Android Spinner onItemSelected未触发

Question

美好的一天。

我尝试从Spinner下拉列表中选择项目。但是，当我点击下拉列表项时，下拉列表des不会关闭。

我开始调试并意识到当我点击下拉列表项时，不会触发onItemSelected方法。但是，首次初始化下拉列表时，会触发该方法。

单击Spinner下拉列表项时是否有任何方法可以触发onItemSelected？

下面是我的Spinner Activity和我的Cursor Adapter类的代码。

public class ActivitySearch extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Cursor>, AdapterView.OnItemSelectedListener  {
private EditText mSearchTextInput;
private TextInputLayout mSearchTextTextInputLayout;
private AppCompatSpinner mMySpinner;
private AppCompatButton mSearchButton;
private String mModName;
private SearchTextWithSpinnerAdapter mAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search_text_with);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    mSearchTextInput = (EditText) findViewById(R.id.searchTextInput);
    mSearchTextTextInputLayout = (TextInputLayout) findViewById(R.id.searchTextTextInputLayout);
    mMySpinner= (AppCompatSpinner) findViewById(R.id.mMySpinner);
    mSearchButton = (AppCompatButton) findViewById(R.id.searchButton);

    setSupportActionBar(toolbar);
    if(getSupportActionBar() != null) {
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });

    Bundle extras = getIntent().getExtras();
    int defaultModName;
    if(extras != null) {
        mSearchTextInput.setText(extras.getString(ARG_SEARCH_KEYWORD, ""));
        mModName = extras.getString(ARG_MOD_NAME, "");
    } else {
        Toast.makeText(this, getString(R.string.toast_invalid_data), Toast.LENGTH_LONG).show();
    }

    //Set adapter for spinner list
    mAdapter = new SearchTextWithSpinnerAdapter(this, null, -1, new SearchTextWithSpinnerAdapter.ListViewListener() {
        @Override
        public void onSpinnerItemClicked(String count) {

            mMySpinner.performClick();

            int defaultModName;

.........................

            mMySpinner.setSelection(defaultModName);

            if (mMySpinner!= null) {
                try {
                    Method method = Spinner.class.getDeclaredMethod("onDetachedFromWindow");
                    method.setAccessible(true);
                    method.invoke(mMySpinner);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    });

    mMySpinner.setAdapter(mAdapter);

    getSupportLoaderManager().initLoader(0, null, this);

    mMySpinner.setOnItemSelectedListener(this);

    mMySpinner.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            final InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            inputMethodManager.hideSoftInputFromWindow(mMySpinner.getWindowToken(), 0);
            return false;
        }
    });

    mMySpinner.setSelection(defaultModName);
    mMySpinner.setSelected(true);

}

@Override
protected void onResume() {
    super.onResume();
    EventBus.getDefault().register(this);
}

@Override
protected void onPause() {
    super.onPause();
    EventBus.getDefault().unregister(this);
}

@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
    mMySpinner.setSelection(position);
}

@Override
public void onNothingSelected(AdapterView<?> parent) {
}


@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    String[] projection = { }...

}

@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
    mAdapter.changeCursor(data);
}

@Override
public void onLoaderReset(Loader<Cursor> loader) {
    // data is not available anymore, delete reference
    if(mAdapter != null) {
        mAdapter.swapCursor(null);
    }
}

这是我的CursorAdapter：

public class SpinnerAdapter extends CursorAdapter {
private LayoutInflater mInflater;
private ListViewListener mCallback;

public interface ListViewListener {
    void onSpinnerItemClicked(String count);
}

private static class ViewHolder  {
    LinearLayout myRow;
    ImageView profileImage;
    TextView NameText;
    TextView DescText;
}

public SpinnerAdapter (Activity activity, Cursor data, int flags, ListViewListener listener) {
    super(activity, data, flags);
    mInflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    mCallback = listener;
}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    View view = mInflater.inflate(R.layout.row_view_activity_search_text_with, parent, false);
    ViewHolder viewHolder = new ViewHolder();
    viewHolder.Row = (LinearLayout) view.findViewById(R.id.myRow);
    viewHolder.profileImage = (ImageView) view.findViewById(R.id.profileImage);
    viewHolder.NameText = (TextView) view.findViewById(R.id.NameText);
    viewHolder.DescText = (TextView) view.findViewById(R.id.DescText);
    view.setTag(viewHolder);
    return view;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {
    ViewHolder viewHolder = (ViewHolder) view.getTag();

    viewHolder.Row.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (mCallback != null) {
                mCallback.onSpinnerItemClicked(xxx);
            }
        }
    });
}
}

非常感谢任何帮助。

谢谢。