Should fix black avatar for chat rooms & conferences if there is a picture set for a contact but that file can't be read for some reason

app/src/main/java/org/linphone/utils/DataBindingUtils.kt

@@ -416,8 +416,13 @@ private fun loadContactPictureWithCoil(
                 AppUtils.getDimension(R.dimen.avatar_list_cell_size).toInt()
             }
             val bitmap = ImageUtils.getBitmapFromMultipleAvatars(imageView.context, w, images)
-            imageView.load(bitmap) {
-                transformations(CircleCropTransformation())
+            if (bitmap != null) {
+                imageView.load(bitmap) {
+                    transformations(CircleCropTransformation())
+                }
+            } else {
+                val initials = model.initials.value.orEmpty()
+                imageView.load(ImageUtils.getGeneratedAvatar(context, size, textSize, initials))
             }
         }
     }

app/src/main/java/org/linphone/utils/ImageUtils.kt

@@ -115,6 +115,10 @@ class ImageUtils {
                     "$TAG Found at [${list.size}] participant(s) with a picture for conversation [$id]($hash), creating avatar"
                 )
                 val bitmap = generateBitmapFromList(list)
+                if (bitmap == null) {
+                    Log.e("$TAG Avatar couldn't be generated")
+                    return ""
+                }
                 val outputStream: OutputStream = FileOutputStream(file)
                 bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)
                 outputStream.close()
@@ -130,13 +134,13 @@ class ImageUtils {
         }
 
         @WorkerThread
-        fun generateBitmapFromList(list: ArrayList<String>): Bitmap {
+        fun generateBitmapFromList(list: ArrayList<String>): Bitmap? {
             val size = AppUtils.getDimension(R.dimen.avatar_in_call_size).toInt()
             return getBitmapFromMultipleAvatars(coreContext.context, size, list)
         }
 
         @AnyThread
-        fun getBitmapFromMultipleAvatars(context: Context, size: Int, images: List<String>): Bitmap {
+        fun getBitmapFromMultipleAvatars(context: Context, size: Int, images: List<String>): Bitmap? {
             val drawables = images.mapNotNull {
                 try {
                     val uri = Uri.parse(it)
@@ -148,10 +152,18 @@ class ImageUtils {
                         null
                     }
                 } catch (e: Exception) {
+                    Log.e("$TAG Failed to get scaled bitmap for URI [$it]")
                     null
                 }
             }
 
+            if (drawables.isEmpty()) {
+                Log.e("$TAG Drawables list is empty, can't generate bitmap without at least one")
+                return null
+            } else {
+                Log.i("$TAG Generating avatar using [${drawables.size}] drawables")
+            }
+
             val rectangles = if (drawables.size == 2) {
                 arrayListOf(
                     Rect(0, 0, size / 2, size),
@@ -187,7 +199,7 @@ class ImageUtils {
                     val quarter = size / 4
                     Rect(quarter, 0, 3 * quarter, size)
                 } else {
-                    null
+                    Rect(0, 0, size, size)
                 }
 
                 try {

app/src/main/java/org/linphone/utils/LinphoneUtils.kt

@@ -415,9 +415,13 @@ class LinphoneUtils {
             fakeFriend.address = conferenceInfo.uri
             fakeFriend.name = conferenceInfo.subject
 
+            var avatarFound = true
             val hash = conferenceInfo.uri?.asStringUriOnly().hashCode().toString()
             val file = FileUtils.getFileStorageCacheDir("$hash.jpg", overrideExisting = true)
             if (!file.exists()) {
+                avatarFound = false
+                Log.w("$TAG File [${file.absolutePath}] doesn't exist yet, trying to generate it")
+
                 val list = arrayListOf<String>()
                 for (participant in conferenceInfo.participantInfos) {
                     val friend = coreContext.contactsManager.findContactByAddress(
@@ -432,13 +436,25 @@ class LinphoneUtils {
                 }
                 if (list.isNotEmpty()) {
                     val bitmap = ImageUtils.generateBitmapFromList(list)
-                    val outputStream: OutputStream = FileOutputStream(file)
-                    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)
-                    outputStream.close()
+                    if (bitmap != null) {
+                        val outputStream: OutputStream = FileOutputStream(file)
+                        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)
+                        outputStream.close()
+                        avatarFound = true
+                        Log.i("$TAG Generated avatar and stored it in [${file.absolutePath}]")
+                    } else {
+                        Log.w("$TAG Can't generate avatar from that participants list")
+                    }
+                } else {
+                    Log.w(
+                        "$TAG Can't generate avatar as no participant was found with an available picture"
+                    )
                 }
             }
-            fakeFriend.photo = FileUtils.getProperFilePath(file.absolutePath)
 
+            if (avatarFound) {
+                fakeFriend.photo = FileUtils.getProperFilePath(file.absolutePath)
+            }
             val avatarModel = ContactAvatarModel(fakeFriend)
             avatarModel.defaultToConferenceIcon.postValue(true)
             avatarModel.skipInitials.postValue(true)