[WIP] added qr code scanner

app/build.gradle

@@ -128,4 +128,11 @@ dependencies {
 
     // Image viewer
     implementation 'com.github.stfalcon-studio:StfalconImageViewer:v1.0.1'
+
+    // QR Scanner
+    implementation 'com.google.mlkit:barcode-scanning:17.0.0'
+    implementation "androidx.camera:camera-camera2:1.0.1"
+    implementation "androidx.camera:camera-lifecycle:1.0.1"
+    implementation "androidx.camera:camera-view:1.0.0-alpha28"
+
 }

app/src/main/AndroidManifest.xml

@@ -11,6 +11,11 @@
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28"/> <!-- Only required on SDK <= 28 -->
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/> <!-- To reschedule the websocket retry -->
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/> <!-- As of Android 13, we need to ask for permission to post notifications -->
+    <uses-permission android:name="android.permission.CAMERA" /> <!-- For QR Code scanning -->
+
+    <!-- Features -->
+    <uses-feature android:name="android.hardware.camera" />
+    <uses-feature android:name="android.hardware.camera.autofocus" />
 
     <!--
         Permission REQUEST_INSTALL_PACKAGES (F-Droid only!):
@@ -163,6 +168,9 @@
         <meta-data
                 android:name="com.google.firebase.messaging.default_notification_icon"
                 android:resource="@drawable/ic_notification"/>
+        <meta-data
+            android:name="com.google.android.gms.vision.DEPENDENCIES"
+            android:value="barcode" />
 
         <!-- FileProvider required for older Android versions (<= P), to allow passing the file URI in the open intent.
              Avoids "exposed beyond app through Intent.getData" exception, see see https://stackoverflow.com/a/57288352/1440785 -->

app/src/main/java/io/heckel/ntfy/ui/AddFragment.kt

@@ -1,16 +1,34 @@
 package io.heckel.ntfy.ui
 
+import android.Manifest
+import android.annotation.SuppressLint
 import android.app.Activity
 import android.app.AlertDialog
 import android.app.Dialog
 import android.content.Context
+import android.content.DialogInterface
+import android.content.pm.PackageManager
 import android.os.Bundle
+import android.os.VibrationEffect
+import android.os.Vibrator
+import android.os.VibratorManager
+import android.util.SparseArray
+import android.view.SurfaceHolder
+import android.view.SurfaceView
 import android.view.View
 import android.view.WindowManager
 import android.view.inputmethod.InputMethodManager
 import android.widget.*
+import androidx.camera.core.CameraSelector
+import androidx.camera.core.ImageAnalysis
+import androidx.camera.core.Preview
+import androidx.camera.lifecycle.ProcessCameraProvider
+import androidx.camera.view.PreviewView
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
 import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.lifecycleScope
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.textfield.TextInputEditText
 import com.google.android.material.textfield.TextInputLayout
 import io.heckel.ntfy.BuildConfig
@@ -21,6 +39,11 @@ import io.heckel.ntfy.msg.ApiService
 import io.heckel.ntfy.util.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import java.io.IOException
+import java.net.URL
+import java.util.concurrent.ExecutorService
+import java.util.concurrent.Executors
+
 
 class AddFragment : DialogFragment() {
     private val api = ApiService()
@@ -288,7 +311,7 @@ class AddFragment : DialogFragment() {
         }
     }
 
-    private fun validateInputSubscribeView() {
+    private fun validateInputSubscribeView(onCompletion: () -> Unit = {}) {
         if (!this::positiveButton.isInitialized) return // As per crash seen in Google Play
 
         // Show/hide things: This logic is intentionally kept simple. Do not simplify "just because it's pretty".
@@ -333,6 +356,8 @@ class AddFragment : DialogFragment() {
                     } else {
                         positiveButton.isEnabled = validTopic(topic)
                     }
+
+                    onCompletion()
                 }
             }
         }