Java tutorial
/* * Twidere - Twitter client for Android * * Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * 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 org.mariotaku.twidere.fragment; import android.app.Activity; import android.app.Dialog; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.nfc.NdefMessage; import android.nfc.NdefRecord; import android.nfc.NfcAdapter.CreateNdefMessageCallback; import android.nfc.NfcEvent; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.LoaderManager; import android.support.v4.app.LoaderManager.LoaderCallbacks; import android.support.v4.content.AsyncTaskLoader; import android.support.v4.content.Loader; import android.support.v7.app.AlertDialog; import android.text.TextUtils; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.CheckBox; import com.rengwuxian.materialedittext.MaterialEditText; import com.squareup.otto.Subscribe; import org.mariotaku.microblog.library.MicroBlog; import org.mariotaku.microblog.library.MicroBlogException; import org.mariotaku.microblog.library.twitter.model.UserList; import org.mariotaku.microblog.library.twitter.model.UserListUpdate; import org.mariotaku.twidere.R; import org.mariotaku.twidere.activity.AccountSelectorActivity; import org.mariotaku.twidere.activity.UserListSelectorActivity; import org.mariotaku.twidere.adapter.SupportTabsAdapter; import org.mariotaku.twidere.fragment.iface.IBaseFragment.SystemWindowsInsetsCallback; import org.mariotaku.twidere.fragment.iface.SupportFragmentCallback; import org.mariotaku.twidere.model.ParcelableUser; import org.mariotaku.twidere.model.ParcelableUserList; import org.mariotaku.twidere.model.SingleResponse; import org.mariotaku.twidere.model.UserKey; import org.mariotaku.twidere.model.message.UserListSubscriptionEvent; import org.mariotaku.twidere.model.message.UserListUpdatedEvent; import org.mariotaku.twidere.model.util.ParcelableUserListUtils; import org.mariotaku.twidere.text.validator.UserListNameValidator; import org.mariotaku.twidere.util.AsyncTwitterWrapper; import org.mariotaku.twidere.util.IntentUtils; import org.mariotaku.twidere.util.LinkCreator; import org.mariotaku.twidere.util.MenuUtils; import org.mariotaku.twidere.util.MicroBlogAPIFactory; import org.mariotaku.twidere.util.ParseUtils; import org.mariotaku.twidere.util.Utils; public class UserListFragment extends AbsToolbarTabPagesFragment implements OnClickListener, LoaderCallbacks<SingleResponse<ParcelableUserList>>, SystemWindowsInsetsCallback, SupportFragmentCallback { private boolean mUserListLoaderInitialized; private ParcelableUserList mUserList; public void displayUserList(final ParcelableUserList userList) { final FragmentActivity activity = getActivity(); if (activity == null) return; getLoaderManager().destroyLoader(0); mUserList = userList; if (userList != null) { activity.setTitle(userList.name); } else { activity.setTitle(R.string.user_list); } invalidateOptionsMenu(); } public void getUserListInfo(final boolean omitIntentExtra) { final LoaderManager lm = getLoaderManager(); lm.destroyLoader(0); final Bundle args = new Bundle(getArguments()); args.putBoolean(EXTRA_OMIT_INTENT_EXTRA, omitIntentExtra); if (!mUserListLoaderInitialized) { lm.initLoader(0, args, this); mUserListLoaderInitialized = true; } else { lm.restartLoader(0, args, this); } } @Override public void onActivityResult(final int requestCode, final int resultCode, final Intent data) { final AsyncTwitterWrapper twitter = mTwitterWrapper; switch (requestCode) { case REQUEST_SELECT_USER: { final ParcelableUserList userList = mUserList; if (resultCode != Activity.RESULT_OK || !data.hasExtra(EXTRA_USER) || twitter == null || userList == null) return; final ParcelableUser user = data.getParcelableExtra(EXTRA_USER); twitter.addUserListMembersAsync(userList.account_key, userList.id, user); return; } case REQUEST_SELECT_ACCOUNT: { if (resultCode == Activity.RESULT_OK) { if (data == null || !data.hasExtra(EXTRA_ID)) return; final ParcelableUserList userList = mUserList; final UserKey accountKey = data.getParcelableExtra(EXTRA_ACCOUNT_KEY); IntentUtils.openUserListDetails(getActivity(), accountKey, userList.id, userList.user_key, userList.user_screen_name, userList.name); } break; } } super.onActivityResult(requestCode, resultCode, data); } @Override