radiogroup未给出确切的结果

ut6juiuv  于 2021-08-20  发布在  Java
关注(0)|答案(1)|浏览(305)

已阅读：
recyclerview中的radiogroup
在listview中显示radiogroup
recyclerview中的radiogroup不正确
你好
我正在使用recylerview创建一个mcq应用程序，其中我有问题、4个单选按钮和提交按钮。我的程序在提交时也有正确的应答。单击单选按钮并单击提交按钮，如果答案正确，我会将正确的单选按钮背景更改为绿色和红色，表示回答错误
现在的问题是，有多个问题和多个提交按钮，当我点击第一个问题正确单选按钮时，它会改变其背景红色，所有问题相同，但最后一个除外。
对于最后的问题，它给出了正确和错误答案的正确背景
关于我的问题：https://ibb.co/lzqsvnz 在gif中，第一个问题ww2是正确的，但代码将其颜色更改为红色，第二个问题是最后一个问题给出了正确的结果
我的布局代码：

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     xmlns:app="http://schemas.android.com/apk/res-auto"
  4.     android:layout_marginTop="10dp"
  5.     android:layout_width="match_parent"
  6.     android:background="@color/white"
  7.     android:layout_height="wrap_content">
  9.     <RelativeLayout
  10.         android:background="@color/white"
  11.         android:layout_width="match_parent"
  12.         android:layout_height="wrap_content">
  14.         <LinearLayout
  15.             android:weightSum="2"
  16.             android:id="@+id/newlinear1"
  17.             android:layout_width="match_parent"
  18.             android:layout_height="wrap_content"
  19.             android:orientation="vertical">
  21.             <TextView
  22.                 android:layout_weight="1"
  23.                 android:id="@+id/question"
  24.                 android:layout_width="match_parent"
  25.                 android:layout_height="wrap_content"
  26.                 android:text="@string/question"
  27.                 android:textColor="@color/black"
  28.                 android:textAllCaps="true"
  29.                 android:textAlignment="center"
  30.                 android:textStyle="bold">
  32.             </TextView>
  34.             <ImageView
  35.                 android:layout_gravity="center"
  36.                 android:visibility="gone"
  37.                 android:src="@mipmap/ic_launcher_round"
  38.                 android:layout_weight="1"
  39.                 android:id="@+id/QuestionImage"
  40.                 android:layout_width="match_parent"
  41.                 android:layout_height="300dp">
  43.             </ImageView>
  45.         </LinearLayout>
  47.         <LinearLayout
  48.             android:background="@drawable/linear"
  49.             android:id="@+id/linear2"
  50.             android:layout_marginTop="10dp"
  51.             android:layout_below="@id/newlinear1"
  52.             android:layout_width="match_parent"
  53.             android:layout_margin="40dp"
  54.             android:layout_height="wrap_content"
  55.             android:orientation="vertical"
  56.             android:gravity="center">
  58.             <RadioGroup
  59.                 android:id="@+id/radioPostGroup"
  60.                 android:layout_width="match_parent"
  61.                 android:layout_height="wrap_content">
  63.                 <RadioButton
  64.                     android:layout_marginTop="25dp"
  65.                     android:textColor="@color/black"
  66.                     android:layout_width="match_parent"
  67.                     android:layout_height="wrap_content"
  68.                     android:text="@string/answer1"
  69.                     android:id="@+id/radioAnswer1">
  71.                 </RadioButton>
  72.                 <RadioButton
  73.                     android:layout_marginTop="25dp"
  74.                     android:textColor="@color/black"
  75.                     android:layout_width="match_parent"
  76.                     android:layout_height="wrap_content"
  77.                     android:text="@string/answer2"
  78.                     android:id="@+id/radioAnswer2">
  80.                 </RadioButton>
  81.                 <RadioButton
