Init project

Author: javaherisaber

Diff for: .gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

Diff for: app/.gitignore

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+/build

Diff for: app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
+
+android {
+    namespace 'nl.storegear.android.mlbarcodescanner'
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "nl.storegear.android.mlbarcodescanner"
+        minSdk 21
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildFeatures {
+        viewBinding true
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+dependencies {
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.appcompat:appcompat:1.5.1'
+    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'
+}

Diff for: app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

Diff for: app/src/androidTest/java/nl/storegear/android/mlbarcodescanner/ExampleInstrumentedTest.kt

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+package nl.storegear.android.mlbarcodescanner
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("nl.storegear.android.mlbarcodescanner", appContext.packageName)
+    }
+}

Diff for: app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MLBarcodeScanner"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.app.lib_name"
+                android:value="" />
+        </activity>
+    </application>
+
+</manifest>

Diff for: app/src/main/java/nl/storegear/android/mlbarcodescanner/MainActivity.kt

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+package nl.storegear.android.mlbarcodescanner
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+
+class MainActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+    }
+}

Diff for: app/src/main/java/nl/storegear/android/mlbarcodescanner/mlkit/BarcodeScannerProcessor.kt

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+package nl.storegear.android.mlbarcodescanner.mlkit
+
+import android.graphics.Rect
+import com.google.android.gms.tasks.Task
+import com.google.mlkit.vision.barcode.BarcodeScanner
+import com.google.mlkit.vision.barcode.BarcodeScanning
+import com.google.mlkit.vision.barcode.common.Barcode
+import com.google.mlkit.vision.common.InputImage
+import nl.storegear.android.mlbarcodescanner.util.BarcodeGraphic
+import nl.storegear.android.mlbarcodescanner.util.MetricUtils.dpToPx
+
+/** Barcode Detector Demo.  */
+class BarcodeScannerProcessor(private val callback: CameraXBarcodeCallback, private val offset: Int) : VisionProcessorBase<List<Barcode>>() {
+
+    // Note that if you know which format of barcode your app is dealing with, detection will be
+    // faster to specify the supported barcode formats one by one, e.g.
+    // BarcodeScannerOptions.Builder()
+    //     .setBarcodeFormats(Barcode.FORMAT_QR_CODE)
+    //     .build();
+    private val barcodeScanner: BarcodeScanner = BarcodeScanning.getClient()
+
+    override fun stop() {
+        super.stop()
+        barcodeScanner.close()
+    }
+
+    override fun detectInImage(image: InputImage): Task<List<Barcode>> {
+        return barcodeScanner.process(image)
+    }
+
+    override fun onSuccess(results: List<Barcode>, graphicOverlay: GraphicOverlay) {
+        for (barcode in results) {
+            val height = graphicOverlay.measuredHeight
+            val width = graphicOverlay.measuredWidth
+            val area = dpToPx(264)
+            val left = (width / 2) - (area / 2)
+            val right = (width / 2) + (area / 2)
+            val top = (height / 2) - (area / 2)
+            val bottom = (height / 2) + (area / 2)
+            val focusArea = Rect(left, top, right, bottom)
+            val box = barcode.boundingBox ?: return
+            val barcodeRect = Rect(dpToPx(box.left), dpToPx(box.top), dpToPx(box.right), dpToPx(box.bottom))
+            val displayValue = barcode.displayValue
+            val rawValue = barcode.rawValue
+            if (barcodeIsInFocusArea(focusArea, barcodeRect) && displayValue != null && rawValue != null) {
+                callback.onNewBarcodeScanned(displayValue, rawValue)
+            }
+
+            // todo: if you don't want to draw the banner remove this line and [BarcodeGraphic] class
+            graphicOverlay.add(BarcodeGraphic(graphicOverlay, barcode))
+        }
+    }
+
+    private fun barcodeIsInFocusArea(focus: Rect, target: Rect): Boolean {
+        return (focus.left < target.left - target.width() + offset) && (target.right < focus.right + offset)
+                && (focus.top < target.top + offset) && (focus.bottom > target.bottom + target.height() - offset)
+    }
+
+    override fun onFailure(e: Exception) {
+        // do nothing
+    }
+}
+
+fun interface CameraXBarcodeCallback {
+    fun onNewBarcodeScanned(displayValue: String, rawValue: String)
+}