做的是一个酒店的项目，可以选择入住和离开的日期。声明为了省事在网上找的资料，自己修改的逻辑，希望对需要的朋友有帮助。喜欢的给个好评。谢谢啦！祝生活愉快！
先上图
第一步，搭建布局xml
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/days_detail"
android:gravity="center"
android:padding="16dp"
android:text="选择住店离店日期"
android:textColor="@color/white"
android:textSize="18sp" />
<ImageView
android:id="@+id/back_to_up"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:src="@drawable/backto" />
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<View
android:layout_width="match_parent"
android:layout_height="30dp"
android:background="@color/days_detail" />
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_marginTop="20dp"
android:padding="10dp"
app:cardCornerRadius="10dp"
app:cardElevation="16dp">
<LinearLayout
android:id="@+id/ll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</android.support.v7.widget.CardView>
</FrameLayout>
</LinearLayout>
</ScrollView>
第二部在编写逻辑
LinearLayout ll;
MyCalendar c1;
Date date;
String nowday;
long nd = 1000 * 24L * 60L * 60L;//一天的毫秒数
SimpleDateFormat simpleDateFormat, sd1, sd2;
SharedPreferences sp;
SharedPreferences.Editor editor;
private String inday, outday//日期
sp_inday, sp_outday;//周几
Activity extends BaseActivity implements MyCalendar.OnDaySelectListener {继承BaseActivity实现点击日历的监听回调
private void init() {
List<String> listDate = getDateList();
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
for (int i = 0; i < listDate.size(); i++) {
c1 = new MyCalendar(this);
c1.setLayoutParams(params);
Date date = null;
try {
date = simpleDateFormat.parse(listDate.get(i));
} catch (ParseException e) {
e.printStackTrace();
}
if (!"".equals(sp_inday)) {
c1.setInDay(sp_inday);
}
if (!"".equals(sp_outday)) {
c1.setOutDay(sp_outday);
}
c1.setTheDay(date);
c1.setOnDaySelectListener(this);
ll.addView(c1);
}
}
@Override
public void onDaySelectListener(View view, String date) {
//若日历日期小于当前日期，或日历日期-当前日期超过三个月，则不能点击
try {
if (simpleDateFormat.parse(date).getTime() < simpleDateFormat.parse(nowday).getTime()) {
return;
}
long dayxc = (simpleDateFormat.parse(date).getTime() - simpleDateFormat.parse(nowday).getTime()) / nd;
if (dayxc > 90) {
return;
}
} catch (ParseException e) {
e.printStackTrace();
}
//若以前已经选择了日期，则在进入日历后会显示以选择的日期，该部分作用则是重新点击日历时，清空以前选择的数据（包括背景图案）
if (!"".equals(sp_inday)) {
c1.viewIn.setBackgroundColor(Color.WHITE);
((TextView) c1.viewIn.findViewById(R.id.tv_calendar_day)).setTextColor(Color.BLACK);
((TextView) c1.viewIn.findViewById(R.id.tv_calendar)).setText("");
}
if (!"".equals(sp_outday)) {
c1.viewOut.setBackgroundColor(Color.WHITE);
((TextView) c1.viewOut.findViewById(R.id.tv_calendar_day)).setTextColor(Color.BLACK);
((TextView) c1.viewOut.findViewById(R.id.tv_calendar)).setText("");
}
String dateDay = date.split("-")[2];
if (Integer.parseInt(dateDay) < 10) {
dateDay = date.split("-")[2].replace("0", "");
}
TextView textDayView = (TextView) view.findViewById(R.id.tv_calendar_day);
TextView textView = (TextView) view.findViewById(R.id.tv_calendar);
view.setBackgroundColor(Color.parseColor("#33B5E5"));
textDayView.setTextColor(Color.WHITE);
if (null == inday || inday.equals("")) {
textDayView.setText(dateDay);
textView.setText("入住");
inday = date;
} else {
if (inday.equals(date)) {
view.setBackgroundColor(Color.WHITE);
textDayView.setText(dateDay);
textDayView.setTextColor(Color.BLACK);
textView.setText("");
inday = "";
} else {
try {
if (simpleDateFormat.parse(date).getTime() < simpleDateFormat.parse(inday).getTime()) {
view.setBackgroundColor(Color.WHITE);
textDayView.setTextColor(Color.BLACK);
Toast.makeText(CalendarActivity.this, "离开日期不能小于入住日期", Toast.LENGTH_SHORT).show();
