计算总量

enter image description here 计算总量

我希望当加减按钮点击listview行项目计算总金额和更新的变化总有什么可以帮我出这个问题的提前

谢谢

来源

2014-10-31 Spry Techies

请向我们提供您的代码块你尝试过什么，你面临 – Pratik 2014-10-31 11:24:25

问题我所做的是什么，我都要求从定制适配器上的加号按钮点击，但它的功能更新时，活动从午餐切换到早餐，我想在点击@ PRATIK – 2014-10-31 11:27:03

的时间来更新@Pratik请给一些想法，以更新 – 2014-10-31 11:57:34

我已经解决了这个您只要致电从父方法customadapter其执行你的总计算

喜欢这个((ParentClass) context).TotalCalculationfunctionToRun(); 从加号或减号按钮分别单击

来源

2014-11-01 12:20:47

谢谢你abhishek – 2014-11-01 12:21:28

-1

尝试这样可以帮助你，

private int getTotal(){ 
      private int totalamount = 0; 
      for(int i = 1; i < list.getCount(); i++){ 
       View view = list.getAdapter().getView(i, null, list); 
       TextView txt = (TextView) view.findViewById(R.id.yourid); 
       int amount = Integer.paserInt(txt.getText().toString()) 
       totalamount += amount; 
      } 
      return totalamount; 
    }

来源

2014-10-31 11:27:47

但它如何帮助更新总在点击的时候加或减号 – 2014-10-31 11:29:36

点击该按钮 – 2014-10-31 11:30:26

该按钮是在列表视图内 – 2014-10-31 11:31:04

我有一个解决方案的自定义适配器，可能是它可以让你帮助

<TextView 
    android:id="@+id/cartTotal" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentRight="true" 
    android:layout_alignParentTop="true" 
    android:text="RS 0.00" 
    android:textAppearance="?android:attr/textAppearanceMedium" 
    android:textStyle="bold" /> 

<TextView 
    android:id="@+id/textView2" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:layout_toLeftOf="@+id/cartTotal" 
    android:text="Total: " 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 


<ListView 
    android:id="@+id/listview" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:layout_below="@+id/textView2" />`

给定屏幕的适配器的设计布局

<TextView 
    android:id="@+id/tiem_name" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginLeft="20dp" 
    android:layout_marginTop="10dp" 
    android:text="TextView" 
    android:textSize="20dp" /> 

<TextView 
    android:id="@+id/flag" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginLeft="20dp" 
    android:layout_marginTop="10dp" 
    android:text="TextView" 
    android:textSize="20dp" /> 

<TextView 

    android:id="@+id/eachPrice" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:layout_centerHorizontal="true" 
    android:layout_marginLeft="20dp" 
    android:layout_marginTop="10dp" 
    android:text="120.0" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<TextView 
    android:id="@+id/ext" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginLeft="20dp" 
    android:layout_marginTop="10dp" 
    android:text="Index Total Price" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<RelativeLayout 
    android:layout_width="match_parent" 
    android:layout_height="100dp" 
    android:layout_margin="20dp" 
    android:orientation="horizontal"> 

    <EditText 
     android:id="@+id/editText2" 
     android:layout_width="200dp" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="28dp" 
     android:hint="Qty" /> 

    <Button 
     android:id="@+id/plus" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignBaseline="@+id/minus" 
     android:layout_alignBottom="@+id/minus" 
     android:layout_marginEnd="18dp" 
     android:layout_marginRight="18dp" 
     android:layout_toLeftOf="@+id/minus" 
     android:layout_toStartOf="@+id/minus" 
     android:text="+" /> 

    <Button 
     android:id="@+id/minus" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignBaseline="@+id/editText2" 
     android:layout_alignBottom="@+id/editText2" 
     android:layout_alignParentEnd="true" 
     android:layout_alignParentRight="true" 
     android:text="-" /> 

