I have 2 timepicker which represent start and finish. It means the start time must be earlier than the finish.
My idea is to use Calendar class and use getTimeInMillis to do the validation, but its not working :
Calendar calFrom = Calendar.getInstance();
Calendar calTo = Calendar.getInstance();
calFrom.set(Calendar.HOUR_OF_DAY, timeSchedule.getCurrentHour());
calFrom.set(Calendar.MINUTE, timeSchedule.getCurrentMinute());
calTo.set(Calendar.HOUR_OF_DAY, toTime.getCurrentHour());
calTo.set(Calendar.MINUTE, toTime.getCurrentMinute());
if(calFrom.getTimeInMillis() > calTo.getTimeInMillis())
{
Crouton.makeText(MyActivity.this, "error", Style.ALERT).show();
}
When i debug the above code, although the timeSchedule is earlier then toTime, the value of calFrom.getTimeInMillis() is bigger than calTo.getTimeInMillis().
Please kindly help me, Thanks for your time.
int fromHour = calFrom.getCurrentHour();
int toHour = calTo.getCurrentHour();
int fromMin = calFrom.getCurrentMinute();
int toMin= calTo.getCurrentMinute();
if (fromHour >toHour )
{
System.out.println ("from time is greater");
}
else if (fromHour==toHour)
{
if (fromMin>toMin)
{
System.out.println ("from time is greater");
}
else
{
System.out.println ("To time is greater");
}
}
else
{
System.out.println ("To time is greater");
}
Related
I use UsageStats feature of Android, but the smallest interval is DAILY INTERVAL.
long time = System.currentTimeMillis();
List<UsageStats> appList = manager.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, time - DAY_IN_MILLI_SECONDS, time);
How can I get UsageStats in an hourly interval?
All credit goes to this answer. I have learned from that one.
How can we collect app usage data for customized time range (e.g. for per 1 hour)?
We have to call queryEvents(long begin_time, long end_time) method as it will provide us all data starting from begin_time to end_time. It give us each app data through foreground and background events instead of total spent time like queryUsageStats() method. So, using foreground and background events time stamp, we can count the number of times an app has been launched and also can find out the usage duration for each app.
Implementation to Collect Last 1 Hour App Usage Data
At first, add the following line in the AndroidManifest.xml file and also request user to get permission of usage access.
<uses-permission android:name="android.permission.PACKAGE_USAGE_STATS" />
Add the following lines inside any method
long hour_in_mil = 1000*60*60; // In Milliseconds
long end_time = System.currentTimeMillis();
long start_time = end_time - hour_in_mil;
Then, call the method getUsageStatistics()
getUsageStatistics(start_time, end_time);
getUsageStatistics methiod
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
void getUsageStatistics(long start_time, long end_time) {
UsageEvents.Event currentEvent;
// List<UsageEvents.Event> allEvents = new ArrayList<>();
HashMap<String, AppUsageInfo> map = new HashMap<>();
HashMap<String, List<UsageEvents.Event>> sameEvents = new HashMap<>();
UsageStatsManager mUsageStatsManager = (UsageStatsManager)
context.getSystemService(Context.USAGE_STATS_SERVICE);
if (mUsageStatsManager != null) {
// Get all apps data from starting time to end time
UsageEvents usageEvents = mUsageStatsManager.queryEvents(start_time, end_time);
// Put these data into the map
while (usageEvents.hasNextEvent()) {
currentEvent = new UsageEvents.Event();
usageEvents.getNextEvent(currentEvent);
if (currentEvent.getEventType() == UsageEvents.Event.ACTIVITY_RESUMED ||
currentEvent.getEventType() == UsageEvents.Event.ACTIVITY_PAUSED) {
// allEvents.add(currentEvent);
String key = currentEvent.getPackageName();
if (map.get(key) == null) {
map.put(key, new AppUsageInfo(key));
sameEvents.put(key,new ArrayList<UsageEvents.Event>());
}
sameEvents.get(key).add(currentEvent);
}
}
// Traverse through each app data which is grouped together and count launch, calculate duration
for (Map.Entry<String,List<UsageEvents.Event>> entry : sameEvents.entrySet()) {
int totalEvents = entry.getValue().size();
if (totalEvents > 1) {
for (int i = 0; i < totalEvents - 1; i++) {
UsageEvents.Event E0 = entry.getValue().get(i);
UsageEvents.Event E1 = entry.getValue().get(i + 1);
if (E1.getEventType() == 1 || E0.getEventType() == 1) {
map.get(E1.getPackageName()).launchCount++;
}
if (E0.getEventType() == 1 && E1.getEventType() == 2) {
long diff = E1.getTimeStamp() - E0.getTimeStamp();
map.get(E0.getPackageName()).timeInForeground += diff;
}
}
}
// If First eventtype is ACTIVITY_PAUSED then added the difference of start_time and Event occuring time because the application is already running.
