我正在制作一个基本的Dashclock扩展程序,轮询CalendarContract.Events
以查找同步到用户设备的所有日历事件的列表,检索计划最快发生的日历事件,并发布时间,标题,位置,和desctiption。这是我的代码:
public class FullCalService extends DashClockExtension {
public static final String[] FIELDS = { Events._ID, Events.TITLE,
Events.ALL_DAY, Events.EVENT_LOCATION, Events.DTSTART,
Events.EVENT_TIMEZONE, Events.DESCRIPTION };
public FullCalService() {
}
@Override
protected void onUpdateData(int arg0) {
TimeZone tz = TimeZone.getDefault();
long currentTimeMillis = Calendar.getInstance().getTimeInMillis() - tz.getRawOffset();
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(this);
Cursor c;
if (prefs.getBoolean("allDayAllowed", false)) {
c = getContentResolver().query(
Events.CONTENT_URI,
FIELDS,
new StringBuilder().append("(").append(Events.DTSTART)
.append(" >= ?)").toString(),
new String[] { Long.toString(currentTimeMillis) },
Events.DTSTART, null);
} else {
c = getContentResolver().query(
Events.CONTENT_URI,
FIELDS,
new StringBuilder().append("((").append(Events.ALL_DAY)
.append("= ?) AND (").append(Events.DTSTART)
.append(" >= ?))").toString(),
new String[] { Integer.toString(0),
Long.toString(currentTimeMillis) }, Events.DTSTART,
null);
}
if (c.moveToFirst()) {
long eventTimeMillis = c.getLong(c.getColumnIndex(Events.DTSTART));
// if (tz.inDaylightTime(new Date(eventTimeMillis))) {
// eventTimeMillis += tz.getDSTSavings();
// }
//Log.d("DesCal service", "Value of hoursToReveal: "+prefs.getString("hoursToReveal", "1"));
if (eventTimeMillis < currentTimeMillis + 360000
* Integer.parseInt(prefs.getString("hoursToReveal", "1"))) {
String title = c.getString(c.getColumnIndex(Events.TITLE));
String loc = c.getString(c
.getColumnIndex(Events.EVENT_LOCATION));
String time = DateUtils.formatDateTime(this, eventTimeMillis,
DateUtils.FORMAT_SHOW_TIME);
String desc = c.getString(c.getColumnIndex(Events.DESCRIPTION));
StringBuilder expandedBody = new StringBuilder(time);
if (!loc.isEmpty()){
expandedBody.append(" - ").append(loc);
}
expandedBody.append("\n").append(desc);
String uri = new StringBuilder(
"content://com.android.calendar/events/").append(
c.getLong(c.getColumnIndex(Events._ID))).toString();
publishUpdate(new ExtensionData()
.visible(true)
.status(time)
.expandedTitle(title)
.expandedBody(expandedBody.toString())
.icon(R.drawable.ic_dash_cal)
.clickIntent(
new Intent(Intent.ACTION_VIEW, Uri.parse(uri))));
c.close();
} else {
publishUpdate(new ExtensionData().visible(false));
c.close();
}
} else {
publishUpdate(new ExtensionData().visible(false));
c.close();
}
}
}
首次安装时,它似乎工作得很好。然而,在活动开始后,它不会抓住任何未来的事件。有没有理由为什么扩展不会刷新自己?
答案 0 :(得分:1)
您是如何触发进一步更新的?您需要手动指定何时调用onUpdateData
,例如当内容提供商发生更改时,或者屏幕打开等时,默认情况下,扩展只会每30分钟左右刷新一次。请参阅built in calendar extension的来源,例如代码。