</RelativeLayout>

模型项

public class CartItem { 

String name; 
String flag; 
int UserQty; 
double ProductPrice; 
double ProductSalePrice; 
private Double ext = 0.00; 

public Double getExt() { 
    return ext; 
} 

public void setExt(Double ext) { 
    this.ext = ext; 
} 

public double getProductSalePrice() { 
    return ProductSalePrice; 
} 

public void setProductSalePrice(double productSalePrice) { 
    ProductSalePrice = productSalePrice; 
} 

public double getProductPrice() { 
    return ProductPrice; 
} 

public void setProductPrice(double productPrice) { 
    ProductPrice = productPrice; 
} 

public int getUserQty() { 
    return UserQty; 
} 

public void setUserQty(int userQty) { 
    UserQty = userQty; 
} 

public String getName() { 
    return name; 
} 

public void setName(String name) { 
    this.name = name; 
} 

public String getFlag() { 
    return flag; 
} 

public void setFlag(String flag) { 
    this.flag = flag; 
}

}

**Main Activity**

公共类MainActivity延伸活动{ 字符串URL = “http://139.59.43.252/cnsgoCash/api/ws/controller/?access=true&action=get_category_by_product_list&id=5”; ProgressDialog PD; 按钮付款;

private ExpandListAdapter ExpAdapter; 
private ExpandableListView ExpandList; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    payment=(Button)findViewById(R.id.payment); 
    ExpandList = (ExpandableListView) findViewById(R.id.expandableListView); 
    PD = new ProgressDialog(this); 
    PD.setMessage("Loading....."); 
    PD.setCancelable(false); 
    makejsonobjreq(); 

/* Click*/ 
    payment.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
       Intent in =new Intent(MainActivity.this,AddedItemActivity.class); 
       startActivity(in); 


     } 
    }); 
    ExpandList.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     @Override 
     public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { 

     } 
    }); 

} 

private void makejsonobjreq() { 
    PD.show(); 
    JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(url, null, new Response.Listener<JSONObject>() { 
     @Override 
     public void onResponse(JSONObject response) { 
      System.out.println("Json String :" + String.valueOf(response)); 
      Log.e("RES", String.valueOf(response)); 
      ArrayList<Group> list = new ArrayList<Group>(); 
      ArrayList<Child> ch_list; 
      try { 
       //Iterator<String> key = response.keys(); 
       JSONArray jsonArray=response.getJSONArray("data"); 

       for(int i=0;i<jsonArray.length();i++){ 
        JSONObject object= jsonArray.getJSONObject(i) ; 
        String k = object.getString("categoryName"); 

        Log.e("Parent","hello"+k); 
        Group gru = new Group(); 
        gru.setName(k); 
        ch_list = new ArrayList<Child>(); 
        JSONArray ja = object.getJSONArray("productdetails"); 
        for (int j = 0; j < ja.length(); j++) { 
         JSONObject jo = ja.getJSONObject(j); 
         Child ch = new Child(); 
         //Log.e("Child","hello"+jo.getString("productName")); 
         ch.setName(jo.getString("productCode")); 
         ch.setFlag(jo.getString("productName")); 
         ch.setUserQty(jo.getString("quantity")); 
         ch.setProductPrice(jo.getString("sellPrice")); 
         ch_list.add(ch); 
        } // child for loop end 
        gru.setItems(ch_list); 
        list.add(gru); 
       } 

       ExpAdapter = new ExpandListAdapter(MainActivity.this, list); 
       ExpandList.setAdapter(ExpAdapter); 
       PD.dismiss(); 

      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 
     } 
    }, new Response.ErrorListener() { 
     @Override 
     public void onErrorResponse(VolleyError error) { 
     } 
    }); 
    RequestQueue requestQueue = Volley.newRequestQueue(this); 
    requestQueue.add(jsonObjectRequest); 
}

}

来源

2017-07-06 09:31:24

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