Initial commit

.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled.
+
+version:
+  revision: e3c29ec00c9c825c891d75054c63fcc46454dca1
+  channel: stable
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: e3c29ec00c9c825c891d75054c63fcc46454dca1
+      base_revision: e3c29ec00c9c825c891d75054c63fcc46454dca1
+    - platform: android
+      create_revision: e3c29ec00c9c825c891d75054c63fcc46454dca1
+      base_revision: e3c29ec00c9c825c891d75054c63fcc46454dca1
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

README.md

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+# demo_phone_call
+
+A new Flutter project.
+
+## Getting Started
+
+This project is a starting point for a Flutter application.
+
+A few resources to get you started if this is your first Flutter project:
+
+- [Lab: Write your first Flutter app](https://docs.flutter.dev/get-started/codelab)
+- [Cookbook: Useful Flutter samples](https://docs.flutter.dev/cookbook)
+
+For help getting started with Flutter development, view the
+[online documentation](https://docs.flutter.dev/), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.

analysis_options.yaml

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+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at
+  # https://dart-lang.github.io/linter/lints/index.html.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

android/.gitignore

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+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

android/app/build.gradle

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+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion flutter.compileSdkVersion
+    ndkVersion flutter.ndkVersion
+
+    viewBinding {
+        enabled = true
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "com.ldhdev.demo_phone_call"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
+        minSdkVersion flutter.minSdkVersion
+        targetSdkVersion flutter.targetSdkVersion
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}

android/app/src/debug/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.ldhdev.demo_phone_call">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.ldhdev.demo_phone_call">
+
+    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.READ_CALL_LOG" />
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
+
+    <application
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher"
+        android:label="demo_phone_call">
+        <activity
+            android:name=".MainActivity"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:exported="true"
+            android:hardwareAccelerated="true"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+                android:name="io.flutter.embedding.android.NormalTheme"
+                android:resource="@style/NormalTheme" />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+
+        <receiver
+            android:name=".IncomingCallReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.PHONE_STATE" />
+            </intent-filter>
+        </receiver>
+    </application>
+</manifest>

android/app/src/main/kotlin/com/ldhdev/demo_phone_call/IncomingCallReceiver.kt

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+package com.ldhdev.demo_phone_call
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.graphics.Color
+import android.graphics.PixelFormat
+import android.os.Build
+import android.telephony.TelephonyManager
+import android.view.Gravity
+import android.view.View
+import android.view.WindowManager
+import io.flutter.FlutterInjector
+import io.flutter.embedding.android.FlutterTextureView
+import io.flutter.embedding.android.FlutterView
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.embedding.engine.dart.DartExecutor
+
+class IncomingCallReceiver : BroadcastReceiver() {
+
+    companion object {
+        private var view: View? = null
+    }
+
+    override fun onReceive(context: Context, intent: Intent) {
+        val phoneNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER) ?: return
+
+        // 테스트 용으로 OFFHOOK 상태에서만 동작하도록 함
+        when (intent.getStringExtra(TelephonyManager.EXTRA_STATE)) {
+            TelephonyManager.EXTRA_STATE_OFFHOOK -> context.createOverlay(phoneNumber)
+            TelephonyManager.EXTRA_STATE_IDLE -> context.removeOverlay()
+        }
+    }
+
+    private fun Context.removeOverlay() {
+        view?.let {
+            val windowManager = getSystemService(Context.WINDOW_SERVICE) as WindowManager
+            windowManager.removeView(it)
+            view = null
+        }
+    }
+
+    private fun Context.executeEntrypoint(engine: FlutterEngine, phoneNumber: String) {
+        val flutterLoader = FlutterInjector.instance().flutterLoader()
+        if (!flutterLoader.initialized()) {
+            flutterLoader.startInitialization(applicationContext)
+        }
+
+        flutterLoader.ensureInitializationComplete(applicationContext, null)
+
+        val entrypoint = DartExecutor.DartEntrypoint(
+            flutterLoader.findAppBundlePath(),
+            "overlayMain"
+        )
+
+        engine.dartExecutor.executeDartEntrypoint(entrypoint, listOf(phoneNumber))
+    }
+
+
+    private fun Context.createOverlay(phoneNumber: String) {
+
+        val engine = FlutterEngine(this)
+        executeEntrypoint(engine, phoneNumber)
+
+        engine.lifecycleChannel.appIsResumed()
+
+        val params = WindowManager.LayoutParams(
+            WindowManager.LayoutParams.MATCH_PARENT,
+            400,
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY else WindowManager.LayoutParams.TYPE_PHONE,
+            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
+            PixelFormat.TRANSLUCENT
+        ).apply {
+            gravity = Gravity.TOP
+            y = 500
+        }
+
+
+        val windowManager = getSystemService(Context.WINDOW_SERVICE) as WindowManager
+
+        view = FlutterView(applicationContext, FlutterTextureView(applicationContext)).apply {
+            attachToFlutterEngine(engine)
+            fitsSystemWindows = true
+            isFocusable = true
+            isFocusableInTouchMode = true
+            setBackgroundColor(Color.TRANSPARENT)
+        }
+
+        windowManager.addView(view, params)
+    }
+}

android/app/src/main/kotlin/com/ldhdev/demo_phone_call/MainActivity.kt

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+package com.ldhdev.demo_phone_call
+
+import android.Manifest
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.provider.Settings
+import androidx.core.app.ActivityCompat
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity : FlutterActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        ActivityCompat.requestPermissions(
+            this, arrayOf(
+                Manifest.permission.READ_PHONE_STATE,
+                Manifest.permission.READ_CALL_LOG,
+                Manifest.permission.SYSTEM_ALERT_WINDOW
+            ), 0
+        )
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            if (!Settings.canDrawOverlays(this)) {
+                val intent = Intent(
+                    Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
+                    Uri.parse("package:$packageName")
+                )
+                startActivityForResult(intent, 0)
+            }
+        }
+    }
+}