我有一个列表视图，其中每行都有一个复选框以及详细信息。现在单击复选框，我想将这些人的id存储在我能够存储的arrayList中，但是在适配器中存储了arrayList id。我想在活动中访问arrayList，因为我想点击活动中的按钮，我想将所有选定人员的ID发送到另一个活动。我该怎么做。
我的代码如下：
public class SendWorkList extends AppCompatActivity {
List<SendWorkRow> send_work_array_list;
ListView send_work_list;
JSONArray send_work_jsonArray1,send_work_result_jsonArray2;
JSONObject send_work_jsonObject1,send_work_result_jsonArray2_i;
String[] send_work_id,send_work_name,send_work_bankaccount,send_work_ifsc,send_work_contacts,send_work_department,send_work_cardnumber,send_work_cardexpiry,send_work_cardcvv;
String send_work_status,send_work_result;
ViewGroup send_work_headerView;
Set<Integer> send_work_count;
Intent intent;
Set<String> indexes;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send_work);
send_work_list=findViewById( R.id.send_work_list);
send_work_array_list=new ArrayList<SendWorkRow>();
send_work_count= new HashSet<>();
}
@Override
protected void onResume() {
super.onResume();
cardDetailsList();
/* send_work_list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(SendWorkList.this, "assasa", Toast.LENGTH_SHORT).show();
}
});*/
}
private void cardDetailsList()
{
RequestQueue rq = Volley.newRequestQueue(SendWorkList.this);
StringRequest stringRequest = new StringRequest( Request.Method.GET,
"http://grepthorsoftware.in/tst/bank_account/showingdata.php",
new Response.Listener<String>() {
public void onResponse(String response) {
try {
send_work_jsonArray1=new JSONArray(response);
send_work_jsonObject1 = send_work_jsonArray1.getJSONObject(0);
send_work_status= send_work_jsonObject1.getString("status");
if(send_work_status.equals("1")) {
send_work_result = send_work_jsonObject1.getString("result");
send_work_result_jsonArray2 = new JSONArray(send_work_result);
send_work_id = new String[send_work_result_jsonArray2.length()];
send_work_name = new String[send_work_result_jsonArray2.length()];
send_work_bankaccount = new String[send_work_result_jsonArray2.length()];
send_work_ifsc = new String[send_work_result_jsonArray2.length()];
send_work_contacts = new String[send_work_result_jsonArray2.length()];
send_work_department =new String[send_work_result_jsonArray2.length()];
send_work_cardnumber = new String[send_work_result_jsonArray2.length()];
send_work_cardexpiry = new String[send_work_result_jsonArray2.length()];
send_work_cardcvv= new String[send_work_result_jsonArray2.length()];
if ( send_work_name.length > 0 || send_work_id.length > 0 || send_work_bankaccount.length > 0 || send_work_ifsc.length > 0 || send_work_contacts.length > 0)
{
send_work_id = null;
send_work_name = null;
send_work_bankaccount = null;
send_work_ifsc = null;
send_work_contacts = null;
send_work_department= null;
send_work_cardnumber= null;
send_work_cardexpiry= null;
send_work_cardcvv= null;
send_work_id = new String[send_work_result_jsonArray2.length()];
send_work_name = new String[send_work_result_jsonArray2.length()];
send_work_bankaccount = new String[send_work_result_jsonArray2.length()];
send_work_ifsc = new String[send_work_result_jsonArray2.length()];
send_work_contacts = new String[send_work_result_jsonArray2.length()];
send_work_department =new String[send_work_result_jsonArray2.length()];
send_work_cardnumber = new String[send_work_result_jsonArray2.length()];
send_work_cardexpiry = new String[send_work_result_jsonArray2.length()];
send_work_cardcvv= new String[send_work_result_jsonArray2.length()];
}
for(int i=0;i<send_work_result_jsonArray2.length();i++)
{
send_work_result_jsonArray2_i=send_work_result_jsonArray2.getJSONObject(i);
send_work_id[i] = send_work_result_jsonArray2_i.getString("id");
send_work_name[i] = send_work_result_jsonArray2_i.getString("Name");
send_work_bankaccount[i] = send_work_result_jsonArray2_i.getString("Bankaccount");
send_work_ifsc[i] = send_work_result_jsonArray2_i.getString("IFSC");
send_work_contacts[i] = send_work_result_jsonArray2_i.getString("Contact");
send_work_department[i] = send_work_result_jsonArray2_i.getString("Department");
send_work_cardnumber[i] = send_work_result_jsonArray2_i.getString("Cardnumber");
send_work_cardexpiry[i] = send_work_result_jsonArray2_i.getString("Cardexpiry");
send_work_cardcvv[i] = send_work_result_jsonArray2_i.getString("Cardcvv");
}
if ( send_work_array_list.size() > 0) {
send_work_array_list.clear();
}
for (int i = 0; i < send_work_id.length && i< send_work_name.length && i < send_work_bankaccount.length && i < send_work_ifsc.length && i < send_work_contacts.length && i < send_work_department.length && i< send_work_cardnumber.length && i< send_work_cardexpiry.length && i< send_work_cardcvv.length; i++) {
send_work_array_list.add(new SendWorkRow( send_work_id[i], send_work_name[i], send_work_bankaccount[i], send_work_ifsc[i], send_work_contacts[i], send_work_department[i], send_work_cardnumber[i], send_work_cardexpiry[i],send_work_cardcvv[i]));
}
if ( send_work_headerView != null) {