return;
}
} catch (ParseException e) {
e.printStackTrace();
}
textDayView.setText(dateDay);
textView.setText("离开");
outday = date;
editor.putString("dateIn", inday);
editor.putString("dateOut", outday);
editor.commit();
finish();
}
}
}
//根据当前日期，向后数三个月（若当前day不是1号，为满足至少90天，则需要向后数4个月）
@SuppressLint("SimpleDateFormat")
public List<String> getDateList() {
List<String> list = new ArrayList<String>();
Date date = new Date();
int nowMon = date.getMonth() + 1;
String yyyy = sd1.format(date);
String dd = sd2.format(date);
if (nowMon == 9) {
list.add(simpleDateFormat.format(date));
list.add(yyyy + "-10-" + dd);
list.add(yyyy + "-11-" + dd);
if (!dd.equals("01")) {
list.add(yyyy + "-12-" + dd);
}
} else if (nowMon == 10) {
list.add(yyyy + "-10-" + dd);
list.add(yyyy + "-11-" + dd);
list.add(yyyy + "-12-" + dd);
if (!dd.equals("01")) {
list.add((Integer.parseInt(yyyy) + 1) + "-01-" + dd);
}
} else if (nowMon == 11) {
list.add(yyyy + "-11-" + dd);
list.add(yyyy + "-12-" + dd);
list.add((Integer.parseInt(yyyy) + 1) + "-01-" + dd);
if (!dd.equals("01")) {
list.add((Integer.parseInt(yyyy) + 1) + "-02-" + dd);
}
} else if (nowMon == 12) {
list.add(yyyy + "-12-" + dd);
list.add((Integer.parseInt(yyyy) + 1) + "-01-" + dd);
list.add((Integer.parseInt(yyyy) + 1) + "-02-" + dd);
if (!dd.equals("01")) {
list.add((Integer.parseInt(yyyy) + 1) + "-03-" + dd);
}
} else {
list.add(yyyy + "-" + getMon(nowMon) + "-" + dd);
list.add(yyyy + "-" + getMon((nowMon + 1)) + "-" + dd);
list.add(yyyy + "-" + getMon((nowMon + 2)) + "-" + dd);
if (!dd.equals("01")) {
list.add(yyyy + "-" + getMon((nowMon + 3)) + "-" + dd);
}
}
return list;
}
public String getMon(int mon) {
String month = "";
if (mon < 10) {
month = "0" + mon;
} else {
month = "" + mon;
}
return month;
}
第三部 编写监听，自定义的控件
public class MyCalendar extends LinearLayout {
private static Context context;
private Date theInDay;
private String inday = "", outday = "";
public static View viewIn;
public static View viewOut;
public static String positionIn;
public static String positionOut;
public static final int WEEKDAYS = 7;
public static String[] WEEK = {
"周日",
"周一",
"周二",
"周三",
"周四",
"周五",
"周六"
};
static long nd = 1000 * 24L * 60L * 60L;//一天的毫秒数
private List<String> gvList;//存放天
private OnDaySelectListener callBack;//回调函数
private static String nowday = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
private SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMM");//日期格式化
private static SimpleDateFormat dateFormat2 = new SimpleDateFormat("yyyy-MM-dd");//日期格式化
public MyCalendar(Context context) {
super(context);
MyCalendar.context = context;
}
public static String DateToWeek(Date date) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int dayIndex = calendar.get(Calendar.DAY_OF_WEEK);
if (dayIndex < 1 || dayIndex > WEEKDAYS) {
return null;
}
return WEEK[dayIndex - 1];
}
public static long getDayDiff(Date begin, Date end) {
long day = 1;
if (end.getTime() < begin.getTime()) {
day = -1;
} else if (end.getTime() == begin.getTime()) {
day = 1;
} else {
day += (end.getTime() - begin.getTime()) / (24 * 60 * 60 * 1000);
}
return day;
}
public static String format1(String time) throws ParseException {
SimpleDateFormat from = new SimpleDateFormat("yyyy-MM-dd", Locale.CHINA);
SimpleDateFormat to = new SimpleDateFormat("MM.dd", Locale.CHINA);
return to.format(from.parse(time));
}
public static String getSpecifiedDayAfter(String specifiedDay) {
Calendar c = Calendar.getInstance();
Date date = null;
try {
date = new SimpleDateFormat("yy-MM-dd").parse(specifiedDay);
