Java tutorial
/* * Copyright (c) 2015, . * * 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.bosong.framework.presenter; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.View; import android.view.ViewGroup; import com.bosong.framework.view.IDelegate; public abstract class FragmentPresenter<T extends IDelegate> extends Fragment { public T viewDelegate; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); try { viewDelegate = getDelegateClass().newInstance(); } catch (java.lang.InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } } @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreateView(inflater, container, savedInstanceState); viewDelegate.create(inflater, container, savedInstanceState); return viewDelegate.getRootView(); } @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); viewDelegate.initWidget(); bindEventListener(); } protected void bindEventListener() { } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); if (viewDelegate.getOptionsMenuId() != 0) { inflater.inflate(viewDelegate.getOptionsMenuId(), menu); } } @Override public void onViewStateRestored(@Nullable Bundle savedInstanceState) { super.onViewStateRestored(savedInstanceState); if (viewDelegate == null) { try { viewDelegate = getDelegateClass().newInstance(); } catch (java.lang.InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } } } @Override public void onDestroy() { super.onDestroy(); viewDelegate = null; } protected abstract Class<T> getDelegateClass(); }