Question

我遇到了m_schedules.get(0).getWeeklyScheduleSet().remove(day);行的问题我无法移除Integer som Set<>

remove函数返回true。如果我问它是否包含对象，则该set返回true。但它根本不会删除它。所以我不知道如何解决这个问题。

private void setupToggleDays() {
        ViewGroup daysToggleHolder = (ViewGroup) findViewById(R.id.activity_geofence_schedule_days_holder);
        m_daysToggleButtons = new ToggleButton[7];

        Calendar cal = Calendar.getInstance();
        int currWeekDayIndex = cal.getFirstDayOfWeek();

        for (int i = 0; i < 7; i++) {
          final int day = currWeekDayIndex;
          ToggleButton dayToggleButton = (ToggleButton) daysToggleHolder.getChildAt(i);
          m_daysToggleButtons[i] = dayToggleButton;
          dayToggleButton.setChecked(m_schedules.get(0).getWeeklyScheduleSet().contains(day));

          dayToggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
              if(isChecked){
                m_schedules.get(0).getWeeklyScheduleSet().add(day);
              }
              else {
                m_schedules.get(0).getWeeklyScheduleSet().remove(day);
              }
            }
          });
          currWeekDayIndex = (currWeekDayIndex % 7) + 1;
        }
      }

Answer 1

day是一个局部变量，您在某个事件中从Set中删除值，因此day值不是您在方法中设置的值。所以尽量把日子作为场地

无法从Set中删除Integer

1 个答案: