fix #84, handle view folder intent

Author: tibbi

app/src/main/AndroidManifest.xml

@@ -31,6 +31,12 @@
                 <category android:name="android.intent.category.OPENABLE"/>
                 <category android:name="android.intent.category.DEFAULT"/>
             </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:mimeType="resource/folder"/>
+            </intent-filter>
         </activity>
 
         <activity

app/src/main/kotlin/com/simplemobiletools/filemanager/activities/MainActivity.kt

@@ -79,16 +79,20 @@ class MainActivity : SimpleActivity() {
     private fun tryInitFileManager() {
         handlePermission(PERMISSION_WRITE_STORAGE) {
             if (it) {
-                initRootFileManager()
+                initFileManager()
             } else {
                 toast(R.string.no_storage_permissions)
                 finish()
             }
         }
     }
 
-    private fun initRootFileManager() {
-        openPath(config.homeFolder)
+    private fun initFileManager() {
+        if (intent.action == Intent.ACTION_VIEW && intent.data != null && intent.data.scheme == "file") {
+            openPath(intent.data.path)
+        } else {
+            openPath(config.homeFolder)
+        }
     }
 
     private fun openPath(path: String) {