Select Android DatePickerDialog 中的多个日期
Select multiple dates in Android DatePickerDialog
我需要 select 来自 Android DatePickerDialog 的多个日期。下面是我的片段。有了这个，我只能 select 一次约会。我见过其他库，例如 https://github.com/square/android-times-square。但是，我对原生 Android 代码更感兴趣。
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
val currentDate = Calendar.getInstance()
val year = currentDate.get(Calendar.YEAR)
val month = currentDate.get(Calendar.MONTH)
val day = currentDate.get(Calendar.DAY_OF_MONTH)
val maxDate = Calendar.getInstance()
maxDate.add(Calendar.MONTH, 3)
val datePickerDialog = DatePickerDialog(activity, onDateSet, year, month, day)
datePickerDialog.datePicker.minDate = currentDate.timeInMillis
datePickerDialog.datePicker.maxDate = maxDate.timeInMillis
return datePickerDialog
}
Android 到目前为止不支持此功能。但是，您可以创建自己的日历。我有同样的要求并且已经做到了。请注意，我不允许用户 select 任何日期。但用户可以 select 自定义日期。我创建了一个仅更改月份的片段，因此它会在更改月份时更改适配器。
public class CalendarFragment extends DialogFragment {
private final String TAG = CalendarFragment.class.getSimpleName();
private static CalendarFragment instance;
private View view;
private ImageView ivDecrementMonth, ivIncrementMonth;
private TextView btnOk, btnCancel;
public TextView tvMonthYear;
private int counter = 0;
private int year = 2017;
private static CalendarActivity INSTANCE;
private Calendar calendarMinimumDate, calendarMaximumDate;
private GridView gridCalendarView;
private ArrayList<EventDateSelectionBean> listEventDates;
private String from;
public static final String KEY_EVENT_DATES = "key event dates";
public static final String KEY_FROM = "key from";
public static final String FROM_ANNOUNCEMENT_ACTIVITY = "from announcement activity";
public static final String FROM_BOOKING_DIALOG = "from booking dialog";
private List<String> listMonths;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Dialog dialog = super.onCreateDialog(savedInstanceState);
WindowManager.LayoutParams wlmp = dialog.getWindow().getAttributes();
wlmp.gravity = Gravity.CENTER | Gravity.FILL_HORIZONTAL;
wlmp.dimAmount = 0.0F;
dialog.getWindow().setAttributes(wlmp);
dialog.getWindow().setWindowAnimations(R.style.DialogTheme);
dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
return dialog;
}
//End of onCreateDialog()
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view == null) {
instance = this;
view = inflater.inflate(R.layout.activity_calendar, container);
findViewsId();
setData();
setClickListeners();
}
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) view.getLayoutParams();
return view;
}
//End of onCreateView()
private void findViewsId() {
ivDecrementMonth = (ImageView) view.findViewById(R.id.ivDecrementMonth);
ivIncrementMonth = (ImageView) view.findViewById(R.id.ivIncrementMonth);
gridCalendarView = (GridView) view.findViewById(R.id.calendar);
tvMonthYear = (TextView) view.findViewById(R.id.tvMonthYear);
btnOk = (TextView) view.findViewById(R.id.btnOk);
btnCancel = (TextView) view.findViewById(R.id.btnCancel);
}
//End of findViewsId()
private void setData() {
listMonths = Arrays.asList(getResources().getStringArray(R.array.months));
Bundle bundle = getArguments();
calendarMinimumDate = Calendar.getInstance();
calendarMinimumDate.setTimeInMillis(System.currentTimeMillis());
calendarMaximumDate = Calendar.getInstance();
calendarMaximumDate.setTimeInMillis(System.currentTimeMillis());
btnOk.setText(getString(R.string.ok));
btnCancel.setText(getString(R.string.cancel));
listEventDates = bundle.getParcelableArrayList(KEY_EVENT_DATES);
from = bundle.getString(KEY_FROM);
//setMinMaxDateCalendar();
counter = calendarMinimumDate.get(Calendar.MONTH);
year = calendarMinimumDate.get(Calendar.YEAR);
tvMonthYear.setText(listMonths.get(counter) + " " + year);
MyCalendarAdapter adapter = new MyCalendarAdapter(GoToTourActivity.getInstance(),
