[HWG] Check and alert about proper certificate and resource.

Author: yannchevalier

samples/hwgeneration/src/main/java/com/myscript/iink/samples/hwgeneration/MainActivity.kt

@@ -9,6 +9,7 @@ import android.net.Uri
 import android.os.Build
 import android.os.Build.VERSION_CODES
 import android.os.Bundle
+import android.text.Html
 import android.util.Log
 import android.view.ActionMode
 import android.view.LayoutInflater
@@ -109,7 +110,6 @@ class MainActivity : AppCompatActivity() {
                     .setMessage( getString(R.string.app_error_invalid_certificate_message))
                     .setPositiveButton(android.R.string.ok, null)
                     .show()
-            finishAndRemoveTask() // be sure to end the application
             return
         }
 
@@ -160,6 +160,18 @@ class MainActivity : AppCompatActivity() {
             }
         }
 
+        try {
+            // Dummy check to verify handwriting generation resource and proper certificate.
+            val generationViewModel = this.generationViewModel
+        } catch (e: IllegalStateException) {
+            AlertDialog.Builder(this)
+                .setTitle(getString(R.string.app_error_missing_resource_title))
+                .setMessage(Html.fromHtml(getString(R.string.app_error_missing_resource_message)))
+                .setPositiveButton(android.R.string.ok, null)
+                .show()
+            return
+        }
+
         generationViewModel.hwrResults.observe(this) { hwrResults ->
             if (hwrResults.isNotEmpty()) {
                 editorViewModel.write(hwrResults.last().events)
@@ -209,7 +221,7 @@ class MainActivity : AppCompatActivity() {
         val canUndo = editorViewModel.partHistoryState.value?.canUndo ?: false
         val canRedo = editorViewModel.partHistoryState.value?.canRedo ?: false
         val isWriting = editorViewModel.isWriting.value ?: false
-        val isProfileBuilding = generationViewModel.isProfileBuilding.value ?: false
+        val isProfileBuilding = try { generationViewModel.isProfileBuilding.value } catch (e: Exception) { false } ?: false
         val isEditorEmpty = editorViewModel.isEmpty()
 
         menu?.findItem(R.id.editor_menu_undo)?.isEnabled = !isProfileBuilding && !isWriting && canUndo

samples/hwgeneration/src/main/res/values/strings.xml

@@ -4,6 +4,9 @@
     <string name="app_error_invalid_certificate_title">Invalid certificate</string>
     <string name="app_error_invalid_certificate_message">Please check certificate data provided at Engine creation.</string>
 
+    <string name="app_error_missing_resource_title">Missing Handwriting Generation Rights</string>
+    <string name="app_error_missing_resource_message">Please check that you have a dedicated certificate and that you have included the handwriting generation resource.</string>
+
     <string name="menu_go">Go</string>
     <string name="menu_undo">Undo</string>
     <string name="menu_redo">Redo</string>