📬 The LifecycleModel class is designed to store and manage UI-related data in a lifecycle conscious way, the LifecycleModel class allows data to survive configuration changes such as screen rotations, it also handles the communication of the Activity / Fragment with the rest of the application, base on https://developer.android.google.cn/topic/libraries/architecture/viewmodel.html
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Description:
LifecycleModel
The LifecycleModel class is designed to store and manage UI-related data in a lifecycle conscious way, the LifecycleModel class allows data to survive configuration changes such as screen rotations, it also handles the communication of the Activity / Fragment with the rest of the application, base on ViewModel
Introduction
LifecycleModel 基于 Google 在 2017 年 I/O 大会上发布的 Android 架构组件中的 ViewModel, 可以帮助 Activity 和 Fragment 储存和管理一些与 UI 相关以及他们必需的数据, 避免数据在屏幕旋转或配置更改时发生的数据丢失, 还可以帮助开发者轻易实现 Fragment 与 Fragment 之间, Activity 与 Fragment 之间的通讯以及共享数据, 因为我看到 Google 让 MVVM 框架中的 ViewModel 具有了这些功能, 所以我也想让 MVP 框架中的 Presenter, 乃至其他更多的模块都具有这些功能, 所以 LifecycleModel 诞生了
Lifecycle
Download
implementation 'me.jessyan:lifecyclemodel:1.0.1'
Usage
Step 1
public class UserLifecycleModel implements LifecycleModel { private int id; public UserLifecycleModel(int id) { this.id = id; } void doAction() { } @Override public void onCleared() { //release resources } }
Step 2
//Put data LifecycleModelProviders.of(activity/fragment).put(UserLifecycleModel.class.getName(), new UserLifecycleModel(1)); //Get data LifecycleModelProviders.of(activity/fragment).get(UserLifecycleModel.class.getName()); //Remove data LifecycleModelProviders.of(activity/fragment).remove(UserLifecycleModel.class.getName());
Communication of the Activity / Fragment
public class UserLifecycleModel implements LifecycleModel { private Subject<String, String> mSubject = PublishSubject.create(); public void doAction(String s) { mSubject.onNext(s); } public void addAction(Action1<String> action) { mSubject.subscribe(action); } } public class AFragment extends Fragment { @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); UserLifecycleModel lifecycleModel = LifecycleModelProviders.of(getActivity()).get(UserLifecycleModel.class.getName()); lifecycleModel.addAction(new Action1<String>() { @Override public void call(String s) { // Update the UI. } }); } } public class BFragment extends Fragment { @Override public void onStart() { super.onStart(); UserLifecycleModel lifecycleModel = LifecycleModelProviders.of(getActivity()).get(UserLifecycleModel.class.getName()); lifecycleModel.doAction("JessYan"); } }
About Me
- Email: jess.yan.effort@gmail.com
- Home: http://jessyan.me
- 掘金: https://gold.xitu.io/user/57a9dbd9165abd0061714613
- 简书: http://www.jianshu.com/u/1d0c0bc634db
License
Copyright 2017, jessyan 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.
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