if (entry.getValue().get(0).getEventType() == 2) {
long diff = entry.getValue().get(0).getTimeStamp() - start_time;
map.get(entry.getValue().get(0).getPackageName()).timeInForeground += diff;
}
// If Last eventtype is ACTIVITY_RESUMED then added the difference of end_time and Event occuring time because the application is still running .
if (entry.getValue().get(totalEvents - 1).getEventType() == 1) {
long diff = end_time - entry.getValue().get(totalEvents - 1).getTimeStamp();
map.get(entry.getValue().get(totalEvents - 1).getPackageName()).timeInForeground += diff;
}
}
smallInfoList = new ArrayList<>(map.values());
// Concatenating data to show in a text view. You may do according to your requirement
for (AppUsageInfo appUsageInfo : smallInfoList)
{
// Do according to your requirement
strMsg = strMsg.concat(appUsageInfo.packageName + " : " + appUsageInfo.launchCount + "\n\n");
}
TextView tvMsg = findViewById(R.id.MA_TvMsg);
tvMsg.setText(strMsg);
} else {
Toast.makeText(context, "Sorry...", Toast.LENGTH_SHORT).show();
}
}
AppUsageInfo.class
import android.graphics.drawable.Drawable;
class AppUsageInfo {
Drawable appIcon; // You may add get this usage data also, if you wish.
String appName, packageName;
long timeInForeground;
int launchCount;
AppUsageInfo(String pName) {
this.packageName=pName;
}
}
How can I customize these codes to collect per 1 hour data?
As you want to get per hour data, please change the end_time and start_time value for every hour data. For instance: If I would try to collect past per hour data (for past 2 hour data). I would do the following thing.
long end_time = System.currentTimeMillis();
long start_time = end_time - (1000*60*60);
getUsageStatistics(start_time, end_time);
end_time = start_time;
start_time = start_time - hour_in_mil;
getUsageStatistics(start_time, end_time);
However, you may use a Handler to skip repeatedly writing start_time and end_time to change value of these variables. Each time data will be collected for one hour, a task will be completed and after automatically changing the values of the variables, you will again call the getUsageStatistics method.
Note: Maybe, you will not be able to retrieve data for more than past 7.5 days as events are only kept by the system for a few days.
Calendar cal = (Calendar) Calendar.getInstance().clone();
//I used this and it worked, only for 7 days and a half ago
if (daysAgo == 0) {
//Today - I only count from 00h00m00s today to present
end = cal.getTimeInMillis();
start = LocalDate.now().toDateTimeAtStartOfDay().toInstant().getMillis();
} else {
long todayStartOfDayTimeStamp = LocalDate.now().toDateTimeAtStartOfDay().toInstant().getMillis();
if (mDaysAgo == -6) {
//6 days ago, only get events in time -7 days to -7.5 days
cal.setTimeInMillis(System.currentTimeMillis());
cal.add(Calendar.DATE, daysAgo + 1);
end = cal .getTimeInMillis();
start = end - 43200000;
} else {
//get events from 00h00m00s to 23h59m59s
//Current calendar point to 0h0m today
cal.setTimeInMillis(todayStartOfDayTimeStamp);
cal.add(Calendar.DATE, daysAgo + 1);
end = calendar.getTimeInMillis();
cal.add(Calendar.DATE, -1);
start = calendar.getTimeInMillis();
}
}
I don't think it's possible, even if you ask for data in the middle of an interval, it looks like the data is stored in buckets and the minimum bucket is a day.
