当我选中一些值时，我只需要修改Spinner中的值，当我选中CheckBox时，我需要修改SetEnabled True / False。
例如，当我检查chekcbox时，我将启用微调器并在取消选中复选框时执行相反操作。
但是当我滚动时，它会随机变化。
这是我的代码：
CustomListView.java
class CustomListView extends BaseAdapter {
private ArrayList<ListItem2> listData;
private LayoutInflater layoutInflater;
private Context context;
public CustomListView adapter = this;
String jmlCmbSiap;
ArrayList<String> a = new ArrayList<>();
public CustomListView(Context context, ArrayList<ListItem2> listData) {
this.listData = listData;
layoutInflater = LayoutInflater.from(context);
this.context = context;
}
@Override
public int getCount() {
return listData.size();
}
@Override
public Object getItem(int position) {
return listData.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
newsItem = listData.get(position);
if (convertView == null) {
convertView = layoutInflater.inflate(R.layout.listview_detail_order, null);
holder = new ViewHolder();
newsItem.setAdapter(Integer.parseInt(newsItem.getJumlah()));
holder.txtBarang = (TextView) convertView.findViewById(R.id.txtBarang);
holder.txtJumlah = (TextView) convertView.findViewById(R.id.txtJumlah);
holder.txtBox = (TextView) convertView.findViewById(R.id.txtBoxes);
holder.cmbSiap = (Spinner) convertView.findViewById(R.id.cmbSiap);
holder.cmbSiap.setAdapter(newsItem.getAdapter());
holder.thumbImage = (ImageView) convertView.findViewById(R.id.thumbImage);
holder.chkOk = (CheckBox) convertView.findViewById(R.id.chkOk);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
Picasso
.with(context)
.load(newsItem.getImg())
.placeholder(R.drawable.placeholder)
.error(R.drawable.placeholder)
.into(holder.thumbImage);
holder.txtBarang.setText(newsItem.getNamaProduk().toUpperCase());
holder.txtJumlah.setText(newsItem.getJumlah().toUpperCase());
holder.cmbSiap.setSelection(Integer.parseInt(newsItem.getJumlah()));
holder.cmbSiap.setEnabled(newsItem.getcmbSiap());
holder.txtBox.setEnabled(newsItem.gettxtBox());
holder.cmbSiap.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
jmlCmbSiap = parent.getItemAtPosition(position).toString();
newsItem.setJumlah(jmlCmbSiap);
holder.cmbSiap.setSelection(Integer.parseInt(newsItem.getJumlah()));
System.out.println("JML : " + newsItem.getJumlah());
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
holder.chkOk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (newsItem.getchkOk() == false) {
newsItem.setcmbSiap(true);
newsItem.setchkOk(true);
newsItem.settxtBox(true);
holder.cmbSiap.setEnabled(true);
holder.chkOk.setChecked(true);
txtBox.setEnabled(true);
numberChecked = numberChecked + 1;
idChkOk.add(position);
System.out.println("Chk : " + idChkOk);
} else {
numberChecked = numberChecked - 1;
newsItem.setcmbSiap(false);
newsItem.setchkOk(false);
holder.cmbSiap.setEnabled(false);
holder.chkOk.setChecked(false);
if (numberChecked == 0) {
newsItem.settxtBox(false);
txtBox.setEnabled(false);
}
idChkOk.remove(position);
System.out.println("Chk : " + idChkOk);
}
}
});
cmdPak.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
a.clear();
for (int i = 0; i < listData.size(); i++)
{
newsItem = listData.get(i);
a.add(newsItem.getJumlah().toString());
}
System.out.println("Pak : " + a);
}
});
return convertView;
}
class ViewHolder {
TextView txtBarang,txtJumlah,txtBox;
Spinner cmbSiap;
ImageView thumbImage;
CheckBox chkOk;
}
}
ListItem2.java
class ListItem2 {
private String shipment;
private String truck;
private String transporter;
private String tanggal;
private String order;
private String nilai;
private String alamat;
private String status;
private String jumlah;
private String namaProduk;
