Android

Question

我正在寻找一种更好的方法来隐藏我的复选框。每种情况下至少有 2 个和最多 5 个复选框（5 个答案复选框和 5 个解决方案复选框）。

我正在用我的数据库的值动态填充答案 Arraylist。然后我检查每个案例列表是否有值。如果有值，则 CheckBox 获取答案文本，否则文本为空。之后我想隐藏所有具有空值的答案复选框。此外，我还必须处理相关的解决方案 CheckBoxes。这是我的实现方式：

if (question.getQuestiontype() == 2) {
            cb_answer1.setText(answerList.size() >= 1 ? answerList.get(0).getAnswertext() : null);
            cb_answer2.setText(answerList.size() >= 2 ? answerList.get(1).getAnswertext() : null);
            cb_answer3.setText(answerList.size() >= 3 ? answerList.get(2).getAnswertext() : null);
            cb_answer4.setText(answerList.size() >= 4 ? answerList.get(3).getAnswertext() : null);
            cb_answer5.setText(answerList.size() >= 5 ? answerList.get(4).getAnswertext() : null);

            if (cb_answer3.getText().toString().isEmpty()) {
                cb_answer3.setVisibility(View.INVISIBLE);
                cb_answer4.setVisibility(View.INVISIBLE);
                cb_answer5.setVisibility(View.INVISIBLE);
                cb_solution3.setVisibility(View.INVISIBLE);
                cb_solution4.setVisibility(View.INVISIBLE);
                cb_solution5.setVisibility(View.INVISIBLE);
            } else {
                cb_answer3.setVisibility(View.VISIBLE);
                cb_answer4.setVisibility(View.VISIBLE);
                cb_answer5.setVisibility(View.VISIBLE);
                cb_solution3.setVisibility(View.VISIBLE);
                cb_solution4.setVisibility(View.VISIBLE);
                cb_solution5.setVisibility(View.VISIBLE);
            }

            if (cb_answer4.getText().toString().isEmpty()) {
                cb_answer4.setVisibility(View.INVISIBLE);
                cb_answer5.setVisibility(View.INVISIBLE);
                cb_solution4.setVisibility(View.INVISIBLE);
                cb_solution5.setVisibility(View.INVISIBLE);
            } else {
                cb_answer4.setVisibility(View.VISIBLE);
                cb_answer5.setVisibility(View.VISIBLE);
                cb_solution4.setVisibility(View.VISIBLE);
                cb_solution5.setVisibility(View.VISIBLE);
            }

            if (cb_answer5.getText().toString().isEmpty()) {
                cb_answer5.setVisibility(View.INVISIBLE);
                cb_solution5.setVisibility(View.INVISIBLE);
            } else {
                cb_answer5.setVisibility(View.VISIBLE);
                cb_solution5.setVisibility(View.VISIBLE);
            }

            for (CheckBox cb : answerCheckBoxes) {
                cb.setEnabled(true);
            }
        }

看起来有点尴尬，我认为这不是处理这个问题的最佳方式。你能给我一些建议吗？

Answer 1

视图数组怎么样？

示例：

CheckBox[] answers = new CheckBox[] {cb_answer1, cb_answer2, cb_answer3, cb_answer4, cb_answer5};
for (int i = answerList.size(); i < answers.length; i++) {
   answers[i].setVisibility(View.INVISIBLE);
}

请随意扩展！

Answer 2

首先，如果我的理解很好，我认为你可以像这里一样简化你的代码分离 cbs 逻辑：

if(question.getQuestiontype()==2)

{
    cb_answer1.setText(answerList.size() >= 1 ? answerList.get(0).getAnswertext() : null);
    cb_answer2.setText(answerList.size() >= 2 ? answerList.get(1).getAnswertext() : null);
    cb_answer3.setText(answerList.size() >= 3 ? answerList.get(2).getAnswertext() : null);
    cb_answer4.setText(answerList.size() >= 4 ? answerList.get(3).getAnswertext() : null);
    cb_answer5.setText(answerList.size() >= 5 ? answerList.get(4).getAnswertext() : null);

    if (cb_answer3.getText().toString().isEmpty()) {
        cb_answer3.setVisibility(View.INVISIBLE);
        cb_solution3.setVisibility(View.INVISIBLE);
    } else {
        cb_answer3.setVisibility(View.VISIBLE);
        cb_solution3.setVisibility(View.VISIBLE);
    }

    if (cb_answer4.getText().toString().isEmpty()) {
        cb_answer4.setVisibility(View.INVISIBLE);
        cb_solution4.setVisibility(View.INVISIBLE);
    } else {
        cb_answer4.setVisibility(View.VISIBLE);
        cb_solution4.setVisibility(View.VISIBLE);
    }

    if (cb_answer5.getText().toString().isEmpty()) {
        cb_answer5.setVisibility(View.INVISIBLE);
        cb_solution5.setVisibility(View.INVISIBLE);
    } else {
        cb_answer5.setVisibility(View.VISIBLE);
        cb_solution5.setVisibility(View.VISIBLE);
    }

    for (CheckBox cb : answerCheckBoxes) {
        cb.setEnabled(true);
    }
}

然后查看这段代码，您可以看到您正在对各种答案和响应 cbs 执行相同的操作。所以你可以创建一个像这样的参数化方法：

if(question.getQuestiontype()==2) {

    cb_answer1.setText(answerList.size() >= 1 ? answerList.get(0).getAnswertext() : null);
    cb_answer2.setText(answerList.size() >= 2 ? answerList.get(1).getAnswertext() : null);
    cb_answer3.setText(answerList.size() >= 3 ? answerList.get(2).getAnswertext() : null);
    cb_answer4.setText(answerList.size() >= 4 ? answerList.get(3).getAnswertext() : null);
    cb_answer5.setText(answerList.size() >= 5 ? answerList.get(4).getAnswertext() : null);

    this.setCheckboxVisibility(cb_answer3, cb_solution3);
    this.setCheckboxVisibility(cb_answer4, cb_solution4);
    this.setCheckboxVisibility(cb_answer5, cb_solution5);

    for (CheckBox cb : answerCheckBoxes) {
        cb.setEnabled(true);
    }
}


private void setCheckboxVisibility(Checkbox answer, Checkbox solution) {

    if (answer.getText().toString().isEmpty()) {
        answer.setVisibility(View.INVISIBLE);
        solution.setVisibility(View.INVISIBLE);
    } else {
        answer.setVisibility(View.VISIBLE);
        solution.setVisibility(View.VISIBLE);
    }
}

然后您可以将此解决方案与 TWL

发布的解决方案结合使用

Android - 如果值为空则隐藏复选框

Android - Hiding CheckBoxes if value is empty

arraylist

android-view

android-checkbox