Recursive removal of shared_prefs in SettingsFragment

src/org/linphone/LinphoneUtils.java

@@ -23,6 +23,7 @@ import static android.view.View.VISIBLE;
 
 import java.io.BufferedOutputStream;
 import java.io.BufferedReader;
+import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -464,5 +465,18 @@ public final class LinphoneUtils {
 		}
 		return extension;
 	}
+	
+	public static void recursiveFileRemoval(File root) {
+		if (!root.delete()) {
+			if (root.isDirectory()) {
+				File[] files = root.listFiles();
+		        if (files != null) {
+		            for (File f : files) {
+		            	recursiveFileRemoval(f);
+		            }
+		        }
+			}
+		}
+	}
 }
 

src/org/linphone/SettingsFragment.java

@@ -96,8 +96,8 @@ public class SettingsFragment extends PreferencesListFragment {
 	}
 	
 	private void removePreviousPreferencesFile() {
-		File dir = new File(getContext().getFilesDir().getAbsolutePath() + "shared_prefs");
+		File dir = new File(getActivity().getFilesDir().getAbsolutePath() + "shared_prefs");
-		dir.delete();
+		LinphoneUtils.recursiveFileRemoval(dir);
 	}
 
 	// Inits the values or the listener on some settings