rxjava homework 2 sergey tarasov

app/build.gradle

@@ -29,6 +29,9 @@ android {
     kotlinOptions {
         jvmTarget = '1.8'
     }
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {

app/src/main/java/iam/thevoid/epic/timeapp/MainActivity.kt

@@ -1,10 +1,17 @@
 package iam.thevoid.epic.timeapp
 
-import androidx.appcompat.app.AppCompatActivity
+import android.annotation.SuppressLint
 import android.os.Bundle
-import android.widget.Button
-import android.widget.EditText
-import android.widget.TextView
+import android.text.format.DateUtils
+import androidx.appcompat.app.AppCompatActivity
+import iam.thevoid.epic.timeapp.databinding.ActivityMainBinding
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.core.Observable
+import io.reactivex.rxjava3.disposables.Disposable
+import io.reactivex.rxjava3.schedulers.Schedulers
+import java.text.SimpleDateFormat
+import java.util.*
+import java.util.concurrent.TimeUnit
 
 // Дан экран с готовой разметкой
 // Реализовать при помощи RxJava
@@ -27,34 +34,129 @@ import android.widget.TextView
 //       состояния паузы
 
 class MainActivity : AppCompatActivity() {
-
-    // Часы:
-    private lateinit var clockText: TextView
-
-    // Обратный отсчёт
-    private lateinit var countdownText: TextView
-    private lateinit var countdownSecondsEditText: EditText
-    private lateinit var countdownStartButton: Button
-
-    // Секундомер
-    private lateinit var stopwatchText: TextView
-    private lateinit var stopwatchMillisText: TextView
-    private lateinit var stopwatchStartButton: EditText
-    private lateinit var stopwatchEndButton: EditText
+    private lateinit var binding: ActivityMainBinding
+    private var disposableCountdownTimer: Disposable? = null
+    private var disposableStopWatchClock: Disposable? = null
+    private var stopwatchClockState = StopwatchClockState.STOP
+    private var milSecShift = 5L
+    private var lastMilSec = 0L
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+        setStopwatchClockBegin()
+        binding.countdownText.text = getTimeForCountdown(0L, 0L)
+    }
 
-        clockText = findViewById(R.id.clockText)
+    @SuppressLint("SetTextI18n")
+    override fun onStart() {
+        super.onStart()
+        // *************** Current Time Clock ***************
+        observableInterval().subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
+            .subscribe { binding.clockText.text = it }
+        // *************** CountDown Timer ***************
+        binding.countdownStartButton.setOnClickListener {
+            disposeCountdown()
+            val inputCountDownSeconds: Long = binding.countdownEditText
+                .text.toString().toLongOrNull() ?: 0L
+            disposableCountdownTimer = getTimerOfCountDown(inputCountDownSeconds)
+                .subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
+                .subscribe({item -> binding.countdownText.text = "[ $item ]"}, {})
+        }
+        // *************** StopWatch Clock ***************
+        binding.stopwatchStartButton.setOnClickListener {
+            when (stopwatchClockState) {
+                StopwatchClockState.STOP -> {
+                    stopwatchClockState = StopwatchClockState.RUN
+                    binding.stopwatchStartButton.text = "Start"
+                    binding.stopwatchEndButton.text = "Pause"
+                }
+                StopwatchClockState.PAUSE -> {
+                    stopwatchClockState = StopwatchClockState.RUN
+                    binding.stopwatchStartButton.text = "Start"
+                    binding.stopwatchEndButton.text = "Pause"
+                }
+                StopwatchClockState.RUN -> {
+                    lastMilSec = 0
+                }
+            }
+            disposeStopWatchClock()
+            disposableStopWatchClock = getStopwatchTimer(lastMilSec)
+                .subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
+                .subscribe {item ->
+                    binding.stopwatchText.text = item.first
+                    binding.stopwatchMillisText.text = item.second
+                    lastMilSec = item.third
+                }
+        }
+        binding.stopwatchEndButton.setOnClickListener {
+            disposeStopWatchClock()
+            when (stopwatchClockState) {
+                StopwatchClockState.RUN -> {
+                    stopwatchClockState = StopwatchClockState.PAUSE
+                    binding.stopwatchStartButton.text = "Resume"
+                    binding.stopwatchEndButton.text = "Reset"
+                }
+                StopwatchClockState.PAUSE -> {
+                    stopwatchClockState = StopwatchClockState.STOP
+                    lastMilSec = 0
+                    binding.stopwatchStartButton.text = "Start"
+                    binding.stopwatchEndButton.text = "Pause"
+                    setStopwatchClockBegin()
+                } else -> {setStopwatchClockBegin()}
+            }
+        }
+    }
 
-        countdownText = findViewById(R.id.countdownText)
-        countdownSecondsEditText = findViewById(R.id.countdownEditText)
-        countdownStartButton = findViewById(R.id.countdownStartButton)
+    // *************** get current time from observable and format it ***************
+    private fun observableInterval(): Observable<String> {
+        return Observable.interval(1000, TimeUnit.MILLISECONDS).map {
+            SimpleDateFormat("[ HH:mm:ss ]", Locale.GERMAN).format(Calendar.getInstance().time)
+        }
+    }
 
