英文:
Values From Cloud Firestore Duplicates During Sum Operation
问题
以下是您要翻译的内容：
我是Android开发的新手，想要创建一个Android卡路里计算器应用程序，食物的卡路里存储在云Firestore中。这个卡路里计数器由5个值组成（早餐、午餐、晚餐、消耗的卡路里和每日目标）。在为餐点分配卡路里之后，我想将它们累加到变量“消耗的卡路里”中，该变量是三餐（早餐、午餐和晚餐）的卡路里总和。每日目标是（每日目标 - 消耗的卡路里）。
当我添加一个食物，比如苹果=52千卡时，一切正常，但是当我再添加一个苹果时，每日目标变成了每日目标-156，而不是104，它从插入的食物中取值，并将其与所选的卡路里相加。
我的食物插入代码如下：
public void MealCalories(DocumentReference reference, int calories, TextView textView, String Meal) {
reference.get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
@Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
int meal = documentSnapshot.getLong(Meal).intValue();
meal = meal + calories;
AddData(Meal, meal, reference);
textView.setText(String.valueOf(meal));
ConsumedCalories(calories);
}
});
}
public void ConsumedCalories(int calories) {
MealRef.get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
@Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
firebaseUser = FirebaseAuth.getInstance().getCurrentUser();
int breakfast = documentSnapshot.getLong("Breakfast: " + uid).intValue();
int lunch = documentSnapshot.getLong("Lunch: " + uid).intValue();
int dinner = documentSnapshot.getLong("Dinner: " + uid).intValue();
int consumed = documentSnapshot.getLong("Consumed Calories: " +uid).intValue();
consumed = breakfast + lunch + dinner;
MealRef.update("Consumed Calories: " + uid, consumed);
daily_goal.setText(String.valueOf(consumed));
int daily_calories = documentSnapshot.getLong("Daily Goal: " + uid).intValue();
daily_calories = daily_calories - consumed;
MealRef.update("Daily Goal:"+ uid,daily_calories);
}
});
}
每日目标应该是1896。
英文:
I am new to android developement and I want to create android calorie calculator app, calories of food are stored inside cloud firestore. This calorie counter is made of 5 value (breakfast,lunch,dinner,consumed_calories,and daily goal). After Calories are assigned to meal, I want to sum them into variable "consumed calories" which is the sum of 3 meals (breakfast,lunch and dinner). Daily Goal is (Daily Goal - Consumed Calories).
When I add one food eg. apple = 52 kcals, everything works fine, but when I add one more apple Daily Goal is = Daily Goal - 156 instead of 104, It takes value from inserted food and sum it with choosen calories.
My Code For Food Insert:
public void MealCalories(DocumentReference reference, int calories, TextView textView, String Meal) {
reference.get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
@Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
int meal = documentSnapshot.getLong(Meal).intValue();
meal = meal + calories;
AddData(Meal, meal, reference);
textView.setText(String.valueOf(meal));
ConsumedCalories(calories);
}
});
}
public void ConsumedCalories(int calories) {
MealRef.get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
@Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
firebaseUser = FirebaseAuth.getInstance().getCurrentUser();
int breakfast = documentSnapshot.getLong("Breakfast: " + uid).intValue();
int lunch = documentSnapshot.getLong("Lunch: " + uid).intValue();
int dinner = documentSnapshot.getLong("Dinner: " + uid).intValue();
int consumed = documentSnapshot.getLong("Consumed Calories: " +uid).intValue();
consumed = breakfast + lunch + dinner ;
MealRef.update("Consumed Calories: " + uid, consumed);
daily_goal.setText(String.valueOf(consumed));
int daily_calories = documentSnapshot.getLong("Daily Goal: " + uid).intValue();
daily_calories = daily_calories - consumed;
MealRef.update("Daily Goal: "+ uid,daily_calories);
}
});
}
Daily Goal was supposed to be 1896.
答案1
得分: 0
看起来你的代码正在从快照中获取已消耗的值，然后立即进行覆盖：
int consumed = documentSnapshot.getLong("Consumed Calories: " + uid).intValue();
consumed = breakfast + lunch + dinner;
这是有意为之吗？应该改成 consume += breakfast ... 这样吗？
英文:
It appears that your code is fetching the consumed value from the snapshot, and then immediately overwriting it:
int consumed = documentSnapshot.getLong("Consumed Calories: " +uid).intValue();
consumed = breakfast + lunch + dinner ;
Is this intentional? Should it be consume += breakfast ... etc?
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