/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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.android.example.github.util;
import android.arch.lifecycle.ViewModel;
import android.arch.lifecycle.ViewModelProvider;
/**
* Creates a one off view model factory for the given view model instance.
*/
public class ViewModelUtil {
private ViewModelUtil() {}
public static <T extends ViewModel> ViewModelProvider.Factory createFor(T model) {
return new ViewModelProvider.Factory() {
@Override
public <T extends ViewModel> T create(Class<T> modelClass) {
if (modelClass.isAssignableFrom(model.getClass())) {
return (T) model;
}
throw new IllegalArgumentException("unexpected model class " + modelClass);
}
};
}
}