.AppCompatActivity;
- import android.app.LoaderManager.LoaderCallbacks;
- import android.content.CursorLoader;
- import android.content.Loader;
- import android.database.Cursor;
- import android.net.Uri;
- import android.os.AsyncTask;
- import android.os.Build;
- import android.os.Bundle;
- import android.provider.ContactsContract;
- import android.text.TextUtils;
- import android.util.Log;
- import android.view.KeyEvent;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.view.inputmethod.EditorInfo;
- import android.widget.ArrayAdapter;
- import android.widget.AutoCompleteTextView;
- import android.widget.Button;
- import android.widget.EditText;
- import android.widget.TextView;
- import android.widget.Toast;
- import org.json.JSONException;
- import org.json.JSONObject;
- import java.io.IOException;
- import java.util.ArrayList;
- import java.util.List;
- import static android.Manifest.permission.READ_CONTACTS;
- /**
- * A login screen that offers login via email/password.
- */
- public class LoginActivity extends AppCompatActivity implements LoaderCallbacks<Cursor> {
- /**
- * Id to identity READ_CONTACTS permission request.
- */
- private static final int REQUEST_READ_CONTACTS = 0;
- /**
- * A dummy authentication store containing known user names and passwords.
- * TODO: remove after connecting to a real authentication system.
- */
- private static final String[] DUMMY_CREDENTIALS = new String[]{
- "foo@example.com:hello", "bar@example.com:world"
- };
- /**
- * Keep track of the login task to ensure we can cancel it if requested.
- */
- private UserLoginTask mAuthTask = null;
- // UI references.
- private AutoCompleteTextView mEmailView;
- private EditText mPasswordView;
- private View mProgressView;
- private View mLoginFormView;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_login);
- // StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
- // StrictMode.setThreadPolicy(policy);
- // Set up the login form.
- mEmailView = (AutoCompleteTextView) findViewById(R.id.email);
- populateAutoComplete();
- mPasswordView = (EditText) findViewById(R.id.password);
- mPasswordView.setOnEditorActionListener(new TextView.OnEditorActionListener() {
- @Override
- public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
- if (id == EditorInfo.IME_ACTION_DONE || id == EditorInfo.IME_NULL) {
- attemptLogin();
- return true;
- }
- return false;
- }
- });
- Button mEmailSignInButton = (Button) findViewById(R.id.email_sign_in_button);
- mEmailSignInButton.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View view) {
- attemptLogin();
- }
- });
- mLoginFormView = findViewById(R.id.login_form);
- mProgressView = findViewById(R.id.login_progress);
- Intent intent = new Intent(LoginActivity.this, MainActivity.class);
- startActivity(intent);
- }
- private void populateAutoComplete() {
- if (!mayRequestContacts()) {
- return;
- }
- getLoaderManager().initLoader(0, null, this);
- }
- private boolean mayRequestContacts() {
- if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
- return true;
- }
- if (checkSelfPermission(READ_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
- return true;
- }
- if (shouldShowRequestPermissionRationale(READ_CONTACTS)) {
- Snackbar.make(mEmailView, R.string.permission_rationale, Snackbar.LENGTH_INDEFINITE)
- .setAction(android.R.string.ok, new View.OnClickListener() {
- @Override
- @TargetApi(Build.VERSION_CODES.M)
- public void onClick(View v) {
- requestPermissions(new String[]{READ_CONTACTS}, REQUEST_READ_CONTACTS);
- }
- });
- } else {
- requestPermissions(new String[]{READ_CONTACTS}, REQUEST_READ_CONTACTS);
- }
- return false;
- }
- /**
- * Callback received when a permissions request has been completed.
- */
- @Override
- public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
- @NonNull int[] grantResults) {
- if (requestCode == REQUEST_READ_CONTACTS) {
- if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
- populateAutoComplete();
- }
- }
- }
- /**
- * Attempts to sign in or register the account specified by the login form.
- * If there are form errors (invalid email, missing fields, etc.), the
- * errors are presented and no actual login attempt is made.
- */
- private void attemptLogin() {
- if (mAuthTask != null) {
- return;
- }
- // Reset errors.
- mEmailView.setError(null);
- mPasswordView.setError(null);
- // Store values at the time of the login attempt.
- String email = mEmailView.getText().toString();
- String password = mPasswordView.getText().toString();
- boolean cancel = false;
- View focusView = null;
- // Check for a valid password, if the user entered one.
- if (!TextUtils.isEmpty(password) && !isPasswordValid(password)) {
- mPasswordView.setError(getString(R.string.error_invalid_password));
- focusView = mPasswordView;
- cancel = true;
- }
- // Check for a valid email address.
- if (TextUtils.isEmpty(email)) {
- mEmailView.setError(getString(R.string.error_field_required));
- focusView = mEmailView;
- cancel = true;
- } else if (!isEmailValid(email)) {
- mEmailView.setError(getString(R.string.error_invalid_login));
- focusView = mEmailView;
- cancel = true;
- }
- if (cancel) {
- // There was an error; don't attempt login and focus the first
- // form field with an error.