listEventDates, counter, year);
gridCalendarView.setAdapter(adapter);
}
//End of setData()
private void setClickListeners() {
btnOk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (from.equals(FROM_ANNOUNCEMENT_ACTIVITY)) {
GoToTourActivity.getInstance().setDate(listEventDates);
} else if (from.equals(FROM_BOOKING_DIALOG)) {
BookDialogs.getInstance().setDate(listEventDates);
}
dismiss();
}
});
btnCancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dismiss();
}
});
ivDecrementMonth.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (counter == 0) {
counter = listMonths.size() - 1;
year = year - 1;
} else {
counter--;
}
tvMonthYear.setText(listMonths.get(counter) + " " + year);
updateCalendar();
}
});
ivIncrementMonth.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (counter == (listMonths.size() - 1)) {
counter = 0;
year = year + 1;
} else {
counter++;
}
tvMonthYear.setText(listMonths.get(counter) + " " + year);
updateCalendar();
}
});
}
//End of setClickListeners()
private void updateCalendar() {
MyCalendarAdapter adapter = new MyCalendarAdapter(GoToTourActivity.getInstance(),
listEventDates, counter, year);
gridCalendarView.setAdapter(adapter);
}
//End of updateCalendar()
}
//这里是Fragment Calendar的布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mainlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
android:background="#FFF"
android:gravity="center"
android:orientation="horizontal"
android:weightSum="1">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.2"
android:background="#FFF"
android:gravity="center"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/llPrev"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="@dimen/margin">
<ImageButton
android:id="@+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="2dp"
android:padding="1dp"
android:src="@drawable/slide_right" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.6"
android:gravity="center">
<TextView
android:id="@+id/tvMonthYear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="DECEMBER 2017"
android:textAllCaps="false"
android:textColor="#000"
android:textSize="22dp" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.2"
android:background="#FFF"
android:gravity="center"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/llNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="@dimen/margin">
<ImageButton
android:id="@+id/forw"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="2dp"
android:padding="1dp"
android:rotation="180"
android:src="@drawable/slide_right" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/llcalender"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9"
android:background="#FFF">
<GridView
android:id="@+id/calgrid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:numColumns="7">
</GridView>
</LinearLayout>
而最重要的部分是 Gridview Adapter。通读代码并尝试理解，没有任何问题会困扰您。但是，如果您有任何问题。请评论。
public MyCalendarAdapter(Context context, ArrayList<EventDateSelectionBean> listEvents, int month, int year) {
super();
this._context = context;
dateDefaultTextColor = context.getResources().getColor(R.color.calendar_date_default_text_color);
dateInEventTextColor = context.getResources().getColor(R.color.calendar_date_in_event_text_color);
dateInEventSelectedTextColor = context.getResources().getColor(R.color.calendar_date_in_event_selected_text_color);
this.list = new ArrayList<>();
Calendar calendar = Calendar.getInstance();
setCurrentDayOfMonth(calendar.get(Calendar.DAY_OF_MONTH));
setCurrentWeekDay(calendar.get(Calendar.DAY_OF_WEEK));
this.listEvents = listEvents;
currentMonth = month;
currentYear = year;
// Print Month
printMonth(month, year);
eventCalendar = Calendar.getInstance();
eventCalendar.setTimeInMillis(System.currentTimeMillis());
currentDayCalendar = Calendar.getInstance();
currentDayCalendar.setTimeInMillis(System.currentTimeMillis());
