我无法找到此活动中的错误。我是android的新手。请问任何人都可以更正java和xml中的错误吗？我有一个微调器，Datepicker和列表视图。微调器将显示三个项目。一切正常.Te问题是每当我搜索任何项目并点击它时，它将打开列表的第一项。请告诉我你是否还需要其他任何东西来解决这个问题。
我的活动
public class previous extends AppCompatActivity {
static TextView startDate,endDate;
static int DATES=123;
CustomAdapter adapter, Padapter, Eadapter;
ArrayList<AsyncTask> asyncTasks = new ArrayList<>();
ListView customersList;
Spinner listOptions;
final static String ALL = "All", PAYMENTS = "Payments", EXPENSES = "Expenses";
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_customers);
startDate=(TextView)findViewById(R.id.start_date);
endDate=(TextView)findViewById(R.id.end_date);
customersList = (ListView) findViewById(R.id.customers_list);
// getCustomers(DATES);
//Spinner
List<String> options = new ArrayList<String>();
options.add(ALL);
options.add(PAYMENTS);
options.add(EXPENSES);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, R.layout.item_spinner_white, options);
dataAdapter.setDropDownViewResource(R.layout.item_spinner);
listOptions = (Spinner) findViewById(R.id.spinner);
listOptions.setAdapter(dataAdapter);
listOptions.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
switch (listOptions.getSelectedItem().toString()) {
case ALL:
searchView.setQuery("", true);
customersList.setAdapter(adapter);
break;
case PAYMENTS:
searchView.setQuery("", true);
customersList.setAdapter(Padapter);
break;
case EXPENSES:
searchView.setQuery("", true);
customersList.setAdapter(Eadapter);
break;
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
listOptions.setVisibility(View.INVISIBLE);
}
public void getDates(View view){
final TextView requiredDate=(TextView)view;
final String oldText=requiredDate.getText().toString();
final Calendar today = Calendar.getInstance();
final Calendar selectedDate=Calendar.getInstance();
DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
selectedDate.set(Calendar.YEAR, year);
selectedDate.set(Calendar.MONTH, monthOfYear);
selectedDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
//Setting display text-------
SimpleDateFormat formatted = new SimpleDateFormat("dd-MMM-yyyy", Locale.US);
requiredDate.setText(formatted.format(selectedDate.getTime()));
//Validation--------------
if(!startDate.getText().toString().equals(getResources().getString(R.string.start_date))
&&!endDate.getText().toString().equals(getResources().getString(R.string.end_date))){
try {
Date sDate=formatted.parse(startDate.getText().toString());
Date eDate=formatted.parse(endDate.getText().toString());
if(sDate.after(eDate)){
Common.toastMessage(previous.this,R.string.give_valid);
requiredDate.setText(oldText);
return;
}
} catch (ParseException e) {
requiredDate.setText(oldText);
return;
}
getCustomers(DATES);
}
}
};
new DatePickerDialog(previous.this, dateSetListener, today.get(Calendar.YEAR), today.get(Calendar.MONTH), today.get(Calendar.DAY_OF_MONTH))
.show();
}
void getCustomers(int DATES) {
final Common common = new Common();
final String webService = "/API/Approver/GetPreviousApprovalsInfo";
final String postData = "{\"FromDate\":\"" + startDate.getText().toString() + "\",\"ToDate\":\"" + endDate.getText().toString() + "\"}";
final AVLoadingIndicatorView loadingIndicator = (AVLoadingIndicatorView) findViewById(R.id.loading_indicator);
final String[] dataColumns = {};
final Runnable postThread = new Runnable() {
@Override
public void run() {
try {
final JSONArray invoices = new JSONArray(common.json);
if (invoices.length() == 0) {
(findViewById(R.id.no_items)).setVisibility(View.VISIBLE);
return;
}
final ArrayList<String[]> invoiceListData = new ArrayList<>();
for (int i = 0; i < invoices.length(); i++) {
JSONObject jsonObject1 = invoices.getJSONObject(i);
String[] data = new String[9];
data[0] = jsonObject1.getString("ID");
data[1] = jsonObject1.getString("EntryNo");
data[2] = jsonObject1.getString("Company");
data[3] = jsonObject1.getString("Date");
data[4] = jsonObject1.getString("PaymentMode");
