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POCustom ListView with Scrolling
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  1. POCustom ListView with Scrolling
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    copied!<p>I am facing a problem in custom listview where i am having 10 rows of values displayed inside the textview from db. When i scroll the list the items are duplicated. Consider that i have number of rows named from 1 to 10. if i scroll it, the rows are duplicated as 1,2,3,4,5,1,6,7,8,9,2,3,etc.. the same values are again displayed. I don't know why this occurs. If i remove 5 items and disable scrolling, then it does not have any sort of issues. Adding more number of rows with scrolling enabled arises this issue.</p> <pre><code> private class ItemLayoutListViewAdapter extends BaseAdapter { Context context; Hold myHold; String[] TableNo, MachineId, ItemName, Quantity, Progress, Timer; private ItemLayoutListViewAdapter(Context context, String[] aTableNo, String[] aMachineId, String[] aItemName, String[] aQuantity, String[] aProgress, String[] aTimer) { this.TableNo = aTableNo; this.MachineId = aMachineId; this.ItemName = aItemName; this.Quantity = aQuantity; this.Progress = aProgress; this.Timer = aTimer; this.context = context; } private class Hold { TextView[] tvItemLayoutListItems = new TextView[6]; ImageButton ibItemCustomization, ibCorrect, ibWrong; ImageButton[] ibUpDownArrow = new ImageButton[2]; Button bnProgress; Chronometer chTimer; } @Override public int getCount() { return TableNo.length; } @Override public Object getItem(int arg0) { return arg0; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return 0; } @Override public View getView(final int arg0, View arg1, ViewGroup arg2) { if (arg1 == null) { LayoutInflater inflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); arg1=inflater.inflate(R.layout.kitchen_item_list_view_layout,null); myHold = new Hold(); int[] tvItemLayoutListItemsIds = { R.id.tvTableNo, R.id.tvMachineId, R.id.tvItemName, R.id.tvQuantity,R.id.tvTimer, R.id.tvDummyItemName }; int[] ibUpDownArrowIds = { R.id.ibArrowUp, R.id.ibArrowDown }; for(int itvItemLayoutListItemsIdsCtr = 0; itvItemLayoutListItemsIdsCtr &lt; tvItemLayoutListItemsIds.length;itvItemLayoutListItemsIdsCtr++) { myHold.tvItemLayoutListItems[itvItemLayoutListItemsIdsCtr] = (TextView) arg1 .findViewById(tvItemLayoutListItemsIds[itvItemLayoutListItemsIdsCtr]); } myHold.chTimer = (Chronometer) arg1.findViewById(R.id.chTimer); myHold.bnProgress = (Button) arg1.findViewById(R.id.bnProgress); myHold.tvItemLayoutListItems[0].setText(TableNo[arg0]); myHold.tvItemLayoutListItems[1].setText(MachineId[arg0]); myHold.tvItemLayoutListItems[2].setText(ItemName[arg0]); myHold.tvItemLayoutListItems[3].setText(Quantity[arg0]); myHold.tvItemLayoutListItems[4].setText(Timer[arg0]); myHold.ibCorrect = (ImageButton) arg1 .findViewById(R.id.ibCorrect); myHold.ibCorrect.setTag(myHold); myHold.ibCorrect.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Hold Itemholder; Itemholder = (Hold) arg0.getTag(); if (Itemholder.tvItemLayoutListItems[5].getText() .equals("Orange")) { Itemholder.tvItemLayoutListItems[2] .setBackground(context.getResources() .getDrawable( R.drawable.textview_green)); } else { Itemholder.tvItemLayoutListItems[2] .setBackground(context.getResources() .getDrawable( R.drawable.textview_orange)); ; Itemholder.tvItemLayoutListItems[5] .setText("Orange"); } } }); myHold.ibWrong = (ImageButton) arg1.findViewById(R.id.ibWrong); myHold.ibWrong.setTag(myHold); myHold.ibWrong.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { Hold Itemholder; Itemholder = (Hold) arg0.getTag(); Itemholder.tvItemLayoutListItems[2] .setBackground(context .getResources() .getDrawable(R.drawable.textview_border)); } }); myHold.ibItemCustomization = (ImageButton) arg1 .findViewById(R.id.ibItemCustomization); myHold.ibItemCustomization .setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { new item_customization(context).CustomizeItem(); } }); for (int iibUpDownArrowIdsCtr = 0; iibUpDownArrowIdsCtr &lt; ibUpDownArrowIds.length; iibUpDownArrowIdsCtr++) { myHold.ibUpDownArrow[iibUpDownArrowIdsCtr] = (ImageButton) arg1 .findViewById(ibUpDownArrowIds[iibUpDownArrowIdsCtr]); myHold.ibUpDownArrow[iibUpDownArrowIdsCtr].setTag(myHold); } myHold.ibUpDownArrow[0] .setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { IncDecTimer(arg0,true); } }); myHold.ibUpDownArrow[1] .setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { IncDecTimer(arg0,false); } }); myHold.chTimer.setTag(myHold); myHold.tvItemLayoutListItems[4].setTag(myHold); myHold.chTimer.setBase(1000); myHold.chTimer.start(); myHold.chTimer .setOnChronometerTickListener(new OnChronometerTickListener() { @Override public void onChronometerTick(Chronometer arg0) { final Hold Timerholder; Timerholder = (Hold) arg0.getTag(); String[] sTimer = Timerholder.tvItemLayoutListItems[4] .getText().toString().split(":"); int iMin, iSec, iSecValue; iMin = Integer.parseInt(sTimer[0]); iSec = Integer.parseInt(sTimer[1]); if (iSec == 0) { iMin = iMin - 1; if (iMin == -1) { Timerholder.tvItemLayoutListItems[4] .setText("00:00"); Timerholder.chTimer.stop(); } iSecValue = 60; } else { iSecValue = iSec; } iSecValue = iSecValue - 1; String sMin, sSec; if (iMin &lt; 10) { sMin = "0"; } else { sMin = ""; } if (iSecValue &lt; 10) { sSec = "0"; } else { sSec = ""; } if (iMin &gt; -1) { Timerholder.tvItemLayoutListItems[4].setText(sMin .concat(String.valueOf(iMin)) .concat(":").concat(sSec) .concat(String.valueOf(iSecValue))); } } }); arg1.setTag(myHold); } else { arg1.getTag(); } return arg1; } </code></pre> <p>Please do help me. If you need the code is please let me know. I have kept the basic custom listview with text view inside it. </p>
 

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