/* * Copyright 2008 ZXing authors * Copyright 2011 Robert Theis * * 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 edu.sfsu.cs.orange.ocr; import com.v.mypersonaltrainer.R; import android.app.Activity; import android.app.AlertDialog; import android.content.ActivityNotFoundException; import android.content.DialogInterface; import android.content.Intent; import android.net.MailTo; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.Button; /** * Activity to display informational pages to the user in a WebView. * * The code for this class was adapted from the ZXing project: http://code.google.com/p/zxing */ public final class HelpActivity extends Activity { private static final String TAG = HelpActivity.class.getSimpleName(); // Use this key and one of the values below when launching this activity via intent. If not // present, the default page will be loaded. public static final String REQUESTED_PAGE_KEY = "requested_page_key"; public static final String DEFAULT_PAGE = "whatsnew.html"; public static final String ABOUT_PAGE = "about.html"; public static final String TERMS_PAGE = "terms.html"; public static final String WHATS_NEW_PAGE = "whatsnew.html"; private static final String BASE_URL = "file:///android_asset/html/"; private static final String WEBVIEW_STATE_PRESENT = "webview_state_present"; private WebView webView; private final Button.OnClickListener doneListener = new Button.OnClickListener() { @Override public void onClick(View view) { finish(); } }; @Override protected void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.help); webView = (WebView)findViewById(R.id.help_contents); webView.setWebViewClient(new HelpClient(this)); Intent intent = getIntent(); String page = intent.getStringExtra(REQUESTED_PAGE_KEY); // Show an OK button. View doneButton = findViewById(R.id.done_button); doneButton.setOnClickListener(doneListener); if (page.equals(DEFAULT_PAGE)) { doneButton.setVisibility(View.VISIBLE); } else { doneButton.setVisibility(View.GONE); } // Froyo has a bug with calling onCreate() twice in a row, which causes the What's New page // that's auto-loaded on first run to appear blank. As a workaround we only call restoreState() // if a valid URL was loaded at the time the previous activity was torn down. if (icicle != null && icicle.getBoolean(WEBVIEW_STATE_PRESENT, false)) { webView.restoreState(icicle); } else if (intent != null && page != null && page.length() > 0) { webView.loadUrl(BASE_URL + page); } else { webView.loadUrl(BASE_URL + DEFAULT_PAGE); } } @Override protected void onSaveInstanceState(Bundle state) { String url = webView.getUrl(); if (url != null && url.length() > 0) { webView.saveState(state); state.putBoolean(WEBVIEW_STATE_PRESENT, true); } } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (webView.canGoBack()) { webView.goBack(); return true; } } return super.onKeyDown(keyCode, event); } private final class HelpClient extends WebViewClient { Activity context; public HelpClient(Activity context){ this.context = context; } @Override public void onPageFinished(WebView view, String url) { setTitle(view.getTitle()); } @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { if (url.startsWith("file")) { // Keep local assets in this WebView. return false; } else if (url.startsWith("mailto:")) { try { MailTo mt = MailTo.parse(url); Intent i = new Intent(Intent.ACTION_SEND); i.setType("message/rfc822"); i.putExtra(Intent.EXTRA_EMAIL, new String[]{mt.getTo()}); i.putExtra(Intent.EXTRA_SUBJECT, mt.getSubject()); context.startActivity(i); view.reload(); } catch (ActivityNotFoundException e) { Log.w(TAG, "Problem with Intent.ACTION_SEND", e); new AlertDialog.Builder(context) .setTitle("Contact Info") .setMessage( "Please send your feedback to: app.ocr@gmail.com" ) .setPositiveButton( "Done", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Log.d("AlertDialog", "Positive"); } }) .show(); } return true; } else { // Open external URLs in Browser. startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url))); return true; } } } }