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2015年11月 的存档

很全很牛逼的java日期函数

2015年11月27日 没有评论
/**
  * 获取现在时间
  *
  * @return 返回时间类型 yyyy-MM-dd HH:mm:ss
  */
public static Date getNowDate() {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  String dateString = formatter.format(currentTime);
  ParsePosition pos = new ParsePosition(8);
  Date currentTime_2 = formatter.parse(dateString, pos);
  return currentTime_2;
}
/**
  * 获取现在时间
  *
  * @return返回短时间格式 yyyy-MM-dd
  */
public static Date getNowDateShort() {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  String dateString = formatter.format(currentTime);
  ParsePosition pos = new ParsePosition(8);
  Date currentTime_2 = formatter.parse(dateString, pos);
  return currentTime_2;
}
/**
  * 获取现在时间
  *
  * @return返回字符串格式 yyyy-MM-dd HH:mm:ss
  */
public static String getStringDate() {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  String dateString = formatter.format(currentTime);
  return dateString;
}
/**
  * 获取现在时间
  *
  * @return 返回短时间字符串格式yyyy-MM-dd
  */
public static String getStringDateShort() {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  String dateString = formatter.format(currentTime);
  return dateString;
}
/**
  * 获取时间 小时:分;秒 HH:mm:ss
  *
  * @return
  */
public static String getTimeShort() {
  SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
  Date currentTime = new Date();
  String dateString = formatter.format(currentTime);
  return dateString;
}
/**
  * 将长时间格式字符串转换为时间 yyyy-MM-dd HH:mm:ss
  *
  * @param strDate
  * @return
  */
public static Date strToDateLong(String strDate) {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  ParsePosition pos = new ParsePosition(0);
  Date strtodate = formatter.parse(strDate, pos);
  return strtodate;
}
/**  * 将长时间格式时间转换为字符串 yyyy-MM-dd HH:mm:ss  *   * @param dateDate  * @return  */
public static String dateToStrLong(java.util.Date dateDate) {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  String dateString = formatter.format(dateDate);
  return dateString;
}
/**
  * 将短时间格式时间转换为字符串 yyyy-MM-dd
  *
  * @param dateDate
  * @param k
  * @return
  */
public static String dateToStr(java.util.Date dateDate) {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  String dateString = formatter.format(dateDate);
  return dateString;
}
/**
  * 将短时间格式字符串转换为时间 yyyy-MM-dd
  *
  * @param strDate
  * @return
  */
public static Date strToDate(String strDate) {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  ParsePosition pos = new ParsePosition(0);
  Date strtodate = formatter.parse(strDate, pos);
  return strtodate;
}
/**
  * 得到现在时间
  *
  * @return
  */
public static Date getNow() {
  Date currentTime = new Date();
  return currentTime;
}
/**
  * 提取一个月中的最后一天
  *
  * @param day
  * @return
  */
public static Date getLastDate(long day) {
  Date date = new Date();
  long date_3_hm = date.getTime() - 3600000 * 34 * day;
  Date date_3_hm_date = new Date(date_3_hm);
  return date_3_hm_date;
}
/**
  * 得到现在时间
  *
  * @return 字符串 yyyyMMdd HHmmss
  */
public static String getStringToday() {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd HHmmss");
  String dateString = formatter.format(currentTime);
  return dateString;
}
/**
  * 得到现在小时
  */
public static String getHour() {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  String dateString = formatter.format(currentTime);
  String hour;
  hour = dateString.substring(11, 13);
  return hour;
}
/**
  * 得到现在分钟
  *
  * @return
  */