public void onActivityCreated(final Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); final FragmentActivity activity = getActivity(); setHasOptionsMenu(true); Utils.setNdefPushMessageCallback(activity, new CreateNdefMessageCallback() { @Override public NdefMessage createNdefMessage(NfcEvent event) { final ParcelableUserList userList = getUserList(); if (userList == null) return null; return new NdefMessage(new NdefRecord[] { NdefRecord.createUri( LinkCreator.getTwitterUserListLink(userList.user_screen_name, userList.name)), }); } }); getUserListInfo(false); } @Override protected void addTabs(SupportTabsAdapter adapter) { final Bundle args = getArguments(), tabArgs = new Bundle(); if (args.containsKey(EXTRA_USER_LIST)) { final ParcelableUserList userList = args.getParcelable(EXTRA_USER_LIST); assert userList != null; tabArgs.putParcelable(EXTRA_ACCOUNT_KEY, userList.account_key); tabArgs.putParcelable(EXTRA_USER_KEY, userList.user_key); tabArgs.putString(EXTRA_SCREEN_NAME, userList.user_screen_name); tabArgs.putString(EXTRA_LIST_ID, userList.id); tabArgs.putString(EXTRA_LIST_NAME, userList.name); } else { tabArgs.putParcelable(EXTRA_ACCOUNT_KEY, args.getParcelable(EXTRA_ACCOUNT_KEY)); tabArgs.putParcelable(EXTRA_USER_KEY, args.getParcelable(EXTRA_USER_KEY)); tabArgs.putString(EXTRA_SCREEN_NAME, args.getString(EXTRA_SCREEN_NAME)); tabArgs.putString(EXTRA_LIST_ID, args.getString(EXTRA_LIST_ID)); tabArgs.putString(EXTRA_LIST_NAME, args.getString(EXTRA_LIST_NAME)); } adapter.addTab(UserListTimelineFragment.class, tabArgs, getString(R.string.statuses), null, 0, null); adapter.addTab(UserListMembersFragment.class, tabArgs, getString(R.string.members), null, 1, null); adapter.addTab(UserListSubscribersFragment.class, tabArgs, getString(R.string.subscribers), null, 2, null); } public ParcelableUserList getUserList() { return mUserList; } @Override public void onStart() { super.onStart(); mBus.register(this); } @Override public void onStop() { mBus.unregister(this); super.onStop(); } @Override public void onDestroyView() { mUserList = null; getLoaderManager().destroyLoader(0); super.onDestroyView(); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.menu_user_list, menu); } @Override public void onPrepareOptionsMenu(Menu menu) { final ParcelableUserList userList = mUserList; MenuUtils.setMenuItemAvailability(menu, R.id.info, userList != null); menu.removeGroup(MENU_GROUP_USER_LIST_EXTENSION); if (userList != null) { final boolean isMyList = userList.user_key.equals(userList.account_key); final boolean isFollowing = userList.is_following; MenuUtils.setMenuItemAvailability(menu, R.id.edit, isMyList); MenuUtils.setMenuItemAvailability(menu, R.id.follow, !isMyList); MenuUtils.setMenuItemAvailability(menu, R.id.add, isMyList); MenuUtils.setMenuItemAvailability(menu, R.id.delete, isMyList); final MenuItem followItem = menu.findItem(R.id.follow); if (isFollowing) { followItem.setIcon(R.drawable.ic_action_cancel); followItem.setTitle(R.string.unsubscribe); } else { followItem.setIcon(R.drawable.ic_action_add); followItem.setTitle(R.string.subscribe); } final Intent extensionsIntent = new Intent(INTENT_ACTION_EXTENSION_OPEN_USER_LIST); extensionsIntent.setExtrasClassLoader(getActivity().getClassLoader()); extensionsIntent.putExtra(EXTRA_USER_LIST, userList); MenuUtils.addIntentToMenu(getActivity(), menu, extensionsIntent, MENU_GROUP_USER_LIST_EXTENSION); } else { MenuUtils.setMenuItemAvailability(menu, R.id.edit, false); MenuUtils.setMenuItemAvailability(menu, R.id.follow, false); MenuUtils.setMenuItemAvailability(menu, R.id.add, false); MenuUtils.setMenuItemAvailability(menu, R.id.delete, false); } } @Override public boolean onOptionsItemSelected(final MenuItem item) { final AsyncTwitterWrapper twitter = mTwitterWrapper; final ParcelableUserList userList = mUserList; if (twitter == null || userList == null) return false; switch (item.getItemId()) { case R.id.add: { if (!userList.user_key.equals(userList.account_key)) return false; final Intent intent = new