currentDayCalendar.set(Calendar.MONTH, currentMonth);
currentDayCalendar.set(Calendar.YEAR, currentYear);
}
private String getMonthAsString(int i) {
return months[i];
}
private int getNumberOfDaysOfMonth(int i) {
if (currentYear % 4 == 0 && i == 1) {
return daysOfMonth[i] + 1;
} else {
return daysOfMonth[i];
}
}
public String getItem(int position) {
return list.get(position);
}
@Override
public int getCount() {
return list.size();
}
private void printMonth(int mm, int yyyy) {
int trailingSpaces = 0;
int daysInPrevMonth = 0;
int prevMonth = 0;
int prevYear = 0;
int nextMonth = 0;
int nextYear = 0;
int currentMonth = mm/* - 1*/;
daysInMonth = getNumberOfDaysOfMonth(currentMonth);
// Gregorian Calendar : MINUS 1, set to FIRST OF MONTH
GregorianCalendar cal = new GregorianCalendar(yyyy, currentMonth, 1);
if (currentMonth == 11) {
prevMonth = currentMonth - 1;
daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth);
nextMonth = 0;
prevYear = yyyy;
nextYear = yyyy + 1;
} else if (currentMonth == 0) {
prevMonth = 11;
prevYear = yyyy - 1;
nextYear = yyyy;
daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth);
nextMonth = 1;
} else {
prevMonth = currentMonth - 1;
nextMonth = currentMonth + 1;
nextYear = yyyy;
prevYear = yyyy;
daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth);
}
int currentWeekDay = cal.get(Calendar.DAY_OF_WEEK) - 1;
trailingSpaces = currentWeekDay;
// Trailing Month days
for (int i = 0; i < trailingSpaces; i++) {
list.add(String.valueOf((daysInPrevMonth - trailingSpaces + DAY_OFFSET) + i) + "-GREY" + "-" + getMonthAsString(prevMonth) + "-" + prevYear);
}
// Current Month Days
for (int i = 1; i <= daysInMonth; i++) {
if (i == getCurrentDayOfMonth())
list.add(String.valueOf(i) + "-BLUE" + "-" + getMonthAsString(currentMonth) + "-" + yyyy);
else
list.add(String.valueOf(i) + "-WHITE" + "-" + getMonthAsString(currentMonth) + "-" + yyyy);
}
// Leading Month days
for (int i = 0; i < list.size() % 7; i++) {
list.add(String.valueOf(i + 1) + "-GREY" + "-" + getMonthAsString(nextMonth) + "-" + nextYear);
}
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//Blue - Current Day
//White - Current Month
//Grey - Next Month
final ViewHolder holder;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) _context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.calendar_day_gridcell, parent, false);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
// ACCOUNT FOR SPACING
String[] day_color = list.get(position).split("-");
String theday = day_color[0];
// Set the Day GridCell
holder.btnDate.setText(theday);
if (day_color[1].equals("WHITE") || day_color[1].equals("BLUE")) { //For Current Month
holder.btnDate.setTextColor(dateDefaultTextColor);
holder.btnDate.setBackgroundResource(R.drawable.date_default_bg);
currentDayCalendar.set(Calendar.DAY_OF_MONTH, Integer.valueOf(theday));
for (int i = 0; i < listEvents.size(); i++) {
EventDateSelectionBean eventDate = listEvents.get(i);
setDataInEventCalendar(eventDate.getDate());
if(Commons.checkDateEquality(currentDayCalendar, eventCalendar)) {
final EventDateSelectionBean finalEventDate = eventDate;
if(finalEventDate.isSelected()) {
holder.btnDate.setBackgroundResource(R.drawable.date_selected_bg);
holder.btnDate.setTextColor(dateInEventSelectedTextColor);
} else {
holder.btnDate.setBackgroundResource(R.drawable.date_unselected);
holder.btnDate.setTextColor(dateInEventTextColor);
}
holder.btnDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(finalEventDate.isSelected()) {
finalEventDate.setSelected(false);
holder.btnDate.setBackgroundResource(R.drawable.date_unselected);
holder.btnDate.setTextColor(dateInEventTextColor);
} else {
finalEventDate.setSelected(true);
holder.btnDate.setBackgroundResource(R.drawable.date_selected_bg);
