Initial commit

.gitignore

@@ -0,0 +1,15 @@
+*.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

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

@@ -0,0 +1,46 @@
+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "code.aman.qrcodescanner"
+        minSdk 21
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    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:1.4.2'
+    implementation 'com.google.android.material:material:1.6.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'com.google.android.gms:play-services-vision:20.1.3'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation 'com.google.android.gms:play-services-vision-common:19.1.3'
+    implementation'com.google.camerax.effects:portrait:0.0.1'
+}

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# 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

app/src/androidTest/java/code/aman/qrcodescanner/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package code.aman.qrcodescanner
+
+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("code.aman.qrcodescanner", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?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="code.aman.qrcodescanner">
+
+
+    <uses-permission android:name="android.permission.CAMERA"/>
+
+    <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.QRCodeScanner"
+        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>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/code/aman/qrcodescanner/MainActivity.kt

@@ -0,0 +1,113 @@
+package code.aman.qrcodescanner
+
+import android.Manifest
+import android.app.Activity
+import android.content.Context
+import android.content.pm.PackageManager
+import android.nfc.tech.NfcBarcode
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.os.WorkSource
+import android.util.SparseArray
+import android.view.SurfaceHolder
+import android.view.SurfaceView
+import android.widget.TextView
+import android.widget.Toast
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
+import androidx.core.util.isNotEmpty
+import com.google.android.gms.vision.Detector
+import com.google.android.gms.vision.barcode.Barcode
+import com.google.android.gms.vision.barcode.BarcodeDetector
+import java.util.concurrent.Flow
+import com.google.android.gms.vision.CameraSource as CameraSource1
+
+class MainActivity : AppCompatActivity() {
+    private val requestCodeCameraPermission = 1001
+    private lateinit var cameraSource: CameraSource1
+    private lateinit var detector: BarcodeDetector
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        if (ContextCompat.checkSelfPermission(this@MainActivity,Manifest.permission.CAMERA) !=PackageManager.PERMISSION_GRANTED
+            ){
+            askForCameraPermission()
+        }else
+        {
+            setupControls()
+        }
+    }
+
+    private fun setupControls() {
+           detector = BarcodeDetector . Builder (this@MainActivity).build()
+        cameraSource = CameraSource1.Builder(this@MainActivity, detector)
+            .setAutoFocusEnabled(true)
+            .build()
+       var cameraSurfaceView = findViewById<SurfaceView>(R.id.cameraSurfaceView)
+        cameraSurfaceView.holder.addCallback(surfaceCallBack)
+        detector.setProcessor(processor)
+
+    }
+
+    private fun askForCameraPermission() {
+    ActivityCompat.requestPermissions(this@MainActivity, arrayOf(Manifest.permission.CAMERA),
+        requestCodeCameraPermission)
+    }
+
+    override fun onRequestPermissionsResult(
+        requestCode: Int,
+        permissions: Array<out String>,
+        grantResults: IntArray
+    ) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        if (requestCode == requestCodeCameraPermission && grantResults.isNotEmpty())
+        {
+            if (grantResults[0] == PackageManager.PERMISSION_GRANTED){
+                setupControls()
+            }else {
+                Toast.makeText(applicationContext,"Permission Denied", Toast.LENGTH_SHORT).show()
+
+            }
+        }
+    }
+    private val surfaceCallBack = object : SurfaceHolder.Callback{
+        override fun surfaceCreated(surfaceHolder: SurfaceHolder) {
+
+        try {
+            cameraSource.start(surfaceHolder)
+
+        }catch (exception: Exception){
+            Toast.makeText(applicationContext, "Somethings went wrong", Toast.LENGTH_SHORT).show()
+        }
+
+        }
+
+
+        override fun surfaceChanged(p0: SurfaceHolder, p1: Int, p2: Int, p3: Int) {
+
+        }
+
+        override fun surfaceDestroyed(p0: SurfaceHolder) {
+          cameraSource.stop()
+        }
+    }
+    private val processor = object : Detector.Processor<Barcode>{
+        override fun release() {
+
+        }
+
+        override fun receiveDetections(detections: Detector.Detections<Barcode>) {
+            if (detections != null && detections.detectedItems.isNotEmpty())
+            {
+                 val qrCodes : SparseArray<Barcode> = detections.detectedItems
+                val code = qrCodes.valueAt(0)
+               var textScanResult = findViewById<TextView>(R.id.textScanResult)
+                textScanResult.text = code.displayValue
+            }else {
+                var textScanResult = findViewById<TextView>(R.id.textScanResult)
+                textScanResult.text = ""
+            }
+        }
+    }
+}

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>