  82.                     android:layout_marginTop="25dp"
  83.                     android:textColor="@color/black"
  84.                     android:layout_width="match_parent"
  85.                     android:layout_height="wrap_content"
  86.                     android:text="@string/answer3"
  87.                     android:id="@+id/radioAnswer3">
  89.                 </RadioButton>
  90.                 <RadioButton
  91.                     android:layout_marginTop="25dp"
  92.                     android:textColor="@color/black"
  93.                     android:layout_width="match_parent"
  94.                     android:layout_height="wrap_content"
  95.                     android:text="@string/answer4"
  96.                     android:id="@+id/radioAnswer4">
  98.                 </RadioButton>
  100.             </RadioGroup>
  102.         </LinearLayout>
  104.         <LinearLayout
  105.             android:id="@+id/linear3"
  106.             android:layout_below="@id/linear2"
  107.             android:orientation="horizontal"
  108.             android:layout_centerInParent="true"
  109.             android:layout_width="wrap_content"
  110.             android:layout_height="wrap_content">
  112.             <Button
  113.                 android:id="@+id/submitAnswer"
  114.                 android:layout_width="wrap_content"
  115.                 android:layout_height="wrap_content"
  116.                 android:text="Submit">
  118.             </Button>
  119. <!--            <View-->
  120. <!--                -->
  121. <!--                android:layout_width="fill_parent"-->
  122. <!--                android:layout_weight="2"-->
  123. <!--                android:layout_height="10dp"-->
  124. <!--                android:layout_marginTop="0.5dp"-->
  125. <!--                android:background="@color/purple"/>-->
  127.         </LinearLayout>
  129.         <LinearLayout
  130.             android:id="@+id/mylinear4"
  131.             android:layout_below="@id/linear3"
  132.             android:layout_width="match_parent"
  133.             android:layout_height="wrap_content"
  134.             android:orientation="horizontal"
  135.             >
  137.             <com.like.LikeButton
  138.                 android:layout_weight="1"
  139.                 app:icon_type="heart"
  140.                 app:icon_size="10dp"
  141.                 android:id="@+id/myheart"
  142.                 android:layout_width="wrap_content"
  143.                 android:layout_height="wrap_content">
  145.             </com.like.LikeButton>
  147.             <com.like.LikeButton
  148.                 android:layout_weight="1"
  149.                 app:icon_type="thumb"
  150.                 app:icon_size="10dp"
  151.                 android:id="@+id/mythumb"
  152.                 android:layout_width="wrap_content"
  153.                 android:layout_height="wrap_content">
  155.             </com.like.LikeButton>
  157.             <com.like.LikeButton
  158.                 android:layout_weight="1"
  159.                 app:icon_type="star"
  160.                 app:icon_size="10dp"
  161.                 android:id="@+id/myStar"
  162.                 android:layout_width="wrap_content"
  163.                 android:layout_height="wrap_content">
  165.             </com.like.LikeButton>
  167.         </LinearLayout>
  168.         <View
  169.             android:layout_below="@+id/mylinear4"
  170.             android:layout_width="match_parent"
  171.             android:layout_height="1dp"
  172.             android:background="@color/black">
  174.         </View>
  176.     </RelativeLayout>
  178.     </RelativeLayout>

