fix: unique FileProvider name to prevent conflict

.changeset/fileprovider-conflict.md

@@ -0,0 +1,5 @@
+---
+"@react-native-documents/viewer": patch
+---
+
+fix: use unique FileProvider name to prevent conflict with other FileProvider

packages/document-viewer/android/src/main/AndroidManifest.xml

@@ -4,8 +4,8 @@
   <application>
     <!-- android:authorities needs to be unique to an app, so we cannot hardcode it  -->
     <provider
-      android:name="androidx.core.content.FileProvider"
-      android:authorities="${applicationId}.reactnativedocumentviewer.fileprovider"
+      android:name=".DocumentViewerFileProvider"
+      android:authorities="${applicationId}.fileprovider"
       android:exported="false"
       android:grantUriPermissions="true">
       <meta-data

packages/document-viewer/android/src/main/java/com/reactnativedocumentviewer/DocumentViewerFileProvider.kt

@@ -0,0 +1,12 @@
+package com.reactnativedocumentviewer;
+
+import androidx.core.content.FileProvider
+
+/**
+ * Empty subclass of [FileProvider] used so this library's provider has a unique
+ * [android:name] in the manifest. That prevents the manifest merger from merging
+ * this provider with another library's FileProvider,
+ * which would cause an "Attribute provider@authorities value=... is also present at..."
+ * conflict.
+ */
+class DocumentViewerFileProvider : FileProvider()

packages/document-viewer/android/src/main/java/com/reactnativedocumentviewer/RNDocumentViewerModule.kt

@@ -61,7 +61,7 @@ class RNDocumentViewerModule(reactContext: ReactApplicationContext) : NativeDocu
       // Package name may not be the same as applicationId but usually is.
       // Also see document-viewer/android/src/main/AndroidManifest.xml
       val applicationId = androidApplicationId ?: reactApplicationContext.packageName
-      val authority = "$applicationId.reactnativedocumentviewer.fileprovider"
+      val authority = "$applicationId.fileprovider"
       val uri = Uri.parse(bookmarkOrUri)
       val uriPath = uri.path ?: throw IllegalArgumentException("file:// uri must have a path")
       val fileUri = FileProvider.getUriForFile(