Java tutorial
/* * This is the source code of Telegram for Android v. 1.3.2. * It is licensed under GNU GPL v. 2 or later. * You should have received a copy of the license in this archive (see LICENSE). * * Copyright Nikolai Kudashov, 2013. */ package org.telegram.ui; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.os.Bundle; import android.support.v4.internal.view.SupportMenuItem; import android.support.v7.app.ActionBar; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.ListView; import android.widget.TextView; import org.telegram.PhoneFormat.PhoneFormat; import org.telegram.messenger.LocaleController; import org.telegram.messenger.TLObject; import org.telegram.messenger.TLRPC; import org.telegram.messenger.ConnectionsManager; import org.telegram.messenger.MessagesController; import org.telegram.messenger.NotificationCenter; import org.telegram.messenger.R; import org.telegram.messenger.RPCRequest; import org.telegram.messenger.Utilities; import org.telegram.ui.Cells.ChatOrUserCell; import org.telegram.ui.Views.BaseFragment; import org.telegram.ui.Views.OnSwipeTouchListener; import java.util.ArrayList; import java.util.HashMap; public class SettingsBlockedUsers extends BaseFragment implements NotificationCenter.NotificationCenterDelegate, ContactsActivity.ContactsActivityDelegate { private ListView listView; private ListAdapter listViewAdapter; private boolean loading; private View progressView; private TextView emptyView; private ArrayList<TLRPC.TL_contactBlocked> blockedContacts = new ArrayList<TLRPC.TL_contactBlocked>(); private HashMap<Integer, TLRPC.TL_contactBlocked> blockedContactsDict = new HashMap<Integer, TLRPC.TL_contactBlocked>(); private int selectedUserId; private final static int block_user = 1; @Override public boolean onFragmentCreate() { super.onFragmentCreate(); NotificationCenter.getInstance().addObserver(this, MessagesController.updateInterfaces); loadBlockedContacts(0, 200); return true; } @Override public void onFragmentDestroy() { super.onFragmentDestroy(); NotificationCenter.getInstance().removeObserver(this, MessagesController.updateInterfaces); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (fragmentView == null) { fragmentView = inflater.inflate(R.layout.settings_blocked_users_layout, container, false); listViewAdapter = new ListAdapter(parentActivity); listView = (ListView) fragmentView.findViewById(R.id.listView); progressView = fragmentView.findViewById(R.id.progressLayout); emptyView = (TextView) fragmentView.findViewById(R.id.searchEmptyView); emptyView.setText(LocaleController.getString("NoBlocked", R.string.NoBlocked)); if (loading) { progressView.setVisibility(View.VISIBLE); emptyView.setVisibility(View.GONE); listView.setEmptyView(null); } else { progressView.setVisibility(View.GONE); listView.setEmptyView(emptyView); } listView.setAdapter(listViewAdapter); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { if (i < blockedContacts.size()) { UserProfileActivity fragment = new UserProfileActivity(); Bundle args = new Bundle(); args.putInt("user_id", blockedContacts.get(i).user_id); fragment.setArguments(args); ((LaunchActivity) parentActivity).presentFragment(fragment, "user_" + blockedContacts.get(i).user_id, false); } } }); listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) { if (i >= blockedContacts.size()) { return true; } selectedUserId = blockedContacts.get(i).user_id; AlertDialog.Builder builder = new AlertDialog.Builder(parentActivity); CharSequence[] items = new CharSequence[] { LocaleController.getString("Unblock", R.string.Unblock) }; builder.setItems(items, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { if (i == 0) { TLRPC.TL_contacts_unblock req = new TLRPC.TL_contacts_unblock(); TLRPC.User user = MessagesController.getInstance().users.get(selectedUserId); if (user == null) { return; } req.id = MessagesController.getInputUser(user); TLRPC.TL_contactBlocked blocked = blockedContactsDict.get(selectedUserId); blockedContactsDict.remove(selectedUserId); blockedContacts.remove(blocked); listViewAdapter.notifyDataSetChanged(); ConnectionsManager.getInstance().performRpc(req, new RPCRequest.RPCRequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { } }, null, true, RPCRequest.RPCRequestClassGeneric); } } }); builder.show().setCanceledOnTouchOutside(true); return true; } }); listView.setOnTouchListener(new OnSwipeTouchListener() { public void onSwipeRight() { finishFragment(true); } }); emptyView.setOnTouchListener(new OnSwipeTouchListener() { public void onSwipeRight() { finishFragment(true); } }); } else { ViewGroup parent = (ViewGroup) fragmentView.getParent(); if (parent != null) { parent.removeView(fragmentView); } } return fragmentView; } private void loadBlockedContacts(int offset, int count) { if (loading) { return; } loading = true; TLRPC.TL_contacts_getBlocked req = new TLRPC.TL_contacts_getBlocked(); req.offset = offset; req.limit = count; long requestId = ConnectionsManager.getInstance().performRpc(req, new RPCRequest.RPCRequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { if (error != null) { Utilities.RunOnUIThread(new Runnable() { @Override public void run() { loading = false; if (progressView != null) { progressView.setVisibility(View.GONE); } if (listView != null) { if (listView.getEmptyView() == null) { listView.setEmptyView(emptyView); } } if (listViewAdapter != null) { listViewAdapter.notifyDataSetChanged(); } } }); } final TLRPC.contacts_Blocked res = (TLRPC.contacts_Blocked) response; Utilities.RunOnUIThread(new Runnable() { @Override public void run() { loading = false; for (TLRPC.User user : res.users) { MessagesController.getInstance().users.put(user.id, user); } for (TLRPC.TL_contactBlocked