holder.btnDate.setTextColor(dateInEventSelectedTextColor);
}
}
});
break;
}
}
} else { //For Previous and next month dates
holder.btnDate.setAlpha(0.4f);
holder.btnDate.setBackgroundResource(R.drawable.date_default_bg);
//holder.btnDate.setVisibility(View.INVISIBLE);
holder.llBtnParent.setVisibility(View.INVISIBLE);
}
if (position == list.size() - 1) {
//Set Default data
}
return convertView;
}
//End of getView()
public class ViewHolder {
Button btnDate;
LinearLayout llBtnParent;
public ViewHolder(View view) {
btnDate = (Button) view.findViewById(R.id.calendar_day_gridcell);
llBtnParent = (LinearLayout) view.findViewById(R.id.llBtnParent);
}
}
public int getCurrentDayOfMonth() {
return currentDayOfMonth;
}
private void setCurrentDayOfMonth(int currentDayOfMonth) {
this.currentDayOfMonth = currentDayOfMonth;
}
public void setCurrentWeekDay(int currentWeekDay) {
this.currentWeekDay = currentWeekDay;
}
private void setDataInEventCalendar(String date) {
String splittedDate[] = date.split("-");
eventCalendar.set(Calendar.YEAR, Integer.valueOf(splittedDate[0]));
eventCalendar.set(Calendar.MONTH, (Integer.valueOf(splittedDate[1]) - 1));
eventCalendar.set(Calendar.DAY_OF_MONTH, Integer.valueOf(splittedDate[2]));
}
//End of setDataInEventCalendar()
}
适配器布局为
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_margin="1dp"
android:background="@android:color/transparent"
android:id="@+id/llBtnParent">
<LinearLayout
android:layout_width="44dp"
android:layout_height="44dp"
android:layout_margin="1dp"
android:background="@drawable/day_calendar"
android:padding="1dp"
android:gravity="center">
<com.yaashvi.placeandpeople.customviews.AttendanceButton
android:id="@+id/calendar_day_gridcell"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_width="40dp"
android:layout_height="40dp"
android:text="1"
android:gravity="left"
android:paddingLeft="2dp"
android:textSize="12sp"/>
</LinearLayout>
输出就是这样。
此外，您可以尝试我目前在自己的项目中完成的这个存储库
我需要 select 来自 Android DatePickerDialog 的多个日期。下面是我的片段。有了这个，我只能 select 一次约会。我见过其他库，例如 https://github.com/square/android-times-square。但是，我对原生 Android 代码更感兴趣。
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
val currentDate = Calendar.getInstance()
val year = currentDate.get(Calendar.YEAR)
val month = currentDate.get(Calendar.MONTH)
val day = currentDate.get(Calendar.DAY_OF_MONTH)
val maxDate = Calendar.getInstance()
maxDate.add(Calendar.MONTH, 3)
val datePickerDialog = DatePickerDialog(activity, onDateSet, year, month, day)
datePickerDialog.datePicker.minDate = currentDate.timeInMillis
datePickerDialog.datePicker.maxDate = maxDate.timeInMillis
return datePickerDialog
}
Android 到目前为止不支持此功能。但是，您可以创建自己的日历。我有同样的要求并且已经做到了。请注意，我不允许用户 select 任何日期。但用户可以 select 自定义日期。我创建了一个仅更改月份的片段，因此它会在更改月份时更改适配器。
public class CalendarFragment extends DialogFragment {
private final String TAG = CalendarFragment.class.getSimpleName();
private static CalendarFragment instance;
private View view;
private ImageView ivDecrementMonth, ivIncrementMonth;
private TextView btnOk, btnCancel;
public TextView tvMonthYear;
private int counter = 0;
private int year = 2017;
private static CalendarActivity INSTANCE;
private Calendar calendarMinimumDate, calendarMaximumDate;
private GridView gridCalendarView;
private ArrayList<EventDateSelectionBean> listEventDates;
private String from;
public static final String KEY_EVENT_DATES = "key event dates";
public static final String KEY_FROM = "key from";
public static final String FROM_ANNOUNCEMENT_ACTIVITY = "from announcement activity";
public static final String FROM_BOOKING_DIALOG = "from booking dialog";
private List<String> listMonths;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Dialog dialog = super.onCreateDialog(savedInstanceState);
WindowManager.LayoutParams wlmp = dialog.getWindow().getAttributes();
