java - 如何允许访问类(class)？

Question

我知道，这个问题之前问过，但我无法解决这个问题。我想定义全局变量，所以我使用了extend application class。但我无法访问此子类。

我也创建了公共(public)构造函数。

我的父类(super class)和子类在这里:

class GlobalVariables extends Application {

    private int sessionid;
    private Locale locale;

    public GlobalVariables(){
    }

    public int getSessionid() {
        return sessionid;
    }

    public void setSessionid(int sessionid) {
        this.sessionid = sessionid;
    }

    public Locale getLocale() {
        return locale;
    }

    public void setLocale(Locale locale) {
        this.locale = locale;
    }
}

class Application extends Activity {

    Intent intent;
    int sessionid;
    Log log = new Log();
    SQLiteDatabase db2;
    GeneralLog db = new GeneralLog(this);

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        sessionid = getSessionId()+1;

        GlobalVariables glb = new GlobalVariables();
        glb.setSessionid(sessionid);

        setContentView(R.layout.application);
    }

    public int getSessionId() {
        SQLiteDatabase db2 = db.getReadableDatabase();
        final SQLiteStatement stmt = db2.compileStatement("SELECT MAX(sessionid) FROM LOG2");

        return (int) stmt.simpleQueryForLong();
    }

    public Application() {
    }
}

我收到这个错误:

java.lang.IllegalAccessException : access the class not allowed

Answer 1

扩展 Application 的类必须是 public

public class GlobalVariables extends Application