Java tutorial
/* * Copyright 2014 Chris Banes * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.honestme.animetasteex.login; import android.accounts.Account; import android.accounts.AccountManager; import android.os.Bundle; import android.support.v4.app.Fragment; import android.util.Patterns; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.inputmethod.EditorInfo; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.Button; import android.widget.EditText; import android.widget.RadioButton; import android.widget.RadioGroup; import android.widget.TextView; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import com.honestme.animetasteex.R; public class LoginFragment extends Fragment implements LoginPresenter.LoginUi, View.OnClickListener, TextView.OnEditorActionListener, RadioGroup.OnCheckedChangeListener { private static final String KEY_NEW_ACCOUNT = "new_account"; private LoginPresenter.LoginUiCallbacks mCallbacks; private EditText mUsername; private EditText mPassword; private Button mLoginButton; private RadioGroup mTypeRadioGroup; private RadioButton mLoginRadioButton, mCreateRadioButton; private AutoCompleteTextView mPhoneAutoComplete; public static LoginFragment create() { LoginFragment fragment = new LoginFragment(); return fragment; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_login, container, false); mUsername = (EditText) view.findViewById(R.id.edit_login); mUsername.setOnEditorActionListener(this); mPassword = (EditText) view.findViewById(R.id.edit_password); mPassword.setOnEditorActionListener(this); mLoginButton = (Button) view.findViewById(R.id.btn_submit); mLoginButton.setOnClickListener(this); mTypeRadioGroup = (RadioGroup) view.findViewById(R.id.rg_type); mTypeRadioGroup.setOnCheckedChangeListener(this); mPhoneAutoComplete = (AutoCompleteTextView) view.findViewById(R.id.login_phone); mPhoneAutoComplete.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View v, boolean hasFocus) { mPhoneAutoComplete.showDropDown(); } }); mLoginRadioButton = (RadioButton) view.findViewById(R.id.rb_login); mCreateRadioButton = (RadioButton) view.findViewById(R.id.rb_create); mLoginRadioButton.setChecked(true); return view; } @Override public void onResume() { super.onResume(); getController().attachUi(this); } @Override public void onPause() { getController().detachUi(this); super.onPause(); } @Override public void showLoadingProgress(boolean visible) { getActivity().setProgressBarIndeterminateVisibility(visible); } @Override public void showError(LoginPresenter.Error error) { switch (error) { case BAD_AUTH: mPassword.setError(getString(R.string.login_login_failed)); break; case BAD_REGISTER: mUsername.setError(getString(R.string.login_register_failed)); break; } } @Override public void onClick(View view) { switch (view.getId()) { case R.id.btn_submit: submit(); break; } } @Override public boolean onEditorAction(TextView textView, int actionId, KeyEvent event) { if (textView == mPassword) { switch (actionId) { case EditorInfo.IME_ACTION_DONE: submit(); return true; } } return false; } private void submit() { mPassword.setError(null); if (mCallbacks != null) { final String username = mUsername.getText().toString().trim(); if (!mCallbacks.isUserEmpty(username)) { mUsername.setError(getString(R.string.login_username_empty)); return; } mUsername.setError(null); final String password = mPassword.getText().toString().trim(); if (!mCallbacks.isPasswordEmpty(password)) { mPassword.setError(getString(R.string.login_password_empty)); return; } mPassword.setError(null); switch (mTypeRadioGroup.getCheckedRadioButtonId()) { case R.id.rb_login: mCallbacks.login(username, password); break; case R.id.rb_create: final String phone = mPhoneAutoComplete.getText().toString().trim(); if (!mCallbacks.isPhoneEmpty(phone)) { mPhoneAutoComplete.setError(getString(R.string.login_phone_invalid)); return; } mPhoneAutoComplete.setError(null); mCallbacks.createAccount(username, password, phone); break; } } } LoginPresenter getController() { return new LoginPresenter(); } @Override public void setCallBack(LoginPresenter.LoginUiCallbacks callbacks) { mCallbacks = callbacks; } @Override public void onCheckedChanged(RadioGroup group, int checkedId) { switch (checkedId) { case R.id.rb_login: mLoginButton.setText(R.string.login_login); mPhoneAutoComplete.setVisibility(View.GONE); break; case R.id.rb_create: mLoginButton.setText(R.string.login_register); mPhoneAutoComplete.setVisibility(View.VISIBLE); if (mPhoneAutoComplete.getAdapter() == null) { final Set<String> phoneSet = new HashSet<>(); for (Account account : AccountManager.get(getActivity()).getAccounts()) { if (Patterns.EMAIL_ADDRESS.matcher(account.name).matches()) { phoneSet.add(account.name); } } List<String> emails = new ArrayList<>(phoneSet); mPhoneAutoComplete.setAdapter( new ArrayAdapter<>(getActivity(), android.R.layout.simple_spinner_dropdown_item, emails)); } break; } } }