Java tutorial
/* * Copyright (C) 2013-2014 Dominik Schrmann <dominik@dominikschuermann.de> * * 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.sufficientlysecure.keychain.ui; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.preference.PreferenceActivity; import android.support.v4.app.Fragment; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputMethodManager; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.TextView; import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.util.ContactHelper; import org.sufficientlysecure.keychain.util.Log; import org.sufficientlysecure.keychain.util.Preferences; import java.util.List; /** * Consists of the search bar, search button, and search settings button */ public class ImportKeysCloudFragment extends Fragment { public static final String ARG_QUERY = "query"; public static final String ARG_DISABLE_QUERY_EDIT = "disable_query_edit"; public static final String ARG_CLOUD_SEARCH_PREFS = "cloud_search_prefs"; private ImportKeysActivity mImportActivity; private AutoCompleteTextView mQueryEditText; /** * Creates new instance of this fragment * * @param query query to search for * @param disableQueryEdit if true, user cannot edit query * @param cloudSearchPrefs search parameters to use. If null will retrieve from user's * preferences. */ public static ImportKeysCloudFragment newInstance(String query, boolean disableQueryEdit, Preferences.CloudSearchPrefs cloudSearchPrefs) { ImportKeysCloudFragment frag = new ImportKeysCloudFragment(); Bundle args = new Bundle(); args.putString(ARG_QUERY, query); args.putBoolean(ARG_DISABLE_QUERY_EDIT, disableQueryEdit); args.putParcelable(ARG_CLOUD_SEARCH_PREFS, cloudSearchPrefs); frag.setArguments(args); return frag; } /** * Inflate the layout for this fragment */ @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.import_keys_cloud_fragment, container, false); mQueryEditText = (AutoCompleteTextView) view.findViewById(R.id.cloud_import_server_query); ContactHelper contactHelper = new ContactHelper(getActivity()); List<String> namesAndEmails = contactHelper.getContactNames(); namesAndEmails.addAll(contactHelper.getContactMails()); mQueryEditText.setThreshold(3); mQueryEditText.setAdapter( new ArrayAdapter<>(getActivity(), android.R.layout.simple_spinner_dropdown_item, namesAndEmails)); View searchButton = view.findViewById(R.id.cloud_import_server_search); searchButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { search(mQueryEditText.getText().toString()); } }); mQueryEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() { @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == EditorInfo.IME_ACTION_SEARCH) { search(mQueryEditText.getText().toString()); // Don't return true to let the keyboard close itself after pressing search return false; } return false; } }); View configButton = view.findViewById(R.id.cloud_import_server_config_button); configButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(mImportActivity, SettingsActivity.class); intent.putExtra(PreferenceActivity.EXTRA_SHOW_FRAGMENT, SettingsActivity.CloudSearchPrefsFragment.class.getName()); startActivity(intent); } }); return view; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); // set displayed values if (getArguments() != null) { String query = getArguments().getString(ARG_QUERY); if (query != null) { mQueryEditText.setText(query, TextView.BufferType.EDITABLE); Log.d(Constants.TAG, "query: " + query); } else { // open keyboard mQueryEditText.requestFocus(); toggleKeyboard(true); } if (getArguments().getBoolean(ARG_DISABLE_QUERY_EDIT, false)) { mQueryEditText.setEnabled(false); } } } @Override public void onAttach(Activity activity) { super.onAttach(activity); mImportActivity = (ImportKeysActivity) activity; } private void search(String query) { Preferences.CloudSearchPrefs cloudSearchPrefs = getArguments().getParcelable(ARG_CLOUD_SEARCH_PREFS); // no explicit search preferences passed if (cloudSearchPrefs == null) { cloudSearchPrefs = Preferences.getPreferences(getActivity()).getCloudSearchPrefs(); } mImportActivity.loadCallback(new ImportKeysListFragment.CloudLoaderState(query, cloudSearchPrefs)); toggleKeyboard(false); } private void toggleKeyboard(boolean show) { if (getActivity() == null) { return; } InputMethodManager inputManager = (InputMethodManager) getActivity() .getSystemService(Context.INPUT_METHOD_SERVICE); // check if no view has focus View v = getActivity().getCurrentFocus(); if (v == null) { return; } if (show) { inputManager.showSoftInput(v, InputMethodManager.SHOW_IMPLICIT); } else { inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0); } } }