Java RadioGroup中的RecyclerView和RadioButton
我有RecyclerView，在RowItem布局中有RadioGroup，其中有两个RadioButton。如果我选择第一项并滚动到底部，第八项、第十六项，。。。因此，检查：| 怎么处理 tnx的答案。。如果你需要任何信息。。我把主题 ques\u item\u row.xmlJava RadioGroup中的RecyclerView和RadioButton,java,android,android-recyclerview,radio-button,radio-group,Java,Android,Android Recyclerview,Radio Button,Radio Group,我有RecyclerView，在RowItem布局中有RadioGroup，其中有两个RadioButton。如果我选择第一项并滚动到底部，第八项、第十六项，。。。因此，检查：| 怎么处理 tnx的答案。。如果你需要任何信息。。我把主题 ques\u item\u row.xml <RadioGroup android:id="@+id/ques_radio_group" android:layout_wid
<RadioGroup
android:id="@+id/ques_radio_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/txt_ques_title"
android:layout_gravity="end|center"
android:gravity="start"
android:orientation="vertical"
android:textAlignment="textStart"
android:textDirection="rtl">
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/first_ques"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="end|right"
android:layout_margin="@dimen/quest_margin"
android:gravity="end|right"
android:checked="false"
android:padding="@dimen/quest_padding"
android:text="@{question.firstQuest}"
android:textColor="@color/ques"
android:textDirection="ltr"
android:textSize="@dimen/text_ques"
/>
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/second_ques"
android:layout_below="@+id/first_ques"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="end|right"
android:layout_margin="@dimen/quest_margin"
android:gravity="end|right"
android:checked="false"
android:padding="@dimen/quest_padding"
android:text="@{question.secondQuest}"
android:textColor="@color/ques"
android:textDirection="ltr"
android:textSize="@dimen/text_ques"
/>
</RadioGroup>
<data>
<variable
name="item"
type="com.innovanathinklabs.sample.ui2.Item"/>
</data>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:background="@color/colorPrimary"
android:checkedButton="@={item.selectedId}"
>
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/rbMale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="male"/>
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/rbFemale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="female"/>
</RadioGroup>
public class Question {
private String questNum;
private String questTitle;
private String firstQuest;
private String secondQuest;
private int score = 0;
private int firstQuestScore = 2;
private int secondQuestScore = 3;
private boolean isFirstChecked;
private boolean isSecondChecked;
public Question(String questNum, String questTitle, String firstQuest, String secondQuest) {
this.questTitle = questTitle;
this.firstQuest = firstQuest;
this.secondQuest = secondQuest;
this.questNum = questNum;
}
public Question() {
}
public String getQuestTitle() {
return questTitle;
}
public void setQuestTitle(String questTitle) {
this.questTitle = questTitle;
}
public String getFirstQuest() {
return firstQuest;
}
public void setFirstQuest(String firstQuest) {
this.firstQuest = firstQuest;
}
public String getSecondQuest() {
return secondQuest;
}
public void setSecondQuest(String secondQuest) {
this.secondQuest = secondQuest;
}
public String getQuestNum() {
return questNum;
}
public void setQuestNum(String questNum) {
this.questNum = questNum;
}
public boolean isFirstChecked() {
return isFirstChecked;
}
public void setFirstChecked(boolean firstChecked) {
isFirstChecked = firstChecked;
}
public boolean isSecondChecked() {
return isSecondChecked;
}
public void setSecondChecked(boolean secondChecked) {
