我遇到了几天想解决的问题。 我的RecyclerView中有一个filter方法，该方法通过在edittext中编写某些内容来搜索某些项目。 RecyclerView将在一个对话框中打开，并从活动的两个edittext中填充列表，并在按下按钮后将其添加到其中。
到这里一切正常，但是我添加了一种滑动方法，该方法应该从该recyclerView删除项目，但是如果我打开它并且删除某些项目，即使我搜索某个项目，它也会以一种奇怪的方式工作。项目并删除它一切正常，但是当我搜索某个项目然后删除该项目，然后又删除另一个项目而不进行搜索时，出现问题，所以当我关闭对话框并重新打开它时，通常删除该项目而不进行搜索因为它会返回列表。
这是一个https://www.youtube.com/watch?v=Ycub3db39FQ正在恶化的视频示例，您可以看到我正在搜索5删除它，然后删除6和7，但是当我重新打开它时，6和7仍然在这里。显然，如果我再次删除它们，它们将被删除。
这是我的适配器代码和来自Activity的Dialog方法：
@TargetApi(Build.VERSION_CODES.KITKAT)
public void customAlertItems() {
final Dialog dialog = new Dialog(this);
dialog.setCancelable(false);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.alert_data);
RecyclerView recyclerView = dialog.findViewById(R.id.myRecyclerView);
final EditText edtSearch = dialog.findViewById(R.id.edtSearch);
ImageButton delete = dialog.findViewById(R.id.ivDelete);
ImageButton close = dialog.findViewById(R.id.ivClose);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
final ItemAdapter itemAdapter = new ItemAdapter(itemModel);
recyclerView.setAdapter(itemAdapter);
new ItemTouchHelper(new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {
@Override
public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
return false;
}
@Override
public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
if (direction == ItemTouchHelper.RIGHT || direction == ItemTouchHelper.LEFT) {
model = itemAdapter.getModel();
itemAdapter.removeItem(viewHolder.getAdapterPosition());
edtSearch.getText().clear();
}
}
}).attachToRecyclerView(recyclerView);
edtSearch.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
return true;
}
return false;
}
});
edtSearch.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (edtSearch.getText().toString().isEmpty()) {
if (model != null)
itemModel.remove(model);
}
itemAdapter.getFilter().filter(edtSearch.getText().toString().toLowerCase());
}
@Override
public void afterTextChanged(Editable s) {
}
});
close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dialog.dismiss();
}
});
delete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
}
});
edtSearch.requestFocus();
Objects.requireNonNull(dialog.getWindow()).setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
Objects.requireNonNull(dialog.getWindow()).setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
dialog.show();
}
这是recyclerView适配器
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ExampleViewHolder> implements Filterable {
private ArrayList<ItemModel> variantiConstructors;
private ArrayList<ItemModel> mFilteredList;
private ItemModel itemModel;
ItemAdapter(ArrayList<ItemModel> exampleList) {
variantiConstructors = exampleList;
mFilteredList = variantiConstructors;
}
@NonNull
@Override
public ItemAdapter.ExampleViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recycler, parent, false);
RecyclerView.LayoutParams lp = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
v.setLayoutParams(lp);
return new ItemAdapter.ExampleViewHolder(v);
}
@Override
public void onBindViewHolder(@NonNull final ExampleViewHolder holder, @SuppressLint("RecyclerView") final int position) {
ItemModel item = variantiConstructors.get(position);
holder.desc.setText(item.getCodiceArticolo());
holder.qta.setText(item.getQta());
itemModel = item;
if (position % 2 == 0) {
holder.itemView.setBackgroundColor(Color.parseColor("#5C5C5C"));
} else if (position % 2 == 1) {
holder.itemView.setBackgroundColor(Color.parseColor("#9E9E9E"));
}
}
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
final FilterResults oReturn = new FilterResults();
final ArrayList<ItemModel> results = new ArrayList<>();
if (mFilteredList == null)
mFilteredList = new ArrayList<>(variantiConstructors);
if (constraint != null && constraint.length() > 0) {
if (mFilteredList != null && mFilteredList.size() > 0) {
for (final ItemModel cd : mFilteredList) {
if (cd.getCodiceArticolo().toLowerCase()
.contains(constraint.toString().toLowerCase()))
results.add(cd);
}
}
