Question

我正在尝试在“自定义”对话框中使用android Spinner，但是当我点击Spinner时，带有项目的列表将打开，您可以点击它们并关闭视图，但是没有选中任何项目。当我在正常的Fragment中使用完全相同的代码时，效果很好。

由于我发现任何地方都无济于事，因此在Dialog中使用微调框时，我需要知道些什么吗？

CustomDialog类：

public SelectionDialog(Activity context, ArrayAdapter<T> arrayAdapter, List<T> objects) {
    super(context);
    this.activity = context;
    this.arrayAdapter = arrayAdapter;
    this.objects = objects;
}



@SuppressLint("ResourceAsColor")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));

    View view = LayoutInflater.from(getContext()).inflate(R.layout.dialog_selection,null);

    setContentView(view);

    BodyMenuCard parentCard = view.findViewById(R.id.parentCard);
    parentCard.setHeader(header);

    TextView textView = parentCard.getCardBody().findViewById(R.id.bodyText);
    textView.setText(description);

    yesBtn = parentCard.getCardBody().findViewById(R.id.btn_yes);

    //spinner = parentCard.getCardBody().findViewById(R.id.employeeSpinner);
    spinner = view.findViewById(R.id.employeeSpinner);
    spinnerHandler = new EmployeeSpinnerHandler(getContext(), spinner, (List<Employee>) 
    toggleYesBtn(false);


    if (iconRessoruce != -1) parentCard.setIcon(iconRessoruce);
    if (backgroundColor != -1) parentCard.setCircleColor(backgroundColor);

    if (successfullCallback != null) yesBtn.setOnClickListener((v -> successfullCallback.onClick(this)));
    if (abbortCalllback != null) {
        parentCard.getCardBody().findViewById(R.id.btn_no).setOnClickListener((v -> abbortCalllback.onClick(this)));
    } else {
        parentCard.getCardBody().findViewById(R.id.btn_no).setOnClickListener(v -> this.dismiss());
    }
}

EmployeeSpinnerAdapter

public class EmployeeSpinnerAdapter extends ArrayAdapter<Employee> {

private Map<String, ColorStateList> employeeColors;

private List<Employee> employees;

private RandomMaterialColor randomColor;

public EmployeeSpinnerAdapter(Context context, List<Employee> employees) {
    super(context, R.layout.employee_spinner, employees);
    setDropDownViewResource(R.layout.employee_spinner);
    this.employees = employees;
    this.employeeColors = new HashMap<>();
}

private class ViewHolder {

    private GradientDrawable background;
    private TextView header;
    private TablePart idField;

    private ViewHolder(View view) {
        if (randomColor == null) randomColor = new RandomMaterialColor(view.getResources(), view.getContext());
        ImageView iv = view.findViewById(R.id.icon_view);
        background = (GradientDrawable) iv.getBackground().mutate();
        header = view.findViewById(R.id.header);
        idField = view.findViewById(R.id.description);
    }

    private void populate(Employee employee) {
        header.setText(employee.getName());
        idField.update(employee.getId());
        ColorStateList color = employeeColors.getOrDefault(employee.getId(), ColorStateList.valueOf(randomColor.getMatColor("A700")));
        background.setColor(color);
    }

}

@Override
public int getCount() {
    return employees.size();
}

@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
    return obtainView(position, convertView, parent);
}

@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) 
{
    return obtainView(position, convertView, parent);
}

private View obtainView(int position, View convertView, ViewGroup parent) {
    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        convertView = mInflater.inflate(R.layout.employee_spinner, parent, false);
        convertView.setTag(new ViewHolder(convertView));
    }
    ViewHolder vh = (ViewHolder) convertView.getTag();
    vh.populate(employees.get(position));
    return convertView;
}
}

EmployeeSpinnerHandler 该类的目的是在对话框内和对话框外使用完全相同的代码处理Spinner，以查找错误。

public class EmployeeSpinnerHandler {

private Context context;

private Spinner spinner;

private EmployeeSpinnerAdapter adapter;

private List<Employee> employees;

public EmployeeSpinnerHandler(Context context, Spinner spinner, List<Employee> employees) {
    this.context = context;
    this.spinner = spinner;
    this.employees = employees;

    setUp();
}

private void setUp() {

    adapter = new EmployeeSpinnerAdapter(getContext(), employees);
    spinner.setAdapter(adapter);

    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            FancyToast.makeText(getContext(), "selected: " + employees.get(position).getName(), Toast.LENGTH_LONG, FancyToast.SUCCESS, true).show();
            //toggleYesBtn(true);
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {
            //toggleYesBtn(false);
            FancyToast.makeText(getContext(), "selected: none", Toast.LENGTH_LONG, FancyToast.SUCCESS, true).show();
        }
    });

}

public void updateObjects(List<Employee> employees) {
    this.employees.clear();
    this.employees.addAll(employees);
    adapter.notifyDataSetChanged();
}
}

普通片段内的微调框

spinner = view.findViewById(R.id.employeeSpinner);
    EmployeeSpinnerHandler spinnerHandler = new EmployeeSpinnerHandler(getContext(), spinner, objects);

注意：：在某些情况下，该日期是从REST-Api中获取的，但仍然只能在常规Fragment中使用。

现在的问题是，如果我在普通片段中的Spinner上使用EmployeeSpinnerHandler可以工作，但是如果我在选择对话框中使用Spinner，则可以单击Spinner并显示项目，但是它们可选arent（请参见图片）。

图片：

Custom Dialog with Spinner

Popup from Spinner in custom Dialog, were you can see the data is present, but if clicked it only closes the popup view

Spinner Working inside the Normal Fragment

Answer 1

适配器允许单焦点视图使android:focusable="false"成为您的TextView的所有其他项android:focusable="true"，其中包含将起作用的标题。

Answer 2

如果以下代码返回一个项目，则似乎缺少视觉更新： FancyToast.makeText（getContext（），“ selected：” + employee.get（position）.getName（），Toast.LENGTH_LONG，FancyToast.SUCCESS，true）.show（）;

在这种情况下，我建议添加 spinner.setSelection（position）

微调框无法在自定义对话框中运行-为什么？

2 个答案: