How to update a Fragment that has a Gridview populated from Sqlite

Question

I have a ViewPager with two tabs which holds fragment. Inside the first fragment, I have a Gridview which is being populated with Sqlite Db.

I have an custom alertdi

Answer 1

Here is a trick that i use to access Fragments inside a ViewPager in my custom viewPagerAdapter, i add two methods

public class CustomViewPagerAdapter extends FragmentPagerAdapter {
    .....
    private String getFragmentTag(int viewId, int index) {
            return "android:switcher:" + viewId + ":" + index;
    }

    //mFragManager is a reference to FragmentManager
    public Fragment getFragmentByTag(int containerId, int position) {
        return mFragManager.findFragmentByTag(getFragmentTag(containerId, position));
    }
}

then in your activity or wherever you can access the customViewPager

YourFragment frag = (YourFragment) customViewPager
                            .getFragmentByTag(YouViewPager.getId(), position);

after that, add a method in YourFragment refreshData (if you like the name!) and in it refresh the grid Hope this help