我的回收视图：

  1. package com.example.mcqapp.activities.Adapters;
  3. import android.content.Context;
  4. import android.graphics.Color;
  5. import android.util.Log;
  6. import android.view.LayoutInflater;
  7. import android.view.View;
  8. import android.view.ViewGroup;
  9. import android.widget.Button;
  10. import android.widget.ImageView;
  11. import android.widget.RadioButton;
  12. import android.widget.RadioGroup;
  13. import android.widget.TextView;
  14. import android.widget.Toast;
  16. import androidx.annotation.NonNull;
  17. import androidx.recyclerview.widget.RecyclerView;
  19. import com.bumptech.glide.Glide;
  20. import com.example.mcqapp.R;
  21. import com.example.mcqapp.activities.Models.RequestDataModel;
  22. import com.example.mcqapp.activities.Models.RetrieveModel;
  23. import com.example.mcqapp.activities.forms.QuestionData;
  24. import com.google.firebase.auth.FirebaseAuth;
  25. import com.google.firebase.auth.FirebaseUser;
  26. import com.google.firebase.database.DataSnapshot;
  27. import com.google.firebase.database.DatabaseError;
  28. import com.google.firebase.database.DatabaseReference;
  29. import com.google.firebase.database.FirebaseDatabase;
  30. import com.google.firebase.database.ValueEventListener;
  31. import com.like.LikeButton;
  32. import com.like.OnLikeListener;
  34. import org.jetbrains.annotations.NotNull;
  35. import org.w3c.dom.Text;
  37. import java.util.HashMap;
  38. import java.util.List;
  40. public class finalAdapter extends RecyclerView.Adapter<finalAdapter.MyHolder> {
  41.     private List<QuestionData> dataset;
  42.     private Context context;
  43.     private DatabaseReference heartReference;
  44.     private int counter = 0;
  45.     boolean testCick = false;
  46.     private RadioButton radioButton;
  47.     private String CorrectAnswer;
  49.     public finalAdapter(List<QuestionData> dataset,Context context){
  50.         this.dataset = dataset;
  51.         this.context = context;
  53.     }
  55.     @NotNull
  56.     @Override
  57.     public MyHolder onCreateViewHolder(@NonNull @NotNull ViewGroup parent, int viewType) {
  58.         LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
  59.         View view = layoutInflater.inflate(R.layout.recyclerquestions,parent,false);
  61.         MyHolder myHolder = new MyHolder(view);
  63.         return myHolder;
  64.     }
  66.     @Override
  67.     public void onBindViewHolder(@NonNull @NotNull finalAdapter.MyHolder holder, int position) {
  68.         holder.question.setText(dataset.get(position).getQuestion());
  69.         holder.radioButton1.setText(dataset.get(position).getAnswer1());
  70.         holder.radioButton2.setText(dataset.get(position).getAnswer2());
  71.         holder.radioButton3.setText(dataset.get(position).getAnswer3());
  72.         holder.radioButton4.setText(dataset.get(position).getAnswer4());
  74.         CorrectAnswer  = dataset.get(position).getCorrectAnswer();
  76.         String im = dataset.get(position).getImageLink();
  77.         if (im != null){
  78.             holder.imageView.setVisibility(View.VISIBLE);
  79.             Glide.with(context).load(dataset.get(position).getImageLink()).into(holder.imageView);
  80.         }
  82.         FirebaseUser firebaseUser = FirebaseAuth.getInstance().getCurrentUser();
  83.         String userID = firebaseUser.getUid();
  84.         Log.d("userid", "onBindViewHolder: "+ userID);
  86.         String posKey = dataset.get(position).getKey();
  88. //        final FirebaseDatabase mFirebaseDatabase = FirebaseDatabase.getInstance().getReference("likes");
  90. //        final DatabaseReference databaseReference = mFirebaseDatabase.getReference("Questions").child(dataset.get(position).getGroup()).child(dataset.get(position).getKey());
  91.         holder.getheartButtonStatus(posKey,userID);
  93.         DatabaseReference likesReference = FirebaseDatabase.getInstance().getReference("Likes");
  95. //        HashMap<String, Object> result = new HashMap<>();
  97.         holder.heart.setOnLikeListener(new OnLikeListener() {
  98.             @Override
  99.             public void liked(LikeButton likeButton) {
  100.                 testCick = true;
  101.                 likesReference.addValueEventListener(new ValueEventListener() {
  102.                     @Override
  103.                     public void onDataChange(@NonNull @NotNull DataSnapshot snapshot) {
  104.                         if (testCick==true){
  105.                             if (snapshot.child(posKey).hasChild(userID)){
  106. //                                likesReference.child(posKey).removeValue();
  107. //                                holder.heart.setLiked(true);