isSecondChecked = secondChecked;
}
public int getScore() {
return score;
}
public void setScore(int questNum, int questScore) {
this.score = ((questNum * questScore) + questNum);
}
public int getFirstQuestScore() {
return firstQuestScore;
}
public void setFirstQuestScore(int firstQuestScore) {
this.firstQuestScore = firstQuestScore;
}
public int getSecondQuestScore() {
return secondQuestScore;
}
public void setSecondQuestScore(int secondQuestScore) {
this.secondQuestScore = secondQuestScore;
}
public void mathScore(int questNum, int questScore) {
}
}
public class MbtiQuestAdapter extends RecyclerView.Adapter<MbtiQuestAdapter.MbtiQuestViewHolder> {
private Context context;
private List<Question> questionList;
private LayoutInflater layoutInflater;
private FloatingActionButton fabResult;
private CoordinatorLayout coordinator;
private int checkRadio = 0;
private Snackbar snackbar;
private int totalScore = 0;
private static final String TAG = "MbtiQuestAdapter";
public MbtiQuestAdapter(Context context, List<Question> questionList, FloatingActionButton fab, CoordinatorLayout coordinator) {
this.context = context;
this.questionList = questionList;
this.fabResult = fab;
this.coordinator = coordinator;
}
@NonNull
@Override
public MbtiQuestViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
if (layoutInflater == null) {
layoutInflater = LayoutInflater.from(context);
}
QuesItemRowBinding binding = DataBindingUtil.inflate(layoutInflater,
R.layout.ques_item_row, parent, false);
return new MbtiQuestViewHolder(binding);
}
@Override
public void onBindViewHolder(@NonNull final MbtiQuestViewHolder holder, final int position) {
final Question question = questionList.get(position);
holder.binding.setQuestion(question);
//Fix the select the radio Button when first Select 8th and... do not selected
//************************************************************
//Check if all question do not click do not allow go to the next page
holder.binding.quesRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (holder.binding.firstQues.isChecked() || holder.binding.secondQues.isChecked()) {
checkRadio++;
} else {
// snackbar = Snackbar.make(coordinator, R.string.choose_one_of_theme, Snackbar.LENGTH_INDEFINITE);
// snackbar.show();
}
}
});
if (fabResult != null) {
fabResult.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (checkRadio == 60) {
context.startActivity(new Intent(context, ResultActivity.class));
totalScore = 0;
for (int i = 0; i < 60; i++) {
totalScore = totalScore + question.getScore();
Log.i(TAG, "TotalScore: " + totalScore);
}
switch (totalScore) {
}
} else {
snackbar = Snackbar.make(coordinator, R.string.check_all_ques_err, Snackbar.LENGTH_SHORT);
snackbar.show();
}
}
}
);
//*************************************************************
}
}
@Override
public int getItemCount() {
return questionList.size();
}
public class MbtiQuestViewHolder extends RecyclerView.ViewHolder {
private QuesItemRowBinding binding;
public MbtiQuestViewHolder(QuesItemRowBinding binding) {
super(binding.getRoot());
this.binding = binding;
}
}
}
public class Item extends BaseObservable{
private int selectedId;
public int getSelectedId() {
return selectedId;
}
public void setSelectedId(int selectedId) {
this.selectedId = selectedId;
}
}
将
private int isFirstQuestionChecked=false添加到您的模型中，并在您选择此单选按钮时对其进行更改。在适配器中显示单选按钮的正确值
if (element.isFirstQuestionChecked == true) {
selectRadioButton()
} else {
deselectRadioButton() // it's important!
