Lock screen rotation when scanner is shown

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 4.1.0
+
+- Lock screen rotation when scanner is shown
+
 ## 4.0.1
 
 - Fix When ViewController whose view is not in the window hierarchy, present Scan ViewController failed will failed.

android/src/main/kotlin/de/mintware/barcode_scan/BarcodeScannerActivity.kt

@@ -1,10 +1,14 @@
 package de.mintware.barcode_scan
 
 import android.app.Activity
+import android.content.Context
 import android.content.Intent
+import android.content.pm.ActivityInfo
 import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
+import android.view.Surface
+import android.view.WindowManager
 import com.google.zxing.BarcodeFormat
 import com.google.zxing.Result
 import me.dm7.barcodescanner.zxing.ZXingScannerView
@@ -45,6 +49,18 @@ class BarcodeScannerActivity : Activity(), ZXingScannerView.ResultHandler {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
+        //lock orientation
+        val rotation = (getSystemService(
+                Context.WINDOW_SERVICE) as WindowManager).defaultDisplay.rotation
+        var orientation = when (rotation) {
+            Surface.ROTATION_0 -> ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+            Surface.ROTATION_90 -> ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
+            Surface.ROTATION_180 -> ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT
+            else -> ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE
+        }
+
+        requestedOrientation = orientation
+
         config = Protos.Configuration.parseFrom(intent.extras!!.getByteArray(EXTRA_CONFIG))
     }
 
@@ -120,6 +136,8 @@ class BarcodeScannerActivity : Activity(), ZXingScannerView.ResultHandler {
     override fun handleResult(result: Result?) {
         val intent = Intent()
 
+        requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
+
         val builder = Protos.ScanResult.newBuilder()
         if (result == null) {
 

example/android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.0'
+        classpath 'com.android.tools.build:gradle:4.1.3'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

ios/Classes/BarcodeScannerViewController.swift

@@ -53,6 +53,8 @@ class BarcodeScannerViewController: UIViewController {
 
   override func viewDidLoad() {
     super.viewDidLoad()
+
+    UIDevice.current.endGeneratingDeviceOrientationNotifications()
 
     #if targetEnvironment(simulator)
     view.backgroundColor = .lightGray
@@ -88,6 +90,8 @@ class BarcodeScannerViewController: UIViewController {
       scanner!.stopScanning()
     }
 
+    UIDevice.current.endGeneratingDeviceOrientationNotifications()
+
     scanRect?.startAnimating()
     MTBBarcodeScanner.requestCameraPermission(success: { success in
       if success {
@@ -104,6 +108,8 @@ class BarcodeScannerViewController: UIViewController {
     scanner?.stopScanning()
     scanRect?.stopAnimating()
 
+    UIDevice.current.beginGeneratingDeviceOrientationNotifications()
+
     if isFlashOn {
       setFlashState(false)
     }