Java tutorial
/* 50AH-code ========= 50 Android Hacks (http://manning.com/sessa/) book source code Copyright (c) 2012 Manning Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /******************************************************************************* * Copyright (c) 2012 Manning * See the file license.txt for copying permission. ******************************************************************************/ package com.manning.androidhacks.hack023.authenticator; import android.accounts.Account; import android.accounts.AccountAuthenticatorActivity; import android.accounts.AccountManager; import android.app.Dialog; import android.app.ProgressDialog; import android.content.ContentResolver; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.text.TextUtils; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import com.manning.androidhacks.hack023.R; import com.manning.androidhacks.hack023.net.NetworkUtilities; import com.manning.androidhacks.hack023.provider.TodoContentProvider; public class AuthenticatorActivity extends AccountAuthenticatorActivity { private static final String TAG = AuthenticatorActivity.class.getCanonicalName(); public static final String PARAM_ACCOUNT_TYPE = "com.manning.androidhacks.hack023"; public static final String PARAM_AUTHTOKEN_TYPE = "authtokenType"; public static final String PARAM_USER = "user"; public static final String PARAM_CONFIRMCREDENTIALS = "confirmCredentials"; private AccountManager mAccountManager; private Thread mAuthThread; private String mAuthToken; private String mAuthTokenType; private Boolean mConfirmCredentials = false; private final Handler mHandler = new Handler(); private TextView mMessage; private String mPassword; private EditText mPasswordEdit; private String mUsername; private EditText mUsernameEdit; private Button mSignInButton; /** Was the original caller asking for an entirely new account? */ protected boolean mRequestNewAccount = false; private String mUser; @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); mAccountManager = AccountManager.get(this); checkMaximumNumberOfAccounts(); final Intent intent = getIntent(); mUser = intent.getStringExtra(PARAM_USER); mAuthTokenType = intent.getStringExtra(PARAM_AUTHTOKEN_TYPE); mRequestNewAccount = mUsername == null; mConfirmCredentials = intent.getBooleanExtra(PARAM_CONFIRMCREDENTIALS, false); Log.i(TAG, " request new: " + mRequestNewAccount); requestWindowFeature(Window.FEATURE_LEFT_ICON); setContentView(R.layout.login); getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON, android.R.drawable.ic_dialog_alert); findViews(); initFields(); } private void initFields() { mUsernameEdit.setText(mUser); mMessage.setText(getMessage()); mSignInButton.setOnClickListener(new OnClickListener() { public void onClick(View view) { handleLogin(view); } }); } private void handleLogin(View view) { if (mRequestNewAccount) { mUsername = mUsernameEdit.getText().toString(); } mPassword = mPasswordEdit.getText().toString(); if (TextUtils.isEmpty(mUsername) || TextUtils.isEmpty(mPassword)) { mMessage.setText(getMessage()); } showProgress(); mAuthThread = NetworkUtilities.attemptAuth(mUsername, mPassword, mHandler, AuthenticatorActivity.this); } private void showProgress() { showDialog(0); } private void hideProgress() { dismissDialog(0); } public void onAuthenticationResult(Boolean result) { hideProgress(); if (result) { if (!mConfirmCredentials) { finishLogin(); } else { // TODO see if we need to confirm credentials } } else { Log.e(TAG, "onAuthenticationResult: failed to authenticate"); mMessage.setText("User and/or password are incorrect"); } } @Override protected Dialog onCreateDialog(int id) { final ProgressDialog dialog = new ProgressDialog(this); dialog.setMessage("Login in"); dialog.setIndeterminate(true); dialog.setCancelable(true); dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { public void onCancel(DialogInterface dialog) { if (mAuthThread != null) { mAuthThread.interrupt(); finish(); } } }); return dialog; } private void finishLogin() { final Account account = new Account(mUsername, PARAM_ACCOUNT_TYPE); if (mRequestNewAccount) { mAccountManager.addAccountExplicitly(account, mPassword, null); Bundle bundle = new Bundle(); ContentResolver.addPeriodicSync(account, TodoContentProvider.AUTHORITY, bundle, 300); } else { mAccountManager.setPassword(account, mPassword); } final Intent intent = new Intent(); intent.putExtra(AccountManager.KEY_ACCOUNT_NAME, mUsername); intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE, PARAM_ACCOUNT_TYPE); if (mAuthTokenType != null && mAuthTokenType.equals(PARAM_AUTHTOKEN_TYPE)) { intent.putExtra(AccountManager.KEY_AUTHTOKEN, mAuthToken); } setAccountAuthenticatorResult(intent.getExtras()); setResult(RESULT_OK, intent); finish(); } private void findViews() { mMessage = (TextView) findViewById(R.id.message); mUsernameEdit = (EditText) findViewById(R.id.fid_edit); mPasswordEdit = (EditText) findViewById(R.id.password_edit); mSignInButton = (Button) findViewById(R.id.ok_button); } private CharSequence getMessage() { if (TextUtils.isEmpty(mUsername)) { return "New account"; } if (TextUtils.isEmpty(mPassword)) { return "Password is missing"; } return null; } private void checkMaximumNumberOfAccounts() { Account[] accounts = mAccountManager.getAccountsByType(PARAM_ACCOUNT_TYPE); if (accounts.length != 0) { Toast.makeText(this, "More than one account", Toast.LENGTH_SHORT).show(); finish(); } } }