从应用程序发送数据到窗口小部件
我被困在一个特定之情况。我需要让我的小部件,尽快更新用户更新从应用程序的时间。我也尝试通过发送thorugh意图Extras中的数据广播,但不这样做。目前,我有我的AppWidgetProvider数据,我需要这个数据发送到服务
I am stuck in a particular scenerio. I need to get my widget updated as soon as the user update the time from the app. I did try Broadcast by sending the data thorugh Intent Extras but fail to do so. Currently, I have my data in AppWidgetProvider and I need to send this data to service
公共类CountdownWidget扩展AppWidgetProvider {
//共享preferences userDefaults;
public class CountdownWidget extends AppWidgetProvider { // SharedPreferences userDefaults;
// update rate in milliseconds
public static final int UPDATE_RATE = 1800000; // 30 minute
public static String nameOne = "";
@Override
public void onDeleted(Context context, int[] appWidgetIds) {
for (int appWidgetId : appWidgetIds) {
setAlarm(context, appWidgetId, -1);
}
super.onDeleted(context, appWidgetIds);
}
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Bundle extras = intent.getExtras();
nameOne = extras.getString("NAME_ONE");
Log.e("Name: ", nameOne);
super.onReceive(context, intent);
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
for (int appWidgetId : appWidgetIds) {
setAlarm(context, appWidgetId, UPDATE_RATE);
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
public static void setAlarm(Context context, int appWidgetId, int updateRate) {
// Log.e("", "Updating Widget Service");
PendingIntent newPending = makeControlPendingIntent(context,
CountdownService.UPDATE, appWidgetId);
AlarmManager alarms = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
if (updateRate >= 0) {
alarms.setRepeating(AlarmManager.ELAPSED_REALTIME,
SystemClock.elapsedRealtime(), updateRate, newPending);
} else {
// on a negative updateRate stop the refreshing
alarms.cancel(newPending);
}
}
public static PendingIntent makeControlPendingIntent(Context context,
String command, int appWidgetId) {
Intent active = new Intent(context, CountdownService.class);
active.setAction(command);
active.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
// this Uri data is to make the PendingIntent unique, so it wont be
// updated by FLAG_UPDATE_CURRENT
// so if there are multiple widget instances they wont override each
// other
Uri data = Uri.withAppendedPath(
Uri.parse("countdownwidget://widget/id/#" + command
+ appWidgetId), String.valueOf(appWidgetId));
active.setData(data);
return (PendingIntent.getService(context, 0, active,
PendingIntent.FLAG_UPDATE_CURRENT));
}
}
正如你所看到的名称一是一个静态变量。我可以在的onReceive 使用方法getExtras接收数据,但我不是无法这一数据传递给我的 CountdownService 服务。
As you see nameOne is a static variable. I can receive data on the onReceive method using getExtras, but I am not unable to pass this data to my CountdownService Service.
我曾尝试 CountdownWidget.nameOne ,但仍然未能FET在服务中的数据。
i did try CountdownWidget.nameOne but still fails to fet the data in the service.
任何帮助将是非常美联社preciated。
Any help will be highly appreciated.
您必须创建一个更新微件服务,检查的本教程(第四部分),您可以尝试通过静态变量来传输数据。
You have to create a service that updates the widget,check this tutorial (the 4th section), you may try to transfer the data through static variables.