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#7 Implement Date format preference dialog and corresponding formatter
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98 changes: 98 additions & 0 deletions
98
app/src/main/java/org/andstatus/todoagenda/prefs/dateformat/DateFormatter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package org.andstatus.todoagenda.prefs.dateformat; | ||
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| import android.content.Context; | ||
| import android.text.format.DateUtils; | ||
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| import org.andstatus.todoagenda.R; | ||
| import org.joda.time.DateTime; | ||
| import org.joda.time.Days; | ||
| import org.joda.time.Instant; | ||
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| import java.text.SimpleDateFormat; | ||
| import java.util.Date; | ||
| import java.util.Formatter; | ||
| import java.util.Locale; | ||
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| /** | ||
| * @author yvolk@yurivolkov.com | ||
| */ | ||
| public class DateFormatter { | ||
| private final Context context; | ||
| private final DateFormatValue dateFormatValue; | ||
| private final DateTime now; | ||
| Locale locale = Locale.getDefault(); | ||
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| public DateFormatter(Context context, DateFormatValue dateFormatValue, DateTime now) { | ||
| this.context = context; | ||
| this.dateFormatValue = dateFormatValue; | ||
| this.now = now; | ||
| } | ||
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| public CharSequence formatMillis(long millis) { | ||
| try { | ||
| if(dateFormatValue.hasPattern()) { | ||
| return formatDateCustom(millis, dateFormatValue.getPattern()); | ||
| } | ||
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| switch (dateFormatValue.type) { | ||
| case HIDDEN: | ||
| return ""; | ||
| case DEVICE_DEFAULT: | ||
| return formatDateTime(millis, DateUtils.FORMAT_SHOW_DATE); | ||
| case DEFAULT_WEEKDAY: | ||
| return formatDateTime(millis, DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_WEEKDAY); | ||
| case ABBREVIATED: | ||
| return formatDateTime(millis, DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_SHOW_DATE | | ||
| DateUtils.FORMAT_SHOW_WEEKDAY); | ||
| case DEFAULT_DAYS: | ||
| return getDaysFromTodayString(context, getDaysFromToday(millis)) + ", " + | ||
| formatDateTime(millis, DateUtils.FORMAT_SHOW_DATE); | ||
| case NUMBER_OF_DAYS: | ||
| return getDaysFromTodayString(context, getDaysFromToday(millis)); | ||
| default: | ||
| return "(not implemented)"; | ||
| } | ||
| } catch (Exception e) { | ||
| return e.getLocalizedMessage(); | ||
| } | ||
| } | ||
|
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| private String formatDateTime(long millis, int flags) { | ||
| return DateUtils.formatDateRange(context, | ||
| new Formatter(new StringBuilder(50), locale), | ||
| millis, | ||
| millis, | ||
| flags, | ||
| now.getZone().getID()) | ||
| .toString(); | ||
| } | ||
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| public static CharSequence getDaysFromTodayString(Context context, int daysFromToday) { | ||
| switch (daysFromToday) { | ||
| case -1: | ||
| return context.getText(R.string.yesterday); | ||
| case 0: | ||
| return context.getText(R.string.today); | ||
| case 1: | ||
| return context.getText(R.string.tomorrow); | ||
| default: | ||
| return Math.abs(daysFromToday) > 9999 ? "..." : Integer.toString(daysFromToday); | ||
| } | ||
| } | ||
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| public int getDaysFromToday(long millis) { | ||
| return Days.daysBetween(now.withTimeAtStartOfDay(), | ||
| Instant.ofEpochMilli(millis)).getDays(); | ||
| } | ||
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| private String formatDateCustom(long millis, String pattern) { | ||
| try { | ||
| SimpleDateFormat format = new SimpleDateFormat(pattern, locale); | ||
| Date date = new Date(millis); | ||
| return format.format(date); | ||
| } catch (Exception e) { | ||
| return e.getLocalizedMessage(); | ||
| } | ||
| } | ||
|
|
||
| } |
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