iphone - GPS application with CLCorelocation -

-

I am developing a GPS application in which I need to track device / iPhone speed.
I'm using CLCorelocation API to locate the referral code provided by me the apple. My problem is that LocationManager does not update current latitude and longitude, so I'm unable to speed up the device / iPhone as well as calculating distance.

Any kind of suggestion / code will be highly appreciated Please suggest that I can do something with the mapkit framework introduced in SDK 3.0.

Check Apple.

CLLocationManagerDelegate method By implementing locationManager: doneUpdateToLocation: fromLocation : You can get latitude and longitude updates from your CLLocationManager .

Also, since you want to check the speed of the device, you might want to set up distanceFilter and the desired qualification your From CLLocationManager to kCLDistanceFilterNone and kCLLocationAccuracyBest respectively.

If you can get a copy, then one chapter (# 1 4) is dedicated to using CoreLocation which I found beneficial. Lastly, although it is not centered on core lection, Apple's tutorials include core leona data that you can find useful.

Edit: Specific to calculate the speed.


Comments

Post a Comment

Popular posts from this blog

c++ - Linux and clipboard -

-
After selecting the copies of the buffer in Linux, after the text, we can click and paste the button between the mouse. I think there is a special buffer for this, I want to use it. Programming Language: C ++ Your Library: Qt Thanks. There is just one more correct answer than Paul Dixon, which answers your needs: / P > QClipboard * clipboard = QApplication :: clipboard (); CastString Selected Text = Clipboard-> Text (QClipboard :: Selection);
Read more

delphi - Mouseover hint for TChart series value -

-
I am using a TChart in Delphi 7, and I want to display charts sometime. I am using the following code to set the chain value to a database query: chart1.FreeAllSeries; Chart1.SeriesList.Clear; Chart1.AddSeries (TBarSeries.Create (self)); TBarSeries (chart1.Series [0]) BarStyle :. = BsRectGradient; Stop starting with Query 1; Executed; While EOF does not start chart1.Series [0]. Add (field 'flags' ('sum_actual_days'), Field Astrstring ('contract_no')); the upcoming; End; End; Each time (value) is now showing both the label below the bar and in a yellow rectangle above the bar. Rather than repeating the amount of label twice, I have some additional information from the query that I would like to show above the bar rather than the label (or, preferably, as a mouseover signal). Can it be done with TChart? And how ...? This can be done with a TChart using the onMouseMeave event of the chart. Something like this should start with you: Process TForm...
Read more

Visual Studio 2005: How to speed up builds when a VSMDI is open? -

-
Using Visual Studio 2005, if I open the test in VSMFI and try to run the tests, then sometimes the projects are ready. However, they run very slow. CPU 99% waste and output window VS Shows things associated with compiling it. Is there any way to fix this? It does not make any sense. It is not necessary to upgrade that we are a viable alternative to those people who have to deal with the legacy code. Did you try to upgrade SP1? I do not know of any specific problem in this area, but this will be the first change I tried to do.
Read more