CODEWITHSUNDEEP
javaandroidandroid-context
Shudy
Shudy

Reputation: 7936

How can I acces to getSupportFragmentManager in external java listener

I have to set the listener for a NavigationView in my main class. But the main, will containt a lot of stuff, and I want to have it the most "separated" possible.

So I will do listeners in their own java files, to something like:

navigationView.setNavigationItemSelectedListener(new NavigationListener());

The problem comes, that I have to call getSupportFragmentManager , but is not accesible, so, I suppose that I need to do something like: context.getSupportFragmentManager to make ir "work".

But I don't know how to get the context.

How can I get it?

ListenerClass:

public class NavigationListener implements NavigationView.OnNavigationItemSelectedListener {
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        boolean fragmentTransaction = false;
        String TAG = "NavigationViewListener";
        Logger.init(TAG);
        Fragment fragment = null;
        switch (item.getItemId()){
            case R.id.nav_home:
                fragment = new FragmentHome();
                fragmentTransaction = true;
                break;
            case R.id.nav_map:
                fragment = new FragmentMap();
                fragmentTransaction = true;
                break;
            case R.id.nav_log_out:
                Logger.d("Pulsada opnción de LogOut");
                break;
        }

        if(fragmentTransaction){
            getSupportFragmentManager().beginTransaction()
                    .replace(R.id.main_content, fragment)
                    .commit();

            item.setChecked(true);
            getSupportActionBar().setTitle(item.getTitle());
        }
    }
}

Upvotes: 1

Views: 2094

Answers (1)

earthw0rmjim
earthw0rmjim

Reputation: 19427

You could just pass the instance of your FragmentActivity to NavigationListener as a constructor param:

public class NavigationListener implements NavigationView.OnNavigationItemSelectedListener {

    FragmentActivity activity;        

    public NavigationListener(FragmentActivity activity) {
        this.activity = activity;
    }

    @Override
    public boolean onNavigationItemSelected(MenuItem item) {

        // ...

        if(fragmentTransaction){
            activity.getSupportFragmentManager().beginTransaction()
                .replace(R.id.main_content, fragment)
                .commit();

            // ...
        }
    }
}

From your FragmentActivity:

navigationView.setNavigationItemSelectedListener(new NavigationListener(this));

Upvotes: 1

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