Java tutorial
/* * Android Scan, an app for scanning and configuring HBM devices. * * The MIT License (MIT) * * Copyright (C) Stephan Gatzka * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.hbm.devices.scan.ui.android; import android.content.Intent; import android.support.annotation.NonNull; import android.support.design.widget.NavigationView; import android.support.v4.view.GravityCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.AppCompatActivity; import android.view.MenuItem; import android.view.View; import android.widget.ImageView; class ScanDrawer { protected final DrawerLayout drawerLayout; ScanDrawer(final AppCompatActivity act) { drawerLayout = act.findViewById(R.id.drawer_layout); final NavigationView view = act.findViewById(R.id.navigation_view); if (view != null) { view.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) { switch (menuItem.getItemId()) { case R.id.drawer_settings: act.startActivity(new Intent(act.getApplicationContext(), SettingsActivity.class)); return true; case R.id.drawer_about: act.startActivity(new Intent(act.getApplicationContext(), AboutActivity.class)); return true; default: drawerLayout.closeDrawers(); return true; } } }); final View headerView = view.getHeaderView(0); if (headerView != null) { final ImageView avatar = headerView.findViewById(R.id.avatar); if (avatar != null) { avatar.setPadding(0, getStatusBarHeight(act), 0, 0); } } } } boolean isOpen() { return drawerLayout.isDrawerOpen(GravityCompat.START); } void open() { drawerLayout.openDrawer(GravityCompat.START); } void close() { drawerLayout.closeDrawer(GravityCompat.START); } private int getStatusBarHeight(final AppCompatActivity activity) { int result = 0; final int resourceId = activity.getResources().getIdentifier("status_bar_height", "dimen", "android"); if (resourceId > 0) { result = activity.getResources().getDimensionPixelSize(resourceId); } return result; } }