如何将数组的更新值保存回Firestore数据库? [英] How to save the updated value of an array back to the firestore database?
问题描述
for (QueryDocumentSnapshot snapshot : Objects.requireNonNull(task.getResult())) {
String value1 = snapshot.getString("QuestionName");
q_tv1.setText("Question: "+value1);
ArrayList<String> description = (ArrayList<String>) snapshot.get("Description");
Log.d(Tag,"output for des: "+description);
List<String> noOfOptions = (List<String>) snapshot.get("Options");
Log.d(Tag,"output for option: "+noOfOptions);
ArrayList<String> finalCount=(ArrayList<String>) snapshot.get("CountValue");
int size=noOfOptions.size();
Log.d(Tag,"size: "+finalCount);
for(i=0;i<=size-1;i++)
{
String op=noOfOptions.get(i);
String n=finalCount.get(i);
CardView cardview=new CardView(PublicVote.this);
LayoutParams layoutparams = new LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.WRAP_CONTENT
);
LayoutParams layoutparams2 = new LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.WRAP_CONTENT
);
cardview.setLayoutParams(layoutparams);
cardview.setRadius(25);
layoutparams.setMargins(10,10,10,10);
layoutparams2.setMargins(10,100,100,100);
cardview.setPadding(25, 25, 25, 25);
cardview.setCardBackgroundColor(Color.TRANSPARENT);
cardview.setBackgroundTintList(ColorStateList.valueOf(Color.YELLOW));
cardview.setMaxCardElevation(30);
cardview.setMaxCardElevation(6);
TextView textview = new TextView(PublicVote.this);
textview.setLayoutParams(layoutparams);
textview.append("o " +noOfOptions.get(i));
textview.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 25);
textview.setTextColor(Color.BLACK);
textview.setPadding(25,25,25,25);
textview.setGravity(Gravity.LEFT);
textview.setLayoutParams(layoutparams);
TextView textview1 = new TextView(PublicVote.this);
textview1.setLayoutParams(layoutparams);
textview1.append("Description: "+description.get(i));
textview1.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 25);
textview1.setTextColor(Color.BLACK);
textview1.setPadding(25,25,25,25);
textview1.setGravity(Gravity.LEFT);
textview1.setLayoutParams(layoutparams2);
cardview.addView(textview);
cardview.addView(textview1);
l1.addView(cardview);
cardview.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Toast.makeText(PublicVote.this, n, Toast.LENGTH_SHORT).show();
n1 = Integer.parseInt(String.valueOf(n));
n1 = n1 + 1;
Log.d(Tag,"i->>: "+n1);
}
});
}
}
这是我上面的代码，我的n1是countValue，每次用户单击它不断增加的cardview时都会更新.现在我想将这个增加的值保存起来，即countValue(此处为n1)返回到下面给出的数据库中.
This is my code above here my n1 is the countValue which is updated everytime the user clicks the cardview it keeps on incrementing. Now I want to save this incremented value i.e. the countValue (n1 here)back to the database which is given below.
现在，这里的选项121和122分别具有计数值10和5，当单击任一选项时，计数值将增加1，可以说单击121，因此新值是11和5(保持不变).这11和5需要更新回数据库，对此需要帮助！
Now here the options 121 and 122 have count value 10 and 5 respectively which gets incremented by 1 when any one option is clicked, lets say 121 is clicked so new value is 11 and 5(remains the same). This 11 and 5 needs to be updated back to the database, need help with this!
推荐答案
哼，我建议在XML布局中设置设置，而不是在类中进行设置，这样更易于可视化.如果我理解应该是这样，除非是另一个变量.
Hum, I suggest to set the settings in the XML layout instead of the setting in the class, it's more easy to visualize. If I understood should be like this, unless is another variable.
如果变量n1正在计数数字
If the variable n1 is counting the numbers
Log.d(Tag，"n1->> ::" + n1);
Log.d(Tag,"n1->>: "+ n1);
尝试执行以下操作:
Log.d(Tag，"n1->">:"+(n1 + 1));
Log.d(Tag,"n1->>: "+ (n1 + 1));
或在操作之外设置数字
n1 = n1 +1;
n1 = n1 + 1;
这样，他们每次点击都会设置数字+1，尝试执行我对xml中的设置所说的话.
This way every time they click on is going to set the number +1, try to do what i said about the settings in the xml.
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