SherlockActivity无法解决成为一种类型

Question

我在下面的代码中收到以下错误消息

SherlockActivity cannot be resolved to a type

检查我的代码

public class SocietyInfo extends SherlockActivity{
    SQLiteDatabase db;
    EditText edt_society_name, edt_society_reg_no, edt_soceity_mob_no,et_society_register_user,et_society_app_passwd,edt_society_email_id,edt_society_email_passwd,edt_society_survay_no;
    EditText edt_society_pin,edt_society_city,edt_society_landmark,et_validity_date;
    Button btn_society_info_save,btn_society_passwd_save;
    EditText et_society_setting_passwd;
    int flag;
    Editor editor100;
    final SocietyInfo context = this;
    String validity_date;
    int a;
    String emailPattern = "[a-zA-Z0-9._-]+@[a-zA-Z]+\\.+[a-zA-Z]+";
    static SharedPreferences loc100;
    String cms_path;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    //  get().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        //getSupportActionBar().setTitle("Add Event");
        ActionBar ab = getActionBar();
        ab.setTitle("Society Info");
        setContentView(R.layout.activity_society_info);
        flag=getIntent().getIntExtra("flag",0);
        //Toast.makeText(getApplicationContext(), ""+flag, Toast.LENGTH_SHORT).show();
        edt_society_name = (EditText) findViewById(R.id.edt_society_name);