oReturn.values = results;
oReturn.count = results.size(); //newly Aded by ZA
} else {
oReturn.values = mFilteredList;
oReturn.count = mFilteredList.size(); //newly added by ZA
}
return oReturn;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(final CharSequence constraint,
FilterResults results) {
variantiConstructors = new ArrayList<>((ArrayList<ItemModel>) results.values);
notifyDataSetChanged();
}
};
}
@Override
public int getItemCount() {
return variantiConstructors.size();
}
public class ExampleViewHolder extends RecyclerView.ViewHolder {
public TextView desc;
public TextView qta;
ExampleViewHolder(View itemView) {
super(itemView);
desc = itemView.findViewById(R.id.Desc);
qta = itemView.findViewById(R.id.Qta);
}
}
ItemModel getModel() {
return itemModel;
}
public ArrayList<ItemModel> getList() {
return variantiConstructors;
}
void removeItem(int position) {
variantiConstructors.remove(position);
notifyDataSetChanged();
}
}
这是我添加项目时单击按钮的方法：
conferma.setOnClickListener(new View.OnClickListener() {
@TargetApi(Build.VERSION_CODES.KITKAT)
@Override
public void onClick(View view) {
if(qta.getText().length() > 4 ){
MediaPlayer mpFound = MediaPlayer.create(InventarioActivity.this,R.raw.errorsound);
mpFound.start();
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
Objects.requireNonNull(v).vibrate(1000);
new GlideToast.makeToast(InventarioActivity.this, "QUANTITA' NON VALIDA", GlideToast.LENGTHLONG, GlideToast.FAILTOAST).show();
qta.clearFocus();
} else
if (!code.getText().toString().equals("")) {
if(TextUtils.isDigitsOnly(code.getText())) {
if (code.getText().length() >= 1 && code.getText().length() <= 999999) {
if (!qta.getText().toString().equals("")) {
lastQta.setText(qta.getText().toString());
lastCode.setText(code.getText().toString());
itemModel.add(new ItemModel(code.getText().toString(), qta.getText().toString()));
} else {
qta.setText("1");
lastQta.setText(qta.getText().toString());
lastCode.setText(code.getText().toString());
itemModel.add(new ItemModel(code.getText().toString(), qta.getText().toString()));
}
} else if (code.getText().length() == 8) {
// check digit
} else if (code.getText().length() == 11) {
// check digit
} else if (code.getText().length() == 13) {
// check digit
}
}
code.setText("");
qta.setText("");
code.requestFocus();
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
Objects.requireNonNull(imm).showSoftInput(code, InputMethodManager.SHOW_IMPLICIT);
}
}
});
答案 0 :(得分：1)
尝试此操作在代码中进行以下更改，它将对您有用
InventarioActivity
public class InventarioActivity extends AppCompatActivity {
ImageButton back;
ImageButton send;
ImageButton itemList;
EditText code;
EditText qta;
TextView lastCode;
TextView lastQta;
Button conferma;
ArrayList<ItemModel> itemModel;
RecyclerView recyclerView;
ItemAdapter itemAdapter;
ItemModel model;
SharedPreferences sharedPreferences;
String siteFTP;
String usrFTP;
String pswFTP;
String path;
String RemotesiteFTP;
String RemoteusrFTP;
String RemotepswFTP;
String Remotepath;
String qt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_inventario);
back = findViewById(R.id.backButton);
send = findViewById(R.id.sendBtn);
itemList = findViewById(R.id.itemList);
code = findViewById(R.id.barcodeTxt);
qta = findViewById(R.id.qtaTxt);
lastCode = findViewById(R.id.lastBarCode);
lastQta = findViewById(R.id.lastQta);
conferma = findViewById(R.id.btnConferma);
itemModel = new ArrayList<>();
sharedPreferences = getSharedPreferences("settings", MODE_PRIVATE);
siteFTP = sharedPreferences.getString("siteLocal", "");
usrFTP = sharedPreferences.getString("userLocal", "");
pswFTP = sharedPreferences.getString("pswLocal", "");
path = sharedPreferences.getString("localInventario", "/gpv/myfile.asc");
RemotesiteFTP = sharedPreferences.getString("siteRemote", "");
RemoteusrFTP = sharedPreferences.getString("userRemote", "");
RemotepswFTP = sharedPreferences.getString("pswRemote", "");
Remotepath = sharedPreferences.getString("remoteInventario", "");
btnConferma();
