osm prefs: add support for convoluted Android 5+ external/primary storage URLs

src/PrefsAct.scala

@@ -3,6 +3,7 @@ package org.aprsdroid.app
 import _root_.android.content.Intent
 import _root_.android.net.Uri
 import _root_.android.os.Bundle
+import _root_.android.os.Environment
 import _root_.android.preference.Preference
 import _root_.android.preference.Preference.OnPreferenceClickListener
 import _root_.android.preference.PreferenceActivity
@@ -26,21 +27,35 @@ class PrefsAct extends PreferenceActivity {
 		fileChooserPreference("themefile", 123457)
 	}
 
+	def resolveContentUri(uri : Uri) = {
+		val Array(storage, path) = uri.getPath().replace("/document/", "").split(":", 2)
+		android.util.Log.d("PrefsAct", "resolveContentUri s=" + storage + " p=" + path)
+		if (storage == "primary")
+			Environment.getExternalStorageDirectory() + "/" + path
+		else
+			"/storage/" + storage + "/" + path
+	}
+
 	def parseFilePickerResult(data : Intent, pref_name : String, error_id : Int) {
 		val file = data.getData().getScheme() match {
 		case "file" =>
 			data.getData().getPath()
 		case "content" =>
-			// fix up Uri for KitKat+; http://stackoverflow.com/a/27271131/539443
-			val fixup_uri = Uri.parse(data.getDataString().replace(
-				"content://com.android.providers.downloads.documents/document",
-				"content://downloads/public_downloads"))
-			val cursor = getContentResolver().query(fixup_uri, null, null, null, null)
-			cursor.moveToFirst()
-			val idx = cursor.getColumnIndex("_data")
-			val result = if (idx != -1) cursor.getString(idx) else null
-			cursor.close()
-			result
+			// fix up Uri for KitKat+; http://stackoverflow.com/a/20559175/539443
+			// http://stackoverflow.com/a/27271131/539443
+			if ("com.android.externalstorage.documents".equals(data.getData().getAuthority())) {
+				resolveContentUri(data.getData())
+			} else {
+				val fixup_uri = Uri.parse(data.getDataString().replace(
+					"content://com.android.providers.downloads.documents/document",
+					"content://downloads/public_downloads"))
+				val cursor = getContentResolver().query(fixup_uri, null, null, null, null)
+				cursor.moveToFirst()
+				val idx = cursor.getColumnIndex("_data")
+				val result = if (idx != -1) cursor.getString(idx) else null
+				cursor.close()
+				result
+			}
 		case _ =>
 			null
 		}