public static String getTime() {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  String dateString = formatter.format(currentTime);
  String min;
  min = dateString.substring(14, 16);
  return min;
}
/**
  * 根据用户传入的时间表示格式,返回当前时间的格式 如果是yyyyMMdd,注意字母y不能大写。
  *
  * @param sformat
  *            yyyyMMddhhmmss
  * @return
  */
public static String getUserDate(String sformat) {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat(sformat);
  String dateString = formatter.format(currentTime);
  return dateString;
}
/**
  * 二个小时时间间的差值,必须保证二个时间都是"HH:MM"的格式,返回字符型的分钟
  */
public static String getTwoHour(String st1, String st2) {
  String[] kk = null;
  String[] jj = null;
  kk = st1.split(":");
  jj = st2.split(":");
  if (Integer.parseInt(kk[0]) < Integer.parseInt(jj[0]))
   return "0";
  else {
   double y = Double.parseDouble(kk[0]) + Double.parseDouble(kk[1]) / 60;
   double u = Double.parseDouble(jj[0]) + Double.parseDouble(jj[1]) / 60;
   if ((y - u) > 0)
    return y - u + "";
   else
    return "0";
  }
}
/**
  * 得到二个日期间的间隔天数
  */
public static String getTwoDay(String sj1, String sj2) {
  SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
  long day = 0;
  try {
   java.util.Date date = myFormatter.parse(sj1);
   java.util.Date mydate = myFormatter.parse(sj2);
   day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
  } catch (Exception e) {
   return "";
  }
  return day + "";
}
/**
  * 时间前推或后推分钟,其中JJ表示分钟.
  */
public static String getPreTime(String sj1, String jj) {
  SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  String mydate1 = "";
  try {
   Date date1 = format.parse(sj1);
   long Time = (date1.getTime() / 1000) + Integer.parseInt(jj) * 60;
   date1.setTime(Time * 1000);
   mydate1 = format.format(date1);
  } catch (Exception e) {
  }
  return mydate1;
}
/**
  * 得到一个时间延后或前移几天的时间,nowdate为时间,delay为前移或后延的天数
  */
public static String getNextDay(String nowdate, String delay) {
  try{
  SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
  String mdate = "";
  Date d = strToDate(nowdate);
  long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;
  d.setTime(myTime * 1000);
  mdate = format.format(d);
  return mdate;
  }catch(Exception e){
   return "";
  }
}
/**
  * 判断是否润年
  *
  * @param ddate
  * @return
  */
public static boolean isLeapYear(String ddate) {
  /**
   * 详细设计: 1.被400整除是闰年,否则: 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
   * 3.能被4整除同时能被100整除则不是闰年
   */
  Date d = strToDate(ddate);
  GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
  gc.setTime(d);
  int year = gc.get(Calendar.YEAR);
  if ((year % 400) == 0)
   return true;
  else if ((year % 4) == 0) {
   if ((year % 100) == 0)
    return false;
   else
    return true;
  } else
   return false;
}
/**
  * 返回美国时间格式 26 Apr 2006
  *
  * @param str
  * @return
  */
public static String getEDate(String str) {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  ParsePosition pos = new ParsePosition(0);
  Date strtodate = formatter.parse(str, pos);
  String j = strtodate.toString();
  String[] k = j.split(" ");
  return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);
}
/**
  * 获取一个月的最后一天
  *
  * @param dat
  * @return
  */
public static String getEndDateOfMonth(String dat) {// yyyy-MM-dd
  String str = dat.substring(0, 8);
  String month = dat.substring(5, 7);
  int mon = Integer.parseInt(month);
  if (mon == 1 || mon == 3 || mon == 5 || mon == 7 || mon == 8 || mon == 10 || mon == 12) {
   str += "31";
  } else if (mon == 4 || mon == 6 || mon == 9 || mon == 11) {
   str += "30";
  } else {
   if (isLeapYear(dat)) {
    str += "29";
