Java tutorial
//package com.java2s; /* * Copyright (C) 2016 ?linson Santos Xavier <isoron@gmail.com> * * This file is part of Loop Habit Tracker. * * Loop Habit Tracker 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. * * Loop Habit Tracker 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/>. */ import android.content.*; import android.support.annotation.*; import android.util.*; public class Main { public static final String ISORON_NAMESPACE = "http://isoron.org/android"; public static boolean getBooleanAttribute(@NonNull Context context, @NonNull AttributeSet attrs, @NonNull String name, boolean defaultValue) { String boolText = getAttribute(context, attrs, name, null); if (boolText != null) return Boolean.parseBoolean(boolText); else return defaultValue; } @Nullable public static String getAttribute(@NonNull Context context, @NonNull AttributeSet attrs, @NonNull String name, @Nullable String defaultValue) { int resId = attrs.getAttributeResourceValue(ISORON_NAMESPACE, name, 0); if (resId != 0) return context.getResources().getString(resId); String value = attrs.getAttributeValue(ISORON_NAMESPACE, name); if (value != null) return value; else return defaultValue; } }