Fixed: testOpeningFileWithFilePicker test intermittently fails on API level 34.

* Fixed: Memory leaks in `OnlineLibraryFragment` that appeared after upgrading LeakCanary.
* Fixed: Memory leaks in `LocalFileTransferFragment` that appeared after upgrading LeakCanary.
* Fixed: A memory leak in `ZimManageViewModel` caused by `addNetworkInterceptor` holding a reference to progressListener.

app/src/androidTest/java/org/kiwix/kiwixmobile/localLibrary/OpeningFilesFromStorageTest.kt

@@ -117,7 +117,7 @@ class OpeningFilesFromStorageTest : BaseActivityTest() {
         sharedPreferenceUtil.shouldShowStorageSelectionDialog = true
         // open file picker to select a file to test the real scenario.
         composeTestRule.onNodeWithTag(SELECT_FILE_BUTTON_TESTING_TAG).performClick()
-        uiDevice.findObject(By.textContains(fileName)).click()
+        TestUtils.testFlakyView(uiDevice.findObject(By.textContains(fileName))::click, 10)
 
         copyMoveFileHandler {
           assertCopyMoveDialogDisplayed()

app/src/main/java/org/kiwix/kiwixmobile/localFileTransfer/LocalFileTransferFragment.kt

@@ -533,6 +533,7 @@ class LocalFileTransferFragment :
   override fun onDestroyView() {
     wifiDirectManager.stopWifiDirectManager()
     wifiDirectManager.callbacks = null
+    fragmentLocalFileTransferBinding?.root?.removeAllViews()
     fragmentLocalFileTransferBinding = null
     searchIconView = null
     materialShowCaseSequence = null

app/src/main/java/org/kiwix/kiwixmobile/nav/destination/library/OnlineLibraryFragment.kt

@@ -227,14 +227,14 @@ class OnlineLibraryFragment : BaseFragment(), FragmentActivityExtensions {
     setupMenu()
 
     // hides keyboard when scrolled
-    fragmentDestinationDownloadBinding?.libraryList?.addOnScrollListener(
+    fragmentDestinationDownloadBinding?.libraryList?.addOnScrollListener(simpleScrollListener)
-      SimpleRecyclerViewScrollListener { _, newState ->
+  }
+
+  private var simpleScrollListener = SimpleRecyclerViewScrollListener { _, newState ->
     if (newState == RecyclerView.SCROLL_STATE_DRAGGING) {
       fragmentDestinationDownloadBinding?.libraryList?.closeKeyboard()
     }
   }
-    )
-  }
 
   private fun setupMenu() {
     (requireActivity() as MenuHost).addMenuProvider(
@@ -373,7 +373,12 @@ class OnlineLibraryFragment : BaseFragment(), FragmentActivityExtensions {
 
   override fun onDestroyView() {
     super.onDestroyView()
-    fragmentDestinationDownloadBinding?.libraryList?.adapter = null
+    fragmentDestinationDownloadBinding?.apply {
+      librarySwipeRefresh.setOnRefreshListener(null)
+      libraryList.removeOnScrollListener(simpleScrollListener)
+      libraryList.adapter = null
+      root.removeAllViews()
+    }
     fragmentDestinationDownloadBinding = null
   }
 

app/src/main/java/org/kiwix/kiwixmobile/zimManager/ZimManageViewModel.kt

@@ -181,7 +181,7 @@ class ZimManageViewModel @Inject constructor(
               .body(
                 ProgressResponseBody(
                   responseBody,
-                  AppProgressListenerProvider(this),
+                  appProgressListener,
                   contentLength
                 )
               )
@@ -195,6 +195,8 @@ class ZimManageViewModel @Inject constructor(
       }
   }
 
+  private var appProgressListener: AppProgressListenerProvider? = AppProgressListenerProvider(this)
+
   private fun getContentLengthOfLibraryXmlFile(): Long {
     val headRequest =
       Request.Builder()
@@ -218,7 +220,7 @@ class ZimManageViewModel @Inject constructor(
             ?: DEFAULT_INT_VALUE.toLong()
         }
       }
-    } catch (ignore: Exception) {
+    } catch (_: Exception) {
       // do nothing
     }
     return DEFAULT_INT_VALUE.toLong()
@@ -237,6 +239,7 @@ class ZimManageViewModel @Inject constructor(
     fileSelectActions.onComplete()
     requestDownloadLibrary.onComplete()
     compositeDisposable = null
+    appProgressListener = null
     super.onCleared()
   }
 

core/src/main/java/org/kiwix/kiwixmobile/core/data/remote/ProgressResponseBody.kt

@@ -30,7 +30,7 @@ import org.kiwix.kiwixmobile.core.downloader.downloadManager.ZERO
 
 class ProgressResponseBody(
   private val responseBody: ResponseBody,
-  private val progressListener: OnlineLibraryProgressListener,
+  private val progressListener: OnlineLibraryProgressListener?,
   private val contentLength: Long
 ) : ResponseBody() {
   private lateinit var bufferedSource: BufferedSource
@@ -51,7 +51,7 @@ class ProgressResponseBody(
       override fun read(sink: Buffer, byteCount: Long): Long {
         val bytesRead = super.read(sink, byteCount)
         totalBytesRead += if (bytesRead != DEFAULT_INT_VALUE.toLong()) bytesRead else ZERO.toLong()
-        progressListener.onProgress(totalBytesRead, contentLength)
+        progressListener?.onProgress(totalBytesRead, contentLength)
         return bytesRead
       }
     }

core/src/main/java/org/kiwix/kiwixmobile/core/page/PageFragment.kt

@@ -189,7 +189,10 @@ abstract class PageFragment : OnItemClickListener, BaseFragment(), FragmentActiv
   override fun onDestroyView() {
     super.onDestroyView()
     compositeDisposable.clear()
-    fragmentPageBinding?.recyclerView?.adapter = null
+    fragmentPageBinding?.apply {
+      recyclerView.adapter = null
+      root.removeAllViews()
+    }
     fragmentPageBinding = null
   }