Java tutorial
/* * Copyright 2012 Google Inc. * * 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 net.abcdroid.devfest12.ui; import net.abcdroid.devfest12.provider.ScheduleContract; import net.abcdroid.devfest12.provider.ScheduleContract.Sessions; import net.abcdroid.devfest12.util.BeamUtils; import net.abcdroid.devfest12.util.ReflectionUtils; import net.abcdroid.devfest12.util.UIUtils; import com.google.analytics.tracking.android.EasyTracker; import net.abcdroid.devfest12.R; import com.actionbarsherlock.view.Menu; import com.actionbarsherlock.view.MenuItem; import android.annotation.TargetApi; import android.app.AlertDialog; import android.app.SearchManager; import android.content.DialogInterface; import android.content.Intent; import android.net.Uri; import android.nfc.NfcAdapter; import android.nfc.NfcEvent; import android.os.Build; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.text.Html; import android.widget.SearchView; import static net.abcdroid.devfest12.util.LogUtils.LOGD; /** * An activity that shows session search results. This activity can be either single * or multi-pane, depending on the device configuration. */ public class SearchActivity extends BaseActivity implements SessionsFragment.Callbacks { private boolean mTwoPane; private SessionsFragment mSessionsFragment; private Fragment mDetailFragment; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_search); mTwoPane = (findViewById(R.id.fragment_container_detail) != null); FragmentManager fm = getSupportFragmentManager(); mSessionsFragment = (SessionsFragment) fm.findFragmentById(R.id.fragment_container_master); if (mSessionsFragment == null) { mSessionsFragment = new SessionsFragment(); fm.beginTransaction().add(R.id.fragment_container_master, mSessionsFragment).commit(); } mDetailFragment = fm.findFragmentById(R.id.fragment_container_detail); } @Override protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); onNewIntent(getIntent()); } @Override public void onNewIntent(Intent intent) { setIntent(intent); String query = intent.getStringExtra(SearchManager.QUERY); setTitle(Html.fromHtml(getString(R.string.title_search_query, query))); mSessionsFragment.reloadFromArguments( intentToFragmentArguments(new Intent(Intent.ACTION_VIEW, Sessions.buildSearchUri(query)))); EasyTracker.getTracker().trackView("Search: " + query); LOGD("Tracker", "Search: " + query); updateDetailBackground(); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); getSupportMenuInflater().inflate(R.menu.search, menu); setupSearchMenuItem(menu); return true; } @TargetApi(Build.VERSION_CODES.HONEYCOMB) private void setupSearchMenuItem(Menu menu) { final MenuItem searchItem = menu.findItem(R.id.menu_search); if (searchItem != null && UIUtils.hasHoneycomb()) { SearchView searchView = (SearchView) searchItem.getActionView(); if (searchView != null) { SearchManager searchManager = (SearchManager) getSystemService(SEARCH_SERVICE); searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName())); searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { @Override public boolean onQueryTextSubmit(String s) { ReflectionUtils.tryInvoke(searchItem, "collapseActionView"); return false; } @Override public boolean onQueryTextChange(String s) { return false; } }); searchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() { @Override public boolean onSuggestionSelect(int i) { return false; } @Override public boolean onSuggestionClick(int i) { ReflectionUtils.tryInvoke(searchItem, "collapseActionView"); return false; } }); } } } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_search: if (!UIUtils.hasHoneycomb()) { startSearch(null, false, Bundle.EMPTY, false); return true; } break; } return super.onOptionsItemSelected(item); } private void updateDetailBackground() { if (mTwoPane) { findViewById(R.id.fragment_container_detail) .setBackgroundResource((mDetailFragment == null) ? R.drawable.grey_frame_on_white_empty_sessions : R.drawable.grey_frame_on_white); } } @Override public boolean onSessionSelected(String sessionId) { Uri sessionUri = ScheduleContract.Sessions.buildSessionUri(sessionId); Intent detailIntent = new Intent(Intent.ACTION_VIEW, sessionUri); if (mTwoPane) { BeamUtils.setBeamSessionUri(this, sessionUri); trySetBeamCallback(); SessionDetailFragment fragment = new SessionDetailFragment(); fragment.setArguments(BaseActivity.intentToFragmentArguments(detailIntent)); getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container_detail, fragment) .commit(); mDetailFragment = fragment; updateDetailBackground(); return true; } else { startActivity(detailIntent); return false; } } @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH) private void trySetBeamCallback() { if (UIUtils.hasICS()) { BeamUtils.setBeamCompleteCallback(this, new NfcAdapter.OnNdefPushCompleteCallback() { @Override public void onNdefPushComplete(NfcEvent event) { // Beam has been sent if (!BeamUtils.isBeamUnlocked(SearchActivity.this)) { BeamUtils.setBeamUnlocked(SearchActivity.this); runOnUiThread(new Runnable() { @Override public void run() { showFirstBeamDialog(); } }); } } }); } } private void showFirstBeamDialog() { new AlertDialog.Builder(this).setTitle(R.string.just_beamed).setMessage(R.string.beam_unlocked_session) .setNegativeButton(R.string.close, null) .setPositiveButton(R.string.view_beam_session, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface di, int i) { BeamUtils.launchBeamSession(SearchActivity.this); di.dismiss(); } }).create().show(); } }