# MVVMLight
**Repository Path**: wimhu/MVVMLight
## Basic Information
- **Project Name**: MVVMLight
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-04-08
- **Last Updated**: 2024-11-24
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# MVVM Light Toolkit
---
[](https://android-arsenal.com/details/1/3737)
A toolkit help to build Android MVVM Application，We have more
attributes for Data Binding of View(like Uri for ImageView) ,we create some command for deal with event( like click of Button),also have a global message pipe to communicate with other ViewModel.
##Download##
```groovy
compile 'com.kelin.mvvmlight:library:1.0.0'
```
requires at least android gradle plugin 1.5.0.
##Usage##
---
####中文文档：[MVVM Light Toolkit使用指南](http://www.jianshu.com/p/43ea7a531700)####
####引申阅读：[如何构建Android MVVM应用程序](http://www.jianshu.com/p/2fc41a310f79)####
###Data Binding###
Binding URI to the ImageView with bind:uri will make it loading bitmap from URI and render to ImageView automatically.
```xml
```
Fresco.initialize(this) is require,because of loading image use Fresco default).
```java
public class MyApp extends Application {
@Override
public void onCreate() {
super.onCreate();
Fresco.initialize(this);
}
```
---
**Example**
---
AdapterView like ListView、RecyclerView 、ViewPager is convenient, bind it to the collection view with app:items and app:itemView,You should use an ObservableList to automatically update your view based on list changes.
```xml
itemViewModel = new ObservableArrayList<>();
public final ItemView itemView = ItemView.of(BR.viewModel, R.layout.layoutitem_list_view);
```
Adapter，ViewHolder ..is Not Required:
---
**Example**
---
**Other attributes supported:**
- *ImageView*
```xml
```
- *ListView*、*ViewPager*、*RecyclerView*
```xml
```
- *ViewGroup*
```xml
```
- *EditText*
```xml
```
- *SimpleDraweeView*
```xml
```
- *WebView*
```xml
```
###Command Binding###
---
When RecyclerView scroll to end of list,we have onLoadMoreCommand to deal with event.
```xml
```
In ViewModel define a ReplyCommand field to deal with this event.
```java
public final ReplyCommand loadMoreCommand = new ReplyCommand<>(
(count) -> {
/*count: count of list items*/
int page=count / LIMIT +1;
loadData(page)
});
```
---
**Example**
---
Deal with click event of View is more convenient:
```xml
```
In ViewModel define a ReplyCommand btnClickCommand will be call when click event occur.
```java
public ReplyCommand btnClickCommand = new ReplyCommand(() -> {
do something...
});
```
---
**Example**
---
**onRefreshCommand to SwipeRefreshLayout**
---
More command binding is supported:
- *View*
```xml
```
- *ListView*、*RecyclerView*
```xml
```
- *ViewPager*
```xml
```
- *EditText*
```xml
```
- *ImageView*
```xml
```
- *ScrollView*、*NestedScrollView*
```xml
```
- *SwipeRefreshLayout*
```xml
```
###Messenger###
---
**simplifies the communication between ViewModel(major) or any components**
---
**Example**
---
- global message broadcast without deliver data
```java
/* TOKEN: like Action of broadcast with who register this token will be notified when event occur.*/
Messenger.Default().sendNoMsg(TOKEN);
/*context: it usually to be a activity ，this parameter is represent to
a receiver which is mean for convenient when unregister message.
TOKEN: like Action of broadcast with who register this token will be notified when event occur.
(data)->{ }:Action to deal with event. */
Messenger.Default().register(context, TOKEN, () -> { });
```
- global message broadcast (carry data to receiver)
```java
Messenger.getDefault().send(data, TOKEN)
/*context:
TOKEN:
Data.class: type of deliver data.
(data)->{ }: function to deal with event which has data is deliver by sender.*/
Messenger.getDefault().register(context, TOKEN, Data.class, (data) -> { });
```
- send to specify target (inactive)
```java
Messenger.getDefault().sendToTarget(T message, R target)
Messenger.getDefault().sendNoMsgToTargetWithToken(Object token,R target)
Messenger.getDefault().sendNoMsgToTarget(Object target)
```
- cancel register
```java
Messenger.getDefault().unregister(Object recipient)"
/* Usually Usage*/
@Override
protected void onDestroy() {
super.onDestroy();
Messenger.getDefault().unregister(this);
}
```
## License
```
Copyright 2016 Kelin Hong
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.
```