点击操作后Android单选按钮颜色发生变化

Question

RadioGroup rg = new RadioGroup(context);
for (int i = 0; i < formElement.getRadioOptions().size(); i++) {
                RadioButton radiobutton1 = new RadioButton(context);
                radiobutton1.setText(formElement.getRadioOptions().get(i).getValue());
                radiobutton1.setTextSize(TypedValue.COMPLEX_UNIT_PX, context.getResources().getDimension(R.dimen.meetingNoteCL));
                radiobutton1.setHighlightColor(context.getResources().getColor(R.color.text_color));
                rg.addView(radiobutton1);
            }
            textInputLayout.setTypeface(FontUtils.getFontTypeRegular(context));
            rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(RadioGroup group, int checkedId) {
                    // checkedId is the RadioButton selected
                   
                    int radioButtonID = group.getCheckedRadioButtonId();
                    View radioButton = group.findViewById(radioButtonID);
                    int idx = group.indexOfChild(radioButton);
                    formElement.setKey(formElement.getRadioOptions().get(idx).getKey());
                    formElement.setValue(formElement.getRadioOptions().get(idx).getValue());

                }
            });

上面的单选按钮代码，但是在选择之后，我需要将特定的单选按钮颜色单独更改为蓝色

Answer 1

onCheckedChanged回调有一个check edId，您可以使用它来获取该特定按钮

您只需要在将按钮添加到组之前为它们分配唯一的ID。这是为实现这一点而修改的代码。

RadioGroup rg = new RadioGroup(context);
for (int i = 0; i < formElement.getRadioOptions().size(); i++) {
                RadioButton radiobutton1 = new RadioButton(context);

//set a unique id

radiobutton1.setId(View.generateViewId());
              radiobutton1.setText(formElement.getRadioOptions().get(i).getValue());
                radiobutton1.setTextSize(TypedValue.COMPLEX_UNIT_PX, context.getResources().getDimension(R.dimen.meetingNoteCL));
                radiobutton1.setHighlightColor(context.getResources().getColor(R.color.text_color));
                rg.addView(radiobutton1);
            }
            textInputLayout.setTypeface(FontUtils.getFontTypeRegular(context));
            rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(RadioGroup group, int checkedId) {
                    // checkedId is the RadioButton selected
                   
                    int radioButtonID = group.getCheckedRadioButtonId();
                    RadioButton radioButton = (RadioButton)group.findViewById(radioButtonID);

//if its checked then change it's tintlist

if(radioButton.isChecked()){
radioButton.setButtonTintList(ColorStateList.valueOf(ContextCompat.getColor(context,R.color.yourcolor)));
}
                    int idx = group.indexOfChild(radioButton);
                    formElement.setKey(formElement.getRadioOptions().get(idx).getKey());
                    formElement.setValue(formElement.getRadioOptions().get(idx).getValue());

                }
            });