In UsageStatsManager documentation, it says:
A request for data in the middle of a time interval will include that interval.
Also, INTERVAL_BEST is not a real interval, it just selects one of the available intervals for the given time range. In
UsageStatsManager.java source code, it says:
/**
* The number of available intervals. Does not include {#link #INTERVAL_BEST}, since it
* is a pseudo interval (it actually selects a real interval).
* {#hide}
*/
public static final int INTERVAL_COUNT = 4;
Yes, Android is providing minimum INTERVAL_DAILY. But for the best result, you can use INTERVAL_BEST. Android is giving the best interval timer for the given time range in queryUsageStats(int, long, long).
Happy coding...
I want to check whether target time lies between two given times without considering date using Java8 time. Let say if starting time is "21:30" , ending time is "06:30" and target time is "03:00", so program should return true.
#Test
public void posteNuit()
{
DateTimeFormatter format = DateTimeFormatter.ofPattern("HH:mm");
String s = "21:30";
String e = "06:30";
String t = "03:00";
LocalTime startTime = LocalTime.parse(s, format);
LocalTime endTime = LocalTime.parse(e, format);
LocalTime targetTime = LocalTime.parse(t, format);
if ( targetTime.isBefore(endTime) && targetTime.isAfter(startTime) ) {
System.out.println("Yes! night shift.");
} else {
System.out.println("Not! night shift.");
}
}
You've used LocalTime which doesn't store date information, only time.
Then you are trying to check if target time is after start time (03:00 after 21:30). This statement is false.
Your start time should be before end time.
If you need to handle night shift try following:
if (startTime.isAfter(endTime)) {
if (targetTime.isBefore(endTime) || targetTime.isAfter(startTime)) {
System.out.println("Yes! night shift.");
} else {
System.out.println("Not! night shift.");
}
} else {
if (targetTime.isBefore(endTime) && targetTime.isAfter(startTime)) {
System.out.println("Yes! without night shift.");
} else {
System.out.println("Not! without night shift.");
}
}
in your scenario it seems that if startTime > endTime no matter what's targetTime you'll return true.
So update the if statement:
if (( startTime.isAfter(endTime) && targetTime.isBefore(startTime)
&& targetTime.isAfter(endTime) )
|| ( startTime.isBefore(endTime) && targetTime.isBefore(endTime)
&& targetTime.isAfter(startTime) )) {
I have to create a scheduler which runs at a particular day of week. For example my scheduler should run on every Monday at 11:50 PM. Please help me through the task.
PS: I went through these links How to schedule task daily + onStart() in Play 2.0.4? suggests using a cronJob expression to calculate next execution time. Is there a way to do using akka by default i.e. without a cronJob expression?
