Es fällt mir schwer zu verstehen, wie man einen Wert von einem Fragment an ein anderes Fragment übergibt. Ich habe einen Umschaltknopf in Recycler-Artikel erstellt, der bei Überprüfung den Inhalt der Karte an ein anderes Fragment (Favoriten) weitergibt, das recyclingVIEW implementiert.Wie Werte vom Recycler übergeben werden Element eines Fragments zu einem anderen Fragment anzeigen
das ist mein recyclerView Adapter
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {
private ClipboardManager myClipboard;
private ClipData myClip;
private Context context;
public List<CardItemModel> cardItems;
public RecyclerAdapter(List<CardItemModel> cardItems){
this.cardItems = cardItems;
}
public static class ViewHolder extends RecyclerView.ViewHolder{
ImageView copyButton;
ImageView shareButton;
ToggleButton favButton;
TextView title;
TextView content;
public ViewHolder(View itemView) {
super(itemView);
this.title = (TextView)itemView.findViewById(R.id.card_title);
this.content = (TextView)itemView.findViewById(R.id.card_content);
this.copyButton= (ImageView) itemView.findViewById(R.id.copyButton);
this.shareButton=(ImageView) itemView.findViewById(R.id.shareButton);
this.favButton=(ToggleButton) itemView.findViewById(R.id.favButton);
favButton.setChecked(false);
favButton.setBackgroundDrawable(ContextCompat.getDrawable(favButton.getContext(), R.mipmap.ic_launcher));
}
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_item,parent,false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
holder.title.setText(cardItems.get(position).title);
holder.content.setText(cardItems.get(position).content);
holder.copyButton.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
myClipboard = (ClipboardManager) v.getContext().getSystemService(Context.CLIPBOARD_SERVICE);
myClip = ClipData.newPlainText("label", holder.content.getText().toString());
myClipboard.setPrimaryClip(myClip);
Toast.makeText(v.getContext(), "Copied to clipboard" , Toast.LENGTH_SHORT).show();
}
});
holder.shareButton.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("text/plain");
share.putExtra(Intent.EXTRA_TEXT, holder.content.getText().toString());
v.getContext().startActivity(Intent.createChooser(share, "Share Text"));
}
});
holder.favButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton favButton, boolean isChecked){
if (isChecked)
favButton.setBackgroundDrawable(ContextCompat.getDrawable(favButton.getContext(),R.mipmap.ic_launcher));
else
favButton.setBackgroundDrawable(ContextCompat.getDrawable(favButton.getContext(), R.mipmap.ic_cart));
}
});
}
@Override
public int getItemCount() {
return cardItems.size();
}
}
und das ist mein 'Favorite' Fragment, wo ich den Wert auf passs wollen.
public class FavouriteFragment extends Fragment {
private List<CardItemModel> cardItems = new ArrayList<>(20);
private MainActivity mainActivity;
private Toolbar toolbar;
private RecyclerView recyclerView;
private RecyclerAdapter recyclerAdapter;
public FavouriteFragment() {
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mainActivity = (MainActivity)activity;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_favourite, container, false);
toolbar = (Toolbar)view.findViewById(R.id.fab_toolbar);
setupToolbar();
recyclerView = (RecyclerView)view.findViewById(R.id.fab_recycler_view);
setupRecyclerView();
return view;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mainActivity.setupNavigationDrawer(toolbar);
}
private void setupToolbar(){
toolbar.setTitle(getString(R.string.fav_fragment_title));
mainActivity.setSupportActionBar(toolbar);
}
private void setupRecyclerView(){
recyclerView.setLayoutManager(new LinearLayoutManager(mainActivity));
recyclerView.setHasFixedSize(true);
initializeCardItemList();
recyclerAdapter = new RecyclerAdapter(cardItems);
recyclerView.setAdapter(recyclerAdapter);
}
private void initializeCardItemList(){
CardItemModel cardItemModel;
String[] cardTitles = getResources().getStringArray(R.array.fav_cards);
String[] cardContents = getResources().getStringArray(R.array.fav_cards_content);
final int length = cardTitles.length;
for(int i=0;i<length;i++){
cardItemModel = new CardItemModel(cardTitles[i],cardContents[i]);
cardItems.add(cardItemModel);
}
}
}