CODEWITHSUNDEEP
javaandroid
DN2048
DN2048

Reputation: 3804

Different Override method based on condition

This is an Android project but the question is more related to JAVA itself.

I'm trying to override a method in an Activity but I want this method to run different code based on two conditions: if a user is logged in and what type of user.

The method I'm overriding is the dispatchTouchEvent which is called, at least one time, every time the user touches the screen.

I could put the conditions inside the method however as a mention earlier, this is a method that is called a lot so I was trying to avoid doing extra logic over and over on it.

Ideally I wanted something like this:

if (isUserLogged) {
    if (user.getType == 'A') {
        @Override
        public boolean dispatchTouchEvent(MotionEvent ev) {
            if (//condition based on ev)
                return super.dispatchTouchEvent(ev);
            else
                return true;
        }
    }
    else {
        @Override
        public boolean dispatchTouchEvent(MotionEvent ev) {
            if (//different condition based on ev)
                return super.dispatchTouchEvent(ev);
            else
                return true;
        }
    }
}

Of course this is not possible.

Any tips on how I could avoid putting all the code inside the method?

Upvotes: 2

Views: 1549

Answers (2)

Luke Melaia
Luke Melaia

Reputation: 1468

While I'm sure you know this is not possible, something similar is possible and quite possibility what you want. Maybe just using an if/switch inside your onCall() method and then call an appropriate method.

Example

public void onTouch(SomeEvent e){
    if(a){
        methodA();
    } else if (b) {
        methodB();
    }
}

void methodA ();//for simplicity
void methodB ();

Upvotes: 1

mvd
mvd

Reputation: 2720

You can create different implementations of an interface which shares the dispatchTouchEvent method. Take a look at the Strategy Pattern.

Upvotes: 3

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