Android Data Binding Command
Command design pattern implementation for Android Data Binding
Demo
How to start?
Step 1. Add it in your root build.gradle at the end of repositories:
allprojects {
repositories {
...
maven { url "https://jitpack.io" }
}
}Step 2. Add the dependency
dependencies {
compile 'com.github.radzio:android-data-binding-command:1.0.4'
}Share this release:
Make sure that you are using Android Data Binding
- In your main build.gradle you have gradle plugin 1.5.0 or newer:
classpath 'com.android.tools.build:gradle:1.5.0'- In your app build.gradle you've enabled databinding:
dataBinding {
enabled = true
}Add to your code
Modify your layout, add bind:command="@{viewModel.myCommand}"
<android.support.design.widget.FloatingActionButton
bind:command="@{viewModel.myCommand}"
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:src="@android:drawable/ic_dialog_email"/>Add in your binding class
public ICommand myCommand = new Command()
{
@Override
public void execute()
{
MainActivityViewModel.this.view.showMessage("Hello from Command!");
}
};Command features
Each command implements ICommand interface
public interface ICommand extends Observable
{
@Bindable
boolean isEnabled();
void isEnabled(boolean isEnabled);
@Bindable
boolean isRefreshing();
void isRefreshing(boolean isRefreshing);
void execute();
}You can use isEnabled and isRefreshing properties in your java code and xml layouts:
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button2"
android:layout_below="@+id/button"
bind:command="@{viewModel.enableButtonCommand}"
android:text="@{viewModel.buttonCommand.enabled ? `Disable Timer` : `Enable Timer`}"
android:enabled="@{viewModel.buttonCommand.refreshing == false}"
android:layout_centerHorizontal="true"/>