blocked : res.blocked) { if (!blockedContactsDict.containsKey(blocked.user_id)) { blockedContacts.add(blocked); blockedContactsDict.put(blocked.user_id, blocked); } } if (progressView != null) { progressView.setVisibility(View.GONE); } if (listView != null) { if (listView.getEmptyView() == null) { listView.setEmptyView(emptyView); } } if (listViewAdapter != null) { listViewAdapter.notifyDataSetChanged(); } } }); } }, null, true, RPCRequest.RPCRequestClassGeneric); ConnectionsManager.getInstance().bindRequestToGuid(requestId, classGuid); } @Override public void didReceivedNotification(int id, Object... args) { if (id == MessagesController.updateInterfaces) { int mask = (Integer) args[0]; if ((mask & MessagesController.UPDATE_MASK_AVATAR) != 0 || (mask & MessagesController.UPDATE_MASK_NAME) != 0) { updateVisibleRows(mask); } } } private void updateVisibleRows(int mask) { if (listView == null) { return; } int count = listView.getChildCount(); for (int a = 0; a < count; a++) { View child = listView.getChildAt(a); if (child instanceof ChatOrUserCell) { ((ChatOrUserCell) child).update(mask); } } } @Override public void applySelfActionBar() { if (parentActivity == null) { return; } ActionBar actionBar = parentActivity.getSupportActionBar(); actionBar.setDisplayShowTitleEnabled(true); actionBar.setDisplayShowHomeEnabled(false); actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setDisplayUseLogoEnabled(false); actionBar.setDisplayShowCustomEnabled(false); actionBar.setSubtitle(null); actionBar.setCustomView(null); actionBar.setTitle(LocaleController.getString("BlockedUsers", R.string.BlockedUsers)); TextView title = (TextView) parentActivity.findViewById(R.id.action_bar_title); if (title == null) { final int subtitleId = parentActivity.getResources().getIdentifier("action_bar_title", "id", "android"); title = (TextView) parentActivity.findViewById(subtitleId); } if (title != null) { title.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0); title.setCompoundDrawablePadding(0); } ((LaunchActivity) parentActivity).fixBackButton(); } @Override public void onResume() { super.onResume(); if (isFinish) { return; } if (getActivity() == null) { return; } if (!firstStart && listViewAdapter != null) { listViewAdapter.notifyDataSetChanged(); } firstStart = false; ((LaunchActivity) parentActivity).showActionBar(); ((LaunchActivity) parentActivity).updateActionBar(); } public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { SupportMenuItem item = (SupportMenuItem) menu.add(Menu.NONE, block_user, Menu.NONE, null) .setIcon(R.drawable.plus); item.setShowAsAction(SupportMenuItem.SHOW_AS_ACTION_ALWAYS); } @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); switch (itemId) { case android.R.id.home: finishFragment(); break; case block_user: ContactsActivity fragment = new ContactsActivity(); fragment.animationType = 1; Bundle bundle = new Bundle(); bundle.putBoolean("onlyUsers", true); bundle.putBoolean("destroyAfterSelect", true); bundle.putBoolean("usersAsSections", true); bundle.putBoolean("returnAsResult", true); fragment.delegate = this; fragment.setArguments(bundle); ((LaunchActivity) parentActivity).presentFragment(fragment, "contacts_block", false); break; } return true; } @Override public void didSelectContact(TLRPC.User user) { if (user == null || blockedContactsDict.containsKey(user.id)) { return; } TLRPC.TL_contacts_block req = new TLRPC.TL_contacts_block(); req.id = MessagesController.getInputUser(user); TLRPC.TL_contactBlocked blocked = new TLRPC.TL_contactBlocked(); blocked.user_id = user.id; blocked.date = (int) (System.currentTimeMillis() / 1000); blockedContactsDict.put(blocked.user_id, blocked); blockedContacts.add(blocked); listViewAdapter.notifyDataSetChanged(); ConnectionsManager.getInstance().performRpc(req, new RPCRequest.RPCRequestDelegate() { @Override public void run(TLObject response, TLRPC.TL_error error) { } }, null, true, RPCRequest.RPCRequestClassGeneric); } private class ListAdapter extends BaseAdapter { private Context mContext; public ListAdapter(Context context) { mContext = context; } @Override public boolean areAllItemsEnabled() { return false; } @Override public boolean isEnabled(int i) { return i != blockedContacts.size(); } @Override public int getCount() { if (blockedContacts.isEmpty()) { return 0; } return blockedContacts.size() + 1; } @Override public Object getItem(int i) { return null; } @Override public long getItemId(int i) { return i; } @Override public boolean hasStableIds() { return false; } @Override public View getView(int i, View view, ViewGroup viewGroup) { int type = getItemViewType(i); if (type == 0) { if (view == null) { view = new ChatOrUserCell(mContext); ((ChatOrUserCell) view).usePadding = false; ((ChatOrUserCell) view).useSeparator = true; } TLRPC.User user = MessagesController.getInstance().users.get(blockedContacts.get(i).user_id); ((ChatOrUserCell) view).setData(user, null, null, null, user.phone != null && user.phone.length() != 0 ? PhoneFormat.getInstance().format("+" + user.phone) : "Unknown"); } else if (type == 1) { if (view == null) { LayoutInflater li = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); view = li.inflate(R.layout.settings_unblock_info_row_layout, viewGroup, false); TextView textView = (TextView) view.findViewById(R.id.info_text_view); textView.setText(LocaleController.getString("UnblockText", R.string.UnblockText)); registerForContextMenu(view); } } return view; } @Override public int getItemViewType(int i) { if (i == blockedContacts.size()) { return 1; } return 0; } @Override public int getViewTypeCount() { return 2; } @Override public boolean isEmpty() { return blockedContacts.isEmpty(); } } }