Ios 如何获得准确的电池电量?
这是我的简单batteryLevel测试应用程序的简单代码Ios 如何获得准确的电池电量?,ios,swift,battery,Ios,Swift,Battery,这是我的简单batteryLevel测试应用程序的简单代码 - (void)viewDidLoad { [super viewDidLoad]; UIDevice *device = [UIDevice currentDevice]; device.batteryMonitoringEnabled = YES; mLabel.text = [NSString stringWithFormat:@"%0.5f",device.batteryLevel]; } 这是
- (void)viewDidLoad
{
[super viewDidLoad];
UIDevice *device = [UIDevice currentDevice];
device.batteryMonitoringEnabled = YES;
mLabel.text = [NSString stringWithFormat:@"%0.5f",device.batteryLevel];
}
这是我的应用程序的图像,希望你能看到状态栏电池电量和我的应用程序电池电量。我不知道为什么这些级别不同。。。。?
一个是99%,应用程序级别是0.95,实际上是95%
// Enable this property
UIDevice.current.isBatteryMonitoringEnabled = true
// Then add observer
NotificationCenter.default.addObserver(self, selector: #selector(batteryLevelDidChange(notification:)), name: NSNotification.Name.UIDeviceBatteryLevelDidChange, object: nil)
观察者方法
@objc func batteryLevelDidChange(notification: NSNotification) {
// The battery's level did change
print(UIDevice.current.batteryLevel)
}
观察者方法
@objc func batteryLevelDidChange(notification: NSNotification) {
// The battery's level did change
print(UIDevice.current.batteryLevel)
}