Question

我正在尝试实现一个SearchAutoComplete，它将在'实时'中显示http请求的结果，而无需实际按下搜索按钮。

我正在更新相应的适配器（获取正确的数据）。然而，只要我不重新发送请求，自动建议就不会再次弹出。因此，新适配器仅在适配器中已存在查询数据时才第二次工作。

我只需要一种方法来强制适配器数据立即更新适配器后显示。

这是一些代码：

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_tab_search, menu);

    MenuItem searchMenu = menu.findItem(R.id.action_search);
    mSearchView = (SearchView) searchMenu.getActionView();

    // Get SearchView autocomplete object.
    mSearchAutoComplete = mSearchView.findViewById(android.support.v7.appcompat.R.id.search_src_text);

    // Listen to search view item on click event.
    mSearchAutoComplete.setOnItemClickListener((adapterView, view, itemIndex, id) -> {
        //Index in adapter corresponds to index in searchResults, pass index
        updateFromSearch(itemIndex);
        if( ! mSearchView.isIconified()) {
            mSearchView.setIconified(true);
        }
        searchMenu.collapseActionView();

    });

    mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            Log.d(TAG,"onQueryTextSubmit");
            ApiManager.search(SearchActivity.this, query);
            return false;
        }

        //https://stackoverflow.com/a/35268540
        Handler handler = new Handler(Looper.getMainLooper());
        Runnable workRunnable;

        @Override
        public boolean onQueryTextChange(String newText) {
            Log.d(TAG,"onQueryTextChange");
            if (newText.length() > 3) {
                handler.removeCallbacks(workRunnable);
                workRunnable = () -> ApiManager.search(SearchActivity.this, newText);
                handler.postDelayed(workRunnable, 1000);
            }
            return false;
        }
    });

    return super.onCreateOptionsMenu(menu);
}

和适配器更新

private void updateSearchViewAdaper(List<String> data) {
    ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_dropdown_item_1line, data);
    mSearchAutoComplete.setAdapter(adapter);
    //mSearchAutoComplete.invalidate();
    /* I want this adapter to be shown immediatly after it has been updated */
}

以及成功搜索的回调：

@Override
public void onSearchSuccess(List<SearchResult> searchResults) {
    mSearchResults = searchResults;
    List<String> searchSuggestions = new ArrayList<>();
    for (SearchResult result : searchResults) {
        searchSuggestions.add(result.toString());
    }
    updateSearchViewAdaper(searchSuggestions);
}

更新适配器

0 个答案: