Java tutorial
/* * Twittnuker - Twitter client for Android * * Copyright (C) 2013-2014 vanita5 <mail@vanita5.de> * * This program incorporates a modified version of Twidere. * 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 de.vanita5.twittnuker.fragment.support; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.res.Resources; import android.os.Bundle; import android.os.Parcelable; import android.support.v4.app.FragmentManager; import de.vanita5.twittnuker.R; import de.vanita5.twittnuker.model.ParcelableUser; import de.vanita5.twittnuker.model.ParcelableUserList; import de.vanita5.twittnuker.util.AsyncTwitterWrapper; import de.vanita5.twittnuker.util.ThemeUtils; import de.vanita5.twittnuker.util.Utils; public class DeleteUserListMembersDialogFragment extends BaseSupportDialogFragment implements DialogInterface.OnClickListener { public static final String FRAGMENT_TAG = "destroy_user_list_member"; @Override public void onClick(final DialogInterface dialog, final int which) { switch (which) { case DialogInterface.BUTTON_POSITIVE: final ParcelableUser[] users = getUsers(); final ParcelableUserList userList = getUserList(); final AsyncTwitterWrapper twitter = getTwitterWrapper(); if (users == null || userList == null || twitter == null) return; twitter.deleteUserListMembersAsync(userList.account_id, userList.id, users); break; default: break; } } @Override public Dialog onCreateDialog(final Bundle savedInstanceState) { final Context wrapped = ThemeUtils.getDialogThemedContext(getActivity()); final AlertDialog.Builder builder = new AlertDialog.Builder(wrapped); final ParcelableUser[] users = getUsers(); final ParcelableUserList userList = getUserList(); if (users == null || userList == null) throw new NullPointerException(); if (users.length == 1) { final ParcelableUser user = users[0]; final String displayName = Utils.getDisplayName(wrapped, user.id, user.name, user.screen_name); builder.setTitle(getString(R.string.delete_user, displayName)); builder.setMessage(getString(R.string.delete_user_from_list_confirm, displayName, userList.name)); } else { builder.setTitle(R.string.delete_users); final Resources res = getResources(); final String message = res.getQuantityString(R.plurals.delete_N_users_from_list_confirm, users.length, users.length, userList.name); builder.setMessage(message); } builder.setPositiveButton(android.R.string.ok, this); builder.setNegativeButton(android.R.string.cancel, null); return builder.create(); } private ParcelableUserList getUserList() { final Bundle args = getArguments(); if (!args.containsKey(EXTRA_USER_LIST)) return null; return args.getParcelable(EXTRA_USER_LIST); } private ParcelableUser[] getUsers() { final Bundle args = getArguments(); if (!args.containsKey(EXTRA_USERS)) return null; final Parcelable[] array = args.getParcelableArray(EXTRA_USERS); if (array == null) return null; final ParcelableUser[] users = new ParcelableUser[array.length]; for (int i = 0, j = users.length; i < j; i++) { users[i] = (ParcelableUser) array[i]; } return users; } public static DeleteUserListMembersDialogFragment show(final FragmentManager fm, final ParcelableUserList userList, final ParcelableUser... users) { final Bundle args = new Bundle(); args.putParcelable(EXTRA_USER_LIST, userList); args.putParcelableArray(EXTRA_USERS, users); final DeleteUserListMembersDialogFragment f = new DeleteUserListMembersDialogFragment(); f.setArguments(args); f.show(fm, FRAGMENT_TAG); return f; } }