From 4d720b1d81c809a04604867f3ef74b6a1d92c0c8 Mon Sep 17 00:00:00 2001
From: Koen J <git@unkto.com>
Date: Tue, 24 Jun 2025 11:43:40 +0200
Subject: [PATCH] Fixed app freezing when exporting Polycentric Identity #2405

---
 .../activities/PolycentricBackupActivity.kt   | 55 ++++++++++++++-----
 .../layout/activity_polycentric_backup.xml    | 11 ++++
 2 files changed, 53 insertions(+), 13 deletions(-)

diff --git a/app/src/main/java/com/futo/platformplayer/activities/PolycentricBackupActivity.kt b/app/src/main/java/com/futo/platformplayer/activities/PolycentricBackupActivity.kt
index a0a0fac1..9cf58134 100644
--- a/app/src/main/java/com/futo/platformplayer/activities/PolycentricBackupActivity.kt
+++ b/app/src/main/java/com/futo/platformplayer/activities/PolycentricBackupActivity.kt
@@ -14,10 +14,12 @@ import android.widget.ImageButton
 import android.widget.ImageView
 import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
+import androidx.lifecycle.lifecycleScope
 import com.futo.platformplayer.R
 import com.futo.platformplayer.logging.Logger
 import com.futo.platformplayer.setNavigationBarColorAndIcons
 import com.futo.platformplayer.states.StateApp
+import com.futo.platformplayer.states.StateApp.Companion.withContext
 import com.futo.platformplayer.states.StatePolycentric
 import com.futo.platformplayer.views.buttons.BigButton
 import com.futo.polycentric.core.ContentType
@@ -29,6 +31,9 @@ import com.futo.polycentric.core.toBase64Url
 import com.google.zxing.BarcodeFormat
 import com.google.zxing.MultiFormatWriter
 import com.google.zxing.common.BitMatrix
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import userpackage.Protocol
 import userpackage.Protocol.ExportBundle
 import userpackage.Protocol.URLInfo
@@ -39,6 +44,7 @@ class PolycentricBackupActivity : AppCompatActivity() {
     private lateinit var _imageQR: ImageView;
     private lateinit var _exportBundle: String;
     private lateinit var _textQR: TextView;
+    private lateinit var _loader: View
 
     override fun attachBaseContext(newBase: Context?) {
         super.attachBaseContext(StateApp.instance.getLocaleContext(newBase))
@@ -49,24 +55,47 @@ class PolycentricBackupActivity : AppCompatActivity() {
         setContentView(R.layout.activity_polycentric_backup);
         setNavigationBarColorAndIcons();
 
-        _buttonShare = findViewById(R.id.button_share);
-        _buttonCopy = findViewById(R.id.button_copy);
-        _imageQR = findViewById(R.id.image_qr);
-        _textQR = findViewById(R.id.text_qr);
+        _buttonShare = findViewById(R.id.button_share)
+        _buttonCopy = findViewById(R.id.button_copy)
+        _imageQR = findViewById(R.id.image_qr)
+        _textQR = findViewById(R.id.text_qr)
+        _loader = findViewById(R.id.progress_loader)
         findViewById<ImageButton>(R.id.button_back).setOnClickListener {
             finish();
         };
 
-        _exportBundle = createExportBundle();
+        _imageQR.visibility = View.INVISIBLE
+        _textQR.visibility = View.INVISIBLE
+        _loader.visibility = View.VISIBLE
+        _buttonShare.visibility = View.INVISIBLE
+        _buttonCopy.visibility = View.INVISIBLE
 
-        try {
-            val dimension = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 200f, resources.displayMetrics).toInt();
-            val qrCodeBitmap = generateQRCode(_exportBundle, dimension, dimension);
-            _imageQR.setImageBitmap(qrCodeBitmap);
-        } catch (e: Exception) {
-            Logger.e(TAG, getString(R.string.failed_to_generate_qr_code), e);
-            _imageQR.visibility = View.INVISIBLE;
-            _textQR.visibility = View.INVISIBLE;
+        lifecycleScope.launch {
+            try {
+                val pair = withContext(Dispatchers.IO) {
+                    val bundle = createExportBundle()
+                    val dimension = TypedValue.applyDimension(
+                        TypedValue.COMPLEX_UNIT_DIP, 200f, resources.displayMetrics
+                    ).toInt()
+                    val qr = generateQRCode(bundle, dimension, dimension)
+                    Pair(bundle, qr)
+                }
+
+                _exportBundle = pair.first
+                _imageQR.setImageBitmap(pair.second)
+                _imageQR.visibility = View.VISIBLE
+                _textQR.visibility = View.VISIBLE
+                _buttonShare.visibility = View.VISIBLE
+                _buttonCopy.visibility = View.VISIBLE
+            } catch (e: Exception) {
+                Logger.e(TAG, getString(R.string.failed_to_generate_qr_code), e)
+                _imageQR.visibility = View.INVISIBLE
+                _textQR.visibility = View.INVISIBLE
+                _buttonShare.visibility = View.INVISIBLE
+                _buttonCopy.visibility = View.INVISIBLE
+            } finally {
+                _loader.visibility = View.GONE
+            }
         }
 
         _buttonShare.onClick.subscribe {
diff --git a/app/src/main/res/layout/activity_polycentric_backup.xml b/app/src/main/res/layout/activity_polycentric_backup.xml
index e31e8584..d6579dd7 100644
--- a/app/src/main/res/layout/activity_polycentric_backup.xml
+++ b/app/src/main/res/layout/activity_polycentric_backup.xml
@@ -76,4 +76,15 @@
             app:buttonIcon="@drawable/ic_copy"
             android:layout_marginTop="8dp" />
     </LinearLayout>
+
+    <ProgressBar
+        android:id="@+id/progress_loader"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:indeterminate="true"
+        android:visibility="gone"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
 </androidx.constraintlayout.widget.ConstraintLayout>
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