-        stopwatchText = findViewById(R.id.stopwatchText)
-        stopwatchMillisText = findViewById(R.id.stopwatchMillisText)
-        stopwatchStartButton = findViewById(R.id.stopwatchStartButton)
-        stopwatchEndButton = findViewById(R.id.stopwatchEndButton)
+    // *************** Time format for Timer Of CountDown ***************
+    private fun getTimeForCountdown(tmr: Long, v: Long): String {
+        return DateUtils.formatElapsedTime(tmr - v)
     }
+
+    // *************** Timer Of CountDown ***************
+    private fun getTimerOfCountDown(timeBeforeStop: Long): Observable<String> {
+        return Observable.interval(1000, TimeUnit.MILLISECONDS)
+            .takeWhile { it <= timeBeforeStop }
+            .map { time -> getTimeForCountdown(timeBeforeStop, time) }
+    }
+
+    private fun disposeCountdown() {
+        disposableCountdownTimer?.dispose(); disposableCountdownTimer = null
+    }
+
+    private fun disposeStopWatchClock() {
+        disposableStopWatchClock?.dispose(); disposableStopWatchClock = null
+    }
+
+    // *************** StopWatch beginning state ***************
+    private fun setStopwatchClockBegin() {
+        val info = getStopwatchClockTime(0L)
+        binding.stopwatchText.text = info.first
+        binding.stopwatchMillisText.text = info.second
+    }
+
+    // *************** Format Time for StopWatch Clock ***************
+    private fun getStopwatchClockTime(time: Long): Triple<String, String, Long> {
+        val part1 = String.format("[ %02d:%02d:%02d ]", TimeUnit.MILLISECONDS.toHours(time),
+            TimeUnit.MILLISECONDS.toMinutes(time) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(time)),
+            TimeUnit.MILLISECONDS.toSeconds(time) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(time)))
+        val part2 = String.format("[ %03d ]", time - TimeUnit.SECONDS.toMillis(TimeUnit.MILLISECONDS.toSeconds(time)))
+        return Triple(part1, part2, time)
+    }
+
+    private fun getStopwatchTimer(lastMilSec: Long): Observable<Triple<String, String, Long>> {
+        return Observable.interval(milSecShift, TimeUnit.MILLISECONDS)
+            .map { t -> getStopwatchClockTime(t * milSecShift + lastMilSec) }
+    }
+
+    enum class StopwatchClockState { RUN, PAUSE, STOP }
 }

app/src/main/res/layout/activity_main.xml

@@ -7,14 +7,15 @@
     android:orientation="vertical"
     tools:context=".MainActivity"
     tools:ignore="HardcodedText,LabelFor">
-
+    <!--real time clock-->
     <FrameLayout
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1">
 
         <TextView
             style="@style/TitleText"
+            android:textSize="20sp"
             android:text="Часы:" />
 
         <TextView
@@ -28,14 +29,15 @@
         android:layout_width="match_parent"
         android:layout_height="1dp"
         android:background="#ccc" />
-
+    <!--countdown timer-->
     <FrameLayout
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1">
 
         <TextView
             style="@style/TitleText"
+            android:textSize="20sp"
             android:text="Обратный отсчёт:" />
 
         <com.google.android.material.textfield.TextInputLayout
@@ -62,6 +64,7 @@
             android:layout_marginStart="16dp"
             android:layout_marginBottom="4dp"
             android:layout_gravity="bottom"
+            android:elevation="5dp"
             android:id="@+id/countdownStartButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
@@ -80,6 +83,7 @@
 
         <TextView
             style="@style/TitleText"
+            android:textSize="20sp"
             android:text="Секундомер:" />
 
         <androidx.constraintlayout.widget.ConstraintLayout
@@ -123,6 +127,7 @@
                 android:id="@+id/stopwatchStartButton"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:elevation="4dp"
                 android:text="Start" />
 
             <View
@@ -134,6 +139,7 @@
                 android:id="@+id/stopwatchEndButton"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:elevation="4dp"
                 android:text="Pause" />
         </LinearLayout>
     </FrameLayout>

app/src/main/res/values/themes.xml

@@ -1,6 +1,6 @@
 <resources xmlns:tools="http://schemas.android.com/tools">
     <!-- Base application theme. -->
-    <style name="Theme.MyApplication" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+    <style name="Theme.MyApplication" parent="Theme.AppCompat.DayNight.NoActionBar">
         <!-- Primary brand color. -->
         <item name="colorPrimary">@color/purple_500</item>
         <item name="colorPrimaryVariant">@color/purple_700</item>
@@ -10,7 +10,7 @@
         <item name="colorSecondaryVariant">@color/teal_700</item>
         <item name="colorOnSecondary">@color/black</item>
         <!-- Status bar color. -->
-        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <item name="android:statusBarColor" tools:targetApi="l">#45000000</item>
         <!-- Customize your theme here. -->
     </style>
 </resources>