} catch (ParseException e) {
e.printStackTrace();
}
c.setTime(date);
int day = c.get(Calendar.DATE);
c.set(Calendar.DATE, day + 1);
String dayAfter = new SimpleDateFormat("yyyy-MM-dd")
.format(c.getTime());
return dayAfter;
}
public MyCalendar(Context context, AttributeSet attrs) {
super(context, attrs);
MyCalendar.context = context;
}
public void setInDay(String inday) {
this.inday = inday;
}
public void setOutDay(String outday) {
this.outday = outday;
}
public void setTheDay(Date dateIn) {
this.theInDay = dateIn;
init();
}
private void init() {
gvList = new ArrayList<String>();//存放天
final Calendar cal = Calendar.getInstance();//获取日历实例
cal.setTime(theInDay);//cal设置为当天的
cal.set(Calendar.DATE, 1);//cal设置当前day为当前月第一天
int tempSum = countNeedHowMuchEmpety(cal);//获取当前月第一天为星期几
int dayNumInMonth = getDayNumInMonth(cal);//获取当前月有多少天
setGvListData(tempSum, dayNumInMonth, cal.get(Calendar.YEAR) + "-" + getMonth((cal.get(Calendar.MONTH) + 1)));
View view = LayoutInflater.from(context).inflate(R.layout.comm_calendar, this, true);//获取布局，开始初始化
TextView tv_year = (TextView) view.findViewById(R.id.tv_year);
if (cal.get(Calendar.YEAR) > new Date().getYear()) {
tv_year.setVisibility(View.VISIBLE);
tv_year.setText(cal.get(Calendar.YEAR) + "年");
}
TextView tv_month = (TextView) view.findViewById(R.id.tv_month);
tv_month.setText(String.valueOf(theInDay.getMonth() + 1));
MyGridView gv = (MyGridView) view.findViewById(R.id.gv_calendar);
calendarGridViewAdapter gridViewAdapter = new calendarGridViewAdapter(gvList, inday, outday);
gv.setAdapter(gridViewAdapter);
gv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View arg1, int position, long arg3) {
String choiceDay = (String) adapterView.getAdapter().getItem(position);
String[] date = choiceDay.split(",");
String day = date[1];
if (!" ".equals(day)) {
if (Integer.parseInt(day) < 10) {
day = "0" + date[1];
}
choiceDay = date[0] + "-" + day;
if (callBack != null) {//调用回调函数回调数据
callBack.onDaySelectListener(arg1, choiceDay);
}
}
}
});
}
private void setGvListData(int tempSum, int dayNumInMonth, String YM) {
gvList.clear();
for (int i = 0; i < tempSum; i++) {
gvList.add(" , ");
}
for (int j = 1; j <= dayNumInMonth; j++) {
gvList.add(YM + "," + String.valueOf(j));
}
}
private String getMonth(int month) {
String mon = "";
if (month < 10) {
mon = "0" + month;
} else {
mon = "" + month;
}
return mon;
}
private int getDayNumInMonth(Calendar cal) {
return cal.getActualMaximum(Calendar.DATE);
}
private int countNeedHowMuchEmpety(Calendar cal) {
int firstDayInWeek = cal.get(Calendar.DAY_OF_WEEK) - 1;
Log.e("MyCalendar", String.valueOf(firstDayInWeek));
return firstDayInWeek;
}
static class GrideViewHolder {
TextView tvDay, tv;
}
static class calendarGridViewAdapter extends BaseAdapter {
List<String> gvList;//存放天
String inday, outday;
public calendarGridViewAdapter(List<String> gvList, String inday, String outday) {
super();
this.gvList = gvList;
this.inday = inday;
this.outday = outday;
}
@Override
public int getCount() {
return gvList.size();
}
@Override
public String getItem(int position) {
return gvList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
GrideViewHolder holder;
if (convertView == null) {
holder = new GrideViewHolder();
convertView = inflate(context, R.layout.common_calendar_gridview_item, null);
holder.tv = (TextView) convertView.findViewById(R.id.tv_calendar);
holder.tvDay = (TextView) convertView.findViewById(R.id.tv_calendar_day);
convertView.setTag(holder);
} else {
holder = (GrideViewHolder) convertView.getTag();
}
String[] date = getItem(position).split(",");
