GlobalScreenshot: Fix screenshot not saved with some languages

import java.io.File;

import java.io.FileOutputStream;

import java.io.OutputStream;

import java.io.UnsupportedEncodingException;

import java.text.DateFormat;

import java.text.SimpleDateFormat;

import java.util.Date;

        CharSequence appName = getRunningActivityName(context);

        boolean onKeyguard = context.getSystemService(KeyguardManager.class).isKeyguardLocked();

        if (!onKeyguard && appName != null) {

            // Replace all spaces and special chars with an underscore

            String appNameString = appName.toString().replaceAll("[\\\\/:*?\"<>|\\s]+", "_");

            String appNameString = appName.toString();

            try {

                // With some languages like Virgin Islands English, the Settings app gets a weird

                // long name and some special voodoo chars, so we convert the string to utf-8 to get

                // a  char instead, easy to remove it then

                final String temp = new String(appNameString.getBytes("ISO-8859-15"), "UTF-8");

                appNameString = temp.replaceAll("[]+", "");

            } catch (UnsupportedEncodingException e) {

                // Do nothing

            }

            // Now replace all spaces and special chars with an underscore

            appNameString = appNameString.replaceAll("[\\\\/:*?\"<>|\\s]+", "_");

            mImageFileName = String.format(SCREENSHOT_FILE_NAME_TEMPLATE_APPNAME,

                    imageDate, appNameString);

        } else {