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[英]How to scroll to and focus an EditText inside a view in RecyclerView?
[英]Getting focus of EditText inside RecyclerView
我正在实现一个应用程序,用户可以在其中存储借记卡,以后他们只需输入同一张卡的CVV号即可使用它。 我已经将RecyclerView用于用户存储的所有物品(借记卡)。 一切正常,视图呈现良好,我使用LinearLayoutManager来显示水平滚动。
现在我面临的问题是,每当我尝试输入任何卡的CVV时,只要单击它,视图就会移到“已存储卡”列表的最后一项,因此,如果我有三张卡存储在我的卡中列表,我尝试为第一个输入CVV,视图直接转移到第三张卡,但是焦点仍然停留在第一张卡的EditText上。 我不知道这是怎么回事。 我要共享一些代码部分。
设置适配器并定义水平滚动:
recyclerAdapter = new RecyclerStoredCardAdapter(mContext, storedCards);
LinearLayoutManager layoutManager
= new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
storedCardListRecycler.setLayoutManager(layoutManager);
storedCardListRecycler.setVisibility(View.VISIBLE);
storedCardListRecycler.setAdapter(recyclerAdapter);
与之共享屏幕截图,这样会很清晰。 任何帮助将是可观的。 谢谢。
我这样做是使用ListView
而不是RecyclerView
但是您也可以使用RecyclerView
。
这是我用过的课堂演示。
SettingItemListViewAdapter.java
/**
* Created by vishalchhodwani on 18/10/16.
*/
public class SettingItemListViewAdapter extends BaseAdapter {
private final String TAG = "SettingItemListViewAdapter";
Context context;
List<SettingListViewItem> settingItemList;
OnMyClickListeners onMyClickListeners;
MyDatabaseAdapter myDatabaseAdapter;
public SettingItemListViewAdapter(Context context, List<SettingListViewItem> settingItemList) {
this.context = context;
this.settingItemList = settingItemList;
myDatabaseAdapter = new MyDatabaseAdapter(context);
}
public void setMyClickListener(OnMyClickListeners onMyClickListeners) {
this.onMyClickListeners = onMyClickListeners;
}
@Override
public int getCount() {
return settingItemList.size();
}
@Override
public Object getItem(int position) {
return settingItemList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.setting_listview_item, parent, false);
holder.settingListViewForm = (RelativeLayout) convertView.findViewById(R.id.settingListViewItem_form1);
holder.vrijeTekst = (EditText) convertView.findViewById(R.id.settingListViewItem_ed_virje_row1);
holder.kenteken = (EditText) convertView.findViewById(R.id.settingListViewItem_ed_kenketen_row1);
holder.checkRow = (ImageView) convertView.findViewById(R.id.settingListViewItem_check_row1);
holder.deleteRow = (ImageView) convertView.findViewById(R.id.settingListViewItem_deleteRow);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.vrijeTekst.setText(settingItemList.get(position).getItemVrijeTekst());
holder.kenteken.setText(settingItemList.get(position).getItemKenteken());
boolean isSelected = settingItemList.get(position).isItemSelected();
holder.checkRow.setImageResource(isSelected ? R.drawable.checked : R.drawable.uncheked);
holder.vrijeTekst.setTag(position);
holder.vrijeTekst.setOnFocusChangeListener(new View.OnFocusChangeListener() {
public void onFocusChange(final View v, boolean hasFocus) {
try {
if (!hasFocus) {
if (settingItemList.size() > 0) {
int position = (int) v.getTag();
EditText Caption = (EditText) v;
settingItemList.get(position).setItemVrijeTekst(Caption.getText().toString());
}
} else {
EditText caption = (EditText) v;
caption.setCursorVisible(true);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
holder.kenteken.setTag(position);
holder.kenteken.setOnFocusChangeListener(new View.OnFocusChangeListener() {
public void onFocusChange(final View v, boolean hasFocus) {
try {
if (!hasFocus) {
if (settingItemList.size() > 0) {
int position = (int) v.getTag();
EditText Caption = (EditText) v;
settingItemList.get(position).setItemKenteken(Caption.getText().toString());
}
} else {
EditText caption = (EditText) v;
caption.setCursorVisible(true);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
holder.checkRow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (myDatabaseAdapter.isAvailableInTable(settingItemList.get(position).getItemId()))
onMyClickListeners.onSelectButtonClicked(position);
}
});
holder.deleteRow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onMyClickListeners.onDeleteItemButtonClicked(position);
}
});
if (getCount() == position + 1) {
holder.vrijeTekst.requestFocus();
holder.vrijeTekst.performClick();
}
return convertView;
}
public static class ViewHolder {
RelativeLayout settingListViewForm;
EditText vrijeTekst, kenteken;
ImageView checkRow, deleteRow;
}
}
SettingN_New.java (是一个片段)
public class SettingN_New extends Fragment implements OnClickListener, OnMyClickListeners {
private final String TAG = "SettingN_New";
Context context;
private TextView tv_demo;
ToggleButton togglebtn_save;
