如何在自定义操作栏上显示数量总数？
我有一个活动类，其中包括自定义列表视图（名称，数量，加号按钮，减号按钮等）和自定义操作栏。如何在自定义操作栏上显示计数（数量）？< / p>
提前致谢。
活动类
package com.firstchoicefood.phpexpertgroup.firstchoicefoodin;
import android.app.ActionBar;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.adapter.CartAdapter;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.CartItem;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.ListModel;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.Product;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.Product2;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.json.JSONfunctions;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Vector;
public class DetaisRESTActivity extends Activity implements CartAdapter.OnUpdateTotal {
String messagevaluename,valueid,valueid1,valuename,pos;
public String countString=null;
String nameofsubmenu;
public int count=0;
public String message=null;
public String message1=null;
JSONObject jsonobject;
JSONArray jsonarray;
// Declare Variables
String rastaurantname1212;
String success;
String subtotal1;
String disCupnPrice1;
CartAdapter cart;
String resid1;
ListView listview;
public TextView mTitleTextView;
public ImageButton imageButton;
ProgressDialog mProgressDialog;
ArrayList<CartItem> arraylist;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detais_rest);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#ff0000")));
LayoutInflater mInflater = LayoutInflater.from(this);
View mCustomView = mInflater.inflate(R.layout.titlebar, null);
mTitleTextView = (TextView) mCustomView.findViewById(R.id.txtTotalProducts);
mTitleTextView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), "Refresh Clicked!",
Toast.LENGTH_LONG).show();
Intent i = new Intent(DetaisRESTActivity.this, TotalPriceActivity.class);
i.putExtra("count", pos);
i.putExtra("submenu", message);
i.putExtra("ruppees", message1);
i.putExtra("messagevaluename", messagevaluename);
i.putExtra("id", nameofsubmenu);
startActivity(i);
}
});
actionBar.setCustomView(mCustomView);
actionBar.setDisplayShowCustomEnabled(true);
// Locate the TextViews in singleitemview.xml
TextView txtrestaurantname = (TextView) findViewById(R.id.rastaurantnamesingledetails);
TextView txtrestaurantcuisine = (TextView) findViewById(R.id.rastaurantcuisinesingledetails);
// Locate the ImageView in singleitemview.xml
ImageView imgflag = (ImageView) findViewById(R.id.flagdetails);
// Set results to the TextViews
txtrestaurantname.setText(getIntent().getExtras().getString("rastaurantname11"));
txtrestaurantcuisine.setText(getIntent().getExtras().getString("rastaurantcuisine11"));
rastaurantname1212=getIntent().getExtras().getString("rastaurantname11");
resid1=getIntent().getExtras().getString("resid11");
// Capture position and set results to the ImageView
// Passes flag images URL into ImageLoader.clas
Intent intent = getIntent();
// get the extra value
valuename = intent.getStringExtra("restaurantmenuname");
valueid = intent.getStringExtra("restaurantmenunameid");
valueid1 = intent.getStringExtra("idsrestaurantMenuId5");
Log.i("valueid",""+valueid);
Log.i("valueid1",""+valueid1);
new DownloadJSON().execute();
}
// DownloadJSON AsyncTask
private class DownloadJSON extends AsyncTask<String,Integer,JSONObject> {
@Override
protected void onPreExecute() {
super.onPreExecute();
// Create a progressdialog
mProgressDialog = new ProgressDialog(DetaisRESTActivity.this);
// Set progressdialog title
// Set progressdialog message
mProgressDialog.setMessage("Loading...");
mProgressDialog.setIndeterminate(false);
// Show progressdialog
mProgressDialog.show();
Toast.makeText(DetaisRESTActivity.this, "Successs", Toast.LENGTH_LONG).show();
}
@Override
protected JSONObject doInBackground(String... params) {
// Create an array
// Retrieve JSON Objects from the given URL address
// jsonobject = JSONfunctions.getJSONfromURL(");
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(
"http://firstchoicefood.in/fcfapiphpexpert/phpexpert_restaurantMenuItem.php?r=" + URLEncoder.encode(valuename) + "&resid=" + URLEncoder.encode(valueid1) + "&RestaurantCategoryID=" + URLEncoder.encode(valueid) + "");
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
String response = EntityUtils.toString(httpEntity);
return new JSONObject(response);
} catch (Exception e) {
}
return null;
}
@Override
