android– 当我滚动自定义列表视图时,复选框被取消选中

概述当我在listview中有更多项目时,我选择一些复选框并向下滚动以选择更多复选框,然后在上面选择的复选框取消选择.Plz的帮助.在哪里我可以保存检查状态和位置,当我做刷新列表.代码如下.protectedvoidonCreate(BundlesavedInstanceState){dladapter=newDifferen

当我在ListvIEw中有更多项目时,我选择一些复选框并向下滚动以选择更多复选框,然后在上面选择的复选框取消选择.

Plz的帮助.在哪里我可以保存检查状态和位置,当我做@R_786_6419@.
代码如下.

     protected voID onCreate(Bundle savedInstanceState) {     dladapter = new Differencelistadapter(this,                prodCodeArr, prodDescArr, serialBatchArr, expDtArr, qtyArr, serialNo, 0);        diffeneceLv.setAdapter(dladapter);}     static class VIEwHolder {    TextVIEw srNotv, prodCodetv, prodDesctv, serialBatchNotv, expDatetv, qtytv;    CheckBox consCheckBox;}     public class Differencelistadapter extends BaseAdapter{            Context c;    String[] prodCode, prodDesc, expDate, qty, serialNo, serialBatchNo;    //TextVIEw srNotv, prodCodetv, prodDesctv, serialBatchNotv, expDatetv, qtytv;    EditText consumedEt, disputeEt, OTCEt, patIEntnameEt;    //final ArrayList<String> chkList = new ArrayList<String>();    ArrayList<Boolean> chkState;    //CheckBox consCheckBox;    private boolean checked = false;    VIEwHolder vIEwHolder;    VIEw row;    int f=0;public Differencelistadapter(Context c, String[] prodCode, String[] prodDesc, String[] serialBatchNo, String[] expDate, String[] qty, String[] serialNo, int f){        this.c = c;        this.prodCode= prodCode;        this.prodDesc= prodDesc;        this.serialBatchNo= serialBatchNo;        this.expDate = expDate;        this.qty=qty;        this.serialNo= serialNo;        this.f= f;        chkState = new ArrayList<Boolean>();    }public String[] getChecked(){    return chkList.toArray(new String[chkList.size()]);}       public int getCount() {        // Todo auto-generated method stub        return prodCode.length;    }    public Object getItem(int arg0) {        // Todo auto-generated method stub        return serialBatchNo[arg0];    }    public long getItemID(int position) {        // Todo auto-generated method stub        return position;    }    public CheckBox getCheckBox() {        return vIEwHolder.consCheckBox;    }    public voID toggleChecked() {        checked = !checked;    }    public VIEw getVIEw(int position, VIEw convertVIEw, VIEwGroup parent) {        // Todo auto-generated method stub        final int p= position;        //if (convertVIEw == null) {        vIEwHolder=new VIEwHolder();        LayoutInflater inflater= (LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        row= inflater.inflate(R.layout.consumedstockitemrow, null);             vIEwHolder.consCheckBox = (CheckBox) row.findVIEwByID(R.ID.conschkbx);        vIEwHolder.srNotv=(TextVIEw) row.findVIEwByID(R.ID.rowcdiffSrNoTv);        vIEwHolder.prodCodetv=(TextVIEw) row.findVIEwByID(R.ID.rowcdiffProductCodeTv);        vIEwHolder.prodDesctv=(TextVIEw) row.findVIEwByID(R.ID.rowcdiffProdDescTv);        vIEwHolder.serialBatchNotv=(TextVIEw) row.findVIEwByID(R.ID.rowcdiffSerialBatchTv);        vIEwHolder.expDatetv=(TextVIEw) row.findVIEwByID(R.ID.rowcdiffExpDtTv);        vIEwHolder.qtytv=(TextVIEw) row.findVIEwByID(R.ID.rowcdiffQtyTv);        vIEwHolder.consCheckBox.setonCheckedchangelistener(new OnCheckedchangelistener() {            public voID onCheckedChanged(Compoundbutton buttonVIEw, boolean isChecked) {                // Todo auto-generated method stub                 CheckBox cb = (CheckBox) buttonVIEw;                    if(cb.isChecked()== true)                    {                        if(chkList.contains(serialBatchNo[p]))                        {                        }                        else                        {                        chkList.add(serialBatchNo[p]);                        }                    }                    else                    {                        if(chkList.contains(serialBatchNo[p]))                        {                            chkList.remove(serialBatchNo[p]);                        }                    }            }        });        vIEwHolder.srNotv.setText(String.valueOf(p+1));        vIEwHolder.prodCodetv.setText(prodCode[p].toString());        vIEwHolder.prodDesctv.setText(prodDesc[p].toString());        vIEwHolder.serialBatchNotv.setText(serialBatchNo[p].toString());        vIEwHolder.expDatetv.setText(expDate[p].toString());        vIEwHolder.qtytv.setText(qty[p].toString());        return row;    }}

解决方法:

我找到了一些解决方法
不是最好的,而是做他的工作
如果视图(CheckBox)不再可见,它在checkBox监听器上执行的 *** 作
它不能改变复选框状态
所以当你滚动它不会取消选中你的复选框
仍然需要提供选中复选框的位置列表
并在getVIEw设置状态的复选框

@OverrIDepublic voID onCheckedChanged(Compoundbutton buttonVIEw, boolean isChecked) {    if(buttonVIEw.isShown()) // chek if checkBox is visible     {        int position = buttonVIEw.getID();  // get position of check Box         _selected[position] = buttonVIEw.isChecked(); // set true or false  in List of seleted checkBoxes     }}

getVIEw看起来像这样

 @OverrIDepublic VIEw getVIEw(int position, VIEw convertVIEw, VIEwGroup parentVIEw) {    VIEw vIEw = convertVIEw;    if (vIEw == null) {        LayoutInflater inflater = activity.getLayoutInflater();        vIEw = inflater.inflate(R.layout.layout, null);        VIEwHolder vIEwHolder = new VIEwHolder();        vIEwHolder.tv = (TextVIEw) rowVIEw.findVIEwByID(R.ID.text);        vIEwHolder.cb = (CheckBox) rowVIEw.findVIEwByID(R.ID.check_Box);        vIEwHolder.cb.setonCheckedchangelistener(this);        vIEw.setTag(vIEwHolder);    }    VIEwHolder holder = (VIEwHolder) vIEw.getTag();    holder.tv.setText("Text");    holder.cb.setChecked(_selected[position]); //Geting state of check Box from array    holder.cb.setID(position); // set check Box ID(position in adapter)    return vIEw;}

VIEwHolder

class VIEwHolder{    TextVIEw tv;    CheckBox cb;}

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