Intent(INTENT_ACTION_SELECT_USER); intent.setClass(getActivity(), UserListSelectorActivity.class); intent.putExtra(EXTRA_ACCOUNT_KEY, userList.account_key); startActivityForResult(intent, REQUEST_SELECT_USER); break; } case R.id.delete: { if (!userList.user_key.equals(userList.account_key)) return false; DestroyUserListDialogFragment.show(getFragmentManager(), userList); break; } case R.id.edit: { final Bundle args = new Bundle(); args.putParcelable(EXTRA_ACCOUNT_KEY, userList.account_key); args.putString(EXTRA_LIST_NAME, userList.name); args.putString(EXTRA_DESCRIPTION, userList.description); args.putBoolean(EXTRA_IS_PUBLIC, userList.is_public); args.putString(EXTRA_LIST_ID, userList.id); final DialogFragment f = new EditUserListDialogFragment(); f.setArguments(args); f.show(getFragmentManager(), "edit_user_list_details"); return true; } case R.id.follow: { if (userList.is_following) { DestroyUserListSubscriptionDialogFragment.show(getFragmentManager(), userList); } else { twitter.createUserListSubscriptionAsync(userList.account_key, userList.id); } return true; } case R.id.open_with_account: { final Intent intent = new Intent(INTENT_ACTION_SELECT_ACCOUNT); intent.setClass(getActivity(), AccountSelectorActivity.class); intent.putExtra(EXTRA_SINGLE_SELECTION, true); startActivityForResult(intent, REQUEST_SELECT_ACCOUNT); break; } default: { if (item.getIntent() != null) { try { startActivity(item.getIntent()); } catch (final ActivityNotFoundException e) { Log.w(LOGTAG, e); return false; } } break; } } return true; } @Override public void onClick(final View view) { switch (view.getId()) { case R.id.error_container: { getUserListInfo(true); break; } case R.id.profile_image: { final ParcelableUserList userList = mUserList; if (userList == null) return; IntentUtils.openUserProfile(getActivity(), userList.account_key, userList.user_key, userList.user_screen_name, null, mPreferences.getBoolean(KEY_NEW_DOCUMENT_API), null); break; } } } @Override public Loader<SingleResponse<ParcelableUserList>> onCreateLoader(final int id, final Bundle args) { final UserKey accountKey = args.getParcelable(EXTRA_ACCOUNT_KEY); final UserKey userKey = args.getParcelable(EXTRA_USER_KEY); final String listId = args.getString(EXTRA_LIST_ID); final String listName = args.getString(EXTRA_LIST_NAME); final String screenName = args.getString(EXTRA_SCREEN_NAME); final boolean omitIntentExtra = args.getBoolean(EXTRA_OMIT_INTENT_EXTRA, true); return new ParcelableUserListLoader(getActivity(), omitIntentExtra, getArguments(), accountKey, listId, listName, userKey, screenName); } @Override public void onLoadFinished(final Loader<SingleResponse<ParcelableUserList>> loader, final SingleResponse<ParcelableUserList> data) { if (data == null) return; if (getActivity() == null) return; if (data.hasData()) { final ParcelableUserList list = data.getData(); displayUserList(list); } else if (data.hasException()) { } } @Override public void onLoaderReset(final Loader<SingleResponse<ParcelableUserList>> loader) { } @Subscribe public void onUserListUpdated(UserListUpdatedEvent event) { if (mUserList == null) return; if (TextUtils.equals(event.getUserList().id, mUserList.id)) { getUserListInfo(true); } } @Subscribe public void onUserListSubscriptionChanged(UserListSubscriptionEvent event) { if (mUserList == null) return; if (TextUtils.equals(event.getUserList().id, mUserList.id)) { getUserListInfo(true); } } public static class EditUserListDialogFragment extends BaseDialogFragment implements DialogInterface.OnClickListener { private String mName, mDescription; private UserKey mAccountKey; private String mListId; private boolean mIsPublic; @Override public void onClick(final DialogInterface dialog, final int which) { switch (which) { case DialogInterface.BUTTON_POSITIVE: { final AlertDialog alertDialog = (AlertDialog) dialog; final MaterialEditText editName = (MaterialEditText) alertDialog.findViewById(R.id.name); final MaterialEditText editDescription = (MaterialEditText) alertDialog .findViewById(R.id.description); final CheckBox editIsPublic = (CheckBox) alertDialog.findViewById(R.id.is_public); assert editName != null && editDescription != null && editIsPublic != null; final String name = ParseUtils.parseString(editName.getText()); final String description = ParseUtils.parseString(editDescription.getText()); final boolean isPublic = editIsPublic.isChecked(); if (TextUtils.isEmpty(name)) return; final UserListUpdate update = new UserListUpdate(); update.setMode(isPublic ? UserList.Mode.PUBLIC : UserList.Mode.PRIVATE); update.setName(name); update.setDescription(description); mTwitterWrapper.updateUserListDetails(mAccountKey, mListId, update); break; } } } @NonNull @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { final Bundle bundle = savedInstanceState == null ? getArguments() : savedInstanceState; mAccountKey = bundle != null ? bundle.<UserKey>getParcelable(EXTRA_ACCOUNT_KEY) : null; mListId = bundle != null ? bundle.getString(EXTRA_LIST_ID) : null; mName = bundle != null ? bundle.getString(EXTRA_LIST_NAME) : null; mDescription = bundle != null ? bundle.getString(EXTRA_DESCRIPTION) : null; mIsPublic = bundle == null || bundle.getBoolean(EXTRA_IS_PUBLIC, true); final Context context = getActivity(); final AlertDialog.Builder builder = new AlertDialog.Builder(context); builder.setView(R.layout.dialog_user_list_detail_editor); builder.setTitle(R.string.user_list); builder.setPositiveButton(android.R.string.ok, this); builder.setNegativeButton(android.R.string.cancel, this); final AlertDialog dialog = builder.create(); dialog.setOnShowListener(new DialogInterface.OnShowListener() { @Override public void onShow(DialogInterface dialog) { AlertDialog alertDialog = (AlertDialog) dialog; MaterialEditText editName = (MaterialEditText) alertDialog.findViewById(R.id.name); MaterialEditText editDescription = (MaterialEditText) alertDialog .findViewById(R.id.description); CheckBox editPublic = (CheckBox) alertDialog.findViewById(R.id.is_public); assert editName != null && editDescription != null && editPublic != null; editName.addValidator(new UserListNameValidator(getString(R.string.invalid_list_name))); if (mName != null) { editName.setText(mName); } if (mDescription != null) { editDescription.setText(mDescription); } editPublic.setChecked(mIsPublic); } }); return dialog; } @Override public void onSaveInstanceState(final Bundle outState) { outState.putParcelable(EXTRA_ACCOUNT_KEY, mAccountKey); outState.putString(EXTRA_LIST_ID, mListId); outState.putString(EXTRA_LIST_NAME, mName); outState.putString(EXTRA_DESCRIPTION, mDescription); outState.putBoolean(EXTRA_IS_PUBLIC, mIsPublic); super.onSaveInstanceState(outState); } } static class ParcelableUserListLoader extends AsyncTaskLoader<SingleResponse<ParcelableUserList>> { private final boolean mOmitIntentExtra; private final Bundle mExtras; private final UserKey mAccountKey; private final UserKey mUserKey; private final String mListId; private final String mScreenName, mListName; private ParcelableUserListLoader(final Context context, final boolean omitIntentExtra, final Bundle extras, final UserKey accountKey, final String listId, final String listName, final UserKey userKey, final String screenName) { super(context); mOmitIntentExtra = omitIntentExtra; mExtras = extras; mAccountKey = accountKey; mUserKey = userKey; mListId = listId; mScreenName = screenName; mListName = listName; } @Override public SingleResponse<ParcelableUserList> loadInBackground() { if (!mOmitIntentExtra && mExtras != null) { final ParcelableUserList cache = mExtras.getParcelable(EXTRA_USER_LIST); if (cache != null) return SingleResponse.getInstance(cache); } final MicroBlog twitter = MicroBlogAPIFactory.getInstance(getContext(), mAccountKey, true); if (twitter == null) return SingleResponse.getInstance(); try { final UserList list; if (mListId != null) { list = twitter.showUserList(mListId); } else if (mUserKey != null) { list = twitter.showUserList(mListName, mUserKey.getId()); } else if (mScreenName != null) { list = twitter.showUserListByScrenName(mListName, mScreenName); } else return SingleResponse.getInstance(); return SingleResponse.getInstance(ParcelableUserListUtils.from(list, mAccountKey)); } catch (final MicroBlogException e) { return SingleResponse.getInstance(e); } } @Override public void onStartLoading() { forceLoad(); } } }