在我的应用程序中，我实现了自定义日历以选择日期。但是如何在自定义日历上禁用以前的日期？ XML：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/lightgray"
android:minWidth="1500dp"
android:minHeight="1500dp"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/buttonlayout"
android:layout_width="fill_parent"
android:layout_height="60sp"
android:gravity="left|top"
android:height="60sp"
android:layout_marginTop="30dp"
android:background="#EEEEEE"
android:orientation="horizontal" >
<TextView
android:id="@+id/currentMonth"
android:layout_width="fill_parent"
android:layout_height="60sp"
android:layout_weight="0.6"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF" >
</TextView>
<ImageView
android:id="@+id/nextMonth"
android:layout_width="20sp"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:layout_marginRight="10sp"
android:src="@drawable/calendar_right_arrow_selector" >
</ImageView>
</LinearLayout>
<Button
android:id="@+id/selectedDayMonthYear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="@drawable/calendar_top_header"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#FFFFFF" >
</Button>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center" >
<ImageView
android:id="@+id/calendarheader"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="@drawable/calendar_days" >
</ImageView>
</LinearLayout>
<GridView
android:id="@+id/calendar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:numColumns="7" >
</GridView>
</LinearLayout>
的java：
package com.reloadapp.reload.fragments;
import android.annotation.SuppressLint;
import android.app.Dialog;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.StringTokenizer;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.reloadapp.reload.R;
/**
* Created by user1 on 5/25/2015.
*/
public class Calendardialog_fragment extends DialogFragment implements OnClickListener{
private static final String tag = "MyCalendarActivity";
View lay;
private TextView currentMonth;
private Button selectedDayMonthYearButton;
private ImageView nextMonth;
private GridView calendarView;
private GridCellAdapter adapter;
private Calendar _calendar;
static String tt;
String second12=null;
String journeycal;
@SuppressLint("NewApi")
private int month, year;
@SuppressWarnings("unused")
@SuppressLint({ "NewApi", "NewApi", "NewApi", "NewApi" })
private final DateFormat dateFormatter = new DateFormat();
private static final String dateTemplate = "MMMM yyyy";
public static final String Convert = null;
public static Calendardialog_fragment newInstance() {
Calendardialog_fragment f = new Calendardialog_fragment();
return f;
}
public Calendardialog_fragment() {
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
View view = getActivity().getLayoutInflater().inflate(R.layout.my_calendar_view, new LinearLayout(getActivity()), false);
// Build dialog
Dialog builder = new Dialog(getActivity());
builder.requestWindowFeature(Window.FEATURE_NO_TITLE);
builder.getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
builder.setContentView(view);
_calendar = Calendar.getInstance(Locale.getDefault());
month = _calendar.get(Calendar.MONTH) + 1;
year = _calendar.get(Calendar.YEAR);
Log.d(tag, "Calendar Instance:= " + "Month: " + month + " " + "Year: "
+ year);
selectedDayMonthYearButton = (Button) view
.findViewById(R.id.selectedDayMonthYear);
selectedDayMonthYearButton.setText("Selected: ");
currentMonth = (TextView) view.findViewById(R.id.currentMonth);
currentMonth.setText(DateFormat.format(dateTemplate,
_calendar.getTime()));
nextMonth = (ImageView) view.findViewById(R.id.nextMonth);
nextMonth.setOnClickListener(this);
calendarView = (GridView) view.findViewById(R.id.calendar);
// Initialised
adapter = new GridCellAdapter(getActivity(),
R.id.calendar_day_gridcell, month, year);
adapter.notifyDataSetChanged();
calendarView.setAdapter(adapter);
return builder;
}
private void setGridCellAdapterToDate(int month, int year) {
adapter = new GridCellAdapter(getActivity(),
R.id.calendar_day_gridcell, month, year);
_calendar.set(year, month - 1, _calendar.get(Calendar.DAY_OF_MONTH));
currentMonth.setText(DateFormat.format(dateTemplate,
_calendar.getTime()));
adapter.notifyDataSetChanged();
calendarView.setAdapter(adapter);
}
@Override
public void onClick(View v) {
