I would like to know whether or not it is possible to get information on the Battery Discharge Rate of the Blackberry via certain APIs or code snippets?
If anyone has used MeterBerry before, the information available on that app is similar to the kind of information I'd like to show on this application.
Thank you,
The closest I could find is the DeviceInfo -class of the API that provides the method getBatteryLevel:
public static int getBatteryLevel()
Retrieves the current battery level.
Returns:
Percentage of maximum battery level remaining.
Monitoring the change in level over time, you could probably try to measure the speed at which the level is decreasing.
Related
i am using both battery monitors on my pixhawk with Ardurover as fluid flow meters and need to get the data in my ROS ecosystem. After a fair amount of research, I was not able to find a reference to a second battery status besides the one published on
mavros/battery as sensor_msgs/BatteryState. But this seems to be for a single battery
Can someone please tell me that the second monitor is implemented and where to find it.....(please also tell me if this is not implemented yet)
I am working on a feature in an iOS app to send location updates to our backend when there is a change in the location.
Initially, I had set minimalDistanceFilter(minimum change in location value) to none to send location updates. But it is making the network calls continuously and it can increase the load on the backend.
If some of you worked on this case earlier, I wanted to know how you solved it. What can be the minimalDistanceFilter?
I am also curious about how the above-listed apps work with location-related events.
The distanceFilter and the desiredAccuracy go hand-in-hand. For the distance filter, it can be anything between kCLDistanceFilterNone and CLLocationDistanceMax. See the documentation.
Regarding what other people used, it will vary widely from app to app. For navigation apps, you tend to need high accuracy so you don't miss a turn. But a weather app might be perfectly happy with city-level accuracy.
If you really need reasonable precision and want to reduce volume, then a filter of 5–15 meters is a good starting point. Try different values yourself and see what the effect is.
But there is no magical answer to your question. You will have to balance the legitimate needs of your app with (a) the server load; and (b) the power consumption on the device.
By the way, if the app doesn't need high accuracy, you might contemplate the very efficient, but less accurate, significant change service which will report changes of roughly 500 meters, with a frequency not exceeding once every 5 minutes
Finally, remember, nowadays the user is in control of the accuracy. You can request whatever accuracy you want, but if the user wants to preserve their privacy, they can choose not to share their precise location, and there is nothing you can do about it (other than to try to make a case for why precise location data is essential for the proper functioning of your app).
i have developped an IOS application with Xaramin and am trying to find out what is consuming most significantly the battery. The application has three main activities:
Listen to location updates in the background (with AccurityNearestTenMeters and DistanceFilter = 50)
Write all the acquired locations every 10 seconds in a file
Send the file content to a remote server by using a standard HttpClient object
The application is consuming about 50% of the battery after 7 hours or so. It depends on the user movement but let's say that there are plenty of movements by walk, tramway, etc...then a reasonable amount of time where there is much less movements (i.e at work).
I have tried to change the desired accuracy to nearest 100 meter and also change the distance filter. I got some pretty good optimization especially for the accuracy change but i need to have more precise locations so am looking for another possibility if any to optimize the battery.
There are many questions that cross my mind and for which i would like to have your feedbacks please: what is more battery consuming? Location updates or file writing? also the same for a network request so if i put it side by side what does consume more the battery: location updates, file writing or network requests. I mean from a general point of view.
Also, do you guys have any recommendations or information that can help me in this optimization ?
(This question has been asked before, but the last helpful response is from 2013 and is outdated)
My team is currently working on developing an application that will periodically, every 30 min or so, take a users location and store it. The time intervals that we take a users location is not as important as the accuracy of the location. We are trying to balance battery efficiency with location accuracy. One method that we believe will help with battery efficiency is take users location less frequently during non peak use periods. Other than that after reviewing apples best practice documentation it seams like we may be able to use the Significant Location Change Service to activate the Standard Location Service upon significant location change, but I am not sure how accurate this method will be.
What is the best way to periodically take a users location, while conserving battery life?
I would like my iOS app to get notified in background whenever user stops (or slows down below some velocity threshold) at a place while maintaining maximum battery life.
The catch is that I don't really care for accuracy when the user is moving but I need as accurate measurement as possible when user stops or walks around the same spot.
There are many Core Location tools available:
Standard Location Service
Significant Change Location Service
Geofencing and Ranging Service
Integration with Core Motion and M7 Motion Coprocessor
Which one of them should I use? Is there a best practice for what I am attempting to do? Has anybody experience with this sort of stuff? I found this app which does exactly what I want to incorporate in my app but I'm not permitted to use their API.
I've read the documentation but my case doesn't really fit any of the categories they discuss.
Thanks in advance.
Pete.
In iOS8 there is a new technology that fits what it sounds like you are asking for. CLVisit objects are sent to your app in the background when the user arrives or departs after stopping at a location. Power consumption is very low with this feature. You enable it by calling startMonitoringVisits on a CLLocationManager object.