Java tutorial
/* * Copyright 2017 SchedJoules * * * 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 com.schedjoules.eventdiscovery.framework.serialization.commons; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import com.schedjoules.eventdiscovery.framework.serialization.core.Key; import com.schedjoules.eventdiscovery.framework.utils.factory.AbstractLazy; import com.schedjoules.eventdiscovery.framework.utils.factory.Factory; import org.dmfs.optional.NullSafe; /** * Represents an argument in a parameterizable container (Bundle or Intent practically). * * @author Gabor Keszthelyi */ public final class Argument<T> extends AbstractLazy<T> { public Argument(final Key<T> key, final Bundle bundle) { super(new Factory<T>() { @Override public T create() { return new OptionalArgument<>(key, bundle).value(); } }); } public Argument(Key<T> key, Intent intent) { this(key, new NestedBundle(intent).get()); } public Argument(Key<T> key, Activity activity) { this(key, activity.getIntent()); } public Argument(Key<T> key, Fragment fragment) { this(key, new NullSafe<>(fragment.getArguments()).value(Bundle.EMPTY)); } }