Java tutorial
/** * Copyright (c) 2012 Todoroo Inc * * See the file "LICENSE" for the full license governing this code. */ package com.todoroo.astrid.sync; import java.util.Date; import java.util.HashMap; import java.util.Set; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.Intent; import android.content.res.Resources; import android.graphics.Color; import android.os.Bundle; import android.preference.Preference; import android.preference.Preference.OnPreferenceClickListener; import android.preference.PreferenceCategory; import android.view.View; import android.view.ViewGroup.OnHierarchyChangeListener; import com.todoroo.andlib.service.DependencyInjectionService; import com.todoroo.andlib.utility.AndroidUtilities; import com.todoroo.andlib.utility.DateUtilities; import com.todoroo.andlib.utility.DialogUtilities; import com.todoroo.andlib.utility.TodorooPreferenceActivity; import com.todoroo.astrid.api.R; /** * Utility class for common synchronization action: displaying synchronization * preferences and an action panel so users can initiate actions from the menu. * * @author Tim Su <tim@todoroo.com * */ abstract public class SyncProviderPreferences extends TodorooPreferenceActivity { // --- interface public static final int RESULT_CODE_SYNCHRONIZE = 2; /** * @return your preference resource */ @Override abstract public int getPreferenceResource(); /** * kick off synchronization */ abstract public void startSync(); /** * log user out */ abstract public void logOut(); /** * @return get preference utilities */ abstract public SyncProviderUtilities getUtilities(); protected static final int REQUEST_LOGIN = 0; // --- implementation private int statusColor = Color.BLACK; public SyncProviderPreferences() { DependencyInjectionService.getInstance().inject(this); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getListView().setOnHierarchyChangeListener(new OnHierarchyChangeListener() { @Override public void onChildViewRemoved(View parent, View child) { // } @Override public void onChildViewAdded(View parent, View child) { View view = findViewById(R.id.status); if (view != null) view.setBackgroundColor(statusColor); } }); } /** * * @param resource * if null, updates all resources */ @Override public void updatePreferences(Preference preference, Object value) { final Resources r = getResources(); // interval if (r.getString(getUtilities().getSyncIntervalKey()).equals(preference.getKey())) { int index = AndroidUtilities.indexOf(r.getStringArray(R.array.sync_SPr_interval_values), (String) value); if (index <= 0) preference.setSummary(R.string.sync_SPr_interval_desc_disabled); else preference.setSummary(r.getString(R.string.sync_SPr_interval_desc, r.getStringArray(R.array.sync_SPr_interval_entries)[index])); } // status else if (r.getString(R.string.sync_SPr_status_key).equals(preference.getKey())) { boolean loggedIn = getUtilities().isLoggedIn(); String status; //String subtitle = ""; //$NON-NLS-1$ // ! logged in - display message, click -> sync if (!loggedIn) { status = r.getString(R.string.sync_status_loggedout); statusColor = Color.rgb(19, 132, 165); } // sync is occurring else if (getUtilities().isOngoing()) { status = r.getString(R.string.sync_status_ongoing); statusColor = Color.rgb(0, 0, 100); } // last sync had errors else if (getUtilities().getLastError() != null || getUtilities().getLastAttemptedSyncDate() != 0) { // last sync was failure if (getUtilities().getLastAttemptedSyncDate() != 0) { status = r.getString(R.string.sync_status_failed, DateUtilities.getDateStringWithTime( SyncProviderPreferences.this, new Date(getUtilities().getLastAttemptedSyncDate()))); statusColor = Color.rgb(100, 0, 0); if (getUtilities().getLastSyncDate() > 0) { // subtitle = r.getString(R.string.sync_status_failed_subtitle, // DateUtilities.getDateStringWithTime(SyncProviderPreferences.this, // new Date(getUtilities().getLastSyncDate()))); } } else { long lastSyncDate = getUtilities().getLastSyncDate(); String dateString = lastSyncDate > 0 ? DateUtilities.getDateStringWithTime(SyncProviderPreferences.this, new Date(lastSyncDate)) : ""; //$NON-NLS-1$ status = r.getString(R.string.sync_status_errors, dateString); statusColor = Color.rgb(100, 100, 0); } } else if (getUtilities().getLastSyncDate() > 0) { status = r.getString(R.string.sync_status_success, DateUtilities.getDateStringWithTime( SyncProviderPreferences.this, new