Приклад проходу по результуючому об’єкту Cursor, витягуючи і підсумовуючи стовпці зі значеннями типу float

Question

Accepted Answer

int GOLD_HOARDED_COLUMN = 2;  
 Cursor myGold = myDatabase.query("GoldHoards", null, null, null, null,  
 null, null);  
 float totalHoard = 0f;  
 if (myGold.moveToFirst()) { 
 do { 
 float hoard = myGold.getFloat(GOLD_HOARDED_COLUMN);  
 totalHoard += hoard;  
 } while(myGold.moveToNext()); 
 } 
 float averageHoard = totalHoard / myGold.getCount();

Answer

package com.example.myapplication;  
 public void onCreate(Bundle savedInstanceState){  
 float totalHoard = 0f;  
 if (myGold.moveToFirst()) { 
 do { 
 float hoard = myGold.getFloat(GOLD_HOARDED_COLUMN);  
 totalHoard += hoard;  
 } while(myGold.moveToNext()); 
 } 
 float averageHoard = totalHoard / myGold.getCount();};

Answer

resources> 
 int GOLD_HOARDED_COLUMN = 2;  
 Cursor myGold = myDatabase.query("GoldHoards", null, null, null, null,  
 null, null);  
 float totalHoard = 0f;  
 if (myGold.moveToFirst()) { 
 do {

Answer

int GOLD_HOARDED_COLUMN = 2;  
 Cursor myGold = myDatabase.query("GoldHoards", null, null, null, null,  
 null, null);  
 float totalHoard = 0f;  
 if (myGold.moveToFirst()) { 
 do { 
 android:layout_width=“match_parent” 
 android:text=“Button1”

Answer

import android.app.Activity;  
 Cursor myGold = myDatabase.query("GoldHoards", null, null, null, null,  
 null, null);  
 float totalHoard = 0f;  
 if (myGold.moveToFirst()) { 
 do { 
 float hoard = myGold.getFloat(GOLD_HOARDED_COLUMN);  
 totalHoard += hoard;  
 android:text=“Button1”

Crowdly

Приклад проходу по результуючому об’єкту Cursor, витягуючи і підсумовуючи стовпц...

Want instant access to all verified answers on exam.nuwm.edu.ua?