调用onPrepareOptionsMenu时将触发SearchView.OnQueryTextListener方法onQueryTextChange [英] The SearchView.OnQueryTextListener method, onQueryTextChange, fires when onPrepareOptionsMenu is called

问题描述

在调用invalidateOptionsMenu()之后调用onPrepareOptionsMenu时，将触发SearchView.OnQueryTextListener方法onQueryTextChange.

The SearchView.OnQueryTextListener method, onQueryTextChange, fires when onPrepareOptionsMenu is called after I invoke invalidateOptionsMenu().

我的SearchView OnQueryTextListener.

My SearchView OnQueryTextListener..

final private SearchView.OnQueryTextListener queryListener = new SearchView.OnQueryTextListener() {

  @Override
  public boolean onQueryTextChange(String newText) {
    loaderID = 1;
    Bundle args = new Bundle();
    args.putInt("loaderID", loaderID);
    if(!TextUtils.isEmpty(newText)){
      uri = Uri.parse(DataProvider.URIPREPEND + DataProvider.SEARCH + "/?" + newText);
      Log.d("D", "onQueryTextChange() Search URI: " + uri.toString());
    }
    args.putParcelable("uri", uri);
    try{
      Log.d("D", "onQueryTextChange() case: search");
      fragment.onMessage(args);
    }catch (ClassCastException cce){

    }
    return false;
  }
  @Override
  public boolean onQueryTextSubmit(String query) {
    // Toast.makeText(getActivity(), "Searching for: " + query + "...", Toast.LENGTH_SHORT).show();
    return false;
  }
};

每当我从onOptionsItemSelected()内部调用invalidateOptionsMenu()时，它就会被调用.

It gets called every time I invoke invalidateOptionsMenu() from within onOptionsItemSelected()..

@Override
public boolean onOptionsItemSelected(MenuItem item) {
  Bundle args;
  switch (item.getItemId()) {
    case android.R.id.home:
      uri = Uri.parse(DataProvider.URIPREPEND + DataProvider.BOOKMARKS);
      loaderID = 0;
      args = new Bundle();
      args.putParcelable("uri", uri);
      args.putInt("loaderID", loaderID);
      try{
        Log.d("D", "onOptionsItemSelected() case: home");
        fragment.onMessage(args);
        invalidateOptionsMenu();
      }catch (ClassCastException cce){

      }
      return true;
    default:
      return super.onOptionsItemSelected(item);
  }
}

据我了解，我管理onCreateOptionsMenu()中的SearchView，该一次被称为一次.我很困惑onPrepareOptionsMenu()如何使我的textListener中的onQueryTextChange被调用.

I manage the SearchView in onCreateOptionsMenu() which is called once, to my understanding. I am confused how onPrepareOptionsMenu() could make the onQueryTextChange in my textListener to get called.

@Override
public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.menu, menu);
  // Associate searchable configuration with the SearchView
  SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
  SearchView searchView = (SearchView) menu.findItem(R.id.searchactionbaritem).getActionView();
  //searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
  searchView.setOnQueryTextListener(queryListener);

  return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onPrepareOptionsMenu(Menu menu){
  menu.setGroupEnabled(R.id.browse_group, true);
  menu.setGroupVisible(R.id.browse_group, true);
  menu.setGroupEnabled(R.id.recipe_group, false);
  menu.setGroupVisible(R.id.recipe_group, false);
  // home
  if (loaderID == 0) {
    Log.d("D", "mListFragment/onPrepareOptionsMenu() home");
    menu.findItem(android.R.id.home).setEnabled(false).setIcon(R.drawable.ic_home_black_48dp);
    menu.findItem(R.id.browse).setEnabled(true).setIcon(R.drawable.ic_browse_all_white_48dp);
  } else { // browse_all or search
    if(uri.getQuery() != null){ // search
      Log.d("D", "mListFragment/onPrepareOptionsMenu() search");
      menu.findItem(android.R.id.home).setEnabled(true).setIcon(R.drawable.ic_home_white_48dp);
      menu.findItem(R.id.browse).setEnabled(true).setIcon(R.drawable.ic_browse_all_white_48dp);
    }else{ // browse_all
      Log.d("D", "mListFragment/onPrepareOptionsMenu() browse_all");
      menu.findItem(android.R.id.home).setEnabled(true).setIcon(R.drawable.ic_home_white_48dp);
      menu.findItem(R.id.browse).setEnabled(false).setIcon(R.drawable.ic_browse_all_black_48dp);
    }
  }

  return super.onPrepareOptionsMenu(menu);
}

如果我删除了invalidateOptionsMenu()，则我的搜索小部件将按预期工作.当它在那里时，即使我根本没有单击搜索小部件，我的搜索文本侦听器也会被调用.

If I remove the invalidateOptionsMenu() then my search widget works as expected. When it is there, my search text listener gets called even when I haven't clicked on the search widget at all.

推荐答案

我删除了...

  SearchView searchView = (SearchView) menu.findItem(R.id.searchactionbaritem).getActionView();     
  searchView.setOnQueryTextListener(queryListener);

从onCreateOptionsMenu()放到onPrepareOptionsMenu()中，它又可以正常工作.

from the onCreateOptionsMenu() and put it in the onPrepareOptionsMenu() and it is working normally again.

我希望这对其他人有帮助.我认为这与invalidateOptionsMenu()破坏SearchView与actionview的关联有关.

I hope this helps someone else. I think it has something to do with invalidateOptionsMenu() breaking the SearchView's association with the actionview.

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