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2014/10/15 ¤U¤È 10:04:33

iphone Programming Glossary: battery

How to know when the device is charging? [closed]

http://stackoverflow.com/questions/13186203/how-to-know-when-the-device-is-charging

c share improve this question How about this. UIDeviceBatteryState deviceBatteryState UIDevice currentDevice .batteryState if deviceBatteryState UIDeviceBatteryStateCharging deviceBatteryState UIDeviceBatteryStateFull It is charging From.. deviceBatteryState UIDeviceBatteryStateFull It is charging From the apple documentation UIDeviceBatteryState The battery power state of the device. typedef enum UIDeviceBatteryStateUnknown UIDeviceBatteryStateUnplugged UIDeviceBatteryStateCharging.. UIDeviceBatteryStateCharging UIDeviceBatteryStateFull UIDeviceBatteryState UIDeviceBatteryStateUnknown The battery state for the device cannot be determined. UIDeviceBatteryStateUnplugged The device is not plugged into power the battery..

iphone: Calculating battery life

http://stackoverflow.com/questions/1469549/iphone-calculating-battery-life

Calculating battery life Wondering if there are references beyond the Apple tech stats for calculating battery life. I've tried comparing some.. Calculating battery life Wondering if there are references beyond the Apple tech stats for calculating battery life. I've tried comparing some existing battery apps battery left Apple's figures and I dont come up with the same answers.. if there are references beyond the Apple tech stats for calculating battery life. I've tried comparing some existing battery apps battery left Apple's figures and I dont come up with the same answers sometimes. Also there are stats for using 2G..

Measuring velocity via iPhone SDK

http://stackoverflow.com/questions/1994018/measuring-velocity-via-iphone-sdk

basically a speedometer . I know that you can do so via the CoreLocation API fairly easily but I am concerned about battery consumption since this is to be a real time measurement that could be used for up to a couple of hours at a time. My understanding.. are actively monitoring for events from the LocationManager even though I don't actually care about GPS location it is battery intensive. The other obvious option to explore would be using the accelerometers to try and calculate speed but there is..

How to get battery status?

http://stackoverflow.com/questions/330461/how-to-get-battery-status

to get battery status How do I get the battery status on an iPhone iphone cocoa touch share improve this question UIDevice myDevice.. to get battery status How do I get the battery status on an iPhone iphone cocoa touch share improve this question UIDevice myDevice UIDevice currentDevice myDevice.. question UIDevice myDevice UIDevice currentDevice myDevice setBatteryMonitoringEnabled YES float batLeft myDevice batteryLevel int i myDevice batteryState int batinfo batLeft 100 NSLog @ Battry Level is d and Battery Status is d batinfo i switch..

streaming video FROM an iPhone

http://stackoverflow.com/questions/3444791/streaming-video-from-an-iphone

The gap between data transfers allow the antennas to sleep in between if the connection is fast enough saving battery life. Conversely if the connection is slow so upload is slower than recording managing delayed upload of a set of files..

Xcode: Unable to open project… cannot be opened because the project file cannot be parsed

http://stackoverflow.com/questions/361799/xcode-unable-to-open-project-cannot-be-opened-because-the-project-file-canno

because the project file cannot be parsed I have been working for a while to create an iPhone app. Today when my battery was low I was working and constantly saving my source files then the power went out... Now when I plugged my computer back..

What happens to an iPhone app when iPhone goes into stand-by mode?

http://stackoverflow.com/questions/411436/what-happens-to-an-iphone-app-when-iphone-goes-into-stand-by-mode

go to sleep iPhone OS rarely sleeps if the device is connected to main power i.e. via USB . It can sleep if running on battery however. A short time after the screen is locked 20 seconds according to Oliver Drobnik the device sleeps. This is like..

iPhone - Backgrounding to poll for events

http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events

For my own experience I measured something. Using the location callbacks with having the GPS radio on is sucking my battery down very quickly. Using the approach which I posted in Update 2 is taking nearly no energy. According to the userexperience..

How to Sync iPhone Core Data with web server, and then push to other devices?

http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices

should be timestamped so that they can be merged. The device will have to poll the server without using up too much battery. The local devices will also need to update anything held in memory if when changes are received from the server. Is there..

