I am making an app in which i am fetching data using JSON into ListView, and allowing user to view selected item in another form, in singleMenuItem form i have placed a button namely - Add to Cart, here i want whenever user will click on that button, then selected item need to show in View Cart form, then go back to Listview Select an item > show in another activity > again click on Add to Cart button and show all the items selected by user into View Cart Form, i just want to show Item's Title and Cost, those i am fetching into SingleMenuItem form using Intent from ListView Form and now i want to show in View Cart Form like:- add multiple items by action sequence, the problem is I don't know how to update View Cart form every time whenever user click on Add to Cart Button.
Catalogue(List View Activity) Code:-
public class Catalogue extends Activity{
static String URL = "http:/--------/and/menu.json";
static String KEY_CATEGORY = "item";
static final String KEY_TITLE = "title";
static final String KEY_DESCRIPTION = "description";
static final String KEY_COST = "cost";
static final String KEY_THUMB_URL = "imageUri";
ListView list;
LazyAdapter adapter;
/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ArrayList<HashMap<String, String>> itemsList = new ArrayList<HashMap<String, String>>();
list=(ListView)findViewById(R.id.listView1);
adapter=new LazyAdapter(this, itemsList);
list.setAdapter(adapter);
Intent in = getIntent();
KEY_CATEGORY = in.getStringExtra("category");
try{
JSONArray jsonArray = json.getJSONArray(KEY_CATEGORY);
for(int i=0;i < jsonArray.length();i++){
HashMap<String, String> map = new HashMap<String, String>();
JSONObject jsonObject = jsonArray.getJSONObject(i);
map.put("id", String.valueOf(i));
map.put(KEY_TITLE, jsonObject.getString(KEY_TITLE));
map.put(KEY_DESCRIPTION, jsonObject.getString(KEY_DESCRIPTION));
map.put(KEY_COST, jsonObject.getString(KEY_COST));
map.put(KEY_THUMB_URL, jsonObject.getString(KEY_THUMB_URL));
itemsList.add(map);
}
return itemsList;
}catch(JSONException e) {
Log.e("log_tag", "Error parsing data "+e.toString());
}
return null;
}
@Override
protected void onPostExecute(ArrayList<HashMap<String, String>> result) {
list=(ListView)findViewById(R.id.listView1);
adapter=new LazyAdapter(Catalogue.this, itemsList);
list.setAdapter(adapter);
this.progressDialog.dismiss();
list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
HashMap<String, String> map = itemsList.get(position);
Intent in = new Intent(Catalogue.this, SingleMenuItem.class);
in.putExtra(KEY_TITLE, map.get(KEY_TITLE));
in.putExtra(KEY_DESCRIPTION, map.get(KEY_DESCRIPTION));
in.putExtra(KEY_THUMB_URL, map.get(KEY_THUMB_URL));
in.putExtra(KEY_COST, map.get(KEY_COST));
startActivity(in);
}
});
ImageButton viewShoppingCart = (ImageButton) findViewById(R.id.ButtonViewCart);
viewShoppingCart.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent in = new Intent
(Catalogue.this, FinalOrder.class);
startActivity(in);
}
});
} }}
SingleMenuItem Activity Code
public class SingleMenuItem extends Activity{
static final String KEY_TITLE = "title";
static final String KEY_COST = "cost";
static final String KEY_THUMB_URL = "imageUri";
private EditText edit_qty_code;
private TextView txt_total;
private TextView text_cost_code;
private double itemamount = 0;
private double itemquantity = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.single);
Intent in = getIntent();
String title = in.getStringExtra(KEY_TITLE);
String thumb_url = in.getStringExtra(KEY_THUMB_URL);
final String cost = in.getStringExtra(KEY_COST);
ImageLoader imageLoader = new ImageLoader(getApplicationContext());
ImageView imgv = (ImageView) findViewById(R.id.single_thumb);
TextView txttitle = (TextView) findViewById(R.id.single_title);
TextView txtcost = (TextView) findViewById(R.id.single_cost);
TextView txtheader = (TextView) findViewById(R.id.actionbar);
txttitle.setText(title);
txtheader.setText(title);
txtcost.setText(cost);
imageLoader.DisplayImage(thumb_url, imgv);
ImageButton addToCartButton = (ImageButton) findViewById(R.id.img_add);
addToCartButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent in = new Intent
(SingleMenuItem.this, FinalOrder.class);
in.putExtra(KEY_TITLE, getIntent().getStringExtra(KEY_TITLE));
in.putExtra(KEY_COST, getIntent().getStringExtra(KEY_COST));
startActivity(in);
// Close the activity
finish();
}
});
}}
ViewCart Activity Code:-
public class FinalOrder extends Activity
{
static final String KEY_TITLE = "title";
static final String KEY_COST = "cost";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view);
Intent in = getIntent();
String title1 = in.getStringExtra(KEY_TITLE);
String cost1 = in.getStringExtra(KEY_COST);
TextView txttitle1 = (TextView) findViewById(R.id.item_name);
TextView txtcost1 = (TextView) findViewById(R.id.item_cost);
txttitle1.setText(title1);
txtcost1.setText(cost1);
}
}