- focusView.requestFocus();
- } else {
- // Show a progress spinner, and kick off a background task to
- // perform the user login attempt.
- showProgress(true);
- mAuthTask = new UserLoginTask(email, password);
- mAuthTask.execute((Void) null);
- }
- }
- private boolean isEmailValid(String email) {
- char[] test = email.toCharArray();
- for (int i = 0; i < test.length; i++) {
- if (test[i] < 48 || test[i] > 57) {
- return false;
- }
- }
- return true;
- }
- private boolean isPasswordValid(String password) {
- //TODO: Replace this with your own logic
- return password.length() > 4;
- }
- /**
- * Shows the progress UI and hides the login form.
- */
- @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
- private void showProgress(final boolean show) {
- // On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
- // for very easy animations. If available, use these APIs to fade-in
- // the progress spinner.
- if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
- int shortAnimTime = getResources().getInteger(android.R.integer.config_shortAnimTime);
- mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
- mLoginFormView.animate().setDuration(shortAnimTime).alpha(
- show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
- @Override
- public void onAnimationEnd(Animator animation) {
- mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
- }
- });
- mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
- mProgressView.animate().setDuration(shortAnimTime).alpha(
- show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
- @Override
- public void onAnimationEnd(Animator animation) {
- mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
- }
- });
- } else {
- // The ViewPropertyAnimator APIs are not available, so simply show
- // and hide the relevant UI components.
- mProgressView.setVisibility(show ? View.VISIBLE : View.GONE);
- mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
- }
- }
- @Override
- public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
- return new CursorLoader(this,
- // Retrieve data rows for the device user's 'profile' contact.
- Uri.withAppendedPath(ContactsContract.Profile.CONTENT_URI,
- ContactsContract.Contacts.Data.CONTENT_DIRECTORY), ProfileQuery.PROJECTION,
- // Select only email addresses.
- ContactsContract.Contacts.Data.MIMETYPE +
- " = ?", new String[]{ContactsContract.CommonDataKinds.Email
- .CONTENT_ITEM_TYPE},
- // Show primary email addresses first. Note that there won't be
- // a primary email address if the user hasn't specified one.
- ContactsContract.Contacts.Data.IS_PRIMARY + " DESC");
- }
- @Override
- public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
- List<String> emails = new ArrayList<>();
- cursor.moveToFirst();
- while (!cursor.isAfterLast()) {
- emails.add(cursor.getString(ProfileQuery.ADDRESS));
- cursor.moveToNext();
- }
- addEmailsToAutoComplete(emails);
- }
- @Override
- public void onLoaderReset(Loader<Cursor> cursorLoader) {
- }
- private void addEmailsToAutoComplete(List<String> emailAddressCollection) {
- //Create adapter to tell the AutoCompleteTextView what to show in its dropdown list.
- ArrayAdapter<String> adapter =
- new ArrayAdapter<>(LoginActivity.this,
- android.R.layout.simple_dropdown_item_1line, emailAddressCollection);
- mEmailView.setAdapter(adapter);
- }
- private interface ProfileQuery {
- String[] PROJECTION = {
- ContactsContract.CommonDataKinds.Email.ADDRESS,
- ContactsContract.CommonDataKinds.Email.IS_PRIMARY,
- };
- int ADDRESS = 0;
- int IS_PRIMARY = 1;
- }
- /**
- * Represents an asynchronous login/registration task used to authenticate
- * the user.
- */
- public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
- private final String mEmail;
- private final String mPassword;
- UserLoginTask(String email, String password) {
- mEmail = email;
- mPassword = password;
- }
- @Override
- protected Boolean doInBackground(Void... params) {
- // TODO: attempt authentication against a network service.
- try {
- Link h = new Link();
- h.SetParameter("f0", mEmail);
- h.SetParameter("f1", mPassword);
- JSONObject obj = h.POST("/Authorization/Login");
- String res = obj.getString("Error");
- if (res.equals("null")) {
- Intent intent = new Intent(LoginActivity.this, MainActivity.class);
- startActivity(intent);
- } else {
- Toast.makeText(LoginActivity.this, obj.getString("Note"), Toast.LENGTH_LONG);
- }
- } catch (JSONException e) {
- e.printStackTrace();
- }
- // TODO: register the new account here.
- return true;
- }
- @Override
- protected void onPostExecute(final Boolean success) {
- mAuthTask = null;
- showProgress(false);
- if (success) {
- // finish();
- } else {
- mPasswordView.setError(getString(R.string.error_incorrect_password));
- mPasswordView.requestFocus();
- }
- }
- @Override
- protected void onCancelled() {
- mAuthTask = null;
- showProgress(false);
- }
- }
- }
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