如何在指定时间段内显示通知中的字符串列表？
问题描述 投票：0回答：1
我想在指定的时间内显示通知。就像我有一个开始时间，当我想看到的通知和结束时间，直到当我想看到的通知，即字符串的列表，应该显示在一个给定的时间段。
此外，该列表可以是用户指定的任何数量。
我怎样才能动态地决定显示通知的时间？或者说如何统一划分时间段和字符串？
为了更清楚地说明，这里是显示通知的开始时间、结束时间和显示字符串数量的屏幕。
请帮助我 谢谢你...
EDIT :
我正在尝试给出的解决方案。
List<String> times = new ArrayList<>();
try {
SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm", Locale.ENGLISH);
Date start = dateFormat.parse(startTime);
Date end = dateFormat.parse(endTime);
long minutes = ((end.getTime() - start.getTime()) / 1000 / 60) /
howMany;
for (int i = 0; i < howMany; i++) {
Calendar calobj = Calendar.getInstance();
calobj.setTime(start);
calobj.add(Calendar.MINUTE, (int) (i * minutes));
String time = dateFormat.format(calobj.getTime());
times.add(time);
}
} catch (Exception e) {
e.printStackTrace();
}
Log.d("timesList", times.toString());
return times;
}
public static void showNotification(
List<String> timeList, Context context,
String quote
) {
Intent notifyIntent = new Intent(context, MyNewIntentReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,
notifyIntent, PendingIntent.FLAG_ONE_SHOT
);
notifyIntent.putExtra("title", context.getString(R.string.app_name));
AlarmManager alarmManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
for (String time : timeList) {
final int random = new Random().nextInt();
notifyIntent.putExtra("notify_id", random);
notifyIntent.putExtra(
"quote",
quote
);
Date date;
SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yy HH:mm:ss");
try {
date = dateFormat.parse(time);
System.out.println(date);
alarmManager
.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
date.getTime(),
date.getTime(),
pendingIntent
);
} catch (ParseException e) {
e.printStackTrace();
}
}
Log.d("notificationIntentSet", "Utils, pending intent set");
}
在我的接收器中建立通知。
public class MyNewIntentReceiver extends BroadcastReceiver {
public MyNewIntentReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
PowerManager powerManager = (PowerManager) context.getSystemService(
Context.POWER_SERVICE);
PowerManager.WakeLock wakeLock =
powerManager.newWakeLock(
PowerManager.PARTIAL_WAKE_LOCK,
"dailyfaith:wakelog"
);
wakeLock.acquire();
// get id, titleText and bigText from intent
int NOTIFY_ID = intent.getIntExtra("notify_id", 0);
String titleText = intent.getStringExtra("title");
String bigText = intent.getStringExtra("quote");
// Create intent.
Intent notificationIntent = new Intent(context, MainActivity.class);
// use NOTIFY_ID as requestCode
PendingIntent contentIntent = PendingIntent.getActivity(context,
NOTIFY_ID, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT
);
// get res.
Resources res = context.getResources();
// build notification.
Notification.Builder builder = new Notification.Builder(context)
.setContentIntent(contentIntent)
.setSmallIcon(R.drawable.ic_daily_faith_icon)
.setAutoCancel(true)
.setContentTitle(titleText)
.setSound(RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
.setContentText(bigText);
Log.d("notificationBuild", "Notification Builder set");
/* // check vibration.
if (mPrefs.getBoolean("vibration", true)) {
builder.setVibrate(new long[]{0, 50});
}*/
/* // create default title if empty.
if (titleText.equals("")) {
builder.setContentTitle(
context.getString(R.string.app_name));
}*/
// show notification. check for delay.
