मेरे पास एक ऐप है जिसे क्षैतिज रूप से रखे गए 2 टुकड़ों के साथ एक गतिविधि मिली।
मेरी गतिविधि में मैंने उपयोग onCreateOptionsMenu()करके मेनू को फुलाया, जिसका उपयोग मैं एक्शनबार विकल्प मेनू प्रदर्शित करने में सक्षम हूं। लेकिन जब मैं अपने एक टुकड़े से एक्शन बार मेनू आइटम को अपडेट करने की कोशिश करता हूं, तो onCreateoptionsmenu()उसे नहीं बुलाया जाता है। इसलिए, मैं एक्शन बार विकल्प मेनू को अपडेट करने में सक्षम नहीं हूं।
मेरी गतिविधि का कोड इस प्रकार है:
myActivity.java
package com.andr.androidtablelist;
import java.io.IOException;
import android.app.ActionBar;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;
import com.andr.fragments.ListLeftFragment;
import com.andr.utils.DBHelper;
public class TabletActivity extends Activity {
ActionBar actionBar = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DBHelper dbhelper;
dbhelper = new DBHelper(this);
try {
dbhelper.createDatabase();
} catch (IOException ex) {
ex.printStackTrace();
}
setContentView(R.layout.activity_tablet);
actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(false);
getFragmentManager().beginTransaction()
.replace(R.id.master, ListLeftFragment.newInstance()).commit();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.tablet, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Toast.makeText(
getApplicationContext(),
"Back Stack Count::"
+ getFragmentManager().getBackStackEntryCount(),
Toast.LENGTH_LONG).show();
if (getFragmentManager().getBackStackEntryCount() == 1) {
actionBar.setDisplayHomeAsUpEnabled(false);
}
if (getFragmentManager().getBackStackEntryCount() > 1) {
getFragmentManager().popBackStack();
}
return true;
}
return super.onOptionsItemSelected(item);
}
}
// http://www.vogella.com/articles/AndroidListView/article.htmlmyFragment.java
package com.andr.fragments;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Fragment;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.TextView;
import com.andr.androidtablelist.R;
import com.andr.helper.LazyHelper;
public class ListLeftFragment extends Fragment{
private static ListLeftFragment listFragment = null;
public static ListLeftFragment newInstance(){
listFragment = new ListLeftFragment();
return listFragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_listlayout, container,false);
getActivity().invalidateOptionsMenu();
ListView lv = (ListView)v.findViewById(R.id.lview);
String[] values = new String[] { "Android", "iPhone", "WindowsMobile",
"Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X",
"Linux", "OS/2", "Ubuntu", "Windows7", "Max OS X", "Linux",
"OS/2", "Ubuntu", "Windows7", "Max OS X", "Linux", "OS/2",
"Android", "iPhone", "WindowsMobile" };
getActivity().getActionBar().setTitle("LeftList");
ArrayList<String> list = new ArrayList<String>();
LazyHelper lHelper = new LazyHelper(getActivity());
list = lHelper.getLazyDetials();
/* for (int i = 0; i < values.length; ++i) {
list.add(values[i]);
}
final StableArrayAdapter adapter = new StableArrayAdapter(getActivity(),
android.R.layout.simple_list_item_1, list);*/
LeftListAdapter lAdapter = new LeftListAdapter(getActivity(),list);
lv.setAdapter(lAdapter);
lv.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,
int pos, long arg3) {
final String clickedData = (String)arg0.getItemAtPosition(pos);
Bundle bundle = new Bundle();
bundle.putString("clickedItemName", clickedData);
Fragment detailFragment = DetailFormRightFragment.newInstance();
detailFragment.setArguments(bundle);
getActivity().getFragmentManager().beginTransaction().replace(R.id.details, detailFragment).addToBackStack(null).commit();
}
}
);
return v;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
getActivity().getMenuInflater().inflate(R.menu.search, menu);
SearchView searchView=(SearchView)menu.findItem(R.id.search);
searchView.setIconifiedByDefault(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
super.onOptionsItemSelected(item);
return false;
}
@Override
public void onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
/*MenuItem item;
menu.clear();
getActivity().getMenuInflater().inflate(R.menu.search, menu);
SearchView searchView=(SearchView)menu.findItem(R.id.search);
searchView.setIconifiedByDefault(true);*/
}
private class StableArrayAdapter extends ArrayAdapter<String> {
HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();
public StableArrayAdapter(Context context, int textViewResourceId,
List<String> objects) {
super(context, textViewResourceId, objects);
for (int i = 0; i < objects.size(); ++i) {
mIdMap.put(objects.get(i), i);
}
}
@Override
public long getItemId(int position) {
String item = getItem(position);
return mIdMap.get(item);
}
@Override
public boolean hasStableIds() {
return true;
}
}
private class LeftListAdapter extends BaseAdapter implements OnClickListener {
private Context mcontext;
ArrayList<String> listData;
private LayoutInflater inflater=null;
public LeftListAdapter(Context context, ArrayList<String> listItems) {
mcontext=context;
listData=listItems;
inflater = (LayoutInflater)mcontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return listData.size();
}
@Override
public Object getItem(int arg0) {
return null;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View view, ViewGroup arg2) {
// create a ViewHolder reference
View vi=view;
if(vi==null){
vi = inflater.inflate(R.layout.item, null);
}
TextView text=(TextView)vi.findViewById(R.id.text);
text.setText(listData.get(position));
vi.setOnClickListener(this);
return vi;
}
@Override
public void onClick(View vi) {
TextView text=(TextView)vi.findViewById(R.id.text);
Bundle bundle = new Bundle();
bundle.putString("clickedItemName", text.getText().toString());
Fragment detailFragment = DetailFormRightFragment.newInstance();
detailFragment.setArguments(bundle);
getActivity().getFragmentManager().beginTransaction().replace(R.id.details, detailFragment).addToBackStack(null).commit();
}
}
}