  108.                                 testCick =false;
  110.                             }else{
  111.                                 likesReference.child(posKey).child(userID).setValue(true);
  112.                                 testCick = false;
  113.                             }
  114.                         }
  115.                     }
  117.                     @Override
  118.                     public void onCancelled(@NonNull @NotNull DatabaseError error) {
  120.                     }
  121.                 });
  123.             }
  125.             @Override
  126.             public void unLiked(LikeButton likeButton) {
  127.                 likesReference.child(posKey).removeValue();
  128.                 testCick =false;
  129.             }
  130.         });
  132.     }
  134.     @Override
  135.     public int getItemCount() {
  136.         return dataset.size();
  137.     }
  139.     public class MyHolder extends RecyclerView.ViewHolder{
  140.         TextView question;
  141.         RadioButton radioButton1,radioButton2,radioButton3,radioButton4;
  142.         ImageView imageView;
  143.         LikeButton heart,thumb,star;
  144.         RadioGroup radioGroup;
  146.         private Button Button;
  147.         public  MyHolder(View itemView){
  148.             super(itemView);
  149.             radioGroup =  itemView.findViewById(R.id.radioPostGroup);
  150.             question = (TextView) itemView.findViewById(R.id.question);
  151.             radioButton1 = itemView.findViewById(R.id.radioAnswer1);
  152.             radioButton2 = itemView.findViewById(R.id.radioAnswer2);
  153.             radioButton3 = itemView.findViewById(R.id.radioAnswer3);
  154.             radioButton4 = itemView.findViewById(R.id.radioAnswer4);
  155.             imageView = itemView.findViewById(R.id.QuestionImage);
  156.             Button = itemView.findViewById(R.id.submitAnswer);
  157.             heart= itemView.findViewById(R.id.myheart);
  158.             thumb= itemView.findViewById(R.id.mythumb);
  159.             star= itemView.findViewById(R.id.myStar);
  161.             Button.setOnClickListener(new View.OnClickListener() {
  162.                 @Override
  163.                 public void onClick(View view) {
  164.                     int selectedId = radioGroup.getCheckedRadioButtonId();
  165.                     Log.d("selected", "onClick: "+selectedId);
  166.                     radioButton = itemView.findViewById(selectedId);
  167.           //**`problem is in this section`**
  169.                     Toast.makeText(context.getApplicationContext(),radioButton.getText(),Toast.LENGTH_LONG).show();
  171.                     if(radioButton.getText().equals(CorrectAnswer)){
  172.                         radioButton.setBackgroundColor(Color.parseColor("#9ded9f"));
  173.                     }else{
  174.                         radioButton.setBackgroundColor(Color.parseColor("#990e0e"));
  175.                     }
  177.                 }
  178.             });
  180.         }
  182.         public void getheartButtonStatus(String posKey, String userID) {
  183.             heartReference = FirebaseDatabase.getInstance().getReference("Likes");
  184.             heartReference.addValueEventListener(new ValueEventListener() {
  185.                 @Override
  186.                 public void onDataChange(@NonNull @NotNull DataSnapshot snapshot) {
  187.                     if (snapshot.child(posKey).hasChild(userID)){
  188.                         int likeCount = (int)snapshot.child(posKey).getChildrenCount();
  189.                         heart.setLiked(true);
  190.                     }
  191.                 }
  193.                 @Override
  194.                 public void onCancelled(@NonNull @NotNull DatabaseError error) {
  196.                 }
  197.             });
  199.         }
  200.     }
  202. }
Javaandroidandroid-recyclerview

1条答案

按热度按时间
enyaitl3

enyaitl31#

每次将数据绑定到viewholder时，都会设置 CorrectAnswer 达到一定的价值。问题是只有一个 CorrectAnswer 它包含最后一个值绑定，可以是显示的任何内容，也可以是少数未显示的内容。
您可以通过使用viewholder中的变量将正确答案与每个viewholder关联，或根据位置从数组中获取答案来解决此问题。
例如，在myholder中，定义成员变量如下：

  1. String correctAnswer;

删除全局 CorrectAnswer 变量
然后，在 onBindViewHolder() 如下所示设置变量：

  1. holder.correctAnswer  = dataset.get(position).getCorrectAnswer();

现在，在click listener中，您可以检查所问问题的正确答案。每个myholder都包含它所代表的问题的答案。

  1. if(radioButton.getText().equals(correctAnswer)){
  2.     radioButton.setBackgroundColor(Color.parseColor("#9ded9f"));
  3. } else {
  4.     radioButton.setBackgroundColor(Color.parseColor("#990e0e"));
  5.                 }
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