我有两个带有上下文菜单的选项卡但是当一个工作时，另一个不会在同一页面上工作，但在不同的选项卡上。这是我的代码，谢谢我无法让它工作。
public class OwnerTabs extends AppCompatActivity {
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
SharedPreferences pref;
SharedPreferences.Editor editor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_owner_tabs);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
pref = getSharedPreferences("Login.conf", Context.MODE_PRIVATE);
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager.setOffscreenPageLimit(2);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent in = new Intent(OwnerTabs.this, InsertActivity.class);
startActivity(in);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main,menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if(id == R.id.action_logout){
editor = pref.edit();
editor.clear();
editor.commit();
Intent in = new Intent (getApplicationContext(), MainActivity.class);
startActivity(in);
finish();
}
return super.onOptionsItemSelected(item);
}
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (getArguments().getInt(ARG_SECTION_NUMBER) == 1){
View rootView = inflater.inflate(R.layout.content_ownerhome, container, false);
return rootView;
}
else if(getArguments().getInt(ARG_SECTION_NUMBER) == 2){
View rootView = inflater.inflate(R.layout.content_rented, container, false);
return rootView;
}
else if(getArguments().getInt(ARG_SECTION_NUMBER) == 3){
View rootView = inflater.inflate(R.layout.fragment_owner_tabs, container, false);
TextView textView = (TextView) rootView.findViewById(R.id.section_label);
textView.setText("This content is under construction. Thank you!!");
return rootView;
}
else {
View rootView = inflater.inflate(R.layout.fragment_owner_tabs, container, false);
TextView textView = (TextView) rootView.findViewById(R.id.section_label);
textView.setText(getString(R.string.section_format, getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
}
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return PlaceholderFragment.newInstance(position + 1);
}
@Override
public int getCount() {
// Show 3 total pages.
return 3;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Your Cars";
case 1:
return "Pending Cars";
case 2:
return "GPS";
}
return null;
}
}
}
public class ownerFragment extends Fragment implements AsyncResponse, AdapterView.OnItemClickListener {
final String TAG = this.getClass().getName();
private ArrayList<Cars> carList;
private ListView lvCars;
private FunDapter<Cars> adapter;
SharedPreferences pref;
private String LOG = "ownerhome";
TextView tvUser;
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getActivity().getMenuInflater();
inflater.inflate(R.menu.list_context_menu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
final Cars selectedCar = adapter.getItem(info.position);
if (item.getItemId() == R.id.menuUpdate) {
Intent in = new Intent(getActivity(), UpdateActivty.class);
in.putExtra("cars", selectedCar);
startActivity(in);
} else if (item.getItemId() == R.id.menuDelete) {
AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
alert.setMessage("Are you sure to remove " + selectedCar.Car_Model + "?");
alert.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
carList.remove(selectedCar);
adapter.notifyDataSetChanged();
HashMap postData = new HashMap();
postData.put("Car_No", "" + selectedCar.Car_No);
postData.put("mobile", "android");
PostResponseAsyncTask taskPost = new PostResponseAsyncTask(getActivity(), postData, new AsyncResponse() {
@Override
public void processFinish(String s) {
Log.d(TAG, s);
if (s.contains("success")) {
Toast.makeText(getActivity().getApplicationContext(), "Car deleted!!", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getActivity().getApplicationContext(), "Error", Toast.LENGTH_SHORT).show();
}
}
});
taskPost.execute("http://carkila.esy.es/delete.php");
}
});
alert.setNegativeButton("Cancel", null);
alert.show();
}
return super.onContextItemSelected(item);
}
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.kun.carkila.ListActivity">
<item
android:id="@+id/menuUpdate"
android:orderInCategory="1"
android:title="Update"
app:showAsAction="never" />
<item
android:id="@+id/menuDelete"
android:orderInCategory="2"
android:title="Delete"
app:showAsAction="never" />
</menu>
public class rentedActivityFragment extends Fragment implements AsyncResponse, AdapterView.OnItemClickListener {
final String TAG = this.getClass().getName();
private ArrayList<RentedCars> carList;
private ListView lvRented;
private FunDapter<RentedCars> adapter;
SharedPreferences pref;
public rentedActivityFragment() {
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getActivity().getMenuInflater();
inflater.inflate(R.menu.reject_context_menu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
final RentedCars selectedCar = adapter.getItem(info.position);
if(item.getItemId() == R.id.menuAccept){
Intent in = new Intent(getActivity(), ownerAccept.class);
in.putExtra("cars", selectedCar);
startActivity(in);
}else if (item.getItemId()==R.id.menuReject){
AlertDialog.Builder alert = new AlertDialog.Builder(getActivity());
alert.setMessage("Are you sure to reject "+selectedCar.carModel +"?");
alert.setPositiveButton("Reject", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
carList.remove(selectedCar);
adapter.notifyDataSetChanged();
HashMap postData = new HashMap();
postData.put("resID", "" + selectedCar.resID);
postData.put("mobile", "android");
PostResponseAsyncTask taskPost = new PostResponseAsyncTask(getActivity(), postData, new AsyncResponse() {
@Override
public void processFinish(String s) {
Log.d(TAG, s);
if (s.contains("success")) {
Toast.makeText(getActivity().getApplicationContext(), "Reservation rejected", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getActivity().getApplicationContext(), "Error", Toast.LENGTH_SHORT).show();
}
}
});
taskPost.execute("http://carkila.esy.es/rejectrent.php");
}
});
alert.setNegativeButton("Cancel",null);
alert.show();
}
return super.onContextItemSelected(item);
}
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.kun.carkila.ListActivity">
<item
android:id="@+id/menuAccept"
android:orderInCategory="1"
android:title="Accept"
app:showAsAction="never" />
<item
android:id="@+id/menuReject"
android:orderInCategory="2"
android:title="Reject"
app:showAsAction="never" />
</menu>
提前谢谢你们。 ：d