我有2个片段，一个包含List类，另一个是从列表中共享List的Favorites类。
如何从收藏夹片段中打开正确的活动
最喜欢的课程
public class FavoriteListFragment extends Fragment {
public static final String ARG_ITEM_ID = "favorite_list";
ListView favoriteList;
SharedPreference sharedPreference;
List<Station> favorites;
Activity activity;
ListAdapter listAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activity = getActivity();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_station_list, container,
false);
// Get favorite items from SharedPreferences.
sharedPreference = new SharedPreference();
favorites = sharedPreference.getFavorites(activity);
if (favorites == null) {
showAlert(getResources().getString(R.string.no_favorites_items),
getResources().getString(R.string.no_favorites_msg));
} else {
if (favorites.size() == 0) {
showAlert(
getResources().getString(R.string.no_favorites_items),
getResources().getString(R.string.no_favorites_msg));
}
favoriteList = (ListView) view.findViewById(R.id.list_product);
if (favorites != null) {
listAdapter = new ListAdapter(activity, favorites);
favoriteList.setAdapter(listAdapter);
favoriteList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View arg1,int position, long arg3) {
Intent i;
switch (position)
{
case 0:
i = new Intent(getActivity(), Citizen.class);
startActivity(i);
break;
case 1:
i = new Intent(getActivity(), Ntv.class);
startActivity(i);
break;
}
}
});
favoriteList
.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(
AdapterView<?> parent, View view,
int position, long id) {
ImageView button = (ImageView) view
.findViewById(R.id.imgbtn_favorite);
String tag = button.getTag().toString();
if (tag.equalsIgnoreCase("grey")) {
sharedPreference.addFavorite(activity,
favorites.get(position));
Toast.makeText(
activity,
activity.getResources().getString(
R.string.add_favr),
Toast.LENGTH_SHORT).show();
button.setTag("red");
button.setImageResource(R.drawable.star_fill);
} else {
sharedPreference.removeFavorite(activity,
favorites.get(position));
button.setTag("grey");
button.setImageResource(R.drawable.star_blank);
listAdapter.remove(favorites
.get(position));
Toast.makeText(
activity,
activity.getResources().getString(
R.string.remove_favr),
Toast.LENGTH_SHORT).show();
}
return true;
}
});
}
}
return view;
}
public void showAlert(String title, String message) {
if (activity != null && !activity.isFinishing()) {
AlertDialog alertDialog = new AlertDialog.Builder(activity)
.create();
alertDialog.setTitle(title);
alertDialog.setMessage(message);
alertDialog.setCancelable(false);
// setting OK Button
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
// activity.finish();
getFragmentManager().popBackStackImmediate();
}
});
alertDialog.show();
}
}
@Override
public void onResume() {
getActivity().setTitle(R.string.favorites);
getActivity().getActionBar().setTitle(R.string.favorites);
super.onResume();
}
}
列出类
public class ListFragment extends Fragment implements
OnItemClickListener, OnItemLongClickListener {
public static final String ARG_ITEM_ID = "product_list";
Activity activity;
ListView stationListView;
List<Station> stations;
ListAdapter listAdapter;
SharedPreference sharedPreference;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activity = getActivity();
sharedPreference = new SharedPreference();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.fragment_station_list, container,
false);
findViewsById(view);
setStations();
listAdapter = new ListAdapter(activity, stations);
stationListView.setAdapter(listAdapter);
stationListView.setOnItemClickListener(this);
stationListView.setOnItemLongClickListener(this);
return view;
}
private void findViewsById(View view) {
stationListView = (ListView) view.findViewById(R.id.list_product);
}
private void setStations() {
Station station1 = new Station(1, R.drawable.ic_launcher, "Ntv", "Programme",1);
Station station2 = new Station(2, R.drawable.albania_tave, "Ntv", "Programme",2);
Station station3 = new Station(3, R.drawable.albania_tave,"Kiss tv", "Programme",3);
Station station4 = new Station(4, R.drawable.albania_tave, "Ntv", "Programme",4);
Station station5 = new Station(5, R.drawable.ic_launcher, "Ntv", "Citizen",5);
Station station6 = new Station(6, R.drawable.ic_launcher, "Citizen", "Citizen",6);
Station station7 = new Station(7, R.drawable.ic_launcher, "Ntv", "Programme",7);
Station station8 = new Station(8,R.drawable.ic_launcher, "Ntv", "Programme",8);
Station station9 = new Station(9,R.drawable.ic_launcher, "Ntv", "Programme",9);
Station station10 = new Station(10,R.drawable.ic_launcher,"Ntv", "Programme",10);
stations = new ArrayList<Station>();
stations.add(station1);
stations.add(station2);
stations.add(station3);
stations.add(station4);
stations.add(station5);
stations.add(station6);
stations.add(station7);
stations.add(station8);
stations.add(station9);
stations.add(station10);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent i;
switch (position)
{
case 0:
i = new Intent(getActivity(), Citizen.class);
startActivity(i);
break;
case 1:
i = new Intent(getActivity(), Ntv.class);
startActivity(i);
break;
}
}
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View view, int position, long arg3) {
ImageView button = (ImageView) view.findViewById(R.id.imgbtn_favorite);
String tag = button.getTag().toString();
if (tag.equalsIgnoreCase("grey")) {
sharedPreference.addFavorite(activity, stations.get(position));
Toast.makeText(activity,
activity.getResources().getString(R.string.add_favr),
Toast.LENGTH_SHORT).show();
button.setTag("red");
button.setImageResource(R.drawable.star_fill);
} else {
sharedPreference.removeFavorite(activity, stations.get(position));
button.setTag("grey");
button.setImageResource(R.drawable.star_blank);
Toast.makeText(activity,
activity.getResources().getString(R.string.remove_favr),
Toast.LENGTH_SHORT).show();
}
return true;
}
@Override
public void onResume() {
getActivity().setTitle(R.string.app_name);
getActivity().getActionBar().setTitle(R.string.app_name);
super.onResume();
}
}