android 常用的帮助类和方法积累一

/***
* 将string类型转成longl类型
*
* @param strTime
* @param formatType
* @return
* @throws ParseException
*/
public static long stringToLong(String strTime, String formatType) {
Date date = null; // String类型转成date类型
try {
date = stringToDate(strTime, formatType);
if (date != null) {
long currentTime = dateToLong(date); // date类型转成long类型
return currentTime;
}
} catch (ParseException e) {
e.printStackTrace();
}
return 0;
}

/***
* 将String转成date
*
* @param strTime
* @param formatType
* @return
* @throws ParseException
*/
public static Date stringToDate(String strTime, String formatType) throws ParseException {
SimpleDateFormat formatter = new SimpleDateFormat(formatType);
Date date = null;
date = formatter.parse(strTime);
return date;
}

/***
* date要转换的date类型的时间
*
* @param date
* @return
*/
public static long dateToLong(Date date) {
return date.getTime();
}

// 设置只能输入英文和数字mEtInfo.setKeyListener(DigitsKeyListener.getInstance(regix));mEtInfo.setInfoDigit("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890");

/***
* 字符串 yyyy-MM-dd 转成MM月dd日
*
* @param time
*            传进来的格式为 yyyy-MM-dd
* @return
*/
public static String StringToMMDD(String time) {
SimpleDateFormat format = new SimpleDateFormat(FORMAT_SHORT);
Date date1 = null;
try {
date1 = format.parse(time);
} catch (ParseException e) {
e.printStackTrace();
}
SimpleDateFormat sdf = new SimpleDateFormat(FORMAT_MD);
String mTime = sdf.format(date1);
return mTime;
}
public static final int		WEEKDAYS			= 7;
public static String[]		dayOfWeeks			= { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
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 dayOfWeeks[dayIndex - 1];
}

/***
* 字符串 yyyy-MM-dd转成星期几
*
* @param time
*            传进来的格式为 yyyy-MM-dd
* @return
*/
public static String StringToWeek(String time) {
SimpleDateFormat format = new SimpleDateFormat(FORMAT_SHORT);
try {
Date date = format.parse(time);
return dateToWeek(date);
} catch (ParseException e) {
e.printStackTrace();
}
return null;
}

// 将时间改成2h22min格式
private String convertDuration(String duration) {
if (TextUtils.isEmpty(duration)) {
return null;
}
String[] strs = duration.split(":");
StringBuilder sb_dur = new StringBuilder();
sb_dur.append(Integer.valueOf(strs[0].toString()));
sb_dur.append("h");
sb_dur.append(Integer.valueOf(strs[1].toString()));
sb_dur.append("min");
return sb_dur.toString();
}