wlmp.gravity = Gravity.CENTER | Gravity.FILL_HORIZONTAL;
wlmp.dimAmount = 0.0F;
dialog.getWindow().setAttributes(wlmp);
dialog.getWindow().setWindowAnimations(R.style.DialogTheme);
dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
return dialog;
}
//End of onCreateDialog()
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view == null) {
instance = this;
view = inflater.inflate(R.layout.activity_calendar, container);
findViewsId();
setData();
setClickListeners();
}
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) view.getLayoutParams();
return view;
}
//End of onCreateView()
private void findViewsId() {
ivDecrementMonth = (ImageView) view.findViewById(R.id.ivDecrementMonth);
ivIncrementMonth = (ImageView) view.findViewById(R.id.ivIncrementMonth);
gridCalendarView = (GridView) view.findViewById(R.id.calendar);
tvMonthYear = (TextView) view.findViewById(R.id.tvMonthYear);
btnOk = (TextView) view.findViewById(R.id.btnOk);
btnCancel = (TextView) view.findViewById(R.id.btnCancel);
}
//End of findViewsId()
private void setData() {
listMonths = Arrays.asList(getResources().getStringArray(R.array.months));
Bundle bundle = getArguments();
calendarMinimumDate = Calendar.getInstance();
calendarMinimumDate.setTimeInMillis(System.currentTimeMillis());
calendarMaximumDate = Calendar.getInstance();
calendarMaximumDate.setTimeInMillis(System.currentTimeMillis());
btnOk.setText(getString(R.string.ok));
btnCancel.setText(getString(R.string.cancel));
listEventDates = bundle.getParcelableArrayList(KEY_EVENT_DATES);
from = bundle.getString(KEY_FROM);
//setMinMaxDateCalendar();
counter = calendarMinimumDate.get(Calendar.MONTH);
year = calendarMinimumDate.get(Calendar.YEAR);
tvMonthYear.setText(listMonths.get(counter) + " " + year);
MyCalendarAdapter adapter = new MyCalendarAdapter(GoToTourActivity.getInstance(),
listEventDates, counter, year);
gridCalendarView.setAdapter(adapter);
}
//End of setData()
private void setClickListeners() {
btnOk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (from.equals(FROM_ANNOUNCEMENT_ACTIVITY)) {
GoToTourActivity.getInstance().setDate(listEventDates);
} else if (from.equals(FROM_BOOKING_DIALOG)) {
BookDialogs.getInstance().setDate(listEventDates);
}
dismiss();
}
});
btnCancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dismiss();
}
});
ivDecrementMonth.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (counter == 0) {
counter = listMonths.size() - 1;
year = year - 1;
} else {
counter--;
}
tvMonthYear.setText(listMonths.get(counter) + " " + year);
updateCalendar();
}
});
ivIncrementMonth.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (counter == (listMonths.size() - 1)) {
counter = 0;
year = year + 1;
} else {
counter++;
}
tvMonthYear.setText(listMonths.get(counter) + " " + year);
updateCalendar();
}
});
}
//End of setClickListeners()
private void updateCalendar() {
MyCalendarAdapter adapter = new MyCalendarAdapter(GoToTourActivity.getInstance(),
listEventDates, counter, year);
gridCalendarView.setAdapter(adapter);
}
//End of updateCalendar()
}
//这里是Fragment Calendar的布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mainlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
android:background="#FFF"
android:gravity="center"
android:orientation="horizontal"
android:weightSum="1">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.2"
android:background="#FFF"
android:gravity="center"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/llPrev"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="@dimen/margin">
<ImageButton
android:id="@+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="2dp"
android:padding="1dp"
android:src="@drawable/slide_right" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.6"
android:gravity="center">
<TextView
