每日总结-23.12.24

关于计算日历

private int xianshilianxu(int year,int month,int day,String user)
    {
        int jianchishijian=0;
        TextView textView1 = findViewById(R.id.hunong);
        String riqi1 = year + "-" + (month + 1) + "-" + day;
        if (chaxunriqi(year,month,day,user)>=0) {
            jianchishijian = dedaolianxvtianshu(year, month, day,user,true);
            String yijianchitext="已坚持"+jianchishijian+"天";
            textView1.setText(yijianchitext);
        }else {
            jianchishijian = dedaolianxvtianshu(year, month, day,user,false);
            String yijianchitext="已坚持"+jianchishijian+"天";
            textView1.setText(yijianchitext);
        }
        return jianchishijian;
    }
    private int dedaolianxvtianshu(int year,int month,int day,String usernname,boolean flag)//flag=true指今天已经打卡
    {
        int jianchitian=0;
        android.icu.util.Calendar calendar= android.icu.util.Calendar.getInstance();
        calendar.set(year,month,day);
        if(!flag) {
            calendar.add(android.icu.util.Calendar.DAY_OF_MONTH, -1);
            year = calendar.get(android.icu.util.Calendar.YEAR);
            month = calendar.get(android.icu.util.Calendar.MONTH);//实际月份需要加1
            day = calendar.get(android.icu.util.Calendar.DATE);
        }
        while(true) {
            if (chaxunriqi(year,month,day,usernname)>=0) {
                jianchitian++;
                calendar.add(android.icu.util.Calendar.DAY_OF_MONTH, -1);
                year = calendar.get(android.icu.util.Calendar.YEAR);
                month = calendar.get(android.icu.util.Calendar.MONTH);//实际月份需要加1
                day = calendar.get(android.icu.util.Calendar.DATE);
            } else {
                break;
            }
        }
        return jianchitian;
    }