Button btn_save, btn_add;
ListView settingItemListView;
List<SettingListViewItem> settingItemList;
SettingItemListViewAdapter settingItemListViewAdapter;
MyDatabaseAdapter myDatabaseAdapter;
TinyDB loginpref;
boolean isNewRowAdded = true;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
//This line of code will stay focus on selected edittext in list
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST);
ActionBar bar = getActivity().getActionBar();
bar.show();
View rootView = inflater.inflate(R.layout.setting_new, container, false);
initializeViews(rootView);
setUI();
getListOfItems();
return rootView;
}
private void setUI() {
try {
if (loginpref.getBoolean(ConstantLib.PREF_AUTO_LOGIN)) {
togglebtn_save.setChecked(true);
} else {
togglebtn_save.setChecked(false);
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
private void initializeViews(View rootView) {
context = getActivity();
LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View headerView = inflater.inflate(R.layout.setting_listview_header, null);
btn_save = (Button) headerView.findViewById(R.id.btn_save);
btn_add = (Button) headerView.findViewById(R.id.btn_add);
togglebtn_save = (ToggleButton) headerView.findViewById(R.id.togglebtn_save);
tv_demo = (TextView) headerView.findViewById(R.id.tv_demo);
settingItemList = new ArrayList<>();
settingItemListView = (ListView) rootView.findViewById(R.id.setting_listView);
settingItemListView.setClickable(true);
settingItemListView.refreshDrawableState();
settingItemListView.addHeaderView(headerView);
settingItemListView.setItemsCanFocus(true);
settingItemListViewAdapter = new SettingItemListViewAdapter(context, settingItemList);
settingItemListViewAdapter.setMyClickListener(this);
settingItemListView.setAdapter(settingItemListViewAdapter);
myDatabaseAdapter = new MyDatabaseAdapter(context);
loginpref = new TinyDB(getActivity());
btn_save.setOnClickListener(this);
btn_add.setOnClickListener(this);
tv_demo.setOnClickListener(this);
togglebtn_save.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
loginpref.putBoolean(ConstantLib.PREF_AUTO_LOGIN, isChecked);
}
});
}
private void getListOfItems() {
settingItemList.clear();
settingItemList.addAll(myDatabaseAdapter.getAllData());
if (settingItemList.size() == 0) {
isNewRowAdded = true;
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId(settingItemList.size() + "");
settingListViewItem.setItemVrijeTekst("");
settingListViewItem.setItemKenteken("");
settingListViewItem.setItemSelected(false);
settingItemList.add(settingListViewItem);
} else {
isNewRowAdded = false;
}
notifyDataSetChanged();
}
private void hideKeyboard() {
// Check if no view has focus:
View view = getActivity().getCurrentFocus();
if (view != null) {
InputMethodManager inputManager = (InputMethodManager) getActivity()
.getSystemService(Context.INPUT_METHOD_SERVICE);
inputManager.hideSoftInputFromWindow(view.getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_save:
clearFocus();
hideKeyboard();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
if (isValidationSuccess())
saveAllData();
}
}, 200);
break;
case R.id.btn_add:
addAnotherRow();
break;
case R.id.tv_demo:
clickedOnTvDemo();
break;
}
}
private void clickedOnTvDemo() {
try {
Intent i = new Intent(getActivity(), Setting_exp_activity.class);
startActivity(i);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
private boolean isValidationSuccess() {
Log.e(TAG, "isValidationSuccess() called : settingItemList.size()==" + settingItemList.size());
for (int i = 0; i < settingItemList.size(); i++) {
if (settingItemList.get(i).getItemVrijeTekst().equalsIgnoreCase("") || settingItemList.get(i).getItemKenteken().equalsIgnoreCase("")) {
showToast("Veld mag niet leeg zijn");// showToast("Fields should not be empty!!");
return false;
}
}
return true;
}
private void saveAllData() {
Log.e(TAG, "saveAllData() called");
myDatabaseAdapter.clearTable();
for (int i = 0; i < settingItemList.size(); i++) {
isNewRowAdded = false;
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId(i + "");
settingListViewItem.setItemVrijeTekst(settingItemList.get(i).getItemVrijeTekst());
settingListViewItem.setItemKenteken(settingItemList.get(i).getItemKenteken());
settingListViewItem.setItemSelected(settingItemList.get(i).isItemSelected());
myDatabaseAdapter.insertDataToTable(settingListViewItem);
}
DialogUtils.showInfoDialog(getActivity(),
"Instellingen opgeslagen");
}
private void addAnotherRow() {
