Java tutorial
/** * ownCloud Android client application * * @author masensio * @author David A. Velasco * Copyright (C) 2015 ownCloud Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ package com.owncloud.android.ui.activity; import android.app.SearchManager; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import com.owncloud.android.R; import com.owncloud.android.lib.common.utils.Log_OC; import com.owncloud.android.providers.UsersAndGroupsSearchProvider; import com.owncloud.android.lib.common.operations.RemoteOperation; import com.owncloud.android.lib.common.operations.RemoteOperationResult; import com.owncloud.android.datamodel.OCFile; import com.owncloud.android.lib.resources.shares.OCShare; import com.owncloud.android.lib.resources.shares.ShareType; import com.owncloud.android.ui.fragment.SearchShareesFragment; import com.owncloud.android.ui.fragment.ShareFileFragment; import com.owncloud.android.utils.GetShareWithUsersAsyncTask; /** * Activity for sharing files */ public class ShareActivity extends FileActivity implements ShareFileFragment.OnShareFragmentInteractionListener, SearchShareesFragment.OnSearchFragmentInteractionListener { private static final String TAG = ShareActivity.class.getSimpleName(); private static final String TAG_SHARE_FRAGMENT = "SHARE_FRAGMENT"; private static final String TAG_SEARCH_FRAGMENT = "SEARCH_USER_AND_GROUPS_FRAGMENT"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.share_activity); FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); if (savedInstanceState == null) { // Add Share fragment on first creation Fragment fragment = ShareFileFragment.newInstance(getFile(), getAccount()); ft.replace(R.id.share_fragment_container, fragment, TAG_SHARE_FRAGMENT); ft.commit(); } } protected void onAccountSet(boolean stateWasRecovered) { super.onAccountSet(stateWasRecovered); // Load data into the list Log_OC.d(TAG, "Refreshing lists on account set"); refreshUsersInLists(); // Request for a refresh of the data through the server (starts an Async Task) refreshUsersOrGroupsListFromServer(); } @Override protected void onNewIntent(Intent intent) { // Verify the action and get the query if (Intent.ACTION_SEARCH.equals(intent.getAction())) { String query = intent.getStringExtra(SearchManager.QUERY); Log_OC.w(TAG, "Ignored Intent requesting to query for " + query); } else if (UsersAndGroupsSearchProvider.ACTION_SHARE_WITH.equals(intent.getAction())) { Uri data = intent.getData(); doShareWith(data.getLastPathSegment(), UsersAndGroupsSearchProvider.DATA_GROUP.equals(data.getAuthority())); } else { Log_OC.wtf(TAG, "Unexpected intent " + intent.toString()); } } private void doShareWith(String shareeName, boolean isGroup) { getFileOperationsHelper().shareFileWithSharee(getFile(), shareeName, (isGroup ? ShareType.GROUP : ShareType.USER)); } @Override public void showSearchUsersAndGroups() { // replace ShareFragment with SearchFragment on demand FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); Fragment searchFragment = SearchShareesFragment.newInstance(getFile(), getAccount()); ft.replace(R.id.share_fragment_container, searchFragment, TAG_SEARCH_FRAGMENT); ft.addToBackStack(null); // BACK button will recover the ShareFragment ft.commit(); } @Override // Call to Unshare operation public void unshareWith(OCShare share) { OCFile file = getFile(); getFileOperationsHelper().unshareFileWithUserOrGroup(file, share.getShareType(), share.getShareWith()); } /** * Get users and groups from the server to fill in the "share with" list */ @Override public void refreshUsersOrGroupsListFromServer() { // Show loading showLoadingDialog(getString(R.string.common_loading)); // Get Users and Groups GetShareWithUsersAsyncTask getTask = new GetShareWithUsersAsyncTask(this); Object[] params = { getFile(), getAccount(), getStorageManager() }; getTask.execute(params); } /** * Updates the view associated to the activity after the finish of some operation over files * in the current account. * * @param operation Removal operation performed. * @param result Result of the removal. */ @Override public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) { super.onRemoteOperationFinish(operation, result); if (result.isSuccess()) { Log_OC.d(TAG, "Refreshing lists on successful sync"); refreshUsersInLists(); } } private void refreshUsersInLists() { ShareFileFragment shareFileFragment = getShareFileFragment(); if (shareFileFragment != null) { // only if added to the view hierarchy!! if (shareFileFragment.isAdded()) { shareFileFragment.refreshUsersOrGroupsListFromDB(); } } SearchShareesFragment searchShareesFragment = getSearchFragment(); if (searchShareesFragment != null) { if (searchShareesFragment.isAdded()) { // only if added to the view hierarchy!! searchShareesFragment.refreshUsersOrGroupsListFromDB(); } } } /** * Shortcut to get access to the {@link ShareFileFragment} instance, if any * * @return A {@link ShareFileFragment} instance, or null */ private ShareFileFragment getShareFileFragment() { return (ShareFileFragment) getSupportFragmentManager().findFragmentByTag(TAG_SHARE_FRAGMENT); } /** * Shortcut to get access to the {@link SearchShareesFragment} instance, if any * * @return A {@link SearchShareesFragment} instance, or null */ private SearchShareesFragment getSearchFragment() { return (SearchShareesFragment) getSupportFragmentManager().findFragmentByTag(TAG_SEARCH_FRAGMENT); } }