data[5] = jsonObject1.getString("Amount");
data[6] = jsonObject1.getString("Type");
data[7] = jsonObject1.getString("ApprovalDate");
data[8] = jsonObject1.getString("GeneralNotes");
invoiceListData.add(data);
}
adapter = new CustomAdapter(previous.this, invoiceListData, Common.PREVIOUSPAYMENTS);
customersList.setAdapter(adapter);
listOptions.setVisibility(View.VISIBLE);
final ArrayList<String[]> PaymentListData = new ArrayList<>();
final ArrayList<String[]> ExpenseListData = new ArrayList<>();
for (int i = 0; i < invoiceListData.size(); i++) {
if (invoiceListData.get(i)[6].equals("Payment")) {
PaymentListData.add(invoiceListData.get(i));
} else if (invoiceListData.get(i)[6].equals("Expense")) {
ExpenseListData.add(invoiceListData.get(i));
}
}
Padapter = new CustomAdapter(previous.this, PaymentListData, Common.PREVIOUSPAYMENTS);//Global variable
customersList.setAdapter(Padapter);
listOptions.setVisibility(View.VISIBLE);
Eadapter = new CustomAdapter(previous.this, ExpenseListData, Common.PREVIOUSPAYMENTS);
customersList.setAdapter(adapter);
listOptions.setVisibility(View.VISIBLE);
customersList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (customersList.getAdapter() == adapter) {
switch (invoiceListData.get(position)[6]){
case "Payment":
Intent approvalDetailsIntent1 = new Intent(previous.this,PpaymentDetails.class);
approvalDetailsIntent1.putExtra(Common.APPROVALID,invoiceListData.get(position)[0]);
approvalDetailsIntent1.putExtra(Common.ENTRYNO, invoiceListData.get(position)[1]);
approvalDetailsIntent1.putExtra(Common.PAYMENT_MODE, invoiceListData.get(position)[4]);
approvalDetailsIntent1.putExtra(Common.PAYMENT_DATE, invoiceListData.get(position)[3]);
approvalDetailsIntent1.putExtra(Common.AMOUNT, invoiceListData.get(position)[5]);
approvalDetailsIntent1.putExtra(Common.COMPANY_DETAILS, invoiceListData.get(position)[2]);
approvalDetailsIntent1.putExtra(Common.GENERAL_NOTES, invoiceListData.get(position)[8]);
approvalDetailsIntent1.putExtra(Common.PAYMENT_TYPE, invoiceListData.get(position)[6]);
startActivity(approvalDetailsIntent1);
break;
case "Expense":
Intent approvalDetailsIntent2 = new Intent(previous.this, PexpenseDetail.class);
approvalDetailsIntent2.putExtra(Common.APPROVALID, invoiceListData.get(position)[0]);
approvalDetailsIntent2.putExtra(Common.REFNO, invoiceListData.get(position)[1]);
startActivity(approvalDetailsIntent2);
break;
}
// Common.toastMessage(getContext(), "scene aan");
}
else if (customersList.getAdapter() == Padapter) {
Intent approvalDetailsIntent1 = new Intent(previous.this,PpaymentDetails.class);
approvalDetailsIntent1.putExtra(Common.APPROVALID, PaymentListData.get(position)[0]);
approvalDetailsIntent1.putExtra(Common.ENTRYNO, PaymentListData.get(position)[1]);
approvalDetailsIntent1.putExtra(Common.PAYMENT_MODE, PaymentListData.get(position)[4]);
approvalDetailsIntent1.putExtra(Common.PAYMENT_DATE, PaymentListData.get(position)[3]);
approvalDetailsIntent1.putExtra(Common.AMOUNT, PaymentListData.get(position)[5]);
approvalDetailsIntent1.putExtra(Common.COMPANY_DETAILS, PaymentListData.get(position)[2]);
approvalDetailsIntent1.putExtra(Common.GENERAL_NOTES, PaymentListData.get(position)[8]);
approvalDetailsIntent1.putExtra(Common.PAYMENT_TYPE, PaymentListData.get(position)[6]);
startActivity(approvalDetailsIntent1);
}
else if (customersList.getAdapter() == Eadapter) {
Intent approvalDetailsIntent2 = new Intent(previous.this, PexpenseDetail.class);
approvalDetailsIntent2.putExtra(Common.APPROVALID, ExpenseListData.get(position)[0]);
approvalDetailsIntent2.putExtra(Common.REFNO, ExpenseListData.get(position)[1]);
startActivity(approvalDetailsIntent2);
}
}
});
} catch (JSONException e) {
e.printStackTrace();
}
}
};
Runnable postThreadFailed = new Runnable() {
@Override
public void run() {
Common.toastMessage(previous.this, R.string.failed_server);
}
};
common.AsynchronousThread(previous.this,
