Week8 thread handler looper

app/build.gradle

@@ -7,8 +7,8 @@ android {
     compileSdk 32
 
     defaultConfig {
-        applicationId "com.example.coroutine"
-        minSdk 21
+        applicationId "com.lee989898.myapplication"
+        minSdk 26
         targetSdk 32
         versionCode 1
         versionName "1.0"
@@ -29,14 +29,17 @@ android {
     kotlinOptions {
         jvmTarget = '1.8'
     }
+    buildFeatures {
+        dataBinding true
+    }
 }
 
 dependencies {
 
     implementation 'androidx.core:core-ktx:1.7.0'
-    implementation 'androidx.appcompat:appcompat:1.4.1'
-    implementation 'com.google.android.material:material:1.6.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
+    implementation 'androidx.appcompat:appcompat:1.4.2'
+    implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

app/src/androidTest/java/com/example/coroutine/ExampleInstrumentedTest.kt → app/src/androidTest/java/com/lee989898/myapplication/ExampleInstrumentedTest.kt

@@ -1,4 +1,4 @@
-package com.example.coroutine
+package com.lee989898.myapplication
 
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
@@ -19,6 +19,6 @@ class ExampleInstrumentedTest {
     fun useAppContext() {
         // Context of the app under test.
         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("com.example.coroutine", appContext.packageName)
+        assertEquals("com.lee989898.myapplication", appContext.packageName)
     }
 }

app/src/main/AndroidManifest.xml

@@ -1,7 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    package="com.example.coroutine">
+    package="com.lee989898.myapplication">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
     <application
         android:allowBackup="true"
@@ -11,7 +14,7 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.Coroutine"
+        android:theme="@style/Theme.MyApplication"
         tools:targetApi="31">
         <activity
             android:name=".MainActivity"

app/src/main/java/com/lee989898/myapplication/ConvertBitMap.kt

@@ -0,0 +1,34 @@
+package com.lee989898.myapplication
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.util.Base64
+import java.io.ByteArrayOutputStream
+
+class ConvertBitMap {
+    fun BitmapToString(bitmap: Bitmap): String {
+        val baos =
+            ByteArrayOutputStream() //바이트 배열을 차례대로 읽어 들이기위한 ByteArrayOutputStream클래스 선언, 차례대로 받지 않으면 어떤 일이 일어날까요?
+        bitmap.compress(Bitmap.CompressFormat.PNG, 70, baos) //bitmap을 압축 (숫자 70은 70%로 압축한다는 뜻, 몇으로 해야 좋은지는 잘 모르겠음)
+        val bytes = baos.toByteArray() //해당 bitmap을 byte배열로 바꿔준다.
+        return Base64.encodeToString(bytes, Base64.DEFAULT) //Base 64 방식으로byte 배열을 String으로 변환
+    }
+
+    fun StringToBitmap(encodedString: String?): Bitmap? {
+        return try {
+            val encodeByte: ByteArray = Base64.decode(
+                encodedString,
+                Base64.DEFAULT
+            ) // String 화 된 이미지를  base64방식으로 인코딩하여 byte배열을 만듬
+            BitmapFactory.decodeByteArray(
+                encodeByte,
+                0,
+                encodeByte.size
+            ) //byte배열을 bitmapfactory 메소드를 이용하여 비트맵으로 바꿔준다.
+            //만들어진 bitmap을 return
+        } catch (e: Exception) {
+            e.message
+            null // 안되면 어쩔 수 없이 null 보내야죵.. res에서 placeholder같은거 하나 보내도 좋을듯
+        }
+    }
+}