protected void onPostExecute(JSONObject args) {
// Locate the listview in listview_main.xml
super.onPostExecute(args);
try {
JSONArray jsonarray = args.getJSONArray("RestaurantMenItems");
Log.i("1234", "" + jsonarray);
arraylist = new ArrayList<CartItem>();
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject jsonObject = jsonarray.getJSONObject(i);
CartItem c=new CartItem(jsonObject.getInt("id"),jsonObject.getString("RestaurantPizzaItemName"),jsonObject.getInt("RestaurantPizzaItemPrice"));
arraylist.add(c);
}
} catch (JSONException e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
listview = (ListView) findViewById(R.id.listViewSINGLE);
cart=new CartAdapter(arraylist,DetaisRESTActivity.this,DetaisRESTActivity.this);
listview.setAdapter(cart);
getTotalProducts(arraylist);
// Close the progressdialog
mProgressDialog.dismiss();
}
}
public int getTotalProducts(ArrayList<CartItem> arrProducts){
int total=0;
Log.i("arrProducts",""+arrProducts.size());
for (int i = 0; i <arrProducts.size(); i++) {
total+=arrProducts.get(i).getQuantity();
}
Log.i("total2",""+total);
return total;
}
@Override
public void execute(ArrayList<CartItem> arrs) {
mTitleTextView.setText(getTotalProducts(arrs) + "");
// CartItem ii=new CartItem(1,"",1);
}
}
适配器类
package com.firstchoicefood.phpexpertgroup.firstchoicefoodin.adapter;
import java.util.ArrayList;
import android.content.Context;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.CartItem;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.R;
public class CartAdapter extends BaseAdapter {
private LayoutInflater inflater;
private ArrayList<CartItem> arrs;
private OnUpdateTotal onUpdateTotal;
public CartAdapter(ArrayList<CartItem> arrs, Context context,
OnUpdateTotal updateTotal) {
this.arrs = arrs;
inflater = LayoutInflater.from(context);
onUpdateTotal = updateTotal;
}
@Override
public int getCount() {
return arrs.size();
}
@Override
public CartItem getItem(int position) {
return arrs.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View v, ViewGroup parent) {
if (v == null)
v = inflater.inflate(R.layout.item_cart, null);
TextView txtName, txtPrice, txtCatagory;
final EditText edtQuantity;
Button btnPlus, btnMinus;
btnPlus = (Button) v.findViewById(R.id.btnPlus);
btnMinus = (Button) v.findViewById(R.id.btnMinus);
txtName = (TextView) v.findViewById(R.id.txtName);
txtPrice = (TextView) v.findViewById(R.id.txtPrice);
txtCatagory = (TextView) v.findViewById(R.id.txtCatagoryID);
edtQuantity = (EditText) v.findViewById(R.id.edtQuantity);
txtName.setText(arrs.get(position).getName());
txtPrice.setText(arrs.get(position).getPrice() + "");
txtCatagory.setText(arrs.get(position).getCatogoryID());
edtQuantity.setText(arrs.get(position).getQuantity() + "");
edtQuantity.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
// TODO Auto-generated method stub
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
try {
arrs.get(position).setQuantity(
Integer.parseInt(s.toString()));
// onUpdateTotal.execute(arrs);
} catch (Exception ee) {
}
}
});
btnPlus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int current = arrs.get(position).getQuantity();
Log.i("position",""+position);
Log.i("current",""+current);
edtQuantity.setText(++current+"");
}
});
btnMinus.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
int current = arrs.get(position).getQuantity();
edtQuantity.setText(--current+"");
}
});
return v;
}
public interface OnUpdateTotal {
public void execute(ArrayList<CartItem> arrs);
}
}
模型java类
package com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean;
public class CartItem {
private int id;
private String name;
private float price;
private int quantity;
private String catogoryID;
public CartItem(int id, String name, float price, int quantity,
String catogoryID) {
this.id = id;
this.name = name;
this.price = price;
this.quantity = quantity;
this.catogoryID = catogoryID;
}
public CartItem(int id, String name, float price, int quantity) {
this.id = id;
this.name = name;
this.price = price;
this.quantity = quantity;
}
public CartItem(int id, String name, float price) {
this.id = id;
this.name = name;
this.price = price;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public String getCatogoryID() {
return catogoryID;
}
public void setCatogoryID(String catogoryID) {
this.catogoryID = catogoryID;
}
}