Date(getUtilities().getLastSyncDate()))); statusColor = Color.rgb(0, 100, 0); } else { status = r.getString(R.string.sync_status_never); statusColor = Color.rgb(0, 0, 100); } preference.setTitle(R.string.sync_SPr_sync); preference.setSummary(r.getString(R.string.sync_SPr_status_subtitle, status)); preference.setOnPreferenceClickListener(new OnPreferenceClickListener() { public boolean onPreferenceClick(Preference p) { startSync(); return true; } }); View view = findViewById(R.id.status); if (view != null) view.setBackgroundColor(statusColor); } else if (r.getString(R.string.sync_SPr_key_last_error).equals(preference.getKey())) { if (getUtilities().getLastError() != null) { // Display error final String service = getTitle().toString(); final String lastErrorFull = getUtilities().getLastError(); final String lastErrorDisplay = adjustErrorForDisplay(r, lastErrorFull, service); preference.setTitle(R.string.sync_SPr_last_error); preference.setSummary(R.string.sync_SPr_last_error_subtitle); preference.setOnPreferenceClickListener(new OnPreferenceClickListener() { @Override @SuppressWarnings("nls") public boolean onPreferenceClick(Preference pref) { // Show last error new AlertDialog.Builder(SyncProviderPreferences.this).setTitle(R.string.sync_SPr_last_error) .setMessage(lastErrorDisplay) .setPositiveButton(R.string.sync_SPr_send_report, new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Intent emailIntent = new Intent(Intent.ACTION_SEND); emailIntent.setType("plain/text") .putExtra(Intent.EXTRA_EMAIL, new String[] { "android-bugs@astrid.com" }) .putExtra(Intent.EXTRA_SUBJECT, service + " Sync Error") .putExtra(Intent.EXTRA_TEXT, lastErrorFull); startActivity(Intent.createChooser(emailIntent, r.getString(R.string.sync_SPr_send_report))); } }).setNegativeButton(R.string.DLG_close, null).create().show(); return true; } }); } else { PreferenceCategory statusCategory = (PreferenceCategory) findPreference( r.getString(R.string.sync_SPr_group_status)); statusCategory.removePreference(findPreference(r.getString(R.string.sync_SPr_key_last_error))); } } // log out button else if (r.getString(R.string.sync_SPr_forget_key).equals(preference.getKey())) { boolean loggedIn = getUtilities().isLoggedIn(); preference.setOnPreferenceClickListener(new OnPreferenceClickListener() { public boolean onPreferenceClick(Preference p) { DialogUtilities.okCancelDialog(SyncProviderPreferences.this, r.getString(R.string.sync_forget_confirm), new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { logOut(); initializePreference(getPreferenceScreen()); } }, null); return true; } }); if (!loggedIn) { PreferenceCategory category = (PreferenceCategory) findPreference( r.getString(R.string.sync_SPr_key_options)); category.removePreference(preference); } } } /** * We can define exception strings in this map that we want to replace with more user-friendly * messages. As we discover new exception types, we can expand the map. * * NOTE: All resources are currently required to have a single string format argument * for inserting the service name into the error message */ private static HashMap<String, Integer> exceptionsToDisplayMessages; @SuppressWarnings("nls") private static HashMap<String, Integer> getExceptionMap() { if (exceptionsToDisplayMessages == null) { exceptionsToDisplayMessages = new HashMap<String, Integer>(); exceptionsToDisplayMessages.put("java.net.ConnectionException", R.string.sync_error_offline); exceptionsToDisplayMessages.put("java.net.UnknownHostException", R.string.sync_error_offline); exceptionsToDisplayMessages.put("org.apache.http.conn.HttpHostConnectionException", R.string.sync_error_offline); } return exceptionsToDisplayMessages; } private static final String adjustErrorForDisplay(Resources r, String lastError, String service) { Set<String> exceptions = getExceptionMap().keySet(); Integer resource = null; for (String key : exceptions) { if (lastError.contains(key)) { resource = getExceptionMap().get(key); break; } } if (resource == null) return lastError; return r.getString(resource.intValue(), service); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_LOGIN && resultCode == RESULT_OK) { setResult(RESULT_CODE_SYNCHRONIZE); finish(); } else { super.onActivityResult(requestCode, resultCode, data); } } }