如何在Android中獲取所選單選按鈕的ID

Question

在我的項目中，我為用戶創建了3個Radio Buttons for Multiple Choice選項。 我在SQLite數據庫中有一些問題和答案，我在Activity檢索，然后在RadioGroup設置它們。 它正常工作，但現在當我想獲得所選的單選按鈕的所有ID，然后計算它。 我正在使用'com.stepstone.stepper:material-stepper:4.3.1'庫（ 參考鏈接 ）。

我的活動

public class KlasifikasiActivity extends AppCompatActivity implements StepperLayout.StepperListener {

    @Override
    public void onCompleted(View completeButton) {
        Toast.makeText(this, "onCompleted!", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onError(VerificationError verificationError) {
        Toast.makeText(this, "onError! -> " + verificationError.getErrorMessage(), Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onStepSelected(int newStepPosition) {
        Toast.makeText(this, "onStepSelected! -> " + newStepPosition, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onReturn() {
        finish();
    }
}

我的StepFragment

public class StepFragmentExample extends Fragment implements Step {


    public StepFragmentExample() {
        // Required empty public constructor
    }

    RadioGroup mRadioGroup;
    RadioButton mRadioButton1;
    RadioButton mRadioButton2;
    RadioButton mRadioButton3;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        Bundle bundle = this.getArguments();
        Log.d("##", "onCreateView: " + bundle.getInt(MyStepperAdapter.CURRENT_STEP_POSITION_KEY)) ;

        View view = inflater.inflate(R.layout.fragment_step_fragment_example, container, false);

        mRadioGroup = view.findViewById(R.id.radioGroupWrapper);

        DatabaseHelper mDBHelper = new DatabaseHelper(getContext());
        Log.d("#######", String.valueOf(bundle.getInt(MyStepperAdapter.CURRENT_STEP_POSITION_KEY)));
        final List<Klasifikasi> lk = mDBHelper.getListKlasifikasiByGroup(String.valueOf(Integer.valueOf(bundle.getInt(MyStepperAdapter.CURRENT_STEP_POSITION_KEY)) + 1));
        final RadioButton[] rb = new RadioButton[lk.size()];
        Log.d("##sz", "onCreateView: " + lk.size()) ;


        int[][] states = new int[][] {
                new int[] { android.R.attr.state_enabled}, // enabled
                new int[] {-android.R.attr.state_enabled}, // disabled
                new int[] {-android.R.attr.state_checked}, // unchecked
                new int[] { android.R.attr.state_pressed}  // pressed
        };

        int[] colors = new int[] {
                Color.BLACK,
                Color.BLACK,
                Color.BLACK,
                Color.BLACK
        };

        mRadioButton1 = view.findViewById(R.id.checkbox1);
        mRadioButton2 = view.findViewById(R.id.checkbox2);
        mRadioButton3 = view.findViewById(R.id.checkbox3);

        if(lk.size() > 0) {
            Klasifikasi kl0 = lk.get(0);
            Klasifikasi kl1 = lk.get(1);
            Klasifikasi kl2 = lk.get(2);
            mRadioButton1.setText(kl0.getKlasifikasi());
            mRadioButton2.setText(kl1.getKlasifikasi());
            mRadioButton3.setText(kl2.getKlasifikasi());
        }

        return view;
    }

    @Nullable
    @Override
    public VerificationError verifyStep() {
        return null;
    }

    @Override
    public void onSelected() {

    }

    @Override
    public void onError(@NonNull VerificationError error) {

    }
}

如何獲取所選單選按鈕的ID？ 我的完整代碼在此鏈接中。

Answer 1

使用mRadioGroup.getCheckedRadioButtonId()獲取RadioGroup中所選RadioButton的id

Answer 2

您可以將這些值保存到帶有問題ID和答案ID的新表中的SQLite數據庫，並在最終頁面中計算這些值！ 或者您可以管理靜態Arraylist來存儲用戶的答案。 我更喜歡SQLite來存儲值。