同步系统设置时间格式

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

import com.android.providers.downloads.ui.R;

import android.content.ContentResolver;
import android.content.Context;
import android.text.format.DateFormat;
import android.util.Log;

/**
 * @author qqzhong Email:[email protected]
 * @version create time：2013-3-28 上午9:38:55
 * @Description:
 */
public class TimeUtils {

    static public final int SECONDS_PER_HOUR = 3600;

    public static String convertDuration(long duration) {
        Calendar calendar = Calendar.getInstance();
        // *1000 to convert seconds to millis.
        calendar.setTimeInMillis(duration * 1000);

        long hours = duration / (long) SECONDS_PER_HOUR;
        hours %= 100;
        duration /= SECONDS_PER_HOUR;

        String format = "mm:ss";
        SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.getDefault());
        String durationStr = sdf.format(calendar.getTime());
        if (hours != 0) {
            durationStr = hours + ":" + durationStr;
        }

        return durationStr;
    }

    public static String formatDate(Context context, long dateInMillis) {
        Calendar nowCalendar = Calendar.getInstance();

        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(dateInMillis);

        String format = null;

        if (nowCalendar.get(Calendar.YEAR) != calendar.get(Calendar.YEAR)) {
            if (DateFormat.is24HourFormat(context)) {
                format = "yyyy/MM/dd HH:mm";
            } else {
                format = "yyyy/MM/dd hh:mm a";
            }
        } else if (nowCalendar.get(Calendar.DAY_OF_YEAR) != calendar
                .get(Calendar.DAY_OF_YEAR)) {
            if (DateFormat.is24HourFormat(context)) {
                format = "MM/dd HH:mm";
            } else {
                format = "MM/dd hh:mm a";
            }
        } else {
            if (DateFormat.is24HourFormat(context)) {
                format = "HH:mm";
            } else {
                format = "hh:mm a";
            }
        }

        SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.getDefault());
        String dateStr = sdf.format(calendar.getTime());

        return dateStr;
    }
    public static String formatHourseDate(Context context, long dateInMillis) {

        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(dateInMillis);

        String format = null;
        if (DateFormat.is24HourFormat(context)) {
                format = "HH:mm";
        } else {
// "a hh:mm"表示 下午/下午 xx时xx分 例：“下午 3：24” 如果显示为 “3：24 下午”  就将 a 放在 hh:mm 后即可
                format = "a hh:mm";
        }

        SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.getDefault());
        String dateStr = sdf.format(calendar.getTime());
        return dateStr;
    }
    public static String timeShow(Context context, long timeMillis) {
        Date targetDate = new Date(timeMillis);
        Date nowDate = new Date(System.currentTimeMillis());

        ContentResolver cv = context.getContentResolver();

        boolean needDate = true;
        boolean needYear = (targetDate.getYear() != nowDate.getYear());
        if ((targetDate.getYear() != nowDate.getYear())) {
            needYear = true;
        } else if ((targetDate.getMonth() != nowDate.getMonth())
                || targetDate.getDate() != nowDate.getDate()) {
            needYear = false;
        } else {
            needDate = false;
        }

        String dateStr = "";
        if (needDate) {
            boolean isZH = "zh".equals(context.getResources().getConfiguration().locale.getLanguage());
            String defaultValue = android.provider.Settings.System.getString(cv,
                    android.provider.Settings.System.DATE_FORMAT);
            String dateFormat = getDateFormatStringForSetting(context, defaultValue, isZH, needYear);

            dateStr = "00-00-00";
            try {
                SimpleDateFormat sdf = new SimpleDateFormat(dateFormat);
                dateStr = sdf.format(targetDate);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