   } else {
    str += "28";
   }
  }
  return str;
}
/**
  * 判断二个时间是否在同一个周
  *
  * @param date1
  * @param date2
  * @return
  */
public static boolean isSameWeekDates(Date date1, Date date2) {
  Calendar cal1 = Calendar.getInstance();
  Calendar cal2 = Calendar.getInstance();
  cal1.setTime(date1);
  cal2.setTime(date2);
  int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
  if (0 == subYear) {
   if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
    return true;
  } else if (1 == subYear && 11 == cal2.get(Calendar.MONTH)) {
   // 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
   if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
    return true;
  } else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {
   if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR))
    return true;
  }
  return false;
}
/**
  * 产生周序列,即得到当前时间所在的年度是第几周
  *
  * @return
  */
public static String getSeqWeek() {
  Calendar c = Calendar.getInstance(Locale.CHINA);
  String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
  if (week.length() == 1)
   week = "0" + week;
  String year = Integer.toString(c.get(Calendar.YEAR));
  return year + week;
}
/**
  * 获得一个日期所在的周的星期几的日期,如要找出2002年2月3日所在周的星期一是几号
  *
  * @param sdate
  * @param num
  * @return
  */
public static String getWeek(String sdate, String num) {
  // 再转换为时间
  Date dd = VeDate.strToDate(sdate);
  Calendar c = Calendar.getInstance();
  c.setTime(dd);
  if (num.equals("1")) // 返回星期一所在的日期
   c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
  else if (num.equals("2")) // 返回星期二所在的日期
   c.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);
  else if (num.equals("3")) // 返回星期三所在的日期
   c.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);
  else if (num.equals("4")) // 返回星期四所在的日期
   c.set(Calendar.DAY_OF_WEEK, Calendar.THURSDAY);
  else if (num.equals("5")) // 返回星期五所在的日期
   c.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);
  else if (num.equals("6")) // 返回星期六所在的日期
   c.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
  else if (num.equals("0")) // 返回星期日所在的日期
   c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
  return new SimpleDateFormat("yyyy-MM-dd").format(c.getTime());
}
/**
  * 根据一个日期,返回是星期几的字符串
  *
  * @param sdate
  * @return
  */
public static String getWeek(String sdate) {
  // 再转换为时间
  Date date = VeDate.strToDate(sdate);
  Calendar c = Calendar.getInstance();
  c.setTime(date);
  // int hour=c.get(Calendar.DAY_OF_WEEK);
  // hour中存的就是星期几了,其范围 1~7
  // 1=星期日 7=星期六,其他类推
  return new SimpleDateFormat("EEEE").format(c.getTime());
}
public static String getWeekStr(String sdate){
  String str = "";
  str = VeDate.getWeek(sdate);
  if("1".equals(str)){
   str = "星期日";
  }else if("2".equals(str)){
   str = "星期一";
  }else if("3".equals(str)){
   str = "星期二";
  }else if("4".equals(str)){
   str = "星期三";
  }else if("5".equals(str)){
   str = "星期四";
  }else if("6".equals(str)){
   str = "星期五";
  }else if("7".equals(str)){
   str = "星期六";
  }
  return str;
}
/**
  * 两个时间之间的天数
  *
  * @param date1
  * @param date2
  * @return
  */
public static long getDays(String date1, String date2) {
  if (date1 == null || date1.equals(""))
   return 0;
  if (date2 == null || date2.equals(""))
   return 0;
  // 转换为标准时间
  SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
  java.util.Date date = null;
  java.util.Date mydate = null;
  try {
   date = myFormatter.parse(date1);
   mydate = myFormatter.parse(date2);
  } catch (Exception e) {
  }
  long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
