SearchView memory leak

问题

I am getting a memory leak from SearchView menu item

this is my code

    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        if (hasSearchOption()) {
            MenuItem item = menu.findItem(R.id.action_search);
            if (item == null) {
                inflater.inflate(R.menu.search_menu, menu);
                // Associate searchable configuration with the SearchView
                SearchManager searchManager =
                        (SearchManager) Controller.getContext().getSystemService(Context.SEARCH_SERVICE);
                MenuItem searchItem = menu.findItem(R.id.action_search);
                SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
                ComponentName cn = new ComponentName(getApplicationContext(), TestActivity.class);
                searchView.setSearchableInfo(
                        searchManager.getSearchableInfo(cn));
                searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
                    @Override
                    public boolean onQueryTextSubmit(String s) {
                         //DO STUFF
                        return false;
                    }

                    @Override
                    public boolean onQueryTextChange(String s) {
                        return false;
                    }
                });
            }
        }
    }

Class Name

         | Ref. Objects | Shallow Heap | Ref. Shallow Heap | Retained Heap
-----------------------------------------------------------------------------------------------------------------------------------------------------------
mOnQueryChangeListener com.test.fragments.TestFragmentImpl$1 @ 0xa58ff9c0|            1 |           16 |                16 |            16
-----------------------------------------------------------------------------------------------------------------------------------------------------------

if i comment out setting the setOnQueryTextListener the leak disappears. I don't understand this leak cause the body of the search is empty so how is it leaking?

回答1:

From your fragment, save a reference to your searchItem MenuItem from your onCreateOptionsMenu and then simply override onDestroyOptionsMenu() and call searchView.setOnQueryTextListener(null) like so:

// Set this in your onCreateOptionsMenu method

private MenuItem searchItem; 


@Override
public void onDestroyOptionsMenu()
{
    SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
    searchView.setOnQueryTextListener(null);
    searchItem = null;
}

来源：https://stackoverflow.com/questions/28508256/searchview-memory-leak