Java tutorial
/* * Copyright (C) 2011 University of Washington * * 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.radicaldynamic.groupinform.application; import java.io.File; import org.apache.http.client.CookieStore; import org.apache.http.client.CredentialsProvider; import org.apache.http.client.protocol.ClientContext; import org.apache.http.impl.client.BasicCookieStore; import org.apache.http.protocol.BasicHttpContext; import org.apache.http.protocol.HttpContext; import org.apache.http.protocol.SyncBasicHttpContext; import org.javarosa.form.api.FormEntryController; import org.odk.collect.android.utilities.AgingCredentialsProvider; import android.app.Application; import android.content.Context; import android.content.ServiceConnection; import android.os.Environment; import android.os.IBinder; import android.preference.PreferenceManager; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.inputmethod.InputMethodManager; import android.widget.TextView; import android.widget.Toast; import com.radicaldynamic.groupinform.R; import com.radicaldynamic.groupinform.logic.InformOnlineState; import com.radicaldynamic.groupinform.services.DatabaseService; import com.radicaldynamic.groupinform.services.InformOnlineService; import com.radicaldynamic.groupinform.xform.FormBuilderState; /** * Extends the Application class to implement * @author carlhartung * */ public class Collect extends Application { // Flags for logging public class Log { public static final int LOGLEVEL = 5; public static final boolean VERBOSE = LOGLEVEL > 4; // Level 5 public static final boolean DEBUG = LOGLEVEL > 3; // Level 4 public static final boolean INFO = LOGLEVEL > 2; // Level 3 public static final boolean WARN = LOGLEVEL > 1; // Level 2 public static final boolean ERROR = LOGLEVEL > 0; // Level 1 } public final static String LOGTAG = "GC Mobile"; // Storage paths public static final String ODK_ROOT = Environment.getExternalStorageDirectory() + "/odk"; public static final String FORMS_PATH = ODK_ROOT + "/forms"; public static final String INSTANCES_PATH = ODK_ROOT + "/instances"; public static final String CACHE_PATH = ODK_ROOT + "/.cache"; public static final String METADATA_PATH = ODK_ROOT + "/metadata"; public static final String TMPFILE_PATH = CACHE_PATH + "/tmp.jpg"; public static final String DEFAULT_FONTSIZE = "21"; // Things from upstream private HttpContext localContext = null; private static Collect singleton = null; private FormEntryController formEntryController = null; private IBinder viewToken = null; // Service connections private ServiceConnection couchService = null; private DatabaseService dbService = null; private InformOnlineService ioService = null; // Current registration state of this device private InformOnlineState informOnlineState = new InformOnlineState(); // State container for the form builder private FormBuilderState formBuilderState = new FormBuilderState(); public static Collect getInstance() { return singleton; } /** * Creates required directories on the SDCard (or other external storage) * @throws RuntimeException if there is no SDCard or the directory exists as a non directory */ public static void createODKDirs() throws RuntimeException { String cardstatus = Environment.getExternalStorageState(); if (cardstatus.equals(Environment.MEDIA_REMOVED) || cardstatus.equals(Environment.MEDIA_UNMOUNTABLE) || cardstatus.equals(Environment.MEDIA_UNMOUNTED) || cardstatus.equals(Environment.MEDIA_MOUNTED_READ_ONLY) || cardstatus.equals(Environment.MEDIA_SHARED)) { RuntimeException e = new RuntimeException( "ODK reports :: SDCard error: " + Environment.getExternalStorageState()); throw e; } String[] dirs = { ODK_ROOT, FORMS_PATH, INSTANCES_PATH, CACHE_PATH, METADATA_PATH }; for (String dirName : dirs) { File dir = new File(dirName); if (!dir.exists()) { if (!dir.mkdirs()) { RuntimeException e = new RuntimeException("ODK reports :: Cannot create directory: " + dirName); throw e; } } else { if (!dir.isDirectory()) { RuntimeException e = new RuntimeException( "ODK reports :: " + dirName + " exists, but is not a directory"); throw e; } } } } /** * Shared HttpContext so a user doesn't have to re-enter login information * @return */ public synchronized HttpContext getHttpContext() { if (localContext == null) { // set up one context for all HTTP requests so that authentication // and cookies can be retained. localContext = new SyncBasicHttpContext(new BasicHttpContext()); // establish a local cookie store for this attempt at downloading... CookieStore cookieStore = new BasicCookieStore(); localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore); // and establish a credentials provider. Default is 7 minutes. CredentialsProvider credsProvider = new AgingCredentialsProvider(7 * 60 * 1000); localContext.setAttribute(ClientContext.CREDS_PROVIDER, credsProvider); } return localContext; } @Override public void onCreate() { singleton = this; PreferenceManager.setDefaultValues(this, R.xml.preferences, false); super.onCreate(); } public void setFormEntryController(FormEntryController formEntryController) { this.formEntryController = formEntryController; } public FormEntryController getFormEntryController() { return formEntryController; } /** * Creates and displays a dialog displaying the violated constraint. */ public void showSoftKeyboard(View v) { InputMethodManager inputManager = (InputMethodManager) getBaseContext() .getSystemService(Context.INPUT_METHOD_SERVICE); IBinder b = v.getWindowToken(); if (viewToken != null && !viewToken.equals(b)) { inputManager.hideSoftInputFromInputMethod(viewToken, 0); } if (inputManager.isActive(v)) return; inputManager.showSoftInput(v, 0); viewToken = b; } public void hideSoftKeyboard(View c) { InputMethodManager inputManager = (InputMethodManager) getBaseContext() .getSystemService(Context.INPUT_METHOD_SERVICE); if (viewToken != null) { inputManager.hideSoftInputFromWindow(viewToken, 0); } viewToken = null; if (c != null) { if (inputManager.isActive()) { inputManager.hideSoftInputFromWindow(c.getApplicationWindowToken(), 0); } } } public void createConstraintToast(String constraintText, int saveStatus) { switch (saveStatus) { case FormEntryController.ANSWER_CONSTRAINT_VIOLATED: if (constraintText == null) { constraintText = getString(R.string.invalid_answer_error); } break; case FormEntryController.ANSWER_REQUIRED_BUT_EMPTY: constraintText = getString(R.string.required_answer_error); break; } showCustomToast(constraintText); } public void showCustomToast(String message) { LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); View view = inflater.inflate(R.layout.toast_view, null); // Set the text in the view TextView tv = (TextView) view.findViewById(R.id.message); tv.setText(message); Toast t = new Toast(this); t.setView(view); t.setDuration(Toast.LENGTH_SHORT); t.setGravity(Gravity.CENTER, 0, 0); t.show(); } public void setCouchService(ServiceConnection couchService) { this.couchService = couchService; } public ServiceConnection getCouchService() { return couchService; } public void setDbService(DatabaseService dbService) { this.dbService = dbService; } public DatabaseService getDbService() { return dbService; } public void setInformOnlineState(InformOnlineState informOnlineState) { this.informOnlineState = informOnlineState; } public InformOnlineState getInformOnlineState() { return informOnlineState; } public void setIoService(InformOnlineService ioService) { this.ioService = ioService; } public InformOnlineService getIoService() { return ioService; } public void setFormBuilderState(FormBuilderState formBuilderState) { this.formBuilderState = formBuilderState; } public FormBuilderState getFormBuilderState() { return formBuilderState; } }