android:id="@+id/tvMonthYear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="DECEMBER 2017"
android:textAllCaps="false"
android:textColor="#000"
android:textSize="22dp" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.2"
android:background="#FFF"
android:gravity="center"
android:orientation="horizontal">
<LinearLayout
android:id="@+id/llNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="@dimen/margin">
<ImageButton
android:id="@+id/forw"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="2dp"
android:padding="1dp"
android:rotation="180"
android:src="@drawable/slide_right" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/llcalender"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9"
android:background="#FFF">
<GridView
android:id="@+id/calgrid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:numColumns="7">
</GridView>
</LinearLayout>
而最重要的部分是 Gridview Adapter。通读代码并尝试理解，没有任何问题会困扰您。但是，如果您有任何问题。请评论。
public MyCalendarAdapter(Context context, ArrayList<EventDateSelectionBean> listEvents, int month, int year) {
super();
this._context = context;
dateDefaultTextColor = context.getResources().getColor(R.color.calendar_date_default_text_color);
dateInEventTextColor = context.getResources().getColor(R.color.calendar_date_in_event_text_color);
dateInEventSelectedTextColor = context.getResources().getColor(R.color.calendar_date_in_event_selected_text_color);
this.list = new ArrayList<>();
Calendar calendar = Calendar.getInstance();
setCurrentDayOfMonth(calendar.get(Calendar.DAY_OF_MONTH));
setCurrentWeekDay(calendar.get(Calendar.DAY_OF_WEEK));
this.listEvents = listEvents;
currentMonth = month;
currentYear = year;
// Print Month
printMonth(month, year);
eventCalendar = Calendar.getInstance();
eventCalendar.setTimeInMillis(System.currentTimeMillis());
currentDayCalendar = Calendar.getInstance();
currentDayCalendar.setTimeInMillis(System.currentTimeMillis());
currentDayCalendar.set(Calendar.MONTH, currentMonth);
currentDayCalendar.set(Calendar.YEAR, currentYear);
}
private String getMonthAsString(int i) {
return months[i];
}
private int getNumberOfDaysOfMonth(int i) {
if (currentYear % 4 == 0 && i == 1) {
return daysOfMonth[i] + 1;
} else {
return daysOfMonth[i];
}
}
public String getItem(int position) {
return list.get(position);
}
@Override
public int getCount() {
return list.size();
}
private void printMonth(int mm, int yyyy) {
int trailingSpaces = 0;
int daysInPrevMonth = 0;
int prevMonth = 0;
int prevYear = 0;
int nextMonth = 0;
int nextYear = 0;
int currentMonth = mm/* - 1*/;
daysInMonth = getNumberOfDaysOfMonth(currentMonth);
// Gregorian Calendar : MINUS 1, set to FIRST OF MONTH
GregorianCalendar cal = new GregorianCalendar(yyyy, currentMonth, 1);
if (currentMonth == 11) {
prevMonth = currentMonth - 1;
daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth);
nextMonth = 0;
prevYear = yyyy;
nextYear = yyyy + 1;
} else if (currentMonth == 0) {
prevMonth = 11;
prevYear = yyyy - 1;
nextYear = yyyy;
daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth);
nextMonth = 1;
} else {
prevMonth = currentMonth - 1;
nextMonth = currentMonth + 1;
nextYear = yyyy;
prevYear = yyyy;
daysInPrevMonth = getNumberOfDaysOfMonth(prevMonth);
}
int currentWeekDay = cal.get(Calendar.DAY_OF_WEEK) - 1;
trailingSpaces = currentWeekDay;
// Trailing Month days
for (int i = 0; i < trailingSpaces; i++) {
list.add(String.valueOf((daysInPrevMonth - trailingSpaces + DAY_OFFSET) + i) + "-GREY" + "-" + getMonthAsString(prevMonth) + "-" + prevYear);
}
// Current Month Days
for (int i = 1; i <= daysInMonth; i++) {
if (i == getCurrentDayOfMonth())
list.add(String.valueOf(i) + "-BLUE" + "-" + getMonthAsString(currentMonth) + "-" + yyyy);
else
list.add(String.valueOf(i) + "-WHITE" + "-" + getMonthAsString(currentMonth) + "-" + yyyy);
}
// Leading Month days