send_work_list.removeHeaderView( send_work_headerView);
}
send_work_headerView = (ViewGroup) getLayoutInflater().inflate(R.layout.send_work_list_view_header, send_work_list, false);
send_work_list.addHeaderView( send_work_headerView);
send_work_list.setAdapter(new SendWorkAdapter(SendWorkList.this, send_work_array_list));
}
}catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
};
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError arg0) {
// TODO Auto-generated method stub
}
})
{
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
return params;
}
};
rq.add(stringRequest);
}
}
SendWorkAdapter.java
public class SendWorkAdapter extends BaseAdapter {
Context context;
List<SendWorkRow> send_work_array_list;
Set<String> indexes;
public SendWorkAdapter(Context context, List<SendWorkRow> send_work_array_list)
{
this.context=context;
this.send_work_array_list=send_work_array_list;
indexes = new HashSet<String>();
}
@Override
public int getCount() {
return send_work_array_list.size();
}
@Override
public Object getItem(int i) {
return i;
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(final int position, View convertView, ViewGroup viewGroup) {
LayoutInflater inflater= (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE );
View view=inflater.inflate( R.layout.send_work_list_view_row,viewGroup,false);
CheckBox textView1=view.findViewById( R.id.send_work_checkbox_row);
TextView textView2=view.findViewById( R.id.send_work_name_row );
TextView textView3=view.findViewById( R.id.send_work_bank_account_row );
TextView textView4=view.findViewById( R.id.send_work_ifsc_row );
TextView textView5=view.findViewById( R.id.send_work_contact_number_row );
TextView textView6=view.findViewById( R.id.send_work_department_row );
TextView textView7=view.findViewById( R.id.send_work_card_number_row );
TextView textView8=view.findViewById( R.id.send_work_expiry_date_row );
TextView textView9=view.findViewById( R.id.send_work_cvv_row );
final SendWorkRow account_details_row=send_work_array_list.get( position );
textView2.setText( account_details_row.getSendWorkCardDetailsName() );
textView3.setText( account_details_row.getSendWorkCardDetailsBankAccount() );
textView4.setText( account_details_row.getSendWorkCardDetailsIfsc());
textView5.setText( account_details_row.getSendWorkCardDetailsContacts() );
textView6.setText( account_details_row.getSendWorkCardDetailsDepartment() );
textView7.setText( account_details_row.getSendWorkCardDetailsCardNumber() );
textView8.setText( account_details_row.getSendWorkCardDetailsCardExpiry() );
textView9.setText( account_details_row.getSendWorkCardDetailsCardCvv() );
textView1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if(compoundButton.isChecked()){
Toast.makeText(context, account_details_row.getSendWorkCardDetailsId(), Toast.LENGTH_SHORT).show();
indexes.add(account_details_row.getSendWorkCardDetailsId());
}
}
});
return view;
}
}
SendWorkRow.java
public class SendWorkRow {
private String send_work_id,send_work_name,send_work_bankaccount,send_work_ifsc,send_work_contacts,send_work_department,send_work_cardnumber,send_work_cardexpiry,send_work_cardcvv;
public SendWorkRow(String send_work_id, String send_work_name, String send_work_bankaccount, String send_work_ifsc, String send_work_contacts,String send_work_department,String send_work_cardnumber,String send_work_cardexpiry,String send_work_cardcvv) {
this.send_work_id = send_work_id;
this.send_work_name = send_work_name;
this.send_work_bankaccount = send_work_bankaccount;
this.send_work_ifsc = send_work_ifsc;
this.send_work_contacts = send_work_contacts;
this.send_work_department = send_work_department;
this.send_work_cardnumber = send_work_cardnumber;
this.send_work_cardexpiry = send_work_cardexpiry;
this.send_work_cardcvv = send_work_cardcvv;
}
//Getters
public String getSendWorkCardDetailsId() {
return send_work_id;
}
public String getSendWorkCardDetailsName() {
return send_work_name;
}
public String getSendWorkCardDetailsBankAccount() {
return send_work_bankaccount;
}
public String getSendWorkCardDetailsIfsc() {
return send_work_ifsc;
}
public String getSendWorkCardDetailsContacts() {
return send_work_contacts;
}
public String getSendWorkCardDetailsDepartment() {
return send_work_department;
}
public String getSendWorkCardDetailsCardNumber() {
return send_work_cardnumber;
}
public String getSendWorkCardDetailsCardExpiry() {
return send_work_cardexpiry;
}
public String getSendWorkCardDetailsCardCvv() {
return send_work_cardcvv;
}
}
答案 0 :(得分：2)
在适配器中创建一个方法，如
public class SendWorkAdapter extends BaseAdapter {
public List<SendWorkRow> getAllWorkRows() {
return send_work_array_list;
}
}
并使用activity中的适配器实例访问此方法。
另一种方法是你可以在Adapter中编写一个方法，你可以在List中找到所有选定的id并返回。因此，每当您需要选定ID的列表时，请从Activity调用此方法并执行您的任务。像
public class SendWorkAdapter extends BaseAdapter {
public List<SendWorkRow> getAllSelectedWorkRows() {
// write your logic to find selected rows
return result;
}
}