Java 如何使号码选择器不可取消?
如何使Android中的数字选择器不可取消?这是我的代码:Java 如何使号码选择器不可取消?,java,android,Java,Android,如何使Android中的数字选择器不可取消?这是我的代码: public static class NumberPickerDialog extends DialogFragment { private NumberPicker.OnValueChangeListener valueChangeListener; int min, max, current; String title; NumberPickerDialog(int min, int max, S
public static class NumberPickerDialog extends DialogFragment
{
private NumberPicker.OnValueChangeListener valueChangeListener;
int min, max, current;
String title;
NumberPickerDialog(int min, int max, String title, int current)
{
this.min = min;
this.max = max;
this.title = title;
this.current = current;
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState)
{
final NumberPicker numberPicker = new NumberPicker(getActivity());
numberPicker.setMinValue(min);
numberPicker.setMaxValue(max);
numberPicker.setValue(current);
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(title);
builder.setCancelable(false); //this doesn't work
builder.setPositiveButton("OK", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
valueChangeListener.onValueChange(numberPicker,
numberPicker.getValue(), numberPicker.getValue());
}
});
builder.setView(numberPicker);
return builder.create();
}
void setValueChangeListener(NumberPicker.OnValueChangeListener valueChangeListener)
{
this.valueChangeListener = valueChangeListener;
}
}
如何设置此对话框在用户不选择数字的情况下始终处于活动状态?可取消选项适用于其他格式,但不适用于数字选择器。组件有问题吗?它工作正常!谢谢:D但是你能解释一下为什么“builder.setCancelable(false);”不起作用?生成器。可设置取消(false);是工作,但在对话片段中。您需要禁用cancel DialogFragment
new NumberPickerDialog().setCancelable(false);