builder.setWhen(System.currentTimeMillis());
Log.d("notificationSetWhen", "Notification set when triggered");
Notification notification = new Notification.BigTextStyle(builder)
.bigText(bigText).build();
NotificationManager notificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(NOTIFY_ID, notification);
wakeLock.release();
}
}
从Activity :
@Override
public void onTimeSet(
TimePickerDialog view, int hourOfDay, int minute, int second
) {
String hourString = hourOfDay < 10 ? "0" + hourOfDay : "" + hourOfDay;
String minuteString = minute < 10 ? "0" + minute : ":" + minute;
String time = hourString + minuteString;
if (startTimeSelected) {
startTime = time;
textViewStartTime.setText(time);
}
else if (endTimeSelected) {
endTime = time;
textViewEndTime.setText(time);
}
String count = (String) textViewQuoteCount.getText();
count.replace("X","");
if(startTimeSelected && endTimeSelected)
{
Utils.setAlarmTimeList(startTime, endTime, Integer.parseInt(count));
Utils.showNotification(timeList); // not sure how to send the list of strings - quotes
}
tpd = null;
}
我将时间数组传递给待定意图，但通知没有被触发。我想，对于报警，我也需要给出当前日期，所以我再次为每个通知格式化了时间。
但这也没有用。有什么建议吗？
EDIT :
我已经更新了Erwin的答案。我现在也得到了日期和时间，但是我调试时，接收器也没有被调用。
我已经在清单文件中设置了接收器。
<receiver
android:name = ".MyNewIntentReceiver"
android:enabled = "true"
android:exported = "false" />
Log of timesList
D/timesList: [Tue May 19 16:21:00 GMT+05:30 2020, Tue May 19 16:24:00 GMT+05:30 2020, Tue May 19 16:27:00 GMT+05:30 2020, Tue May 19 16:30:00 GMT+05:30 2020, Tue May 19 16:33:00 GMT+05:30 2020, Tue May 19 16:36:00 GMT+05:30 2020, Tue May 19 16:39:00 GMT+05:30 2020, Tue May 19 16:42:00 GMT+05:30 2020, Tue May 19 16:45:00 GMT+05:30 2020, Tue May 19 16:48:00 GMT+05:30 2020]
会是什么问题呢。
我试着把当前的时间给待定的意图作为..:
alarmManager
.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
System.currentTimeMillis(),
System.currentTimeMillis(),
pendingIntent
);
然后我得到了通知。但没有得到当我设置一个日期到。
EDIT 2
public static List<Date> setAlarmTimeList(String startTime, String endTime, int howMany) {
List<Date> times = new ArrayList<>();
try {
SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm", Locale.ENGLISH);
Date start = dateFormat.parse(startTime);
Date end = dateFormat.parse(endTime);
long minutes = ((end.getTime() - start.getTime()) / 1000 / 60) /
(howMany - 1);
Calendar calobj;
for (int i = 0; i < howMany; i++) {
calobj = Calendar.getInstance();
calobj.set(Calendar.HOUR_OF_DAY, Integer.valueOf(dateFormat.format(start).split(":")[0]));
calobj.set(Calendar.MINUTE, Integer.valueOf(dateFormat.format(start).split(":")[1]));
calobj.add(Calendar.MINUTE, (int) (i * minutes));
calobj.set(Calendar.SECOND, 0);
times.add(calobj.getTime());
}
} catch (Exception e) {
e.printStackTrace();
}
Log.d("timesList", times.toString());
return times;
}
public static void showNotification(
List<Date> timeList, Context context,
String quote
) {
for (Date date : timeList) {
Intent notifyIntent = new Intent(context, MyNewIntentReceiver.class);
notifyIntent.putExtra("title", context.getString(R.string.app_name));
final int random = new Random().nextInt();
notifyIntent.putExtra("notify_id", random);
notifyIntent.putExtra(
"quote",
quote
);
int randomInt = new Random().nextInt(1000);
notifyIntent.putExtra("requestCode",randomInt);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
randomInt,
notifyIntent, PendingIntent.FLAG_ONE_SHOT
);
AlarmManager alarmManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
Log.d("date",String.valueOf(date.getTime()));
/* long afterTwoMinutes = SystemClock.elapsedRealtime() + 60 * 1000;*/
long afterTwoMinutes = System.currentTimeMillis();
Log.d("aftertwoMinutes",String.valueOf(afterTwoMinutes));
long datetimer = date.getTime();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
alarmManager.setExactAndAllowWhileIdle
(AlarmManager.ELAPSED_REALTIME_WAKEUP,
date.getTime(), pendingIntent);
else
alarmManager.setExact
(AlarmManager.ELAPSED_REALTIME_WAKEUP,
date.getTime(), pendingIntent);
}
Log.d("notificationIntentSet", "Utils, pending intent set");
}
public class MyNewIntentReceiver extends BroadcastReceiver {
public MyNewIntentReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
int NOTIFY_ID = intent.getIntExtra("notify_id", 0);
String titleText = intent.getStringExtra("title");
String bigText = intent.getStringExtra("quote");
int requestCode = intent.getIntExtra("requestCode",0);
sendNotification(context,bigText,NOTIFY_ID,requestCode);
}
private void createNotificationChannel() {
// Create the NotificationChannel, but only on API 26+ because
// the NotificationChannel class is new and not in the support library
}
public static void sendNotification(Context mcontext, String messageBody,
int notify_id,int requestCode) {
Intent intent = new Intent(mcontext, HomeScreenActivity.class);
PendingIntent pendingIntent = PendingIntent
.getActivity(mcontext, requestCode /* Request code */, intent,
PendingIntent.FLAG_UPDATE_CURRENT
);
NotificationManager notificationManager = (NotificationManager) mcontext
.getSystemService(Context.NOTIFICATION_SERVICE);
Uri defaultSoundUri = RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel notificationChannel = new NotificationChannel
(
mcontext.getString(R.string.default_notification_channel_id),
"Rewards Notifications",
NotificationManager.IMPORTANCE_HIGH
);
// Configure the notification channel.
notificationChannel.setDescription("Channel description");
notificationChannel.enableLights(true);
notificationManager.createNotificationChannel(notificationChannel);
}
NotificationCompat.Builder notificationBuilder = new NotificationCompat
.Builder(mcontext, mcontext.getString(R.string.default_notification_channel_id))
.setContentTitle(mcontext.getString(R.string.app_name))
.setSmallIcon(R.drawable.ic_daily_faith_icon)
.setContentText(messageBody)
.setAutoCancel(true)
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
notificationManager.notify(notify_id /* ID of notification */,
notificationBuilder.build());
}
}
对date.getTime()不起作用，对SystemClock起作用的是System.currentTimeInMilliseconds()。
1个回答
4
投票
投票
试试这个。
public static List<Date> setAlarmTimeList(String startTime, String endTime, int howMany) {
List<Date> times = new ArrayList<>();
try {
SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm", Locale.ENGLISH);
Date start = dateFormat.parse(startTime);
Date end = dateFormat.parse(endTime);
long minutes = ((end.getTime() - start.getTime()) / 1000 / 60) /
(howMany - 1);
Calendar calobj;
for (int i = 0; i < howMany; i++) {
calobj = Calendar.getInstance();
calobj.set(Calendar.HOUR_OF_DAY, Integer.valueOf(dateFormat.format(start).split(":")[0]));
calobj.set(Calendar.MINUTE, Integer.valueOf(dateFormat.format(start).split(":")[1]));
calobj.add(Calendar.MINUTE, (int) (i * minutes));
calobj.set(Calendar.SECOND, 0);
times.add(calobj.getTime());
}
} catch (Exception e) {
e.printStackTrace();
}
Log.d("timesList", times.toString());
return times;
}
以毫秒为单位获取开始时间和结束时间，然后除以多少次。
为报警管理器。
public static void showNotification(List<Date> timeList, Context context, String quote) {
Intent notifyIntent = new Intent(context, MyNewIntentReceiver.class);
notifyIntent.putExtra("title", context.getString(R.string.app_name));
AlarmManager alarmManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
for (Date time : timeList) {
final int random = new Random().nextInt();
notifyIntent.putExtra("notify_id", random);
notifyIntent.putExtra(
"quote",
quote
);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, random,
notifyIntent, PendingIntent.FLAG_ONE_SHOT
);
alarmManager
.setInexactRepeating(AlarmManager.RTC_WAKEUP,
time.getTime(),
AlarmManager.INTERVAL_DAY,
pendingIntent
);
}
Log.d("notificationIntentSet", "Utils, pending intent set");
}
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