如何进行
- 在
getView()中动态添加一个CheckBox -
为具有不同计数的
CheckBox设置文本。。。在解释中。。。
在Listview 中
- 问题1需要5个复选框
- 问题2需要7个复选框
- 问题3需要3个复选框
- 问题4需要8个复选框
这就是我想要的，我使用了代码。。。
@SuppressWarnings("deprecation")
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
view = mLayoutInflater.inflate(R.layout.question_items, null);
final TextView question_number = (TextView) view.findViewById(R.id.qno_text);
final TextView question = (TextView) view.findViewById(R.id.qstn_text);
LinearLayout linear_layout = (LinearLayout) view.findViewById(R.id.linear_vertical);
question_number.setText(question_items.get(position).getQuestionNo());
question.setText(question_items.get(position).getQuestion());
String single_or_multiple = question_items.get(position).getSingleSelect();
if(single_or_multiple.equals("0")) {
final ArrayList<String> answer_check_box = new ArrayList<>();
final ArrayList<String> questions = new ArrayList<>();
final ArrayList<String> questions_in_ques_and_ans = new ArrayList<>();
final ArrayList<String> questions_and_checking = new ArrayList<>();
checkBoxState = new boolean[question_items.get(position).getOptionList().size()];
final int check_size = question_items.get(position).getOptionList().size();
Log.d("Size", String.valueOf(check_size));
for(int i = 0; i<question_items.get(position).getOptionList().size(); i++) {
check_box = new CheckBox(context);
check_box.setGravity(Gravity.CENTER);
check_box.setBackgroundDrawable(getApplication().getResources().getDrawable(R.drawable.fifth_username));
check_box.setPadding(8, 8, 8, 8);
check_box.setText(question_items.get(position).getOptionList().get(i).getOPTIONS());
LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
params.setMargins(10, 10, 10, 10);
check_box.setLayoutParams(params);
check_box.setId(i);
check_box.setTag(i);
check_box.setChecked(false);
check_box.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int id = buttonView.getId();
Log.d("ID", String.valueOf(id));
tag_val = (int) buttonView.getTag();
String tag_value = String.valueOf(tag_val);
Log.d("TAG", tag_value);
Question_Number = question_number.getText().toString();
Question = question.getText().toString();
String value = "";
if(isChecked) {
value = question_items.get(position).getOptionList().get(id).getOPTIONS();
Log.d("checkbox checked value", value);
answer_check_box.add(value);
if(questions.size() > 0) {
if(questions.contains(Question)) {
questions.remove(Question);
questions.add(Question);
} else {
questions.add(Question);
}
} else {
questions.add(Question);
}
Log.d("Answers Checked", answer_check_box.toString());
Log.d("Question Checked", questions.toString());
Answer = answer_check_box.toString();
}else {
value = question_items.get(position).getOptionList().get(id).getOPTIONS();
Log.d("checkbox Unchecked value", value);
answer_check_box.remove(value);
if(answer_check_box.size() > 0) {
} else {
questions.remove(Question);
}
Log.d("Answers Unchecked", answer_check_box.toString());
Log.d("Question UnChecked", questions.toString());
Answer = answer_check_box.toString();
}
if(questions_and_checking.size() > 0) {
Log.d("Size","above 1");
for(int check = 0; check < questions_and_checking.size(); check++) {
questions_in_ques_and_ans.add(questions_and_checking.get(check));
}
Log.d("Questions check", questions_in_ques_and_ans.toString());
Log.d("Que array", ques_and_ans.toString());
if(questions_in_ques_and_ans.contains(Question)) {
Log.d("Contains","Que");
int index = ques_and_ans.indexOf(ques_and_ans.get(position));
Log.d("Index", String.valueOf(index));
ques_and_ans.remove(index);
Question_and_Answer item = new Question_and_Answer();
item.setQustionNumber(Question_Number);
item.setQuestionTitle(Question);
item.setOptionValue(Answer);
ques_and_ans.add(item);
questions_and_checking.add(Question);
} else {
Log.d("Not Contains","Que");
Question_and_Answer item = new Question_and_Answer();
item.setQustionNumber(Question_Number);
item.setQuestionTitle(Question);
item.setOptionValue(Answer);
ques_and_ans.add(item);
questions_and_checking.add(Question);
}
} else {
Log.d("Size", "0");
Question_and_Answer item = new Question_and_Answer();
item.setQustionNumber(Question_Number);
item.setQuestionTitle(Question);
item.setOptionValue(Answer);
ques_and_ans.add(item);
questions_and_checking.add(Question);
Log.d("Check After First add", ques_and_ans.toString());
}
}
});
linear_layout.addView(check_box);
}
} else {
radio_group = new RadioGroup(context);
for(int i=0; i<question_items.get(position).getOptionList().size(); i++) {
radio_button = new RadioButton(context);
radio_button.setGravity(Gravity.CENTER);
radio_button.setBackgroundDrawable(getApplication().getResources().getDrawable(R.drawable.fifth_username));
radio_button.setPadding(8, 8, 8, 8);
radio_button.setText(question_items.get(position).getOptionList().get(i).getOPTIONS());
LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
params.setMargins(10, 10, 10, 10);
radio_button.setLayoutParams(params);
radio_group.addView(radio_button);
}
linear_layout.addView(radio_group);
radio_group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup rgp, int checkedId) {
Question_Number =question_number.getText().toString();
Question = question.getText().toString();
radioButtonID = radio_group.getCheckedRadioButtonId();
View radioButton = radio_group.findViewById(radioButtonID);
idx = radio_group.indexOfChild(radioButton);
Log.d("id", String.valueOf(idx));
String answer = question_items.get(position).getOptionList().get(idx).getOPTIONS();
Toast.makeText(getApplicationContext(), answer, 2).show();
Answer = answer;
Question_and_Answer item = new Question_and_Answer();
item.setQustionNumber(Question_Number);
Log.d("Q_no", Question_Number);
item.setQuestionTitle(Question);
Log.d("Qstn", Question);
item.setOptionValue(Answer);
Log.d("Answer", Answer);
ques_and_ans.add(item);
}
});
}
return view;
}
我无法获取复选框和单选按钮的位置。。。因为当我滚动时，它会自动取消选中。我知道它是getView的属性，但我如何用这段代码来控制它。。。
是否为具有不同计数的
CheckBoxes设置文本？
每个CheckBox都有一个setText()-函数，您可以用所需的文本调用它。
在getView中动态添加
CheckBox？
您的ViewHolder包含一个LinearLayout。假设你想用CheckBoxes填充它，你应该能够
CheckBox cb = new CheckBox(this);
cb.setText("some text");
linear_layout.addView(cb);
对于您想要添加的每个CheckBox。您可能还希望设置onCheckedChangeListener，以便在用户检查CheckBox时得到通知。
也许有一种比在getView()中添加这些元素更简单的方法？
但问题是转换视图不起作用。因为我的第三个和第四个问题分别有3个和8个选项。但它只显示了5选项。。。
假设复选框的数量在CCD_ 14中，你应该能够做
for ( int i = 0; i < question_items.get(position).getQuestionNo(); i++ ) {
//code to add a single checkbox
}
如果你想遵循@Jawad关于设置可见性的方法，你也可以在循环中这样做。