private String img;
private String sopir;
private String jumlahTerima;
private String alasan;
private String orderTemp;
private Boolean chkOk;
private Boolean cmbSiap;
private Boolean txtBox;
private ArrayAdapter<CharSequence> adapter;
private ArrayList<String> array = new ArrayList<String>();
public void setAdapter(Integer jml)
{
for (int i = 0; i<= jml; i++) {
array.add(String.valueOf(i));
}
adapter = new ArrayAdapter(DetailOrder.this,android.R.layout.simple_spinner_item,array);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
}
public ArrayAdapter<CharSequence> getAdapter()
{
return adapter;
}
public void setTanggal(String tanggal) {
this.tanggal = tanggal;
}
public String getOrder() {
return order;
}
public void setOrder(String order) {
this.order = order;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getAlamat() {
return alamat;
}
public void setAlamat(String alamat) {
this.alamat = alamat;
}
public String getNilai() {
return nilai;
}
public void setNilai(String nilai) {
this.nilai = nilai;
}
public String getKodeProduk() {
return nilai;
}
public void setKodeProduk(String nilai) {
this.nilai = nilai;
}
public String getNamaProduk() {
return namaProduk;
}
public void setNamaProduk(String namaProduk) {
this.namaProduk = namaProduk;
}
public String getJumlah() {
return jumlah;
}
public void setJumlah(String jumlah) {
this.jumlah = jumlah;
}
public Boolean getchkOk() {
return chkOk;
}
public void setchkOk(Boolean chkOk) {
this.chkOk = chkOk;
}
public Boolean getcmbSiap() {
return cmbSiap;
}
public void setcmbSiap(Boolean cmbSiap) {
this.cmbSiap = cmbSiap;
}
public Boolean gettxtBox() {
return txtBox;
}
public void settxtBox(Boolean txtBox) {
this.txtBox = txtBox;
}
}
你可以帮我一把吗？
更新：
chkAll.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View views;
CheckBox chkOkx;
Spinner cmbSiap;
for (int i = 0; i < jArray; i++) {
final ListItem2 newsItem = listData.get(i);
views = listView.getChildAt(i);
if (views == null) {
return;
} else {
chkOkx = (CheckBox) views.findViewById(R.id.chkOk);
cmbSiap = (Spinner) views.findViewById(R.id.cmbSiap);
if (chkOkx.isChecked()) {
newsItem.setchkOk(true);
newsItem.setcmbSiap(true);
chkOkx.setChecked(newsItem.getchkOk());
cmbSiap.setEnabled(newsItem.getcmbSiap());
} else {
newsItem.setchkOk(false);
newsItem.setcmbSiap(false);
chkOkx.setChecked(newsItem.getchkOk());
cmbSiap.setEnabled(newsItem.getcmbSiap());
}
idChkOk.add(i);
}
}
if (chkAll.isChecked()) {
txtBox.setEnabled(true);
numberChecked = 0;
} else {
txtBox.setEnabled(false);
numberChecked = listviewChild;
}
listView.invalidateViews();
}
});
答案 0 :(得分：1)
滚动时在ListView中，视图将被销毁并重新创建。要解决此问题，您需要同时保留复选框状态和微调器项的值。
对于复选框，将检查状态从 setOnClickListener 保存在布尔数组中，
if (((CheckBox) v).isChecked()) {
checkBoxState[position] = true;
} else {
checkBoxState[position] = false;
}
布尔数组应该是这样的，
private boolean[] checkBoxState;
稍后 getView（）根据数组应用每个复选框项的检查/取消选中状态
holder.checkBox.setChecked(checkBoxState[position]);
与保存微调器数据类似，创建一个Hashmap
Map<Integer, Integer> myMap = new HashMap<Integer, Integer>();
并保存微调器数据，一旦从 setOnItemSelectedListener
中选择 myMap.put(position, pos);
稍后从保存的数据中恢复微调器选择位置
if (myMap.containsKey(position)) {
viewHolder.spinner.setSelection(myMap.get(position));
}
完整代码，
class CustomListView extends BaseAdapter {
private ArrayList<ListItem2> listData;
private LayoutInflater layoutInflater;
private Context context;
public CustomListView adapter = this;
String jmlCmbSiap;
ArrayList<String> a = new ArrayList<>();
private boolean[] checkBoxState;
private Map<Integer, Integer> myMap = new HashMap<Integer, Integer>();