  return day;
}
/**
  * 形成如下的日历 , 根据传入的一个时间返回一个结构 星期日 星期一 星期二 星期三 星期四 星期五 星期六 下面是当月的各个时间
  * 此函数返回该日历第一行星期日所在的日期
  *
  * @param sdate
  * @return
  */
public static String getNowMonth(String sdate) {
  // 取该时间所在月的一号
  sdate = sdate.substring(0, 8) + "01";
  // 得到这个月的1号是星期几
  Date date = VeDate.strToDate(sdate);
  Calendar c = Calendar.getInstance();
  c.setTime(date);
  int u = c.get(Calendar.DAY_OF_WEEK);
  String newday = VeDate.getNextDay(sdate, (1 - u) + "");
  return newday;
}
/**
  * 取得数据库主键 生成格式为yyyymmddhhmmss+k位随机数
  *
  * @param k
  *            表示是取几位随机数,可以自己定
  */
public static String getNo(int k) {
  return getUserDate("yyyyMMddhhmmss") + getRandom(k);
}
/**
  * 返回一个随机数
  *
  * @param i
  * @return
  */
public static String getRandom(int i) {
  Random jjj = new Random();
  // int suiJiShu = jjj.nextInt(9);
  if (i == 0)
   return "";
  String jj = "";
  for (int k = 0; k < i; k++) {
   jj = jj + jjj.nextInt(9);
  }
  return jj;
}
/***************************************************************************
  * //nd=1表示返回的值中包含年度 //yf=1表示返回的值中包含月份 //rq=1表示返回的值中包含日期 //format表示返回的格式 1
  * 以年月日中文返回 2 以横线-返回 // 3 以斜线/返回 4 以缩写不带其它符号形式返回 // 5 以点号.返回
  **************************************************************************/
public static String getStringDateMonth(String sdate, String nd, String yf, String rq, String format) {
  Date currentTime = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
  String dateString = formatter.format(currentTime);
  String s_nd = dateString.substring(0, 4); // 年份
  String s_yf = dateString.substring(5, 7); // 月份
  String s_rq = dateString.substring(8, 10); // 日期
  String sreturn = "";
  roc.util.MyChar mc = new roc.util.MyChar();
  if (sdate == null || sdate.equals("") || !mc.Isdate(sdate)) { // 处理空值情况
   if (nd.equals("1")) {
    sreturn = s_nd;
    // 处理间隔符
    if (format.equals("1"))
     sreturn = sreturn + "年";
    else if (format.equals("2"))
     sreturn = sreturn + "-";
    else if (format.equals("3"))
     sreturn = sreturn + "/";
    else if (format.equals("5"))
     sreturn = sreturn + ".";
   }
   // 处理月份
   if (yf.equals("1")) {
    sreturn = sreturn + s_yf;
    if (format.equals("1"))
     sreturn = sreturn + "月";
    else if (format.equals("2"))
     sreturn = sreturn + "-";
    else if (format.equals("3"))
     sreturn = sreturn + "/";
    else if (format.equals("5"))
     sreturn = sreturn + ".";
   }
   // 处理日期
   if (rq.equals("1")) {
    sreturn = sreturn + s_rq;
    if (format.equals("1"))
     sreturn = sreturn + "日";
   }
  } else {
   // 不是空值,也是一个合法的日期值,则先将其转换为标准的时间格式
   sdate = roc.util.RocDate.getOKDate(sdate);
   s_nd = sdate.substring(0, 4); // 年份
   s_yf = sdate.substring(5, 7); // 月份
   s_rq = sdate.substring(8, 10); // 日期
   if (nd.equals("1")) {
    sreturn = s_nd;
    // 处理间隔符
    if (format.equals("1"))
     sreturn = sreturn + "年";
    else if (format.equals("2"))
     sreturn = sreturn + "-";
    else if (format.equals("3"))
     sreturn = sreturn + "/";
    else if (format.equals("5"))
     sreturn = sreturn + ".";
   }
   // 处理月份
   if (yf.equals("1")) {
    sreturn = sreturn + s_yf;
    if (format.equals("1"))
     sreturn = sreturn + "月";
    else if (format.equals("2"))
     sreturn = sreturn + "-";
    else if (format.equals("3"))
     sreturn = sreturn + "/";
    else if (format.equals("5"))
     sreturn = sreturn + ".";
   }
   // 处理日期
   if (rq.equals("1")) {
    sreturn = sreturn + s_rq;
    if (format.equals("1"))
     sreturn = sreturn + "日";
   }
  }
  return sreturn;
}
分类: android 标签: ,

