try fix file share

android/app/src/main/AndroidManifest.xml

@@ -26,5 +26,15 @@
             <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
       </activity>
+
+      <provider
+        android:name="cl.json.RNShareFileProvider"
+        android:authorities="${applicationId}.rnshare.fileprovider"
+        android:exported="false"
+        android:grantUriPermissions="true">
+        <meta-data
+          android:name="android.support.FILE_PROVIDER_PATHS"
+          android:resource="@xml/provider_paths" />
+      </provider>
     </application>
 </manifest>

android/app/src/main/res/xml/provider_paths.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <files-path name="files" path="." />
+    <cache-path name="cache" path="." />
+    <external-files-path name="external_files" path="." />
+    <external-cache-path name="external_cache" path="." />
+    <external-path name="external" path="." />
+</paths>