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私はすべてのユーザーの連絡先と関連する電話番号を持つリストビューを持っています。複数のセル/行を選択できるようにしておき、ユーザーが選択した連絡先をハイライト表示して、ユーザーがその状態を失わないようにする必要があります。選択した場合、アンドロイドリストビューで複数の項目を強調表示します。
次のようなカスタムアダプター設定があります。
public class ContactsListAdapter extends BaseAdapter {
private static final String TAG = "ContactsListAdapter";
/*********** Declare Used Variables *********/
private Activity activity;
private ArrayList data;
private static LayoutInflater inflater=null;
public Resources res;
ContactsModel tempValues=null;
int i=0;
public ContactsListAdapter(Activity a, ArrayList d, Resources resLocal) {
/********** Take passed values **********/
activity = a;
data=d;
res = resLocal;
/*********** Layout inflator to call external xml layout() ***********/
inflater = (LayoutInflater)activity.
getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
if (data != null) {
if(data.size()<=0)
return 1;
return data.size();
} else
return 0;
}
@Override
public Object getItem(int position) {
if (data != null)
return position;
return null;
}
@Override
public long getItemId(int position) {
if (data != null)
return position;
return 0;
}
/********* Create a holder Class to contain inflated xml file elements *********/
public static class ViewHolder{
public RelativeLayout containerView;
public TextView fullname;
public TextView phone_number;
}
@Override
public View getView(final int position, View convertView, ViewGroup viewGroup) {
View vi = convertView;
final ContactsListAdapter.ViewHolder holder;
if(convertView==null){
/****** Inflate tabitem.xml file for each row (Defined below) *******/
vi = inflater.inflate(R.layout.contacts_list_item, null);
/****** View Holder Object to contain tabitem.xml file elements ******/
holder = new ContactsListAdapter.ViewHolder();
holder.fullname = vi.findViewById(R.id.contactName);
holder.phone_number = vi.findViewById(R.id.contactPhoneNumber);
holder.containerView = vi.findViewById(R.id.containerView);
/************ Set holder with LayoutInflater ************/
vi.setTag(holder);
}
else
holder=(ContactsListAdapter.ViewHolder)vi.getTag();
if(data.size()<=0)
{
//holder.username.setText("No Data");
}
else
{
/***** Get each Model object from Arraylist ********/
tempValues=null;
tempValues = (ContactsModel) data.get(position);
holder.fullname.setText(tempValues.getFullname());
holder.phone_number.setText(tempValues.getPhone_number());
}
return vi;
}
}
class Contacts(context: Context, listview : ListView, adapter : ContactsListAdapter?, CustomListViewValuesArr : ArrayList<ContactsModel>, progress : ProgressBar?) : AsyncTask<Unit, Unit, Unit>() {
val context : Context = context
var listview : ListView = listview
var adapter : ContactsListAdapter? = adapter
var CustomListViewValuesArr : ArrayList<ContactsModel> = CustomListViewValuesArr
var holder : ArrayList<ContactsModel>? = null
var progress : ProgressBar? = progress
override fun onPreExecute() {
super.onPreExecute()
progress!!.visibility = View.VISIBLE
progress!!.animate()
}
override fun doInBackground(vararg params: Unit?) {
var obj : JSONObject = JSONObject()
var contactsModels : ArrayList<ContactsModel> = arrayListOf()
var cr : ContentResolver = context.contentResolver
var cur : Cursor = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null)
if ((if(cur != null) cur.getCount() else 0) > 0) {
while (cur != null && cur.moveToNext()) {
val id = cur.getString(
cur.getColumnIndex(ContactsContract.Contacts._ID))
val name = cur.getString(cur.getColumnIndex(
ContactsContract.Contacts.DISPLAY_NAME))
if (cur.getInt(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)) > 0) {
val pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
arrayOf(id), null)
while (pCur.moveToNext()) {
var phoneNo : String = pCur.getString(pCur.getColumnIndex(
ContactsContract.CommonDataKinds.Phone.NUMBER)).replace("\\D", "")
obj.put(name, phoneNo)
var model : ContactsModel = ContactsModel()
model.fullname = name
model.phone_number = phoneNo
contactsModels.add(model)
}
pCur.close()
}
}
holder = contactsModels
}
}
override fun onPostExecute(result: Unit?) {
super.onPostExecute(result)
CustomListViewValuesArr.clear()
CustomListViewValuesArr.addAll(holder!!)
//Log.d(TAG, "Adapter Notify")
adapter!!.notifyDataSetChanged()
progress!!.visibility = View.GONE
}
}
これは、選択した連絡先にhightlightし、これまでの私の最善の解決策であるが、問題は、あなたがスクロールするとき、それは連絡先の残りの部分の背景の設定に失敗したということです。
contactsListView!!.setOnItemClickListener(object : AdapterView.OnItemClickListener {
override fun onItemClick(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
val items = contactsListView!!.getCheckedItemPositions()
for (i in 0 until contactsListView!!.getAdapter().getCount()) {
if (items.get(i) == true) {
parent!!.getChildAt(i).setBackgroundColor(getResources().getColor(R.color.hapningGrey))
val contactName = parent.getChildAt(i).findViewById<TextView>(R.id.contactName)
val phoneNumber = parent.getChildAt(i).findViewById<TextView>(R.id.contactPhoneNumber)
var itemPhoneNumber : String = phoneNumber.text.toString()
.replace("(", "")
.replace(")", "")
.replace(" ", "")
.replace("-", "")
if (nominatedList.contains(itemPhoneNumber) == false) {
nominatedList.add(itemPhoneNumber)
}
} else {
parent!!.getChildAt(i).setBackgroundColor(Color.TRANSPARENT)
val contactName = parent.getChildAt(i).findViewById<TextView>(R.id.contactName)
val phoneNumber = parent.getChildAt(i).findViewById<TextView>(R.id.contactPhoneNumber)
var itemPhoneNumber : String = phoneNumber.text.toString()
.replace("(", "")
.replace(")", "")
.replace(" ", "")
.replace("-", "")
if (nominatedList.contains(itemPhoneNumber) == true) {
nominatedList.remove(itemPhoneNumber)
}
}
}
Log.d(TAG, nominatedList.toString())
}
})
この時点で助けてください。