Android 4.4 PreferenceActivity fix

gistfile1.java

    @TargetApi(Build.VERSION_CODES.KITKAT)
    private void setupSimplePreferencesScreen() {
        if (!isSimplePreferences(this)) {
            return;
        }

        if (android.os.Build.VERSION.SDK_INT >= C.SDK_19) {
            if (!isValidFragment(initialFragment)) {
                throw new IllegalArgumentException("Invalid fragment for this activity: "
                        + initialFragment);
            }
        }

        getFragmentManager()
                .beginTransaction()
                .replace(android.R.id.content, new SimplePreferenceFragment())
                .commit();
    }