onClick

app/src/main/AndroidManifest.xml

@@ -3,6 +3,11 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="ru.panorobot.airshot">
 
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"

app/src/main/java/ru/panorobot/airshot/MainActivity.kt

@@ -1,13 +1,96 @@
 package ru.panorobot.airshot
 
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.bluetooth.BluetoothAdapter
+import android.content.Intent
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.widget.Toast
+import kotlinx.android.synthetic.main.activity_main.*
+
+// Почему не получалось обратиться к элементам формы напрямую
+// https://stackoverflow.com/questions/52271521/import-kotlinx-android-synthetic-main-activity-main-is-not-working
+//
 
 class MainActivity : AppCompatActivity() {
+    private val REQUEST_CODE_ENABLE_BT:Int = 1
+
+    // bluetooth adapter
+    lateinit var bAdapter:BluetoothAdapter
+
+    @SuppressLint("MissingPermission")
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-//        setContentView(R.layout.activity_main)
+        setContentView(R.layout.activity_main)
-        val draw2D = Draw2D(this)
+
-        setContentView(draw2D)
+        // bluetooth adapter
+        bAdapter = BluetoothAdapter.getDefaultAdapter()
+        // check is on/off
+        if(bAdapter == null){
+            bluetoothStatusTV.text = "Bluetooht is not available"
+        }
+        else{
+            bluetoothStatusTV.text = "Bluetooht is available"
+        }
+        // Статус bluetooth
+        if (bAdapter.isEnabled){
+            bluetoothIv.setImageResource(R.drawable.ic_bluetooth_on)
+        }
+        else{
+            bluetoothIv.setImageResource(R.drawable.ic_bluetooth_off)
+        }
+
+        // Включаем bluetooth
+        turnOnBtn.setOnClickListener {
+            if (bAdapter.isEnabled){
+                // Уже включен
+                Toast.makeText(this, "Already on", Toast.LENGTH_LONG).show()
+            }
+            else{
+                // Включаем
+                var intent = Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE)
+                startActivityForResult(intent, REQUEST_CODE_ENABLE_BT)
+            }
+        }
+        // Выключаем bluetooth
+        turnOffBtn.setOnClickListener {
+
+        }
+        // Ищем bluetooth
+        discoverableBtn.setOnClickListener {
+
+        }
+
+
+
+
+
+
+
+ // ******************************************       startShooting()
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        when(requestCode){
+            REQUEST_CODE_ENABLE_BT ->
+                if (requestCode == Activity.RESULT_OK){
+                    bluetoothIv.setImageResource(R.drawable.ic_bluetooth_on) // 14:14
+                    Toast.makeText(this, "Bluetooth is on", Toast.LENGTH_LONG).show()
+                }
+            else{
+                    Toast.makeText(this, "Could not on bluetooth", Toast.LENGTH_LONG).show()
+                }
+
+        }
+        super.onActivityResult(requestCode, resultCode, data)
+    }
+
+    private fun startShooting() {
+        val target = Target(this)
+        target.setOnClickListener {
+            target.invalidate()
+        }
+        setContentView(target)
     }
 }

app/src/main/java/ru/panorobot/airshot/Target.kt

@@ -7,29 +7,35 @@ import android.graphics.Canvas
 import android.graphics.Color
 import android.graphics.Paint
 import android.view.View
-import kotlin.random.Random
 
-class Draw2D(context: Context?) : View(context) {
+class Target(context: Context?) : View(context) {
+
     private val paint: Paint = Paint()
     private val shots:Shots = Shots()
 
-    override fun setOnClickListener(l: OnClickListener?) {
+//    override fun setOnTouchListener(l: OnTouchListener?) {
-        super.setOnClickListener(l)
+////        super.setOnTouchListener(l)
-        invalidate()
+////        invalidate()
-    }
+//    }
+//
+//    override fun setOnClickListener(l: OnClickListener?) {
+////        super.setOnClickListener(l)
+////        invalidate()
+//    }
+
+
 
     override fun onDraw(canvas: Canvas?) {
         super.onDraw(canvas)
         val screenWidth: Int = getWidth()
         val screenHeight: Int = getHeight()
 
-        drawTarget(canvas)
+        drawTarget(canvas, screenWidth, screenHeight)
         shots.draw(canvas,screenWidth, screenHeight)
-
     }
 
 
-    private fun drawTarget(canvas: Canvas?) {
+    private fun drawTarget(canvas: Canvas?, screenWidth: Int, screenHeight: Int) {
         paint.apply {
             style = Paint.Style.FILL // стиль Заливка
             color = Color.WHITE // закрашиваем холст белым цветом
@@ -41,28 +47,26 @@ class Draw2D(context: Context?) : View(context) {
             color = Color.BLACK
         }
 
-        val screenWidth: Int = getWidth()
-        val screenHeight: Int = getHeight()
         val centerX = width / 2
         val centerY = height / 2
 
-        var radiusSun: Int = (screenWidth + screenHeight) / 30
+        var radiusApple: Int = (screenWidth + screenHeight) / 30
-        canvas!!.drawCircle(centerX.toFloat(), centerY.toFloat(), radiusSun.toFloat(), paint)
+        canvas!!.drawCircle(centerX.toFloat(), centerY.toFloat(), radiusApple.toFloat(), paint)
 
         paint.apply {
             style = Paint.Style.STROKE
         }
-        var radius = radiusSun * 2
+        var radius = radiusApple * 2
-        canvas!!.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
+        canvas.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
 
-        radius = radiusSun * 3
+        radius = radiusApple * 3
-        canvas!!.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
+        canvas.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
 
-        radius = radiusSun * 4
+        radius = radiusApple * 4
-        canvas!!.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
+        canvas.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
 
-        radius = radiusSun * 5
+        radius = radiusApple * 5
-        canvas!!.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
+        canvas.drawCircle(centerX.toFloat(), centerY.toFloat(), radius.toFloat(), paint)
     }
 
 

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

@@ -1,18 +1,63 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout 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"
+    android:orientation="vertical"
+    android:gravity="center_horizontal"
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/bluetoothStatusTV"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text=""
+        android:padding="5dp"
+        android:textAlignment="center"
+        android:textColor="#000"
+        android:textSize="20sp"/>
+    <ImageView
+        android:id="@+id/bluetoothIv"
+        android:layout_width="100dp"
+        android:layout_height="100dp"
+        android:src="@drawable/ic_bluetooth_off"/>
+    <Button
+        android:id="@+id/turnOnBtn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
+        style="@style/Widget.AppCompat.Button.Colored"
-        app:layout_constraintBottom_toBottomOf="parent"
+        android:text="Turn On"
-        app:layout_constraintEnd_toEndOf="parent"
+        android:minWidth="200dp"/>
-        app:layout_constraintStart_toStartOf="parent"
+    <Button
-        app:layout_constraintTop_toTopOf="parent" />
+        android:id="@+id/turnOffBtn"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        style="@style/Widget.AppCompat.Button.Colored"
+        android:text="Turn Off"
+        android:minWidth="200dp"/>
+    <Button
+        android:id="@+id/discoverableBtn"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        style="@style/Widget.AppCompat.Button.Colored"
+        android:text="Discoverable"
+        android:minWidth="200dp"/>
+    <Button
+        android:id="@+id/pairedBtn"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        style="@style/Widget.AppCompat.Button.Colored"
+        android:text="Get Paired Devices"
+        android:minWidth="200dp"/>
+    <TextView
+        android:id="@+id/pairedTv"
+        android:padding="5dp"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textColor="#000"/>
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+
+
+
+</LinearLayout>