i am working one shopping cart app. i have activity with cutom toolbar(Actionbar) with textview and imageview. and in activity i have simple listview which display product list. and have adapter class for listview of activity. here i want that from adapter class onclick event of add(+) button i want to change textview value as total number of product count which is in my toolbar.
[i want something like this]
https://drive.google.com/file/d/0B9qgugNyvGRiV2ZrVlp3TUlIM3M/view
i can achive it in activity but dnt know how to get this functionality from adapter class. https://drive.google.com/open?id=0B9qgugNyvGRiUzF3c0hieFpLVTQ
here is my code
adapter code
public class Product_List_Adapter extends BaseAdapter {
Context acontext;
String[] aproductname;
String[] aproduct_unit;
String[] aproduct_discount;
String[] aproduct_previous_price;
String[] aproduct_latest_price;
int[] aproduct_img;
int totalunit=0;
int[] acoupencode;
String product_count;
private static LayoutInflater inflater=null;
public Product_List_Adapter(Context context,String[]productname,String[]product_unit,String[]product_discount,String[]product_previous_price,String[]product_latest_price,int[]product_img,int[] coupencode)
{
acontext=context;
aproductname=productname;
aproduct_unit=product_unit;
aproduct_discount=product_discount;
aproduct_previous_price=product_previous_price;
aproduct_latest_price=product_latest_price;
aproduct_img=product_img;
acoupencode=coupencode;
inflater = ( LayoutInflater )context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return aproductname.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final Holder holder=new Holder();
View rowView;
rowView = inflater.inflate(R.layout.productlist_listview_single_row, null);
View toolbaritme;
toolbaritme = inflater.inflate(R.layout.productlist_listview_single_row, null);
holder.productname =(TextView) rowView.findViewById(R.id.productlist_singlerow_product_title);
holder.product_unit =(TextView) rowView.findViewById(R.id.productlist_singlerow_product_unit);
holder.product_discount =(TextView) rowView.findViewById(R.id.productlist_singlerow_product_discount);
holder.product_previous_price =(TextView) rowView.findViewById(R.id.productlist_singlerow_previous_price);
holder.product_latest_price =(TextView) rowView.findViewById(R.id.productlist_singlerow_latest_price);
holder.product_count=(TextView)rowView.findViewById(R.id.product_count);
holder.product_img=(ImageView) rowView.findViewById(R.id.productlist_singlerow_imgevew);
holder.btn_add=(ImageView)rowView.findViewById(R.id.product_list_singlerow_btn_add);
holder.btn_remove=(ImageView)rowView.findViewById(R.id.product_list_singlerow_btn_remove);
holder.itemcount=(TextView)toolbaritme.findViewById(R.id.itemcount_actionbar);
holder.layout_product_discount =(LinearLayout)rowView.findViewById(R.id.layout_product_discount);
holder.productname.setText(aproductname[position]);
holder.product_unit.setText(aproduct_unit[position]);
holder.product_discount.setText(aproduct_discount[position]);
holder.product_previous_price.setText(aproduct_previous_price[position]);
holder.product_latest_price.setText(aproduct_latest_price[position]);
holder.product_img.setImageResource(aproduct_img[position]);
holder.product_previous_price.setPaintFlags(holder.product_previous_price.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
holder.btn_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
totalunit +=1;
product_count=Integer.toString(totalunit);
holder.product_count.setText(product_count);
holder.itemcount.setText(product_count);
if(holder.product_count.equals("0"))
{
holder.product_count.setText("");
}
}
});
holder.btn_remove.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
if(totalunit==0)
{
Toast.makeText(acontext, "no item in cart ", Toast.LENGTH_SHORT).show();
holder.product_count.setText("");
}
else
{
totalunit -=1;
product_count=Integer.toString(totalunit);
holder.product_count.setText(product_count);
}
if(holder.product_count.equals("0"))
{
holder.product_count.setText("");
}
}
});
rowView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(acontext, "You Clicked "+aproductname[position], Toast.LENGTH_LONG).show();
}
});
if(acoupencode[position]==0)
{
holder.layout_product_discount.setVisibility(View.GONE);
}
else
{
holder.layout_product_discount.setVisibility(View.VISIBLE);
}
holder.product_img.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent myint =new Intent(acontext.getApplicationContext(), Product_view.class);
acontext.startActivity(myint);
}
});
return rowView;
}
public class Holder
{
TextView productname,product_unit,product_discount,product_previous_price,product_latest_price,product_count,itemcount;
ImageView product_img,btn_add,btn_remove;
LinearLayout layout_product_discount;
}
}
Help will appreciated,
Thanks in advance
Use a interface as a callback
public interface Callback
{
public void onAddClick(int totalunitcount);
}
In the adapter
private Callback listener;
public void setListener(Callback listener) {
this.listener = listener;
}
In on AddClick
holder.btn_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
totalunit +=1;
product_count=Integer.toString(totalunit);
holder.product_count.setText(product_count);
holder.itemcount.setText(product_count);
if(holder.product_count.equals("0"))
{
holder.product_count.setText("");
}
// here
if(listener!=null)
{
listener.onAddClick(totalunit);
}
}
});
In the activity
public yourActivity implements Callback
{
@Override
public void onAddClick(int totalunitcount)
{
// update toolbar
}
}
Of course set listener to adapter in activity
adapter.setListener(youractivityname.this);