android - 在 RecyclerView Adapter 的 onBindViewHolder 中获取上下文

Question

我正在尝试在 RecyclerViewAdapter 中以编程方式创建复选框，但我不确定如何在 onBindViewHolder 中传递上下文。同样值得注意的是我使用了 4 个不同的 ViewHolders 类。

这是我要添加复选框的 ViewHolder 类，这段代码在 onBindViewHolder

中

ViewHolderMulChoice viewHolderMulChoice = (ViewHolderMulChoice) holder;
viewHolderMulChoice.questionNumber.setText((position + 1) + ")");
viewHolderMulChoice.questionTitle.setText(current.getQuestion());
viewHolderMulChoice.questionInstructions.setText(current.getInstruction());
if (current.getOptional() == 1) {
    viewHolderMulChoice.questionOptional.setText("*");
} else {
    viewHolderMulChoice.questionOptional.setText("");
}

List<SurveyQuestionOptions> options = current.getSurvey_question_option();
for (SurveyQuestionOptions option: options) {
    CheckBox checkBox = new CheckBox(//context goes here);
    checkBox.setText(option.getOption());
    viewHolderMulChoice.options.addView(checkBox);
}

Answer 1

您不必将上下文作为构造函数参数。每个 View 都引用上下文

@Override
public void onBindViewHolder(@NonNull Holder holder, int i) {
     Context context = holder.itemview.getContext();
}