Monitoring of iOS Batteries

#import "ViewController.h"

#import <UIKit/UIKit.h>

@interface viewcontroller ()

@property (nonatomic,readonly) float batterylevel ns_available_ios (3_0);

//0.. 1.0. -1.0 If Uidevicebatterystateunknown it returns a floating-point value between 0.00-1.00.

@end

@implementation Viewcontroller

-(void) viewdidload {

[super viewdidload];

// turn on battery monitoring

[uidevice currentdevice]. batterymonitoringenabled = YES ;

// Get the status of the battery

< Span style= "color: #000000;" >    uidevicebatterystate Batterystate = [ Uidevice currentdevice ]. batterystate

// get the remaining power range between 0.000000 to 1.000000

cgfloat batterylevel = [uidevice currentdevice ]. Batterylevel ;

The state of//battery is divided into:

    /*

Uidevicebatterystateunknown, Unknown

uidevicebatterystateunplugged,// not charging

uidevicebatterystatecharging,// Charging now

uidevicebatterystatefull,// Full power

*/

if (batterystate = = uidevicebatterystateunknown) {

self. Dllabel . text = [nsstring stringwithformat:@ "%0.0f%%", batterylevel*];

NSLog(@ "Unknow");

}else{

NSLog(@ "know");

// The remaining power is displayed with a label .

self. Dllabel . text = [nsstring stringwithformat:@ "%0.0f%%", batterylevel*];

}

//

[Self getcurrentbatterylevel];

[Uidevice currentdevice].batterymonitoringenabled = YES;

[[Nsnotificationcenter Defaultcenter]

Addobserverforname:uidevicebatteryleveldidchangenotification

Object:nil Queue:[nsoperationqueue Mainqueue]

usingblock:^ (Nsnotification *notification) {

Level have changed

Dl=[uidevice Currentdevice].batterylevel;

//NSLog (@ " battery charge:%.2f", [Uidevice currentdevice].batterylevel);

//

Self.dlLabel.text = [NSString stringwithformat:@ "%f", [Uidevice currentdevice].batterylevel];

//

//     }];

Additional setup after loading the view, typically from a nib.

}

This article is from the "zhuoking" blog, make sure to keep this source http://9951038.blog.51cto.com/9941038/1831784

Monitoring of iOS Batteries