UIScrollView pauses NSTimer until scrolling finishes

http://stackoverflow.com/questions/605027/uiscrollview-pauses-nstimer-until-scrolling-finishes

iPhone add icon in status bar (a la Battery Indicator)

http://stackoverflow.com/questions/1391059/iphone-add-icon-in-status-bar-a-la-battery-indicator

add icon in status bar a la Battery Indicator I was wondering if it is possible to add an icon to the iPhone status bar much like the battery and wifi indicator...

iPhone App floating point calculations when released to the app store.

http://stackoverflow.com/questions/14210621/iphone-app-floating-point-calculations-when-released-to-the-app-store

when released to the app store. I released my first solo iPhone app last week that calculates 12V Marine and Boat Battery usage . I had tested it vigorously on the simulator and on my iPhone and when I was comfortable all was well I archived..

Detect low battery warning ios [duplicate]

http://stackoverflow.com/questions/14834506/detect-low-battery-warning-ios

what to do with the battery Any suggestions would be awesome iphone ios objective c share improve this question Battery monitoring is enabled by setting to YES a property of the UIDevice singleton UIDevice device UIDevice currentDevice device.batteryMonitoringEnabled.. notifications NSNotificationCenter defaultCenter addObserver self selector @selector batteryChanged name @ UIDeviceBatteryLevelDidChangeNotification object device NSNotificationCenter defaultCenter addObserver self selector @selector batteryChanged..

iPhone: Battery functions?

http://stackoverflow.com/questions/2228619/iphone-battery-functions

Battery functions Are there Battery related API s available in iPhone SDK I want to find the battery draining state and other things.. Battery functions Are there Battery related API s available in iPhone SDK I want to find the battery draining state and other things related to battery from..

How to get battery status?

http://stackoverflow.com/questions/330461/how-to-get-battery-status

on an iPhone iphone cocoa touch share improve this question UIDevice myDevice UIDevice currentDevice myDevice setBatteryMonitoringEnabled YES float batLeft myDevice batteryLevel int i myDevice batteryState int batinfo batLeft 100 NSLog @ Battry.. float batLeft myDevice batteryLevel int i myDevice batteryState int batinfo batLeft 100 NSLog @ Battry Level is d and Battery Status is d batinfo i switch i case UIDeviceBatteryStateUnplugged BCStatus setText NSLocalizedString @ UnpluggedKey @ break.. batteryState int batinfo batLeft 100 NSLog @ Battry Level is d and Battery Status is d batinfo i switch i case UIDeviceBatteryStateUnplugged BCStatus setText NSLocalizedString @ UnpluggedKey @ break case UIDeviceBatteryStateCharging BCStatus setText..

Battery drain of iPhone while using location services

http://stackoverflow.com/questions/4435585/battery-drain-of-iphone-while-using-location-services

drain of iPhone while using location services It would be great to know what the battery drain rate is for different accuracy.. polling intervals etc BUT UIDevice has exactly what you need to make your own measurements UIDevice currentDevice setBatteryMonitoringEnabled YES UIDevice currentDevice batteryLevel UIDevice currentDevice batteryState calculate your own statistics..

iPhone: Get warning when battery power is very low

http://stackoverflow.com/questions/4677515/iphone-get-warning-when-battery-power-is-very-low

for the battery level in your app delegate for example. UIDevice myDevice UIDevice currentDevice myDevice setBatteryMonitoringEnabled YES float batteryLevel myDevice batteryLevel Explanation from the docs batteryLevel The battery charge.. The battery charge level for the device. read only @property nonatomic readonly float batteryLevel Discussion Battery level ranges from 0.0 fully discharged to 1.0 100 charged . Before accessing this property ensure that battery monitoring.. this property ensure that battery monitoring is enabled. If battery monitoring is not enabled battery state is UIDeviceBatteryStateUnknown and the value of this property is .0. Availability Available in iOS 3.0 and later. See Also @property batteryState..

iPhone GPS - Battery Draining Extremely Fast

http://stackoverflow.com/questions/8689626/iphone-gps-battery-draining-extremely-fast

GPS Battery Draining Extremely Fast We are developing an app that has heavy GPS usage and we are unable to optimize the battery life...

IPhone vs Android [closed]

http://stackoverflow.com/questions/932522/iphone-vs-android

over to a directory the player will find them and do a reasonable job of sorting them out. No coverflow of course. Battery life on the latest handsets is better than the iPhone. Scrolling is not quite as smooth there's an annoying lag between..