       /* java.text.DateFormat tFormat = android.text.format.DateFormat.getTimeFormat(context);
        String timeStr = tFormat.format(timeMillis);*/
        String timeStr = formatHourseDate(context,timeMillis);
        return dateStr+" "+timeStr;
    }
    private static String getDateFormatStringForSetting(Context context, String value, boolean isZH, boolean needYear) {
        String template = context.getString(com.android.internal.R.string.numeric_date_template);
        if (!needYear) {
            int first = template.indexOf("%s");
            int second = template.indexOf("%s", first+1);
            template = template.substring(0, first) + template.substring(second);
        }

        if (value != null) {
            int month = value.indexOf('M');
            int day = value.indexOf('d');
            int year = value.indexOf('y');

            if (month >= 0 && day >= 0 && year >= 0) {

                if (year < month && year < day) {
                    if (month < day) {
                        if (isZH) {
                            if (!needYear) {
                                value = context.getString(R.string.dateformat_md);
                            } else {
                                value = context.getString(R.string.dateformat_ymd);
                            }
                        } else {
                            if (!needYear) {
                                value = String.format(template, "MM", "dd");
                            } else {
                                value = String.format(template, "yyyy", "MM", "dd");
                            }
                        }
                    } else {
                        if (isZH) {
                            if (!needYear) {
                                value = context.getString(R.string.dateformat_dm);
                            } else {
                                value = context.getString(R.string.dateformat_ydm);
                            }
                        } else {
                            if (!needYear) {
                                value = String.format(template, "dd", "MM");
                            } else {
                                value = String.format(template, "yyyy", "dd", "MM");
                            }
                        }
                    }
                } else if (month < day) {
                    if (day < year) {
                        if (isZH) {
                            if (!needYear) {
                                value = context.getString(R.string.dateformat_md);
                            } else {
                                value = context.getString(R.string.dateformat_mdy);
                            }
                        } else {
                            if (!needYear) {
                                value = String.format(template, "MM", "dd");
                            } else {
                                value = String.format(template, "MM", "dd", "yyyy");
                            }
                        }
                    } else { // unlikely
                        if (isZH) {
                            if (!needYear) {
                                value = context.getString(R.string.dateformat_md);
                            } else {
                                value = context.getString(R.string.dateformat_myd);
                            }
                        } else {
                            if (!needYear) {
                                value = String.format(template, "MM", "dd");
                            } else {
                                value = String.format(template, "MM", "yyyy", "dd");
                            }
                        }
                    }
                } else { // day < month
                    if (month < year) {
                        if (isZH) {
                            if (!needYear) {
                                value = context.getString(R.string.dateformat_dm);
                            } else {
                                value = context.getString(R.string.dateformat_dmy);
                            }
                        } else {
                            if (!needYear) {
                                value = String.format(template, "dd", "MM");
                            } else {
                                value = String.format(template, "dd", "MM", "yyyy");
                            }
                        }
                    } else { // unlikely
                        if (isZH) {
                            if (!needYear) {
                                value = context.getString(R.string.dateformat_dm);
                            } else {
                                value = context.getString(R.string.dateformat_dym);
                            }
                        } else {
                            if (!needYear) {
                                value = String.format(template, "dd", "MM");
                            } else {
                                value = String.format(template, "dd", "yyyy", "MM");
                            }
                        }
                    }
                }

                return value;
            }

        }

        if (isZH) {
            if (!needYear) {
                value = context.getString(R.string.dateformat_md);
            } else {
                value = context.getString(R.string.dateformat_ymd);
            }
        } else {
            if (!needYear) {
                value = String.format(template, "MM", "dd");
            } else {
                value = String.format(template, "yyyy", "MM", "dd");
            }
        }
        return value;
    }
}

<?xml version="1.0" encoding="utf-8"?>
    <resources>
    <string name="des_locked_icon">Locked Icon</string>
    <string name="des_message_sent_failure">Message sent failure</string>
    <string name="des_divider">Divider Line</string>
    <string name="des_quick_message">Show or hide quick message panel</string>
    <string name="des_send_message">Click to send message</string>
    <string name="des_draft_box_icon">Has draft</string>
    <string name="des_edit_phrase">Click to edit phrase</string>
    <string name="des_del_phrase">Click to delete phrase</string>
    <string name="des_del_recipient">Click to delete recipient</string>

    <string name="dateformat_ymd">yyyy年M月d日</string>
    <string name="dateformat_ydm">yyyy年d日M月</string>
    <string name="dateformat_myd">M月yyyy年d日</string>
    <string name="dateformat_mdy">M月d日yyyy年</string>
    <string name="dateformat_dym">d日yyyy年M月</string>
    <string name="dateformat_dmy">d日M月yyyy年</string>

    <string name="dateformat_md">M月d日</string>
    <string name="dateformat_dm">d日M月</string>
</resources>