if (v == nextMonth) {
if (month > 11) {
month = 1;
year++;
} else {
month++;
}
Log.d(tag, "Setting Next Month in GridCellAdapter: " + "Month: "
+ month + " Year: " + year);
setGridCellAdapterToDate(month, year);
}
}
@Override
public void onDestroy() {
Log.d(tag, "Destroying View ...");
super.onDestroy();
}
public class GridCellAdapter extends BaseAdapter implements OnClickListener {
private static final String tag = "GridCellAdapter";
private final Context _context;
private final List<String> list;
private static final int DAY_OFFSET = 1;
private final String[] weekdays = new String[] { "Sun", "Mon", "Tue",
"Wed", "Thu", "Fri", "Sat" };
private final String[] months = { "January", "February", "March",
"April", "May", "June", "July", "August", "September",
"October", "November", "December" };
private final int[] daysOfMonth = { 31, 28, 31, 30, 31, 30, 31, 31, 30,
31, 30, 31 };
private int daysInMonth;
private int currentDayOfMonth;
private int currentWeekDay;
private Button gridcell;
private TextView num_events_per_day;
private final HashMap<String, Integer> eventsPerMonthMap;
private final SimpleDateFormat dateFormatter = new SimpleDateFormat(
"dd-MMM-yyyy");
// Days in Current Month
public GridCellAdapter(Context context, int textViewResourceId,
int month, int year) {
super();
this._context = context;
this.list = new ArrayList<String>();
Log.d(tag, "==> Passed in Date FOR Month: " + month + " "
+ "Year: " + year);
Calendar calendar = Calendar.getInstance();
setCurrentDayOfMonth(calendar.get(Calendar.DAY_OF_MONTH));
setCurrentWeekDay(calendar.get(Calendar.DAY_OF_WEEK));
Log.d(tag, "New Calendar:= " + calendar.getTime().toString());
Log.d(tag, "CurrentDayOfWeek :" + getCurrentWeekDay());
Log.d(tag, "CurrentDayOfMonth :" + getCurrentDayOfMonth());
// Print Month
printMonth(month, year);
// Find Number of Events
eventsPerMonthMap = findNumberOfEventsPerMonth(year, month);
}
private String getMonthAsString(int i) {
return months[i];
}
private String getWeekDayAsString(int i) {
return weekdays[i];
}
private int getNumberOfDaysOfMonth(int i) {
return daysOfMonth[i];
}
public String getItem(int position) {
return list.get(position);
}
@Override
public int getCount() {
return list.size();
}
/**
* Prints Month
*
* @param mm
* @param yy
*/
private void printMonth(int mm, int yy) {
Log.d(tag, "==> printMonth: mm: " + mm + " " + "yy: " + yy);
int trailingSpaces = 0;
int nextMonth = 0;
int nextYear = 0;
int currentMonth = mm - 1;
String currentMonthName = getMonthAsString(currentMonth);
daysInMonth = getNumberOfDaysOfMonth(currentMonth);
Log.d(tag, "Current Month: " + " " + currentMonthName + " having "
+ daysInMonth + " days.");
GregorianCalendar cal = new GregorianCalendar(yy, currentMonth, 1);
Log.d(tag, "Gregorian Calendar:= " + cal.getTime().toString());
if (currentMonth == 11) {
nextMonth = 0;
nextYear = yy + 1;
} else if (currentMonth == 0) {
nextYear = yy;
nextMonth = 1;
} else {
nextMonth = currentMonth + 1;
nextYear = yy;
}
int currentWeekDay = cal.get(Calendar.DAY_OF_WEEK) - 1;
trailingSpaces = currentWeekDay;
Log.d(tag, "Week Day:" + currentWeekDay + " is "
+ getWeekDayAsString(currentWeekDay));
Log.d(tag, "No. Trailing space to Add: " + trailingSpaces);
if (cal.isLeapYear(cal.get(Calendar.YEAR)))
if (mm == 2)
++daysInMonth;
// Trailing Month days
for (int i = 0; i < trailingSpaces; i++) {
}
// Current Month Days
for (int i = 1; i <= daysInMonth; i++) {
Log.d(currentMonthName, String.valueOf(i) + " "
+ getMonthAsString(currentMonth) + " " + yy);
if (i == getCurrentDayOfMonth()) {
list.add(String.valueOf(i) + "-BLUE" + "-"
+ getMonthAsString(currentMonth) + "-" + yy);
} else {
list.add(String.valueOf(i) + "-WHITE" + "-"
+ getMonthAsString(currentMonth) + "-" + yy);
}
}
// Leading Month days
for (int i = 0; i < list.size() % 7; i++) {
Log.d(tag, "NEXT MONTH:= " + getMonthAsString(nextMonth));
list.add(String.valueOf(i + 1) + "-GREY" + "-"
+ getMonthAsString(nextMonth) + "-" + nextYear);
}
}
/**
* NOTE: YOU NEED TO IMPLEMENT THIS PART Given the YEAR, MONTH, retrieve
* ALL entries from a SQLite database for that month. Iterate over the
* List of All entries, and get the dateCreated, which is converted into
* day.
