Getting Device Battery State iOS

When We need to access the state of the battery for the particular intention in our app we can get it by using following code:

//Get permission for Battery Monitoring[[UIDevice currentDevice] setBatteryMonitoringEnabled:YES];
UIDevice *myDevice = [UIDevice currentDevice];[myDevice setBatteryMonitoringEnabled:YES];
double batLeft = (float)[myDevice batteryLevel] * 100;
NSLog(@"%.f",batLeft);int d = myDevice.batteryState;
//Returns an Integer Value
//UIDeviceBatteryStateUnknown 0
//UIDeviceBatteryStateUnplugged 1
//UIDeviceBatteryStateCharging 2
//UIDeviceBatteryStateFull 3//Using notifications for Battery Monitoring-(void)startMonitoringForBatteryChanges
 {
 // Enable monitoring of battery status
 [[UIDevice currentDevice] setBatteryMonitoringEnabled:YES];
 // Request to be notified when battery charge or state changes
 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(checkBatteryStatus) name:UIDeviceBatteryLevelDidChangeNotification object:nil];[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(checkBatteryStatus) name:UIDeviceBatteryStateDidChangeNotification object:nil];
 }
 -(void) checkBatteryStatus{
NSLog (@"Battery Level is %.f",[[UIDevice currentDevice] batteryLevel]*100);int d=[[UIDevice currentDevice] batteryState];
    if (d==0){
        NSLog(@"Unknown");}
    else if (d==1)
    {NSLog(@"Unplugged");
    }else if (d==2)
    {NSLog(@"Charging");
    }else if (d==3)
    {NSLog(@"Battery Full");
    }
}