webService,
postData,
loadingIndicator,
dataColumns,
postThread,
postThreadFailed);
asyncTasks.add(common.asyncTask);
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
}
SearchView searchView;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_home_search, menu);
//Searching-------------------
searchView=(SearchView) menu.findItem(R.id.menu_search).getActionView();
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
if(customersList.getAdapter()!=null){//for searching
((CustomAdapter)customersList.getAdapter()).getFilter(Arrays.asList(1)).filter(searchView.getQuery().toString().trim());
}
return false;
}
});
searchView.setOnCloseListener(new SearchView.OnCloseListener() {
@Override
public boolean onClose() {
return false;
}
});
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.menu_home) {
Intent intent=new Intent(this,HomeScreen.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onBackPressed() {
for(int i=0;i<asyncTasks.size();i++){
asyncTasks.get(i).cancel(true);
}
super.onBackPressed();
}
}
我的xml
<RelativeLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.tech.thrithvam.spaccounts.Customers"
android:background="@drawable/primary_gradient">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="end"
android:gravity="end"
android:animateLayoutChanges="true"
android:id="@+id/dates_layout"
android:paddingLeft="5dp"
android:paddingRight="5dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/start_date"
android:textSize="14sp"
android:padding="5dp"
android:textColor="@color/colorAccent"
android:onClick="getDates"
android:id="@+id/start_date"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/to"
android:textSize="14sp"
android:padding="5dp"
android:textColor="@color/primary_text"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/end_date"
android:textSize="14sp"
android:padding="5dp"
android:textColor="@color/colorAccent"
android:onClick="getDates"
android:id="@+id/end_date"/>
</LinearLayout>
<Spinner
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/spinner"
android:layout_gravity="end"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
/>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/customers_list"
android:layout_below="@id/spinner"
android:divider="@null"
android:paddingTop="3dp"
android:scrollbars="none"/>
<com.wang.avi.AVLoadingIndicatorView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:indicatorName="BallScaleMultipleIndicator"
android:layout_gravity="center"
app:indicatorColor="@android:color/white"
android:id="@+id/loading_indicator"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
/>
</RelativeLayout>
CUSTOM ADAPTER
public class CustomAdapter extends BaseAdapter {
private Context adapterContext;
public static LayoutInflater inflater=null;
private ArrayList<String[]> objects;
private String calledFrom;
private SimpleDateFormat formatted;
private Calendar cal;
CustomAdapter(Context context, ArrayList<String[]> objects, String calledFrom) {
// super(context, textViewResourceId, objects);
initialization(context, objects, calledFrom);
}
public CustomAdapter(ArrayList<String[]> invoiceListData, String previouspayments) {
}
void initialization(Context context, ArrayList<String[]> objects, String calledFrom){
adapterContext=context;
inflater = ( LayoutInflater )context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.objects=objects;
this.filteredObjects=objects;
this.calledFrom=calledFrom;
//
}
@Override
public int getCount() {
return filteredObjects.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
private class Holder {
//Customers List-----------
TextView customerName,phone,address,amount;
ImageView callButton;
//Suppliers List------------
TextView supplierName;
//Sales list----------------
TextView invoiceNo,contactPerson,balAmount,paidAmount,dueDate, dueDays;
//Approvals-----------------
TextView entryNo,paymentMode,paymentdate;
//ApprovalDetails-----------
TextView invoiceAmount,currentAmount,currentAmountLabel;
//Other expense approval
TextView expNo,expDate,description;
TextView entryN,compN,payD,payM,payA,payT,appD,genN;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Holder holder;
final int fPos=position;
switch (calledFrom) {
//--------------------------for purchase invoice list items------------------
//--------------------------for customer list items------------------
//--------------------------for approval list items------------------
//--------------------------for approval details list items------------------
//--------------------------for other expense approval list items------------------
case Common.PREVIOUSPAYMENTS:
if (convertView == null) {
holder = new Holder();
convertView = inflater.inflate(R.layout.item_previous_approvals, null);
holder.entryN = (TextView) convertView.findViewById(R.id.entry_no);
holder.compN=(TextView)convertView.findViewById(R.id.company_name);
holder.payD=(TextView)convertView.findViewById(R.id.payment_date);
holder.payM=(TextView)convertView.findViewById(R.id.payment_mode);
holder.payA=(TextView)convertView.findViewById(R.id.payment_amount);
holder.payT=(TextView)convertView.findViewById(R.id.payment_type);
holder.appD=(TextView)convertView.findViewById(R.id.approval_date);
holder.genN=(TextView)convertView.findViewById(R.id.general_note);
convertView.setTag(holder);
} else {
holder = (Holder) convertView.getTag();
}
//Label loading--------------------
// holder.paidAmount.setText((filteredObjects.get(position)[6].equals("null")?"-":adapterContext.getResources().getString(R.string.paid_amount,filteredObjects.get(position)[6])));
holder.entryN.setText((filteredObjects.get(position)[1].equals("null")?"-":filteredObjects.get(position)[1]));
holder.compN.setText((filteredObjects.get(position)[2].equals("null")?"-":filteredObjects.get(position)[2]));
holder.payD.setText((filteredObjects.get(position)[3].equals("null")?"-":filteredObjects.get(position)[3]));
holder.payM.setText((filteredObjects.get(position)[4].equals("null")?"-":filteredObjects.get(position)[4]));
holder.payA.setText((filteredObjects.get(position)[5].equals("null")?"-":adapterContext.getResources().getString(R.string.paid_amount,filteredObjects.get(position)[5])));
holder.payT.setText((filteredObjects.get(position)[6].equals("null")?"-":filteredObjects.get(position)[6]));
holder.appD.setText((filteredObjects.get(position)[7].equals("null")?"-":adapterContext.getResources().getString(R.string.Ap_date,filteredObjects.get(position)[7])));
holder.genN.setText((filteredObjects.get(position)[8].equals("null")?"-":filteredObjects.get(position)[8]));
break;
}
return convertView;
}
//Filtering--------------------------------------
private ItemFilter mFilter = new ItemFilter();
private ArrayList<String[]> filteredObjects;
private List<Integer> dataItemPosition;
Filter getFilter(List<Integer> dataItem) {
dataItemPosition=dataItem;
return mFilter;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
int count = objects.size();
final ArrayList<String[]> filteredList = new ArrayList<String[]>(count);
for (int i = 0; i < count; i++) {
for(int j=0;j<dataItemPosition.size();j++) {
if (objects.get(i)[dataItemPosition.get(j)].toLowerCase().contains(filterString)) {
filteredList.add(objects.get(i));
break;//found at least one item
}
}
}
results.values = filteredList;
results.count = filteredList.size();
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filteredObjects = (ArrayList<String[]>) results.values;
notifyDataSetChanged();
}
}
}
答案 0 :(得分：0)
使用过滤器时，您实现的逻辑不起作用。为此，您必须使用adapterSelection.selectedItem = getAdapterPosition()。
确保自定义适配器中的parent.getAdapter().getItem(position);返回正确的数据。
更改
getItem(position)您的CustomAdapter中的此代码
@Override
public Object getItem(int position) {
return position;
}
在@Override
public String[] getItem(int position) {
return filteredObjects.get(position);
}
setOnItemClickListner的以下代码
CustomerList