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.
I have developed the world's fastest general purpose sorting algorithm, which is on average 3 times faster than Quicksort and up to 20 times faster, ChenSort
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>
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