for (int i = 0; i < list.size() % 7; i++) {
list.add(String.valueOf(i + 1) + "-GREY" + "-" + getMonthAsString(nextMonth) + "-" + nextYear);
}
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//Blue - Current Day
//White - Current Month
//Grey - Next Month
final ViewHolder holder;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) _context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.calendar_day_gridcell, parent, false);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
// ACCOUNT FOR SPACING
String[] day_color = list.get(position).split("-");
String theday = day_color[0];
// Set the Day GridCell
holder.btnDate.setText(theday);
if (day_color[1].equals("WHITE") || day_color[1].equals("BLUE")) { //For Current Month
holder.btnDate.setTextColor(dateDefaultTextColor);
holder.btnDate.setBackgroundResource(R.drawable.date_default_bg);
currentDayCalendar.set(Calendar.DAY_OF_MONTH, Integer.valueOf(theday));
for (int i = 0; i < listEvents.size(); i++) {
EventDateSelectionBean eventDate = listEvents.get(i);
setDataInEventCalendar(eventDate.getDate());
if(Commons.checkDateEquality(currentDayCalendar, eventCalendar)) {
final EventDateSelectionBean finalEventDate = eventDate;
if(finalEventDate.isSelected()) {
holder.btnDate.setBackgroundResource(R.drawable.date_selected_bg);
holder.btnDate.setTextColor(dateInEventSelectedTextColor);
} else {
holder.btnDate.setBackgroundResource(R.drawable.date_unselected);
holder.btnDate.setTextColor(dateInEventTextColor);
}
holder.btnDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(finalEventDate.isSelected()) {
finalEventDate.setSelected(false);
holder.btnDate.setBackgroundResource(R.drawable.date_unselected);
holder.btnDate.setTextColor(dateInEventTextColor);
} else {
finalEventDate.setSelected(true);
holder.btnDate.setBackgroundResource(R.drawable.date_selected_bg);
holder.btnDate.setTextColor(dateInEventSelectedTextColor);
}
}
});
break;
}
}
} else { //For Previous and next month dates
holder.btnDate.setAlpha(0.4f);
holder.btnDate.setBackgroundResource(R.drawable.date_default_bg);
//holder.btnDate.setVisibility(View.INVISIBLE);
holder.llBtnParent.setVisibility(View.INVISIBLE);
}
if (position == list.size() - 1) {
//Set Default data
}
return convertView;
}
//End of getView()
public class ViewHolder {
Button btnDate;
LinearLayout llBtnParent;
public ViewHolder(View view) {
btnDate = (Button) view.findViewById(R.id.calendar_day_gridcell);
llBtnParent = (LinearLayout) view.findViewById(R.id.llBtnParent);
}
}
public int getCurrentDayOfMonth() {
return currentDayOfMonth;
}
private void setCurrentDayOfMonth(int currentDayOfMonth) {
this.currentDayOfMonth = currentDayOfMonth;
}
public void setCurrentWeekDay(int currentWeekDay) {
this.currentWeekDay = currentWeekDay;
}
private void setDataInEventCalendar(String date) {
String splittedDate[] = date.split("-");
eventCalendar.set(Calendar.YEAR, Integer.valueOf(splittedDate[0]));
eventCalendar.set(Calendar.MONTH, (Integer.valueOf(splittedDate[1]) - 1));
eventCalendar.set(Calendar.DAY_OF_MONTH, Integer.valueOf(splittedDate[2]));
}
//End of setDataInEventCalendar()
}
适配器布局为
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_margin="1dp"
android:background="@android:color/transparent"
android:id="@+id/llBtnParent">
<LinearLayout
android:layout_width="44dp"
android:layout_height="44dp"
android:layout_margin="1dp"
android:background="@drawable/day_calendar"
android:padding="1dp"
android:gravity="center">
<com.yaashvi.placeandpeople.customviews.AttendanceButton
android:id="@+id/calendar_day_gridcell"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_width="40dp"
android:layout_height="40dp"
android:text="1"
android:gravity="left"
android:paddingLeft="2dp"
android:textSize="12sp"/>
</LinearLayout>
输出就是这样。
此外，您可以尝试我目前在自己的项目中完成的这个存储库