holder.tvDay.setText(date[1]);
if ((position + 1) % 7 == 0 || (position) % 7 == 0) {
holder.tvDay.setTextColor(Color.parseColor("#339900"));
}
if (!date[1].equals(" ")) {
String day = date[1];
if (Integer.parseInt(date[1]) < 10) {
day = "0" + date[1];
}
if ((date[0] + "-" + day).equals(nowday)) {
holder.tvDay.setTextColor(Color.parseColor("#FF6600"));
holder.tvDay.setTextSize(15);
holder.tvDay.setText("今天");
}
if (!"".equals(inday) && (date[0] + "-" + day).equals(inday)) {
convertView.setBackgroundColor(Color.parseColor("#33B5E5"));
holder.tvDay.setTextColor(Color.WHITE);
holder.tvDay.setText(date[1]);
holder.tv.setText("入住");
viewIn = convertView;
positionIn = date[1];
}
if (!"".equals(outday) && (date[0] + "-" + day).equals(outday)) {
convertView.setBackgroundColor(Color.parseColor("#33B5E5"));
holder.tvDay.setTextColor(Color.WHITE);
holder.tvDay.setText(date[1]);
holder.tv.setText("离开");
viewOut = convertView;
positionOut = date[1];
}
try {
//若日历日期<当前日期，则不能选择
if (dateFormat2.parse(date[0] + "-" + day).getTime() < dateFormat2.parse(nowday).getTime()) {
holder.tvDay.setTextColor(Color.parseColor("#999999"));
}
//若日历日期-当前日期>90天，则不能选择
long dayxc = (dateFormat2.parse(date[0] + "-" + day).getTime() - dateFormat2.parse(nowday).getTime()) / nd;
if (dayxc > 90) {
holder.tvDay.setTextColor(Color.parseColor("#999999"));
}
} catch (ParseException e) {
e.printStackTrace();
}
}
return convertView;
}
}
public interface OnDaySelectListener {
void onDaySelectListener(View view, String date);
}
public void setOnDaySelectListener(OnDaySelectListener o) {
callBack = o;
}
}
在界面显示选择的日期
接下来就是为了显示选择的日期进行逻辑判断，包括字符串的转换以及日期格式的转换，日期的计算等。
simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
if ("".equals(home_into_date.getText().toString())
&& "".equals(home_out_date.getText().toString())) {
inday = simpleDateFormat.format(new Date());
try {
//转换时间格式
String changeDate = MyCalendar.format1(inday);
Date dateIn = simpleDateFormat.parse(inday);
//将日期转换成周
String weekIn = MyCalendar.DateToWeek(dateIn);
home_into_date.setText("" + changeDate + weekIn);
String nextDay = MyCalendar.format1(MyCalendar.getSpecifiedDayAfter(inday));
Date dateOut = simpleDateFormat.parse(MyCalendar.getSpecifiedDayAfter(inday));
String weekOut = MyCalendar.DateToWeek(dateOut);
home_out_date.setText("" + nextDay + weekOut);
long days = MyCalendar.getDayDiff(dateIn, dateOut);
home_total_days.setText("共" + (days - 1) + "晚");
} catch (ParseException e) {
e.printStackTrace();
}
} else {
//这里使用sp传的值
inday = pro.getString("dateIn", "");
outday = pro.getString("dateOut", "");
try {
String changeDate = MyCalendar.format1(inday);
Date dateIn = simpleDateFormat.parse(inday);
//将日期转换成周
String weekIn = MyCalendar.DateToWeek(dateIn);
home_into_date.setText("" + changeDate + weekIn);
String outDay = MyCalendar.format1(outday);
Date dateOut = simpleDateFormat.parse(outday);
String weekOut = MyCalendar.DateToWeek(dateOut);
home_out_date.setText("" + outDay + weekOut);
long days = MyCalendar.getDayDiff(dateIn, dateOut);
home_total_days.setText("共" + (days - 1) + "晚");
} catch (ParseException e) {
e.printStackTrace();
}
其中有几个布局，给图自己写吧
comm_calendar
common_calendar_gridview_item
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:orientation="vertical">
<TextView
android:id="@+id/tv_calendar_day"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:textSize="15sp" />
<TextView
android:id="@+id/tv_calendar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:textColor="#FFFFFF"
android:textSize="15sp" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:background="#E4E4E4" />
</LinearLayout>