}
您必须将选定的单选按钮id保留到您的型号。
1> 在您的模型中使用selectedId
class Model{
int selctedId;
// getter setter
}
2> 将此id附加到您的广播组
@Override
public void onBindViewHolder(final CoachListViewHolder holder, final int position) {
Model model = list.get(position);
holder.radioGroup.check(model.getSelectedId);
holder.radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
{
public void onCheckedChanged(RadioGroup group, int checkedId)
{
model.setSelectedId(checkedId);
}
});
在这个解决方案中，我们在模型中保留所选id，并通过radioGroup.check（model.getSelectedId）将此字段附加回无线组
原因
当您不持有所选值时，当用户滚动位置时，该值将被回收
我还找到了一个相关的
经过充分测试的溶液
您使用的是数据绑定，所以上述解决方案可能会更简短。用于保存所选id
Item.java
public class Question {
private String questNum;
private String questTitle;
private String firstQuest;
private String secondQuest;
private int score = 0;
private int firstQuestScore = 2;
private int secondQuestScore = 3;
private boolean isFirstChecked;
private boolean isSecondChecked;
public Question(String questNum, String questTitle, String firstQuest, String secondQuest) {
this.questTitle = questTitle;
this.firstQuest = firstQuest;
this.secondQuest = secondQuest;
this.questNum = questNum;
}
public Question() {
}
public String getQuestTitle() {
return questTitle;
}
public void setQuestTitle(String questTitle) {
this.questTitle = questTitle;
}
public String getFirstQuest() {
return firstQuest;
}
public void setFirstQuest(String firstQuest) {
this.firstQuest = firstQuest;
}
public String getSecondQuest() {
return secondQuest;
}
public void setSecondQuest(String secondQuest) {
this.secondQuest = secondQuest;
}
public String getQuestNum() {
return questNum;
}
public void setQuestNum(String questNum) {
this.questNum = questNum;
}
public boolean isFirstChecked() {
return isFirstChecked;
}
public void setFirstChecked(boolean firstChecked) {
isFirstChecked = firstChecked;
}
public boolean isSecondChecked() {
return isSecondChecked;
}
public void setSecondChecked(boolean secondChecked) {
isSecondChecked = secondChecked;
}
public int getScore() {
return score;
}
public void setScore(int questNum, int questScore) {
this.score = ((questNum * questScore) + questNum);
}
public int getFirstQuestScore() {
return firstQuestScore;
}
public void setFirstQuestScore(int firstQuestScore) {
this.firstQuestScore = firstQuestScore;
}
public int getSecondQuestScore() {
return secondQuestScore;
}
public void setSecondQuestScore(int secondQuestScore) {
this.secondQuestScore = secondQuestScore;
}
public void mathScore(int questNum, int questScore) {
}
}
public class MbtiQuestAdapter extends RecyclerView.Adapter<MbtiQuestAdapter.MbtiQuestViewHolder> {
private Context context;
private List<Question> questionList;
private LayoutInflater layoutInflater;
private FloatingActionButton fabResult;
private CoordinatorLayout coordinator;
private int checkRadio = 0;
private Snackbar snackbar;
private int totalScore = 0;
private static final String TAG = "MbtiQuestAdapter";
public MbtiQuestAdapter(Context context, List<Question> questionList, FloatingActionButton fab, CoordinatorLayout coordinator) {
this.context = context;
this.questionList = questionList;
this.fabResult = fab;
this.coordinator = coordinator;
}
@NonNull
@Override
public MbtiQuestViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
if (layoutInflater == null) {
layoutInflater = LayoutInflater.from(context);
}
QuesItemRowBinding binding = DataBindingUtil.inflate(layoutInflater,
R.layout.ques_item_row, parent, false);
return new MbtiQuestViewHolder(binding);
}
@Override
public void onBindViewHolder(@NonNull final MbtiQuestViewHolder holder, final int position) {
final Question question = questionList.get(position);
holder.binding.setQuestion(question);
//Fix the select the radio Button when first Select 8th and... do not selected
//************************************************************
//Check if all question do not click do not allow go to the next page
holder.binding.quesRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (holder.binding.firstQues.isChecked() || holder.binding.secondQues.isChecked()) {
checkRadio++;
