我想禁用日期选择器中的某一天 我有一个数组存储我想要禁用的日期。
我有这个代码来禁用日历中的日期
for (Calendar loopdate = min_date_c;
min_date_c.before(max_date_c);
min_date_c.add(Calendar.DATE, 1), loopdate = min_date_c) {
int dayOfWeek = loopdate.get(Calendar.DAY_OF_WEEK);
if (dayOfWeek == Calendar.SATURDAY || dayOfWeek == Calendar.FRIDAY) {
Calendar[] disabledDays = new Calendar[1];
disabledDays[0] = loopdate;
datePickerDialog.setDisabledDays(disabledDays);
}
}
我尝试使用此代码来禁用数组列表中存储的日期，但它不起作用。它仅禁用数组列表中的第一项
ArrayList a=new ArrayList();
a.add(1); //saturday
a.add(2); //sunday
a.add(3); //monday
int day;
for(int i=0; i<a.size();i++) {
day=(Integer)a.get(i);
for (Calendar loopdate = min_date_c;
min_date_c.before(max_date_c);
min_date_c.add(Calendar.DATE, 1), loopdate = min_date_c) {
int dayOfWeek = loopdate.get(Calendar.DAY_OF_WEEK);
if (day == 1) {
System.out.println(day);
if (dayOfWeek == Calendar.SATURDAY || dayOfWeek == Calendar.FRIDAY) {
Calendar[] disabledDays = new Calendar[1];
disabledDays[0] = loopdate;
datePickerDialog.setDisabledDays(disabledDays);
}
}
else if (day==2) {
System.out.println(day);
if (dayOfWeek == Calendar.SUNDAY || dayOfWeek == Calendar.FRIDAY) {
Calendar[] disabledDays = new Calendar[1];
disabledDays[0] = loopdate;
datePickerDialog.setDisabledDays(disabledDays);
}
}
else if (day==3) {
System.out.println(day);
if (dayOfWeek == Calendar.MONDAY || dayOfWeek == Calendar.FRIDAY) {
Calendar[] disabledDays = new Calendar[1];
disabledDays[0] = loopdate;
datePickerDialog.setDisabledDays(disabledDays);
}
}
}
我该如何解决？
您可以使用材料设计组件MaterialDatePicker更轻松、更高效地控制日历；它允许您通过实施来控制日历的每一天CalendarConstraints.DateValidator界面。
具体来说，在您的问题中，您需要禁用特定日期；因此，您将创建一个实现的类CalendarConstraints.DateValidator， 进而：
CalendarConstraints.DateValidator延伸Parcelable为了维持DateValidator穿过 设备配置更改。Parcelable在之间传递时中断 流程。
isValid(long date)验证每个日期的方法
在日历中并返回boolean表明这是否
日期是否有效，或者日期是否有效，或者日期是否启用或禁用/变暗；因此，如果日期有效，则返回 true，并且该日期将可供用户选择。下面，我将提供一个禁用的验证器Mondays in Feb.2020;您可以以相同的方式轻松禁用任何一天。
实施CalendarConstraints.DateValidator:
static class MondaysOutValidator implements CalendarConstraints.DateValidator {
int mYear, mMonth, mDayOfWeek;
MondaysOutValidator(int year, int month, int dayOfWeek) {
mYear = year;
mMonth = month;
mDayOfWeek = dayOfWeek;
}
MondaysOutValidator(Parcel parcel) {
mYear = parcel.readInt();
mMonth = parcel.readInt();
mDayOfWeek = parcel.readInt();
}
@Override
public boolean isValid(long date) {
List<Integer> allXDayOfMonth = getAllXDayOfMonth(mYear, mMonth, mDayOfWeek);
boolean isValidDays = false;
for (int xDay : allXDayOfMonth) {
Calendar calendarStart = Calendar.getInstance();
Calendar calendarEnd = Calendar.getInstance();
ArrayList<Long> minDate = new ArrayList<>();
ArrayList<Long> maxDate = new ArrayList<>();
calendarStart.set(mYear, mMonth, xDay - 1);
calendarEnd.set(mYear, mMonth, xDay);
minDate.add(calendarStart.getTimeInMillis());
maxDate.add(calendarEnd.getTimeInMillis());
isValidDays = isValidDays || !(minDate.get(0) > date || maxDate.get(0) < date);
}
return !isValidDays;
}
private static int getFirstXDayOfMonth(int year, int month, int dayOfWeek) {
Calendar cacheCalendar = Calendar.getInstance();
cacheCalendar.set(Calendar.DAY_OF_WEEK, dayOfWeek);
cacheCalendar.set(Calendar.DAY_OF_WEEK_IN_MONTH, 1);
cacheCalendar.set(Calendar.MONTH, month);
cacheCalendar.set(Calendar.YEAR, year);
return cacheCalendar.get(Calendar.DATE);
}
private static List<Integer> getAllXDayOfMonth(int year, int month, int dayOfWeek) {
final int ONE_WEEK = 7;
int firstDay = getFirstXDayOfMonth(year, month, dayOfWeek);
List<Integer> xDays = new ArrayList<>();
xDays.add(firstDay);
Calendar calendar = new GregorianCalendar(year, month, firstDay);
calendar.add(Calendar.DAY_OF_MONTH, ONE_WEEK); // adding 1 Week
while (calendar.get(Calendar.MONTH) == month) {
xDays.add(calendar.get(Calendar.DAY_OF_MONTH));
calendar.add(Calendar.DAY_OF_MONTH, ONE_WEEK); // adding 1 Week
}
return xDays;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mYear);
dest.writeInt(mMonth);
dest.writeInt(mDayOfWeek);
}
public static final Parcelable.Creator<MondaysOutValidator> CREATOR = new Parcelable.Creator<MondaysOutValidator>() {
@Override
public MondaysOutValidator createFromParcel(Parcel parcel) {
return new MondaysOutValidator(parcel);
}
@Override
public MondaysOutValidator[] newArray(int size) {
return new MondaysOutValidator[size];
}
};
}
然后使用这个验证器来构建CalendarConstraints为了将这些限制应用于日历日期
/*
* Limit selectable range to days other than Mondays of the month
*/
private CalendarConstraints.Builder mondayDisableConstraints() {
CalendarConstraints.Builder constraintsBuilderRange = new CalendarConstraints.Builder();
constraintsBuilderRange.setValidator(new MondaysOutValidator(2020, Calendar.FEBRUARY, Calendar.MONDAY));
return constraintsBuilderRange;
}
最后建立你的MaterialDatePicker在你的活动/片段中
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
MaterialDatePicker.Builder<Long> builderRange = MaterialDatePicker.Builder.datePicker();
builderRange.setCalendarConstraints(mondayDisableConstraints().build());
builderRange.setTitleText("Select Date Range");
MaterialDatePicker<Long> pickerRange = builderRange.build();
pickerRange.show(getSupportFragmentManager(), pickerRange.toString());
}
这是输出：
希望对您有所帮助，也欢迎您进一步支持。