ItemList();
onCodeChange();
// sendFtp();
qtaControll();
}
public void qtaControll() {
qta.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@TargetApi(Build.VERSION_CODES.KITKAT)
@Override
public void onFocusChange(View view, boolean hasFocus) {
if (!hasFocus) {
if (qta.getText().length() > 4) {
if (!code.getText().toString().equals("")) {
lastQta.setText("1");
lastCode.setText(code.getText().toString());
itemModel.add(new ItemModel(code.getText().toString(), "1"));
}
code.setText(qta.getText());
qta.setText("");
}
if (!code.getText().toString().equals("")) {
if (TextUtils.isDigitsOnly(code.getText())) {
if (code.getText().length() >= 1 && code.getText().length() <= 999999) {
lastQta.setText(qt);
lastCode.setText(code.getText().toString());
itemModel.add(new ItemModel(code.getText().toString(), qt));
}
} else if (code.getText().length() == 8) {
// check digit
} else if (code.getText().length() == 11) {
// check digit
} else if (code.getText().length() == 13) {
// check digit
}
}
}
}
});
code.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View view, boolean b) {
if (!b) {
if (qta.getText().toString().equals("")) {
qt = "1";
} else {
qt = qta.getText().toString();
if (!code.getText().toString().equals("")) {
if (TextUtils.isDigitsOnly(code.getText())) {
if (code.getText().length() >= 1 && code.getText().length() <= 999999) {
lastQta.setText(qt);
lastCode.setText(code.getText().toString());
itemModel.add(new ItemModel(code.getText().toString(), qt));
}
} else if (code.getText().length() == 8) {
// check digit
} else if (code.getText().length() == 11) {
// check digit
} else if (code.getText().length() == 13) {
// check digit
}
}
}
}
}
});
}
public void onCodeChange() {
code.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
qta.requestFocus();
return true;
}
return false;
}
});
}
public void ItemList() {
itemList.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
customAlertItems();
}
});
}
public void btnConferma() {
conferma.setOnClickListener(new View.OnClickListener() {
@TargetApi(Build.VERSION_CODES.KITKAT)
@Override
public void onClick(View view) {
if (qta.getText().length() > 4) {
// MediaPlayer mpFound = MediaPlayer.create(InventarioActivity.this,R.raw.errorsound);
// mpFound.start();
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
Objects.requireNonNull(v).vibrate(1000);
Toast.makeText(InventarioActivity.this, "QUANTITA' NON VALIDA", Toast.LENGTH_SHORT).show();
qta.clearFocus();
} else if (!code.getText().toString().equals("")) {
if (TextUtils.isDigitsOnly(code.getText())) {
if (code.getText().length() >= 1 && code.getText().length() <= 999999) {
if (!qta.getText().toString().equals("")) {
lastQta.setText(qta.getText().toString());
lastCode.setText(code.getText().toString());
itemModel.add(new ItemModel(code.getText().toString(), qta.getText().toString()));
} else {
qta.setText("1");
lastQta.setText(qta.getText().toString());
lastCode.setText(code.getText().toString());
itemModel.add(new ItemModel(code.getText().toString(), qta.getText().toString()));
}
} else if (code.getText().length() == 8) {
// check digit
} else if (code.getText().length() == 11) {
// check digit
} else if (code.getText().length() == 13) {
// check digit
}
}
code.setText("");
qta.setText("");
code.requestFocus();
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
Objects.requireNonNull(imm).showSoftInput(code, InputMethodManager.SHOW_IMPLICIT);
}
}
});
}
public void customAlertItems() {
final Dialog dialog = new Dialog(this);
dialog.setCancelable(false);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.alert_data);
recyclerView = dialog.findViewById(R.id.myRecyclerView);
final EditText edtSearch = dialog.findViewById(R.id.edtSearch);
ImageButton delete = dialog.findViewById(R.id.ivDelete);
ImageButton close = dialog.findViewById(R.id.ivClose);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
itemAdapter = new ItemAdapter(this, itemModel);
recyclerView.setAdapter(itemAdapter);
new ItemTouchHelper(new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {
@Override
public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
return false;
}
@Override
public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
if (direction == ItemTouchHelper.RIGHT || direction == ItemTouchHelper.LEFT) {
model = itemAdapter.getModel(viewHolder.getAdapterPosition());
Log.e("DATA_VALUE",model.getCodiceArticolo());
itemModel.remove(model);
itemAdapter.notifyDataSetChanged();
edtSearch.getText().clear();
}
}
}).attachToRecyclerView(recyclerView);
edtSearch.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
itemAdapter.getFilter().filter(edtSearch.getText().toString().toLowerCase());
}
@Override
public void afterTextChanged(Editable s) {
if (TextUtils.isEmpty(edtSearch.getText().toString())) {
itemAdapter = new ItemAdapter(InventarioActivity.this, itemModel);
recyclerView.setAdapter(itemAdapter);
}
}
});
close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (itemAdapter.getItemCount() == 0) {
itemModel.clear();
} else {
// itemModel = itemAdapter.getList();
}
dialog.dismiss();
}
});
delete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
}
});
edtSearch.requestFocus();
Objects.requireNonNull(dialog.getWindow()).setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
Objects.requireNonNull(dialog.getWindow()).setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
dialog.show();
}
}
ItemAdapter
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ExampleViewHolder> implements Filterable {
private ArrayList<ItemModel> variantiConstructors;
private ArrayList<ItemModel> mFilteredList;
private ItemModel itemModel;
private Context mContext;
ItemAdapter(Context context, ArrayList<ItemModel> exampleList) {
variantiConstructors = exampleList;
mFilteredList = variantiConstructors;
mContext = context;
}
@NonNull
@Override
public ItemAdapter.ExampleViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recycler, parent, false);
RecyclerView.LayoutParams lp = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
v.setLayoutParams(lp);
return new ItemAdapter.ExampleViewHolder(v);
}
@Override
public void onBindViewHolder(@NonNull final ExampleViewHolder holder, @SuppressLint("RecyclerView") final int position) {
ItemModel item = variantiConstructors.get(position);
holder.desc.setText(item.getCodiceArticolo());
holder.qta.setText(item.getQta());
if (position % 2 == 0) {
holder.itemView.setBackgroundColor(Color.parseColor("#5C5C5C"));
} else if (position % 2 == 1) {
holder.itemView.setBackgroundColor(Color.parseColor("#9E9E9E"));
}
}
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
final FilterResults oReturn = new FilterResults();
final ArrayList<ItemModel> results = new ArrayList<>();
if (mFilteredList == null)
mFilteredList = new ArrayList<>(variantiConstructors);
if (constraint != null && constraint.length() > 0) {
if (mFilteredList != null && mFilteredList.size() > 0) {
for (final ItemModel cd : mFilteredList) {
if (cd.getCodiceArticolo().toLowerCase()
.contains(constraint.toString().toLowerCase()))
results.add(cd);
}
}
oReturn.values = results;
oReturn.count = results.size(); //newly Aded by ZA
} else {
oReturn.values = mFilteredList;
oReturn.count = mFilteredList.size(); //newly added by ZA
}
return oReturn;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(final CharSequence constraint,
FilterResults results) {
variantiConstructors = new ArrayList<>((ArrayList<ItemModel>) results.values);
notifyDataSetChanged();
}
};
}
@Override
public int getItemCount() {
return variantiConstructors.size();
}
public class ExampleViewHolder extends RecyclerView.ViewHolder {
public TextView desc;
public TextView qta;
ExampleViewHolder(View itemView) {
super(itemView);
desc = itemView.findViewById(R.id.Desc);
qta = itemView.findViewById(R.id.Qta);
}
}
ItemModel getModel(int pos) {
return variantiConstructors.get(pos);
}
public ArrayList<ItemModel> getList() {
return variantiConstructors;
}
}