} else {
// snackbar = Snackbar.make(coordinator, R.string.choose_one_of_theme, Snackbar.LENGTH_INDEFINITE);
// snackbar.show();
}
}
});
if (fabResult != null) {
fabResult.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (checkRadio == 60) {
context.startActivity(new Intent(context, ResultActivity.class));
totalScore = 0;
for (int i = 0; i < 60; i++) {
totalScore = totalScore + question.getScore();
Log.i(TAG, "TotalScore: " + totalScore);
}
switch (totalScore) {
}
} else {
snackbar = Snackbar.make(coordinator, R.string.check_all_ques_err, Snackbar.LENGTH_SHORT);
snackbar.show();
}
}
}
);
//*************************************************************
}
}
@Override
public int getItemCount() {
return questionList.size();
}
public class MbtiQuestViewHolder extends RecyclerView.ViewHolder {
private QuesItemRowBinding binding;
public MbtiQuestViewHolder(QuesItemRowBinding binding) {
super(binding.getRoot());
this.binding = binding;
}
}
}
public class Item extends BaseObservable{
private int selectedId;
public int getSelectedId() {
return selectedId;
}
public void setSelectedId(int selectedId) {
this.selectedId = selectedId;
}
}
行列表.xml
<RadioGroup
android:id="@+id/ques_radio_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/txt_ques_title"
android:layout_gravity="end|center"
android:gravity="start"
android:orientation="vertical"
android:textAlignment="textStart"
android:textDirection="rtl">
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/first_ques"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="end|right"
android:layout_margin="@dimen/quest_margin"
android:gravity="end|right"
android:checked="false"
android:padding="@dimen/quest_padding"
android:text="@{question.firstQuest}"
android:textColor="@color/ques"
android:textDirection="ltr"
android:textSize="@dimen/text_ques"
/>
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/second_ques"
android:layout_below="@+id/first_ques"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="end|right"
android:layout_margin="@dimen/quest_margin"
android:gravity="end|right"
android:checked="false"
android:padding="@dimen/quest_padding"
android:text="@{question.secondQuest}"
android:textColor="@color/ques"
android:textDirection="ltr"
android:textSize="@dimen/text_ques"
/>
</RadioGroup>
<data>
<variable
name="item"
type="com.innovanathinklabs.sample.ui2.Item"/>
</data>
<RadioGroup
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:background="@color/colorPrimary"
android:checkedButton="@={item.selectedId}"
>
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/rbMale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="male"/>
<android.support.v7.widget.AppCompatRadioButton
android:id="@+id/rbFemale"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="female"/>
</RadioGroup>
同时从单选组和单选按钮中删除任何其他不必要的逻辑
数据绑定的魔力在于
此代码被转换为android:checkedButton=“@={item.selectedId}”
使现代化
这是在项目布局中绑定项目的方式
holder.binding.setItem(list.get(position));
在这里添加你的回收适配器代码了解你的问题，参考这个答案链接我累了，但我得到了错误，等一下我得到了这个错误，看起来你的帖子主要是代码；请添加更多详细信息。请尝试添加onBindViewHolder（）和相关代码。不要尝试添加整个code.tnx，但是isFirstQuestionChecked应该是布尔值，对吗？请给我解释一下密码。选择RadioButton（），取消选择RadioButton（）？是，firstQuestionChecked是布尔变量。每次您选中/取消选中radioButton时，您都会在您的模型中执行相同的操作。所以列表中的每个单选按钮都存储在你们的模型中——并没有机会将答案附加到错误的单元格中。在stackoverflow上有很多类似的主题。。。我打了个结，但我有个问题。。。当选中radioButton和scrool时，所有选项都变为取消选中：（：： <代码>if（question.isFirstChecked（））{holder.binding.firstQues.setChecked（true）；}else{holder.binding.firstQues.setChecked（false）；}if（question.isSecondChecked（））{holder.binding.secondQues.setChecked（true）；}else{holder.binding.secondQues.setChecked（false）；}
您是否在模型中更改了getter isFirstChecked（）下的变量？您也应该在适配器外执行此操作。使用接口回调来执行此操作。``private boolean isFirstQuestionChecked=false；private boolean isSecondQuestionChecked=false；``在模型中和：：if（question.isFirstQuestionChecked（））{holder.binding.firstQues.setChecked（true）；}else{holder.binding.firstQues.setChecked（false）；}if（question.isSecondQuestionChecked（））{holder.binding.secondQues.setChecked（true）；}else{holder.binding.secondQues.setChecked（false）；}
在adapter.callback中？你是什么意思？请为我们解释一下。