Added advanced folder picker (fixes #170).

src/main/java/com/nutomic/syncthingandroid/activities/FolderPickerActivity.java

@@ -6,9 +6,11 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.os.Environment;
 import android.os.IBinder;
+import android.preference.PreferenceManager;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
@@ -19,6 +21,7 @@ import android.widget.ArrayAdapter;
 import android.widget.EditText;
 import android.widget.ListView;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import com.nutomic.syncthingandroid.R;
 import com.nutomic.syncthingandroid.syncthing.SyncthingService;
@@ -72,6 +75,11 @@ public class FolderPickerActivity extends SyncthingActivity
             mRootDirectories.addAll(Arrays.asList(getExternalFilesDirs(null)));
         }
         mRootDirectories.add(Environment.getExternalStorageDirectory());
+        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
+        if (sp.getBoolean("advanced_folder_picker", false)) {
+            mRootDirectories.add(new File("/"));
+        }
+
         for (File f : mRootDirectories) {
             mRootsAdapter.add(f);
         }
@@ -145,8 +153,11 @@ public class FolderPickerActivity extends SyncthingActivity
      */
     private void createFolder(String name) {
         File newFolder = new File(mLocation, name);
-        newFolder.mkdir();
+        if (newFolder.mkdir()) {
             displayFolder(newFolder);
+        } else {
+            Toast.makeText(this, R.string.create_folder_failed, Toast.LENGTH_SHORT).show();
+        }
     }
 
     /**

src/main/res/values/strings.xml

@@ -214,6 +214,8 @@ Please report any problems you encounter via Github.</string>
 
     <string name="sync_only_wifi">Sync only on wifi</string>
 
+    <string name="advanced_folder_picker">Use advanced Folder Picker</string>
+
     <string name="syncthing_options">Syncthing Options</string>
 
     <string name="listen_address">Sync Protocol Listen Addresses</string>
@@ -279,6 +281,8 @@ Please report any problems you encounter via Github.</string>
     <!-- Menu item to select the current folder -->
     <string name="select_folder">Select Folder</string>
 
+    <string name="create_folder_failed">Failed to create folder</string>
+
     <!-- SyncthingService -->
 
 

src/main/res/xml/app_settings.xml

@@ -16,6 +16,11 @@
         android:title="@string/sync_only_wifi"
         android:defaultValue="false" />
 
+    <CheckBoxPreference
+        android:key="advanced_folder_picker"
+        android:title="@string/advanced_folder_picker"
+        android:defaultValue="false" />
+
     <PreferenceScreen
         android:key="syncthing_options"
         android:title="@string/syncthing_options"