Access singleton class methods in blackberry 10

Question

I have implemented Singleton class method hpp and cpp like the following

Singleton.hpp

    class Singleton {
private:
    Singleton();

public:
    virtual ~Singleton();
    static Singleton &instance();

    int getMemberField();
    void setMemberField(int mf);

private:
    static Singleton    *p_instance;

    int                 m_memberField;
};

Singleton.cpp

Singleton* Singleton::p_instance=NULL ;

Singleton::Singleton() {
    p_instance = this;
    m_memberField = 0;
}

Singleton::~Singleton() {
    p_instance = NULL;
}

Singleton&    Singleton::instance() {
    if (p_instance==NULL) {
        p_instance = new Singleton();
    }
    return *p_instance;
}
int Singleton::getMemberField(){
    return m_memberField;
}

void Singleton::setMemberField(int mf){
     m_memberField = mf;
}

My problem is how to access those methods either set or get in application classes. Please help,

`p_instance = this;` this line is not needed because you do `p_instance = new Singleton();` in `instance()` — Borgleader, Aug 07 '13 at 06:16
Lets suppose that you do this to get the instance "Singleton *s = Singleton::instance(), then you can just call it like s->set() and s->get() — Saran-san, Aug 07 '13 at 06:17
Could you be more specific about what you are having problems with? — juanchopanza, Aug 07 '13 at 06:40
@Saran-san: note that his singleton is returning a ``Singleton``, not ``Singleton*``. — Marc Plano-Lesay, Aug 07 '13 at 07:30

score 2 · Accepted Answer · edited Aug 07 '13 at 06:56

2

Singleton::instance().setMemberField(42);

edited Aug 07 '13 at 06:56

Mike Seymour

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answered Aug 07 '13 at 06:15

nullptr

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Access singleton class methods in blackberry 10

1 Answers1