Introduce 'MaterialShowCase' feature to provide user education on the file transfer functionality.

app/detekt_baseline.xml

@@ -11,6 +11,7 @@
     <ID>MagicNumber:ShareFiles.kt$ShareFiles$24</ID>
     <ID>MagicNumber:ZimManageViewModel.kt$ZimManageViewModel$5</ID>
     <ID>MagicNumber:ZimManageViewModel.kt$ZimManageViewModel$500</ID>
+    <ID>MagicNumber:LocalFileTransferFragment.kt$LocalFileTransferFragment$500</ID>
     <ID>NestedBlockDepth:LocalLibraryFragment.kt$LocalLibraryFragment$private fun checkPermissions()</ID>
     <ID>NestedBlockDepth:PeerGroupHandshake.kt$PeerGroupHandshake$private fun readHandshakeAndExchangeMetaData(): InetAddress?</ID>
     <ID>NestedBlockDepth:ReceiverHandShake.kt$ReceiverHandShake$override fun exchangeFileTransferMetadata(inputStream: InputStream, outputStream: OutputStream)</ID>

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

@@ -33,6 +33,8 @@ import android.net.wifi.p2p.WifiP2pDevice
 import android.net.wifi.p2p.WifiP2pDeviceList
 import android.os.Build
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
 import android.provider.Settings
 import android.util.Log
 import android.view.LayoutInflater
@@ -67,6 +69,8 @@ import org.kiwix.kiwixmobile.localFileTransfer.WifiDirectManager.Companion.getDe
 import org.kiwix.kiwixmobile.localFileTransfer.adapter.WifiP2pDelegate
 import org.kiwix.kiwixmobile.localFileTransfer.adapter.WifiPeerListAdapter
 import org.kiwix.kiwixmobile.core.webserver.ZimHostFragment.Companion.PERMISSION_REQUEST_CODE_COARSE_LOCATION
+import uk.co.deanwild.materialshowcaseview.MaterialShowcaseSequence
+import uk.co.deanwild.materialshowcaseview.ShowcaseConfig
 import javax.inject.Inject
 
 /**
@@ -84,6 +88,7 @@ import javax.inject.Inject
  */
 
 const val URIS_KEY = "uris"
+const val SHOWCASE_ID = "MaterialShowcaseId"
 
 @SuppressLint("GoogleAppIndexingApiWarning", "Registered")
 class LocalFileTransferFragment :
@@ -104,6 +109,8 @@ class LocalFileTransferFragment :
   private var fileListAdapter: FileListAdapter? = null
   private var wifiPeerListAdapter: WifiPeerListAdapter? = null
   private var fragmentLocalFileTransferBinding: FragmentLocalFileTransferBinding? = null
+  private var materialShowcaseSequence: MaterialShowcaseSequence? = null
+  private var searchView: View? = null
 
   override fun onCreateView(
     inflater: LayoutInflater,
@@ -139,6 +146,11 @@ class LocalFileTransferFragment :
       object : MenuProvider {
         override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
           menuInflater.inflate(R.menu.wifi_file_share_items, menu)
+          Handler(Looper.getMainLooper()).post {
+            searchView =
+              fragmentLocalFileTransferBinding?.root?.findViewById(R.id.menu_item_search_devices)
+            showCaseFeatureToUsers()
+          }
         }
 
         override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
@@ -154,8 +166,40 @@ class LocalFileTransferFragment :
     )
   }
 
-  private fun onSearchMenuClicked(): Boolean {
+  private fun showCaseFeatureToUsers() {
-    return when {
+    searchView?.let {
+      materialShowcaseSequence = MaterialShowcaseSequence(activity, SHOWCASE_ID).apply {
+        val config = ShowcaseConfig().apply {
+          delay = 500 // half second between each showcase view
+        }
+        setConfig(config)
+        addSequenceItem(
+          it,
+          getString(R.string.click_nearby_devices_message),
+          getString(R.string.got_it)
+        )
+        addSequenceItem(
+          fragmentLocalFileTransferBinding?.textViewDeviceName,
+          getString(R.string.your_device_name_message),
+          getString(R.string.got_it)
+        )
+        addSequenceItem(
+          fragmentLocalFileTransferBinding?.listPeerDevices,
+          getString(R.string.nearby_devices_list_message),
+          getString(R.string.got_it)
+        )
+        addSequenceItem(
+          fragmentLocalFileTransferBinding?.recyclerViewTransferFiles,
+          getString(R.string.transfer_zim_files_list_message),
+          getString(R.string.got_it)
+        )
+        start()
+      }
+    }
+  }
+
+  private fun onSearchMenuClicked(): Boolean =
+    when {
       !checkFineLocationAccessPermission() ->
         true
       !checkExternalStorageWritePermission() ->
@@ -175,7 +219,6 @@ class LocalFileTransferFragment :
         true
       }
     }
-  }
 
   private fun setupPeerDevicesList(activity: CoreMainActivity) {
     fragmentLocalFileTransferBinding?.listPeerDevices?.apply {
@@ -413,6 +456,8 @@ class LocalFileTransferFragment :
     wifiDirectManager.stopWifiDirectManager()
     wifiDirectManager.callbacks = null
     fragmentLocalFileTransferBinding = null
+    searchView = null
+    materialShowcaseSequence = null
     super.onDestroyView()
   }
 

buildSrc/src/main/kotlin/Libs.kt

@@ -339,4 +339,9 @@ object Libs {
    * https://developer.android.com/testing
    */
   const val junit: String = "androidx.test.ext:junit:" + Versions.junit
+
+  /**
+   * https://github.com/deano2390/MaterialShowcaseView
+   */
+  const val material_show_case_view: String = "com.github.deano2390:MaterialShowcaseView:" + Versions.material_show_case_view
 }

buildSrc/src/main/kotlin/Versions.kt

@@ -101,6 +101,8 @@ object Versions {
   const val webkit: String = "1.3.0"
 
   const val junit: String = "1.1.4"
+
+  const val material_show_case_view: String = "1.3.7"
 }
 
 /**

buildSrc/src/main/kotlin/plugin/AllProjectConfigurer.kt

@@ -207,6 +207,7 @@ class AllProjectConfigurer {
       implementation(Libs.rxandroid)
       implementation(Libs.rxjava)
       implementation(Libs.preference_ktx)
+      implementation(Libs.material_show_case_view)
     }
   }
 }

core/src/main/res/values/strings.xml

@@ -342,4 +342,8 @@
   <string name="go_to_settings_label">Go to Settings</string>
   <string name="request_notification_permission_message">To perform this action, please grant notification access</string>
   <string name="empty_string" />
+  <string name="click_nearby_devices_message">Click here to search for nearby devices.</string>
+  <string name="your_device_name_message">Your device name will appear here.</string>
+  <string name="nearby_devices_list_message">Here, you\'ll find a list of nearby devices. Tap on a device\'s name to initiate file transfer.</string>
+  <string name="transfer_zim_files_list_message">Here, you\'ll find the list of available ZIM files for transfer.</string>
 </resources>