我有一个库存检查应用程序，其中材料显示在网格中，每个网格元素都有一个材料图像、数量的编辑文本、检查按钮和一个根据库存是否可用而变成红色或绿色的图像。还有一个文本视图，如果图像为绿色，则设置为“可用”，如果图像为红色，则设置为“不可用”。
我正在使用扩展基本适配器的自定义适配器。
一切正常，直到我按下检查按钮
我使用edittext textwatcher来更改文本在哪个位置但是当我按下复选按钮时，图像在3 * 3网格的第9个元素处设置为绿色。
我正在使用 viewHolder 但它仍然无法正常工作。
任何人都可以请帮忙。
请看下面的代码
private class CustomAdapter extends ArrayAdapter<HashMap<String, Object>> {
private Context context;
boolean[] checkboxstate;
ViewHolder viewHolder;
ArrayList<HashMap<String, Object>> testdata;
public CustomAdapter(Context context, int textViewResourceId,
ArrayList<HashMap<String, Object>> testdata) {
super(context, textViewResourceId, testdata);
this.context=context;
this.testdata=testdata;
checkboxstate = new boolean[testdata.size()];
}
private class ViewHolder {
TextView txt_product;
ImageView image_available;
ImageView image_product;
TextView txt_available;
EditText quantity;
Button check;
}
@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
View gridView;
if (convertView == null) {
gridView=new View(context);
convertView = inflater.inflate(R.layout.salesdummy, null);
viewHolder = new ViewHolder();
// cache the views
viewHolder.quantity=(EditText)convertView.findViewById(R.id.quantity);
viewHolder.image_product=(ImageView)convertView.findViewById(R.id.image1);
viewHolder.image_available=(ImageView)convertView.findViewById(R.id.imagecheck);
viewHolder.txt_available=(TextView)convertView.findViewById(R.id.txt_available);
viewHolder.check=(Button)convertView.findViewById(R.id.btncheck);
viewHolder.txt_product=(TextView)convertView.findViewById(R.id.product);
// link the cached views to the convertview
convertView.setTag(viewHolder);
} else
viewHolder = (ViewHolder) convertView.getTag();
// set the data to be displayed
viewHolder.txt_product.setText(testdata.get(position).get("MATERIAL").toString());
int photoId=(Integer) testdata.get(position).get("IMAGE");
viewHolder.image_product.setImageDrawable(getResources().getDrawable(photoId));
/* viewHolder.quantity.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
quant=s.toString();
}
});
*/
viewHolder.check.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Log.d("VAlue of string",quant);
int i_quant;
i_quant=Integer.parseInt(quant);
String material=testdata.get(position).get("MATERIAL").toString();
Log.d("Check material",material);
Cursor c=db.GetMaterial(material);
rec_quantity=c.getString(2);
System.out.println("Value of received quantity is" + rec_quantity);
i_rec_quantity=Integer.parseInt(rec_quantity);
if(i_quant>i_rec_quantity)
{
System.out.println("===============Value is greater than stock");
viewHolder.image_available.setBackgroundDrawable(getResources().getDrawable(R.drawable.red));
viewHolder.txt_available.setText("Not Available");
}
else
{
viewHolder.image_available.setBackgroundDrawable(getResources().getDrawable(R.drawable.green));
viewHolder.txt_available.setText("Available");
}
}
});
viewHolder.quantity.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
// TODO Auto-generated method stub
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
quant=s.toString();
}
});
/*
viewHolder.txt_name.setText(testdata.get(position)
.get("NAME").toString());
viewHolder.txt_salesvolume.setText(testdata.get(position)
.get("SALESVOLUME").toString());
viewHolder.txt_overdue.setText(testdata.get(position)
.get("OVERDUE").toString());
viewHolder.txt_outstanding.setText(testdata.get(position)
.get("OUTSTANDING").toString());
viewHolder.txt_creditlimit.setText(testdata.get(position)
.get("CREDIT_LIMIT").toString());
viewHolder.txt_creditutilization.setText(testdata.get(position)
.get("CREDIT_UTILIZATION").toString());
String creditlimit=testdata.get(position).get("CREDIT_LIMIT").toString();
String creditutilized=testdata.get(position).get("CREDIT_UTILIZATION").toString();
*/
/*
String remcom=testdata.get(position).get("CREDIT_UTILIZATION").toString();
Log.d("Remcom value",remcom);
String remcom1=remcom.replace(",","");
int inint=Integer.parseInt(remcom1);
if(inint>150000)
{
viewHolder.txt_creditutilization.setTextColor(Color.RED);
}
*/
// VITAL PART!!! Set the state of the
// CheckBox using the boolean array
// //HAVE OPENED THE BELOW COMMENT AND HAVE DONE THIS TO CHECK
// WHETHER DUPLICATE CHECKS ARE NOT IMPLEMENTED
// return the view to be displayed
return convertView;
}
}