Log.e(TAG, "addAnotherRow() called");
if (settingItemList.size() > 0 && !isNewRowAdded) {
if (!settingItemList.get(settingItemList.size() - 1).getItemVrijeTekst().equalsIgnoreCase("") && !settingItemList.get(settingItemList.size() - 1).getItemKenteken().equalsIgnoreCase("")) {
isNewRowAdded = true;
Log.e(TAG, "addAnotherRow() called check 1");
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId(settingItemList.size() + "");
settingListViewItem.setItemVrijeTekst("");
settingListViewItem.setItemKenteken("");
settingListViewItem.setItemSelected(false);
settingItemList.add(settingListViewItem);
notifyDataSetChanged();
} else {
Log.e(TAG, "addAnotherRow() called check 2");
showToast("Al toegevoegd");// showToast("Already Added!!");
}
} else {
if (!isNewRowAdded) {
isNewRowAdded = true;
Log.e(TAG, "addAnotherRow() called check 3");
SettingListViewItem settingListViewItem = new SettingListViewItem();
settingListViewItem.setItemId("0");
settingListViewItem.setItemVrijeTekst("");
settingListViewItem.setItemKenteken("");
settingListViewItem.setItemSelected(false);
settingItemList.add(settingListViewItem);
notifyDataSetChanged();
} else {
Log.e(TAG, "addAnotherRow() called check 4");
showToast("Al toegevoegd");// showToast("Already Added!!");
}
}
settingItemListView.setSelection(settingItemList.size());
Log.e(TAG, "addAnotherRow() called check 5");
Log.e(TAG, "after settingItemList.size()==" + settingItemList.size());
}
@Override
public void onDeleteItemButtonClicked(int position) {
Log.e(TAG, "onDeleteItemButtonClicked() position==" + position);
if (myDatabaseAdapter.getAllData().size() > 0)
showAlertForDeleteItem(position);
else
showToast("Er is geen item te verwijderen"); // showToast("No item to Delete");
}
@Override
public void onSelectButtonClicked(int position) {
Log.e(TAG, "onSelectButtonClicked() position==" + position);
for (int i = 0; i < settingItemList.size(); i++) {
Log.e(TAG, "onSelectButtonClicked() called check 3");
settingItemList.get(i).setItemSelected(false);
}
settingItemList.get(position).setItemSelected(true);
notifyDataSetChanged();
}
private void showAlertForDeleteItem(final int position) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
alertDialog.setMessage("Weet je zeker dat je dit item wilt wissen?");//alertDialog.setMessage("Are you sure you want to delete this item?");
// ja==yes
alertDialog.setPositiveButton("Ja", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
myDatabaseAdapter.deleteTableRow(settingItemList.get(position).getItemId() + "");
settingItemList.remove(position);
settingItemListViewAdapter.notifyDataSetChanged();
if (settingItemList.size() == position + 1) {
isNewRowAdded = false;
}
if (settingItemList.size() == 0) {
isNewRowAdded = false;
addAnotherRow();
}
}
});
//Annuleer==cancel
alertDialog.setNegativeButton("Annuleer", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
alertDialog.show();
}
private void notifyDataSetChanged() {
settingItemListViewAdapter.notifyDataSetChanged();
}
private void showToast(String message) {
Toast.makeText(context, message, Toast.LENGTH_LONG).show();
}
public void clearFocus() {
if (getActivity().getWindow().getCurrentFocus() != null) {
getActivity().getWindow().getCurrentFocus().clearFocus();
}
}
}
我正在全班给你。 为什么? 因为它将使您更加了解我如何将其与ListView
。
测试一下,让我知道。 :)
getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST);
无法重现此问题。 让我知道以下代码是否可以解决您的问题。 如果没有,如果您共享适配器的代码,则可以提供更多反馈。
MainActivity.java
public class MainActivity
extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
MyAdapter adapter = new MyAdapter();
recyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
recyclerView.setAdapter(adapter);
}
}
public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_ite, parent);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((EditText)((MyViewHolder)holder).mBinding.findViewById(R.id.editText)).setHint(position + " ");
}
@Override
public int getItemCount() {
return 100;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
View mBinding;
public MyViewHolder(View binding) {
super(binding);
this.mBinding = binding;
}
}
}
2xml布局:
<EditText
android:id="@+id/editText"
android:layout_height="200dp"
android:layout_width="300dp"/>
</android.support.v7.widget.CardView>
我的main_activity.xml如下:
<RelativeLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_height="wrap_content"
android:layout_width="match_parent"/>
</RelativeLayout>
如您所见,这是最简单的情况。 让我知道我是否错过任何事情。
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