schedule(initialDelay: Duration, frequency: Duration, receiver: ActorRef, message: Any)
You just need to calculate the initialDelay on the scale (minutes, hours, days) that you want. In your case, you have to find out the time until the next Monday. That's not an issue related with Akka, just plain Java:
//In minutes
private long timeToNextMonday(){
Calendar now = Calendar.getInstance();
now.set(Calendar.HOUR, 23);
now.set(Calendar.MINUTE, 50);
int weekday = now.get(Calendar.DAY_OF_WEEK);
System.out.println(now.getTime());
if (weekday != Calendar.MONDAY){
// calculate how much to add
// the 2 is the difference between Saturday and Monday
int days = (Calendar.SATURDAY - weekday + 2) % 7;
now.add(Calendar.DAY_OF_YEAR, days);
}
Date date = now.getTime();
return (now.getTime().getTime() - System.currentTimeMillis())/(1000*60);
}
And then the schedule call itself is pretty straightforward:
Akka.system().scheduler().schedule(
Duration.create(timeToNextMonday, TimeUnit.MINUTES),
Duration.create(7, TimeUnit.DAYS),
actor, actorMessage,
Akka.system().dispatcher(), null);
public void onStart(Application application) {
try{
Duration.create(timeToNextMonday(), TimeUnit.MILLISECONDS),
Duration.create(7, TimeUnit.DAYS),
new Runnable() {
#Override
public void run() {
JPA.withTransaction(new F.Callback0() {
#Override
public void invoke() throws Throwable {
System.out.println("Printing time : " + new Date());
}
});
}
},
Akka.system().dispatcher());
}
catch (Throwable t){
HashMap<String,String> params = new HashMap<>();
Logger.error("{}:params:{}", "error while starting cron for Historical TW questions", params, t);
}
super.onStart(application);
}
//In minutes
private long timeToNextMonday(){
Calendar now = Calendar.getInstance();
while (now.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
now.add(Calendar.DATE, 1);
}
now.set(Calendar.HOUR,11);
now.set(Calendar.AM_PM,Calendar.PM);
now.set(Calendar.MINUTE,50);
now.set(Calendar.SECOND,00);
now.set(Calendar.MILLISECOND,00);
return now.getTime().getTime() - Calendar.getInstance().getTime().getTime();
}
I have a window that contains a HH:mm time TextField in it, in 24 hours format
I need to validate if the user entered any non valid hour, like 28:00, 99:00, 24:01.
What's the best and simpler way to do that ?
some code below of what is currently doing that job wrong and giving errors in date parsed.
Today I get an random hour and an user hit 99:99 in that text field.
This code is not mine, but I gotta fix it.
I am stuck with it, tried to validate as a String is useless, and I cannot find a nice way to make it a Date without having to put year, month, etc... too.
Please forget about the return -1 instead of throwing an exception this is old code and this cannot be changed.
to help understand :
Statics.hF2 = SimpleDateFormat (HH:mm)
this.cmpHora.getText() = Is the field with the value
Statics.df_ddmmyy = Another date format
Statics.m2ms = converts minutes to milliseconds
//CODE
public long getDataEmLong ()
{
try
{
Calendar hour= Calendar.getInstance();
new GregorianCalendar().
hour.setTime( Statics.hF2.parse( this.cmpHora.getText() ) );
return Statics.df_ddmmyy.parse( this.cmpData.getText() ).getTime() + Statics.m2ms( hour.get( Calendar.HOUR_OF_DAY ) * 60 ) + Statics.m2ms( hour.get( Calendar.MINUTE ) );
} catch ( Exception e )
{
e.printStackTrace();
return -1;
}
}
Cheers !
Regular expressions to the rescue:
public boolean validTime24(String time) {
return time.matches("^([01]\d|2[0-3]):[0-5]\d$")
}
This will validate the format of the string. Then you can parse out the time from there.
Insert this in your class, and perform the validateTime method from inside your junk code.
public boolean validateTime(String timeString) {
if (timeString.length() != 5) return false;
if (!timeString.substring(2, 3).equals(":")) return false;
int hour = validateNumber(timeString.substring(0, 2));
int minute = validateNumber(timeString.substring(3));
if (hour < 0 || hour >= 24) return false;
if (minute < 0 || minute >= 60) return false;
return true;
}
public int validateNumber(String numberString) {
try {
int number = Integer.valueOf(numberString);
return number;
} catch (NumberFormatException e) {
return -1;
}
}
You can use JFormattedTextField with proper Date or Time Format set. The field will return you proper values.
