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   源码介绍

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这是一个日常日历，可以实现签到功能

package com.test.signcalendar;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

import com.test.signcalendar.R;
import com.test.signcalendar.SignCalendar.OnCalendarDateChangedListener;

public class MainActivity extends Activity {

	private String date = null;// 设置默认选中的日期  格式为 “2014-04-05” 标准DATE格式   
	private TextView popupwindow_calendar_month;
	private SignCalendar calendar;
	private Button btn_signIn;
	private List<String> list = new ArrayList<String>(); //设置标记列表
	DBManager dbManager;
	boolean isinput=false;
	private String date1 = null;//单天日期
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		// 初始化DBManager
        dbManager = new DBManager(this);
        SimpleDateFormat    formatter    =   new    SimpleDateFormat    ("yyyy-MM-dd");       
		Date    curDate    =   new    Date(System.currentTimeMillis());//获取当前时间       
		date1 =formatter.format(curDate); 
		
		popupwindow_calendar_month = (TextView) findViewById(R.id.popupwindow_calendar_month);
		btn_signIn = (Button) findViewById(R.id.btn_signIn);
		calendar = (SignCalendar) findViewById(R.id.popupwindow_calendar);
		popupwindow_calendar_month.setText(calendar.getCalendarYear()   "年"
				  calendar.getCalendarMonth()   "月");
		
		if (null != date) {
			int years = Integer.parseInt(date.substring(0,
					date.indexOf("-")));
			int month = Integer.parseInt(date.substring(
					date.indexOf("-")   1, date.lastIndexOf("-")));
			popupwindow_calendar_month.setText(years   "年"   month   "月");

			calendar.showCalendar(years, month);
			calendar.setCalendarDayBgColor(date,
					R.drawable.calendar_date_focused);				
		}

		add("2015-11-10");//这三个要标记的
		add("2015-11-02");
		add("2015-12-02");
		query();
		if(isinput){
			btn_signIn.setText("今日已签，明日继续");
			btn_signIn.setBackgroundResource(R.drawable.button_gray);
			btn_signIn.setEnabled(false);
		}
		
		btn_signIn.setOnClickListener(new OnClickListener() {
          @Override
          public void onClick(View v) {
           Date today= calendar.getThisday();
           SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");  
           /* calendar.removeAllMarks();
           list.add(df.format(today));
           calendar.addMarks(list, 0);*/
           //将当前日期标示出来
           	add(df.format(today));
            //calendar.addMark(today, 0);
           	query();
            HashMap<String, Integer> bg = new HashMap<String, Integer>();
            
            calendar.setCalendarDayBgColor(today, R.drawable.bg_sign_today);
            btn_signIn.setText("今日已签，明日继续");
            btn_signIn.setBackgroundResource(R.drawable.button_gray);
            btn_signIn.setEnabled(false);
          }
        });
		//监听所选中的日期
//		calendar.setOnCalendarClickListener(new OnCalendarClickListener() {
//
//			public void onCalendarClick(int row, int col, String dateFormat) {
//				int month = Integer.parseInt(dateFormat.substring(
//						dateFormat.indexOf("-")   1,
//						dateFormat.lastIndexOf("-")));
//
//				if (calendar.getCalendarMonth() - month == 1//跨年跳转
//						|| calendar.getCalendarMonth() - month == -11) {
//					calendar.lastMonth();
//
//				} else if (month - calendar.getCalendarMonth() == 1 //跨年跳转
//						|| month - calendar.getCalendarMonth() == -11) {
//					calendar.nextMonth();
//
//				} else {
//					list.add(dateFormat);
//					calendar.addMarks(list, 0);
//					calendar.removeAllBgColor(); 
//					calendar.setCalendarDayBgColor(dateFormat,
//							R.drawable.calendar_date_focused);
//					date = dateFormat;//最后返回给全局 date
//				}
//			}
//		});

		//监听当前月份
		calendar.setOnCalendarDateChangedListener(new OnCalendarDateChangedListener() {
			public void onCalendarDateChanged(int year, int month) {
				popupwindow_calendar_month
				.setText(year   "年"   month   "月");
			}
		});
	}
	
	 public void add(String date)
	    {
	        ArrayList<sqlit> persons = new ArrayList<sqlit>();

	        sqlit person1 = new sqlit(date,"true");

	        persons.add(person1);

	        dbManager.add(persons);
	    }
	 
	 public void query()
	    {
	        List<sqlit> persons = dbManager.query();
	        for (sqlit person : persons)
	        {
	            list.add(person.date);
	            if(date1.equals(person.getDate())){
					isinput=true;
				}
	        }
	        calendar.addMarks(list, 0);
	    }
	
	  @Override
	    protected void onDestroy()
	    {
	        super.onDestroy();
	        dbManager.closeDB();// 释放数据库资源
	    }

}