Location variable returns Not a Number

[lin88xu]

Hi an issue occurred when I try to debug a application that uses Android.location.Location. When simulating using the avd, a breakpoint near the android Location variable shows that the latitude and longitude as NaN (Not a Number). May I know if this should be the case?

[adelphes]

Hi @lin88xu - thanks for reporting this. It looks the latitude and longitude values are stored internally as doubles in the Location object, initialised to zero, so it shouldn't be displaying them as NaN. I suspect one of the following is happening:

• your emulator is setting them to NaN because the emulated location service is disabled (or not working properly), or
• the Android debugger is failing to convert the doubles from the binary format received from the emulator to a JS number.

It would help if you could supply a small working example of the failure, or let me know a) if you're manually setting the location in the emulator settings and b) what you are expecting the values to be.

Thanks.

[lin88xu]

Hi adelphs,

Sorry for the late reply, took a while to replicate the error From this screenshot, I have put a breakpoint on the onLocationChange method by android.Location.location object. I used the extended controls of the android emulator to create a dummy location, which shows up on the app as seen. However, the same numbers, latitude, logitude ect were not shown on the debugger, specifically the variable window or when I mouse over the loc object, as highlighted by the red circle

Is this behavior expected? Am I missing something when I launch my android emulator? I am launching it with the following command:

emulator.exe -avd Test -gpu host -netdelay none -netspeed full -feature WindowsHypervisorPlatform

Thanks!

[adelphes]

Thanks for the screenshot - this does look like a problem with the Android debugger. I will look into this a bit more and update you when I find out what is happening.