Java tutorial
/* * Copyright 2012 CodeSlap * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.github.jobs.ui.fragment; import android.content.Intent; import android.os.Bundle; import android.os.IBinder; import android.os.Parcelable; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.inputmethod.EditorInfo; import android.widget.AdapterView; import android.widget.EditText; import android.widget.ListView; import android.widget.TextView; import com.actionbarsherlock.app.SherlockFragment; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuInflater; import com.actionbarsherlock.view.MenuItem; import com.codeslap.groundy.Groundy; import com.codeslap.groundy.ReceiverFragment; import com.github.jobs.R; import com.github.jobs.adapter.SOUsersAdapter; import com.github.jobs.bean.SOUser; import com.github.jobs.resolver.StackOverflowUserResolver; import com.github.jobs.ui.activity.SOUserPickerActivity; import com.github.jobs.ui.dialog.SOUserDialog; import java.util.ArrayList; import static android.app.Activity.RESULT_OK; /** * @author cristian * @version 1.0 */ public class SOUserPickerFragment extends SherlockFragment implements AdapterView.OnItemClickListener { private static final String KEY_USERS = "com.github.jobs.key.users"; private static final String KEY_SEARCH = "com.github.jobs.key.search"; private SOUserFetcherReceiver mSOUserFetcherReceiver; private SOUsersAdapter mAdapter; private EditText mUserSearch; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.so_user_picker, null, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setHasOptionsMenu(true); FragmentManager fm = getFragmentManager(); mSOUserFetcherReceiver = (SOUserFetcherReceiver) fm.findFragmentByTag(ReceiverFragment.TAG); if (mSOUserFetcherReceiver == null) { mSOUserFetcherReceiver = new SOUserFetcherReceiver(); fm.beginTransaction().add(mSOUserFetcherReceiver, ReceiverFragment.TAG).commitAllowingStateLoss(); } mUserSearch = (EditText) getView().findViewById(R.id.edit_user_search); mUserSearch.setOnEditorActionListener(new TextView.OnEditorActionListener() { @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == EditorInfo.IME_ACTION_SEARCH) { executeSearch(mUserSearch.getText().toString().trim()); return true; } return false; } }); ListView userList = (ListView) getView().findViewById(R.id.users_list); mAdapter = new SOUsersAdapter(getActivity()); if (savedInstanceState != null && savedInstanceState.containsKey(KEY_USERS)) { ArrayList<Parcelable> items = savedInstanceState.getParcelableArrayList(KEY_USERS); ArrayList<SOUser> users = new ArrayList<SOUser>(); for (Parcelable item : items) { users.add((SOUser) item); } mAdapter.updateItems(users); } userList.setOnItemClickListener(this); userList.setAdapter(mAdapter); String search = getActivity().getIntent().getStringExtra(SOUserPickerActivity.EXTRA_SEARCH); if (search == null) { if (savedInstanceState != null && savedInstanceState.containsKey(KEY_SEARCH)) { search = savedInstanceState.getString(KEY_SEARCH); mUserSearch.setText(search); mUserSearch.setSelection(search.length()); } else { search = ""; } } mUserSearch.setText(search); mUserSearch.setSelection(search.length()); if (savedInstanceState == null) { // this will execute search only the first time the activity is open executeSearch(search); } } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putParcelableArrayList(KEY_USERS, new ArrayList<SOUser>(mAdapter.getItems())); outState.putString(KEY_SEARCH, mUserSearch.getText().toString().trim()); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.base_search_menu, menu); } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { SOUser soUser = mAdapter.getItem(position); Intent soUserDialog = new Intent(getActivity(), SOUserDialog.class); soUserDialog.putExtra(SOUserPickerActivity.EXTRA_USER, soUser); startActivityForResult(soUserDialog, SOUserDialog.REQUEST_CODE); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); FragmentActivity activity = getActivity(); if (activity == null || !isAdded()) { return; } if (requestCode == SOUserDialog.REQUEST_CODE && resultCode == RESULT_OK) { activity.setResult(RESULT_OK, data); activity.finish(); } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_search: executeSearch(mUserSearch.getText().toString().trim()); break; } return super.onOptionsItemSelected(item); } private void executeSearch(String search) { Bundle extras = new Bundle(); extras.putString(StackOverflowUserResolver.EXTRA_SEARCH, search); Groundy.execute(getActivity(), StackOverflowUserResolver.class, mSOUserFetcherReceiver.getReceiver(), extras); } public IBinder getWindowToken() { return mUserSearch.getWindowToken(); } public void updateItems(ArrayList<SOUser> users) { mAdapter.updateItems(users); } }