MMP_Architecture
More Modern Presenter.
A more lightweight and simpler to use MVVM architecture for Android, Data and views are two-way bound.
Only 300 lines of code.
Currently implemented using reflection, it can be optimized to automatically generate code using Gradle Plugin.
Example
Presenter
package cn.flutterfirst.mmp_architecture.main
import android.view.View
import cn.flutterfirst.mmp_architecture.State
import cn.flutterfirst.mmp_architecture.ViewClick
import cn.flutterfirst.mmp_architecture.mmp.BaseMMPActivity
abstract class MainPresenter : BaseMMPActivity() {
@State
protected var editValue: String? = null
get() {
if (field == null || field!!.isEmpty()) {
return ""
}
return field
}
@State
protected var count = 0
private val countMax = 5
private val countMin = 0
@State
protected var hintVisibility: Int? = null
get() {
if (count == countMax || count == countMin) {
return View.VISIBLE
}
return View.GONE
}
@State
protected var hintText: String? = null
get() {
return if (count == countMax) {
"Can't add any more"
} else {
"Can't sub any more"
}
}
@State
protected var addEnable: Boolean? = null
get() {
return count != countMax
}
@State
protected var subEnable: Boolean? = null
get() {
return count != countMin
}
@ViewClick
protected fun add() {
if (count == countMax) {
return
}
setState {
count++
}
}
@ViewClick
protected fun sub() {
if (count == countMin) {
return
}
setState {
count--
}
}
}
View
package cn.flutterfirst.mmp_architecture.main
import cn.flutterfirst.mmp_architecture.ContentView
import cn.flutterfirst.mmp_architecture.R
import cn.flutterfirst.mmp_architecture.StateChanged
@ContentView(R.layout.activity_main)
class MainActivity : MainPresenter() {
override fun initViewsBeforeFirstSetState() {
}
@StateChanged("count")
fun countChanged() {
println("count changed, new value = $count")
}
@StateChanged("editValue")
fun editValueChanged() {
println("editValue changed, new value = $editValue")
}
}
Layout
xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" tools:context=".main.MainActivity">
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginTop="50dp" android:textSize="20sp"
app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" app:vText="Your input: {{editValue}}" />
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginTop="50dp" android:text="One-way bound EditText"
android:textSize="20sp" app:layout_constraintBottom_toTopOf="@+id/one_way_bind_edit"
app:layout_constraintLeft_toLeftOf="@+id/one_way_bind_edit" />
<EditText android:id="@+id/one_way_bind_edit" android:layout_width="0dp"
android:layout_height="wrap_content" android:layout_marginHorizontal="50dp"
android:layout_marginTop="150dp" app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent"
app:vEdit="{{editValue}}" />
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginTop="50dp" android:text="Two-way bound EditText"
android:textSize="20sp" app:layout_constraintBottom_toTopOf="@+id/two_way_bind_edit"
app:layout_constraintLeft_toLeftOf="@+id/two_way_bind_edit" />
<EditText android:id="@+id/two_way_bind_edit" android:layout_width="0dp"
android:layout_height="wrap_content" android:layout_marginHorizontal="50dp"
android:layout_marginTop="250dp" app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent"
app:vEditText="{{editValue}}" />
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:textSize="50sp" app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" app:vText="{{count}}" />
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginBottom="180dp" android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" app:vText="{{hintText}}"
app:vVisible="{{hintVisibility}}" />
<Button android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginBottom="100dp" android:text="Add"
app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" app:vClick="{{add}}"
app:vEnable="{{addEnable}}" />
<Button android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginBottom="50dp" android:text="Sub"
app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" app:vClick="{{sub}}"
app:vEnable="{{subEnable}}" />
androidx.constraintlayout.widget.ConstraintLayout>
MIT License
Copyright (c) 2022 hackware1993
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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