iOS：是否可以以编程方式读取手机电池百分比？

Question

是否可以通过编程方式读取来自iOS应用的手机电池百分比？

Answer 1

您可以使用以下代码。

if (![[UIDevice currentDevice] isBatteryMonitoringEnabled])
 {
   [[UIDevice currentDevice] setBatteryMonitoringEnabled:YES];
 }
 NSLog(@"battery : %f", [[UIDevice currentDevice] batteryLevel]);

Answer 2

  

您可以使用此代码检查电池状态和寿命

    UIDevice *device = [UIDevice currentDevice];
    [device setBatteryMonitoringEnabled:YES];

    int state = [device batteryState];
    // 0 - UnKnown 1 - UnPlugged 2 - Charging 3 - Full
    NSLog(@"Battery Current State : %d",state);     

    double batteryPer = (float) [device batteryLevel] * 100;
    NSLog(@"Battery Percentage Left: %ld", batteryPer);

Answer 3

Swift版本。

if !(UIDevice.currentDevice.isBatteryMonitoringEnabled){
    UIDevice.currentDevice.isBatteryMonitoringEnabled = true
}
print("Battery level: \(UIDevice.currentDevice.batteryLevel)")