RadioGroup onCheckedChanged返回ArrayIndexOutOfBoundException

Question

下面是RadioGroup xml文件：

<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/radio_group"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">

</RadioGroup>

然后我编写了按钮：

public class AbilityDialog extends DialogFragment {
    public static final String ATAG = "ABILITY_DIALOG";

    private String[] mAbilityList;

    public AbilityDialog() {

    }

    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        return inflater.inflate(R.layout.dialog_ability, container);
    }

@Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        RadioGroup radioGroup = (RadioGroup) getView().findViewById(R.id.radio_group);
        radioGroup.removeAllViews();
        mAbilityList = getArguments().getStringArray("AbilityList");
        int selectedAbility = getArguments().getInt("SelectedAbility");
        for (int i=0; i < mAbilityList.length; i++) {
            RadioButton radioButton = new RadioButton(getActivity());
            radioButton.setText(mAbilityList[i]);
            radioButton.setPadding(0, 0, 48, 0);
            radioGroup.addView(radioButton);
        }
        radioGroup.check(selectedAbility);
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                FragmentManager fm = getActivity().getSupportFragmentManager();
                MyFragment myFragment = (MyFragment) fm.findFragmentByTag(MyFragment.TAG);
                myFragment.setAbility(checkedId-1);
                getDialog().dismiss();
            }
        });
    }
}

下面是主要的片段：

public class MyFragment extends DialogFragment {
public final static String TAG = "MAIN_FRAGMENT";
private int mAbility;
private String[] mAbilityList;

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.my_fragment, container, false);
    getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);

    TextView ability = (TextView) view.findViewById(R.id.stats_abilities);
    mAbilityList = getResources().getStringArray(R.array.p184Ability);
    String abilities = mAbilityList[0];
    for (int i=1; i < mAbilityList.length; i++) {
        abilities += " / " + mAbilityList[i];
    }
    if (getArguments() != null && getArguments().getInt("Ability") != 0) {
        setAbility(getArguments().getInt("Ability") - 1);
    } else {
        mAbility = -1;
    }

    ability.setText(abilities);
    ability.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            FragmentManager fm = getActivity().getSupportFragmentManager();
            AbilityDialog abilityDialog = new AbilityDialog();
            Bundle bundle = new Bundle();
            bundle.putStringArray("AbilityList", mAbilityList);
            bundle.putInt("SelectedAbility", mAbility);
            abilityDialog.setArguments(bundle);

            abilityDialog.show(fm, AbilityDialog.ATAG);
        }
    });



public void setAbility(int ability) {
    mAbility = ability;
    if (mAbility != -1) {
        TextView pokemonAbility = (TextView) getView().findViewById(R.id.stats_abilities);
        pokemonAbility.setText(mAbilityList[ability]);
    }
}

private void closeFragment() {
    getActivity().getSupportFragmentManager().beginTransaction().remove(this).commit();
}

我希望现在有足够的信息。

编辑:它似乎是不可编译的。如果问题仍然无法诊断，我会提供更多的代码。

Answer 1

我的第一个猜测是，虽然我无法在没有更多代码的情况下检查它，但视图没有被重新创建，因此您正在向组中添加越来越多的单选按钮，而不是每次都重新启动它。

您可以使用radioGroup.removeAllViews()强制它清除所有按钮

将其添加到onViewCreated(...)的开头，看看会发生什么。