android安卓如何操作sqllite,增删改查+自定义类

2015年11月27日 没有评论

package util.base;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import data.config.Constants;

public class MysqlDo {

private MysqlDb mysqldb = null;
private SQLiteDatabase database = null;
private boolean flag = false;

public class MysqlDb extends SQLiteOpenHelper {

public MysqlDb(Context context, int version, String db) {
super(context, db, null, version);
}

@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(
“Create table user_avatar_name(id integer primary key autoincrement,uid int(11) NOT NULL DEFAULT 0,avatar varchar(255),nickname varchar(255))”);
db.execSQL(“create index if not exists key1 on user_avatar_name(uid)”);
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}

}

public MysqlDo(Context context, int version) {
try {
/*
String db = null;
if (Constants.sdCardExist == true) {
db = Constants.baseFilePath + “dataBase”;
File dbDirectory = new File(db);
if (!dbDirectory.exists()) {
dbDirectory.mkdirs();
}
}
if (db != null) {
db = db + File.separator + Constants.sqlDbName;
} else {
db = Constants.sqlDbName;
}
*/
mysqldb = new MysqlDb(context, version, Constants.sqlDbName);
} catch (Exception e) {
} finally {
if (database != null) {
database.close();
}
}
}

public boolean addRecord(String sql, Object[] mValue) {
flag = false;
try {
database = mysqldb.getWritableDatabase();
database.execSQL(sql, mValue);
flag = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (database != null) {
database.close();
}
}
return flag;
}

public boolean deleteRecord(String sql) {
flag = false;
try {
database = mysqldb.getWritableDatabase();
database.execSQL(sql);
flag = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (database != null) {
database.close();
}
}
return flag;
}

public boolean updateRecord(String sql, Object[] mValue) {
flag = false;
try {
database = mysqldb.getWritableDatabase();
database.execSQL(sql, mValue);
flag = true;
} catch (Exception e) {
} finally {
if (database != null) {
database.close();
}
}
return flag;
}

public Map<String, String> viewSingleRecord(String sql) {
Map<String, String> map = new HashMap<String, String>();
try {
database = mysqldb.getReadableDatabase();
Cursor cursor = database.rawQuery(sql, null);
if (cursor.getCount() > 0) {
int columns = cursor.getColumnCount();
while (cursor.moveToNext()) {
for (int i = 0; i < columns; i++) {
String cols_name = cursor.getColumnName(i);
String cols_value = cursor.getString(cursor.getColumnIndex(cols_name));
if (cols_value == “”) {
cols_value = “”;
}
map.put(cols_name, cols_value);
}
}
cursor.close();
return map;
} else {
return null;
}
} catch (Exception e) {
} finally {
if (database != null) {
database.close();
}
}
return null;
}

public List<Map<String, Object>> viewListRecord(String sql) {
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
try {
database = mysqldb.getReadableDatabase();
Cursor cursor = database.rawQuery(sql, null);
if (cursor.getCount() > 0) {
int columns = cursor.getColumnCount();
while (cursor.moveToNext()) {
Map<String, Object> map = new HashMap<String, Object>();
for (int i = 0; i < columns; i++) {
String cols_name = cursor.getColumnName(i);
String cols_value = cursor.getString(cursor.getColumnIndex(cols_name));
if (cols_value == “”) {
cols_value = “”;
}
map.put(cols_name, cols_value);
}
list.add(map);
}
cursor.close();
return list;
} else {
return null;
}
} catch (Exception e) {
} finally {
if (database != null) {
database.close();
}
}
return null;
}

}

 

上面是自定义的操作类

下面是使用方法:

private MysqlDo mysqlDo = null;

mysqlDo = new MysqlDo(context, Constants.mysqlVersion);

 

Map<String, String> rs = mysqlDo.viewSingleRecord(
“select * from user_avatar_name where uid=” + obj.getInt(“uid”) + ” limit 1″);
if (rs != null) {
mysqlDo.updateRecord(“update user_avatar_name set avatar=?,nickname=? where uid=?”,
new Object[] { obj.getString(“avatar”), obj.getString(“nickname”),
obj.getInt(“uid”) });
} else {
mysqlDo.addRecord(“insert into user_avatar_name(uid,avatar,nickname) values(?,?,?)”,
new Object[] { obj.getInt(“uid”), obj.getString(“avatar”),
obj.getString(“nickname”) });
}

分类: android 标签: ,

android安卓获取控件高度,设置控件高度,包括透明度

2015年11月24日 没有评论

View today_finish_view = View.inflate(context, R.layout.tab_today_viewpager_today_finish, null);

RelativeLayout center_alpha_relative = (RelativeLayout) today_finish_view.findViewById(R.id.center_alpha_relative);
//获取高度
int w = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
int h = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
center_alpha_relative.measure(w, h);
int height = center_alpha_relative.getMeasuredHeight();

//设置高度
LinearLayout center_alpha_bg_linear = (LinearLayout) today_finish_view.findViewById(R.id.center_alpha_bg_linear);
//明明是LinearLayout,为什么用RelativeLayout.LayoutParams(网上说因为整个view是View.inflate进去的)
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) center_alpha_bg_linear.getLayoutParams();
params.height = height;
center_alpha_bg_linear.setLayoutParams(params);

 

//设置透明度
center_alpha_bg_linear.getBackground().setAlpha(200);

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