Java tutorial
/** * Copyright (C) 2015 Open Whisper Systems * * 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 com.tingtingapps.securesms; import android.content.Context; import android.graphics.Rect; import android.os.AsyncTask; import android.os.Bundle; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.widget.Toolbar; import android.text.Editable; import android.text.InputType; import android.text.TextWatcher; import android.util.Log; import android.view.TouchDelegate; import android.view.View; import android.widget.EditText; import android.widget.ImageView; import android.widget.LinearLayout; import com.tingtingapps.securesms.components.AnimatingToggle; import com.tingtingapps.securesms.crypto.MasterSecret; import com.tingtingapps.securesms.util.DirectoryHelper; import com.tingtingapps.securesms.util.DynamicLanguage; import com.tingtingapps.securesms.util.DynamicNoActionBarTheme; import com.tingtingapps.securesms.util.DynamicTheme; import com.tingtingapps.securesms.util.ServiceUtil; import java.io.IOException; import java.lang.ref.WeakReference; /** * Base activity container for selecting a list of contacts. * * @author Moxie Marlinspike * */ public abstract class ContactSelectionActivity extends PassphraseRequiredActionBarActivity implements SwipeRefreshLayout.OnRefreshListener, ContactSelectionListFragment.OnContactSelectedListener { private static final String TAG = ContactSelectionActivity.class.getSimpleName(); public final static String PUSH_ONLY_EXTRA = "push_only"; private final DynamicTheme dynamicTheme = new DynamicNoActionBarTheme(); private final DynamicLanguage dynamicLanguage = new DynamicLanguage(); protected ContactSelectionListFragment contactsFragment; private Toolbar toolbar; private EditText searchText; private AnimatingToggle toggle; protected ImageView action; private ImageView keyboardToggle; private ImageView dialpadToggle; private ImageView clearToggle; private LinearLayout toggleContainer; @Override protected void onPreCreate() { dynamicTheme.onCreate(this); dynamicLanguage.onCreate(this); } @Override protected void onCreate(Bundle icicle, MasterSecret masterSecret) { setContentView(R.layout.contact_selection_activity); initializeToolbar(); initializeResources(); initializeSearch(); } @Override public void onResume() { super.onResume(); dynamicTheme.onResume(this); dynamicLanguage.onResume(this); } private void initializeToolbar() { this.toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(false); getSupportActionBar().setDisplayShowTitleEnabled(false); } private void initializeResources() { this.action = (ImageView) findViewById(R.id.action_icon); this.searchText = (EditText) findViewById(R.id.search_view); this.toggle = (AnimatingToggle) findViewById(R.id.button_toggle); this.keyboardToggle = (ImageView) findViewById(R.id.search_keyboard); this.dialpadToggle = (ImageView) findViewById(R.id.search_dialpad); this.clearToggle = (ImageView) findViewById(R.id.search_clear); this.toggleContainer = (LinearLayout) findViewById(R.id.toggle_container); contactsFragment = (ContactSelectionListFragment) getSupportFragmentManager() .findFragmentById(R.id.contact_selection_list_fragment); contactsFragment.setOnContactSelectedListener(this); contactsFragment.setOnRefreshListener(this); this.keyboardToggle.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { searchText.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PERSON_NAME); ServiceUtil.getInputMethodManager(ContactSelectionActivity.this).showSoftInput(searchText, 0); displayTogglingView(dialpadToggle); } }); this.dialpadToggle.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { searchText.setInputType(InputType.TYPE_CLASS_PHONE); ServiceUtil.getInputMethodManager(ContactSelectionActivity.this).showSoftInput(searchText, 0); displayTogglingView(keyboardToggle); } }); this.clearToggle.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { searchText.setText(""); if (SearchUtil.isTextInput(searchText)) displayTogglingView(dialpadToggle); else displayTogglingView(keyboardToggle); } }); expandTapArea(toolbar, action, 500); expandTapArea(toggleContainer, dialpadToggle, 500); } private void initializeSearch() { this.searchText.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void afterTextChanged(Editable s) { if (!SearchUtil.isEmpty(searchText)) displayTogglingView(clearToggle); else if (SearchUtil.isTextInput(searchText)) displayTogglingView(dialpadToggle); else if (SearchUtil.isPhoneInput(searchText)) displayTogglingView(keyboardToggle); contactsFragment.setQueryFilter(searchText.getText().toString()); } }); } @Override public void onRefresh() { new RefreshDirectoryTask(this).execute(getApplicationContext()); } @Override public void onContactSelected(String number) { } private void displayTogglingView(View view) { toggle.display(view); expandTapArea(toggleContainer, view, 500); } private void expandTapArea(final View container, final View child, final int padding) { container.post(new Runnable() { @Override public void run() { Rect rect = new Rect(); child.getHitRect(rect); rect.top -= padding; rect.left -= padding; rect.right += padding; rect.bottom += padding; container.setTouchDelegate(new TouchDelegate(rect, child)); } }); } private static class SearchUtil { public static boolean isTextInput(EditText editText) { return (editText.getInputType() & InputType.TYPE_MASK_CLASS) == InputType.TYPE_CLASS_TEXT; } public static boolean isPhoneInput(EditText editText) { return (editText.getInputType() & InputType.TYPE_MASK_CLASS) == InputType.TYPE_CLASS_PHONE; } public static boolean isEmpty(EditText editText) { return editText.getText().length() <= 0; } } private static class RefreshDirectoryTask extends AsyncTask<Context, Void, Void> { private final WeakReference<ContactSelectionActivity> activity; private RefreshDirectoryTask(ContactSelectionActivity activity) { this.activity = new WeakReference<>(activity); } @Override protected Void doInBackground(Context... params) { try { DirectoryHelper.refreshDirectory(params[0]); } catch (IOException e) { Log.w(TAG, e); } return null; } @Override protected void onPostExecute(Void result) { ContactSelectionActivity activity = this.activity.get(); if (activity != null && !activity.isFinishing()) { activity.searchText.setText(""); activity.contactsFragment.resetQueryFilter(); } } } }