我想根据编辑文本中的文字显示或隐藏动作栏中的项目
因此,我做了以下工作
public class NounSearch extends android.app.Fragment
{
EditText seachEditText;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
View rootView = inflater.inflate(R.layout.nounsearchactivity, container, false);
//Intiate EditText
seachEditText =(EditText) rootView.findViewById(R.id.nounSearch);
seachEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_SEARCH) {
searchResult.Entities = new ArrayList<NounModel>();
_currentPage = 0;
categoryId = -1;
new GetNouns().execute();
return true;
}
return false;
}
});
seachEditText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
public void onTextChanged(CharSequence s, int start,
int before, int count) {
getActivity().invalidateOptionsMenu();
}
});
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
if(seachEditText.getText().toString().length() > 0)
{
menu.findItem(R.id.action_search).setVisible(true);
}
else
{
menu.findItem(R.id.action_search).setVisible(false);
}
}
}
但是actionitem永远不会出现
发布于 2014-08-09 14:58:09
试试这个:
@Override
public boolean onPrepareOptionsMenu(Menu menu, MenuInflater inflater) {
super.onPrepareOptionsMenu(menu, inflater);
if (seachEditText.getText().toString().length() > 0) {
menu.findItem(R.id.action_search).setVisible(true);
} else {
menu.findItem(R.id.action_search).setVisible(false);
}
}
https://stackoverflow.com/questions/25215853
复制相似问题