app/src/main/java/com/lee989898/myapplication/MainActivity.kt

@@ -0,0 +1,110 @@
+package com.lee989898.myapplication
+
+import android.annotation.SuppressLint
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.os.*
+import androidx.appcompat.app.AppCompatActivity
+import androidx.databinding.DataBindingUtil
+import com.lee989898.myapplication.databinding.ActivityMainBinding
+import java.io.IOException
+import java.io.InputStream
+import java.net.HttpURLConnection
+import java.net.URL
+
+class MainActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityMainBinding
+    private lateinit var myHandler: Handler
+    var count = 0
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        myHandler = MyHandler()
+        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
+
+        binding.btn1.setOnClickListener {
+            BackgroundThread1().start()
+        }
+        binding.btn2.setOnClickListener {
+            BackgroundThread2().start()
+        }
+        binding.img.setOnClickListener {
+            BackgroundThread3().start()
+        }
+    }
+
+    @SuppressLint("HandlerLeak")
+    inner class MyHandler : Handler(Looper.getMainLooper()) {
+        override fun handleMessage(msg: Message) {
+            // 다른 Thread에서 전달받은 Message 처리
+            val getBundle = msg.data
+            val img = getBundle.getString("image")
+            img.let {
+                binding.img.post {
+                    binding.img.setImageBitmap(ConvertBitMap().StringToBitmap(it))
+                }
+            }
+            binding.count.text = getBundle.getInt("count").toString()
+        }
+    }
+
+    inner class BackgroundThread1 : Thread() {
+        override fun run() {
+            //implement Image 1
+            val minho = getBitmapFromURL("https://avatars.githubusercontent.com/u/15981307?v=4")
+            val bundle = Bundle()
+            bundle.putString("image", minho?.let { ConvertBitMap().BitmapToString(minho) })
+            val msg = myHandler.obtainMessage()
+            with(msg) {
+                data = bundle
+                SystemClock.sleep(2000)
+                myHandler.sendMessage(this)
+            }
+        }
+    }
+    inner class BackgroundThread2 : Thread() {
+        override fun run() {
+            //implement Image 2
+            val joonKyung = getBitmapFromURL("https://avatars.githubusercontent.com/u/15981307?v=4")
+            val bundle = Bundle()
+            bundle.putString("image", joonKyung?.let { ConvertBitMap().BitmapToString(joonKyung) })
+            val msg = myHandler.obtainMessage()
+            with(msg) {
+                data = bundle
+                SystemClock.sleep(2000)
+                myHandler.sendMessage(this)
+            }
+        }
+    }
+    inner class BackgroundThread3 : Thread() {
+        override fun run() {
+            //implement Count
+            while (isAlive) {
+                val bundle = Bundle()
+                val msg = myHandler.obtainMessage()
+                count++
+                bundle.putInt("count", count)
+                with(msg) {
+                    data = bundle
+                    SystemClock.sleep(1000)
+                    myHandler.sendMessage(this)
+                }
+            }
+        }
+    }
+
+    private fun getBitmapFromURL(src: String): Bitmap? {
+        return try {
+            val url = URL(src)
+            val connection: HttpURLConnection = url.openConnection() as HttpURLConnection
+            connection.doInput= true  //읽기모드임
+            connection.connect()
+            val input: InputStream = connection.inputStream
+            BitmapFactory.decodeStream(input)
+        } catch (e: IOException) {
+            e.printStackTrace()
+            null
+        }
+    }
+}

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

@@ -1,18 +1,53 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<layout 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=".MainActivity">
-
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
-
-</androidx.constraintlayout.widget.ConstraintLayout>
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <data>
+
+    </data>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".MainActivity">
+
+        <ImageView
+            android:id="@+id/img"
+            android:layout_width="100dp"
+            android:layout_height="100dp"
+            android:layout_marginTop="100dp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/count"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/img" />
+
+        <Button
+            android:id="@+id/btn1"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="20dp"
+            android:layout_marginTop="20dp"
+            android:text="버튼1"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/count" />
+
+        <Button
+            android:id="@+id/btn2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            android:layout_marginEnd="20dp"
+            android:text="버튼2"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/count" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</layout>

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

@@ -1,6 +1,6 @@
 <resources xmlns:tools="http://schemas.android.com/tools">
     <!-- Base application theme. -->
-    <style name="Theme.Coroutine" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+    <style name="Theme.MyApplication" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
         <!-- Primary brand color. -->
         <item name="colorPrimary">@color/purple_200</item>
         <item name="colorPrimaryVariant">@color/purple_700</item>

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

@@ -1,3 +1,3 @@
 <resources>
-    <string name="app_name">Coroutine</string>
+    <string name="app_name">My Application</string>
 </resources>

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.Coroutine" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+    <style name="Theme.MyApplication" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
         <!-- Primary brand color. -->
         <item name="colorPrimary">@color/purple_500</item>
         <item name="colorPrimaryVariant">@color/purple_700</item>

app/src/test/java/com/example/coroutine/ExampleUnitTest.kt → app/src/test/java/com/lee989898/myapplication/ExampleUnitTest.kt

@@ -1,4 +1,4 @@
-package com.example.coroutine
+package com.lee989898.myapplication
 
 import org.junit.Test
 

build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '7.2.0' apply false
-    id 'com.android.library' version '7.2.0' apply false
+    id 'com.android.application' version '7.2.1' apply false
+    id 'com.android.library' version '7.2.1' apply false
     id 'org.jetbrains.kotlin.android' version '1.6.10' apply false
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,4 +1,4 @@
-#Thu May 19 14:25:12 KST 2022
+#Fri Aug 12 14:08:08 KST 2022
 distributionBase=GRADLE_USER_HOME
 distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
 distributionPath=wrapper/dists

settings.gradle

@@ -12,5 +12,5 @@ dependencyResolutionManagement {
         mavenCentral()
     }
 }
-rootProject.name = "Coroutine"
+rootProject.name = "My Application"
 include ':app'