*
* @param year
* @param month
* @return
*/
private HashMap<String, Integer> findNumberOfEventsPerMonth(int year,
int month) {
HashMap<String, Integer> map = new HashMap<String, Integer>();
return map;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
if (row == null) {
LayoutInflater inflater = (LayoutInflater) _context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.screen_gridcell, parent, false);
}
// Get a reference to the Day gridcell
gridcell = (Button) row.findViewById(R.id.calendar_day_gridcell);
gridcell.setOnClickListener(this);
// ACCOUNT FOR SPACING
Log.d(tag, "Current Day: " + getCurrentDayOfMonth());
String[] day_color = list.get(position).split("-");
String theday = day_color[0];
String themonth = day_color[2];
String theyear = day_color[3];
if ((!eventsPerMonthMap.isEmpty()) && (eventsPerMonthMap != null)) {
if (eventsPerMonthMap.containsKey(theday)) {
num_events_per_day = (TextView) row
.findViewById(R.id.num_events_per_day);
Integer numEvents = (Integer) eventsPerMonthMap.get(theday);
num_events_per_day.setText(numEvents.toString());
}
}
// Set the Day GridCell
gridcell.setText(theday);
gridcell.setTag(theday + "-" + themonth + "-" + theyear);
Log.d(tag, "Setting GridCell " + theday + "-" + themonth + "-"
+ theyear);
if (day_color[1].equals("GREY")) {
gridcell.setTextColor(getResources()
.getColor(R.color.lightgray));
}
if (day_color[1].equals("WHITE")) {
gridcell.setTextColor(getResources().getColor(
R.color.lightgray02));
}
if (day_color[1].equals("BLUE")) {
gridcell.setTextColor(getResources().getColor(R.color.orrange));
}
return row;
}
@Override
public void onClick(View view) {
String date_month_year = (String) view.getTag();
selectedDayMonthYearButton.setText("Selected: " + date_month_year);
Log.e("Selected date", date_month_year);
try {
Date parsedDate = dateFormatter.parse(date_month_year);
StringTokenizer tokens = new StringTokenizer(parsedDate.toString(), " ");
String first = tokens.nextToken();// this will contain "Fruit"
String second = tokens.nextToken();
String three = tokens.nextToken();
StringTokenizer split= new StringTokenizer(date_month_year,"-");
String first1 = split.nextToken();
String second1 =split.nextToken();
String three1 = split.nextToken();
String date= three1 + "-" + second1 +"-" + first1;
SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MMMM-dd");
SimpleDateFormat df3 = new SimpleDateFormat("yyyy-MM-dd");
Date eDDte;
eDDte = df2.parse(date);
journeycal=df3.format(eDDte);
Log.v("TAG_journeycal",""+journeycal);
Log.v("TAG", "" + parsedDate.toString());
Log.v("TAG", "" + first);
Log.v("TAG", "" + second);
Log.v("TAG", "" + three);
Intent intent1 = new Intent();
intent1.putExtra("week", "" + first);
intent1.putExtra("month", "" + second);
intent1.putExtra("date", ""+three);
intent1.putExtra("JOURNEY", ""+journeycal);
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK, intent1);
dismiss();
//Log.v("TAG",""+web[+ position]);
/*bundle.putString("name", web[+ position]);
i.putExtra("a", bundle);
*/
/* setResult(Activity.RESULT_OK, intent1);
finish();*/
} catch (ParseException e) {
e.printStackTrace();
}
}
public int getCurrentDayOfMonth() {
return currentDayOfMonth;
}
private void setCurrentDayOfMonth(int currentDayOfMonth) {
this.currentDayOfMonth = currentDayOfMonth;
}
public void setCurrentWeekDay(int currentWeekDay) {
this.currentWeekDay = currentWeekDay;
}
public int getCurrentWeekDay() {
return currentWeekDay;
}
}
}
用户无法从日历中选择以前的日期，因此我需要从日历中禁用之前的日期。