public CustomListView(Context context, ArrayList<ListItem2> listData) {
this.listData = listData;
layoutInflater = LayoutInflater.from(context);
checkBoxState = new boolean[listData.size()];
this.context = context;
}
@Override
public int getCount() {
return listData.size();
}
@Override
public Object getItem(int position) {
return listData.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
newsItem = listData.get(position);
if (convertView == null) {
convertView = layoutInflater.inflate(R.layout.listview_detail_order, null);
holder = new ViewHolder();
newsItem.setAdapter(Integer.parseInt(newsItem.getJumlah()));
holder.txtBarang = (TextView) convertView.findViewById(R.id.txtBarang);
holder.txtJumlah = (TextView) convertView.findViewById(R.id.txtJumlah);
holder.txtBox = (TextView) convertView.findViewById(R.id.txtBoxes);
holder.cmbSiap = (Spinner) convertView.findViewById(R.id.cmbSiap);
holder.cmbSiap.setAdapter(newsItem.getAdapter());
holder.thumbImage = (ImageView) convertView.findViewById(R.id.thumbImage);
holder.chkOk = (CheckBox) convertView.findViewById(R.id.chkOk);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.checkBox.setChecked(checkBoxState[position]);
if (checkBoxState[position])
{
holder.chkOk.setChecked(true);
newsItem.setcmbSiap(true);
newsItem.settxtBox(true);
holder.cmbSiap.setEnabled(true);
holder.cmbSiap.setClickable(true);
txtBox.setEnabled(true);
}
else
{
holder.chkOk.setChecked(false);
newsItem.setcmbSiap(false);
newsItem.settxtBox(false);
holder.cmbSiap.setEnabled(false);
holder.cmbSiap.setClickable(false);
txtBox.setEnabled(false);
}
Picasso
.with(context)
.load(newsItem.getImg())
.placeholder(R.drawable.placeholder)
.error(R.drawable.placeholder)
.into(holder.thumbImage);
holder.txtBarang.setText(newsItem.getNamaProduk().toUpperCase());
holder.txtJumlah.setText(newsItem.getJumlah().toUpperCase());
holder.cmbSiap.setSelection(Integer.parseInt(newsItem.getJumlah()));
holder.cmbSiap.setEnabled(newsItem.getcmbSiap());
holder.txtBox.setEnabled(newsItem.gettxtBox());
if (myMap.containsKey(position)) {
viewHolder.spinner.setSelection(myMap.get(position));
}
holder.cmbSiap.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
jmlCmbSiap = parent.getItemAtPosition(position).toString();
newsItem.setJumlah(jmlCmbSiap);
myMap.put(position, pos);
System.out.println("JML : " + newsItem.getJumlah());
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
holder.chkOk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//is chkOk checked?
if (((CheckBox) v).isChecked()) {
checkBoxState[position] = true;
viewHolder.spinner.setEnabled(true);
viewHolder.spinner.setClickable(true);
} else {
checkBoxState[position] = false;
viewHolder.spinner.setEnabled(false);
viewHolder.spinner.setClickable(false);
}
}
});
cmdPak.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
a.clear();
for (int i = 0; i < listData.size(); i++)
{
newsItem = listData.get(i);
a.add(newsItem.getJumlah().toString());
}
System.out.println("Pak : " + a);
}
});
return convertView;
}
class ViewHolder {
TextView txtBarang,txtJumlah,txtBox;
Spinner cmbSiap;
ImageView thumbImage;
CheckBox chkOk;
}
}
<强>更新
为了选择全部/取消选择所有复选框功能，
在适配器类的顶部创建一个布尔标志，
boolean isCheckAll = false;
然后创建一个切换方法，
public void toggleCheckAll() {
isCheckAll = !isCheckAll;
for (int i = 0; i < listData.size(); i++) {
if (isCheckAll) {
checkBoxState[i] = true;
notifyDataSetInvalidated();
} else {
checkBoxState[i] = false;
notifyDataSetInvalidated();
}
}
}
现在通过您的aactivity检查所有按钮的点击来调用该方法，
btnCheckAll.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
adapter.toggleCheckAll();
}
});