Since Java 8 you can use DateTimeFormatter:
public boolean validate(String time) {
try {
DateTimeFormatter timeFormatter = DateTimeFormatter.ofPattern("HH:mm");
timeFormatter.parse(time);
return true;
} catch (DateTimeParseException e) {
return false;
}
}
I have a family tree app which allows you to build nodes. I am stuck on a problem which requires editing a members date of birth. The date of birth is just a string in the following format dd-mm-yyyy. My problem arises when checking if the date of birth is valid (i.e. any parent cannot be younger than a child). So if the node has both parents and children and user selects to edit it's date of birth, the function must continuously check to see whether an age between the two dates has been added. The problem I am having is getting this continual check to occur using the methods I have defined. I'm hoping someone understands the isue and can help. Note checkDOb also sets the dob too. its bad naming on my part.
here is the code:
private void dateCheck(FamilyMember node) {
String dob = enterDateOfBirth();
if (node.hasChildren()) {
node.setDob(dob);
checkDob(node, node.getOldestChild(), 0);
}
FamilyMember parent = null;
if (node.hasMother() && node.hasFather()) {
if (node.getMother().getAge() > node.getFather().getAge()) {
parent = node.getFather();
} else {
parent = node.getMother();
}
checkDob(parent, node, 1);
} else {
//single parent
if (node.hasMother()) {
parent = node.getMother();
checkDob(parent, node, 1);
}
if (node.hasFather()) {
parent = node.getFather();
checkDob(parent, node, 1);
}
}
}
private void checkDob(FamilyMember parent, FamilyMember child, int member) {
out.println(parent.getYear());
out.println(child.getYear());
while (parent.getYear() > child.getYear()) {
out.println("Invalid Date - The Oldest Child of " + parent.getFullName()
+ "(" + child.getFullName() + ")\n cannot older than his/her parents. Try Again.");
out.println();
if (member == 0) {
parent.setDob(enterDateOfBirth());
}
if (member == 1) {
child.setDob(enterDateOfBirth());
}
}
}
private String enterDateOfBirth() {
out.print("Enter Year Of Birth (0 - 2011): ");
String y = in.nextLine();
out.print("Enter Month Of Birth (1-12): ");
String m = in.nextLine();
if (m.trim().equals("")) {
m = "0";
}
if (m.length() == 1) {
m = "0" + m;
}
m += "-";
out.print("Enter Date of Birth (1-31): ");
String d = in.nextLine();
if (d.trim().equals("")) {
d = "0";
}
if (d.length() == 1) {
d = "0" + d;
}
d += "-";
String dob = d + m + y;
while (!DateValidator.isValid(dob)) {
out.println("Invalid date. Try again.");
dob = enterDateOfBirth();
}
return (dob);
}
Thanks in advance.
Well the standard way to parse Dates is using SimpleDateFormat. But I don't think that will help in your case you so I won't go there.
But you should use Date objects (or, as others will say: use JodaTime's DateTime object) when you are talking about Dates, it makes things easier.
make Date the type of dob
and exchange this code:
String dob = d + m + y;
for this:
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, Integer.parseInt(y));
cal.set(Calendar.MONTH, Integer.parseInt(m)-1);
cal.set(Calendar.DATE, Integer.parseInt(d));
Date dob = cal.getTime();
(you should lose all the if (m.length() == 1) stuff, because Strings with leading zeroes will be parsed as octal values)
Now you can just validate that parentBirthDate.compareTo(childBirthDate)>0
Also, to be more precise you should truncate all the fields that are smaller than day:
cal.set(Calendar.HOUR, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
Also: don't use System.out.println(), use a logging framework like Log4J or SLF4J.
Oh, BTW, validating that the child is younger than the parent won't be enough. You will probably have to validate that the difference is 12 years or more :-)
It can be smt like
//return true if one of arguments is true!
private boolean bornBefore(FamilyMember first, FamilyMember second){
if(first == null || second == null){
return true;
}
return /*your magic date comaparator*/;
}
private boolean validDate(FamilyMember node, MagicDate date) {
return bornBefore(node, node.getOldestChild())
&& bornBefore(node.getFather(), node)
&& bornBefore(node.getMother(), node);
}
}
You should decouple your validation and data entry. To start of you have your tree model with the current values and a new string that you want to enter in to change a value.
bool checkDOB(String date, FamilyMember node) {
//return true if date is more recent than any parents of node and
//older than any children of node
}
Now that you have a stand alone validation method, you should call it anytime you are about to add a new node or edit one. Do not change any values in the actual data model until it has been validated This means your tree will always be in a valid state and an edit is just a local operation.