ios UIDeviceBattery【电池的状态处理：电池状态获取及监测、电池电量获取及监测、低电量模式切换监测】

前言

• 需求：电量低于 <= 50 %进行报警

• name:NSProcessInfoPowerStateDidChangeNotification

• UIDeviceBatteryLevelDidChangeNotification

      [[NSNotificationCenter defaultCenter]
       addObserverForName:UIDeviceBatteryLevelDidChangeNotification
       object:nil queue:[NSOperationQueue mainQueue]
       usingBlock:^(NSNotification *notification) {
           // Level has changed
           [UIDevice currentDevice].batteryMonitoringEnabled = YES;
           NSLog(@"Battery Level Change");
           NSLog(@"电池电量：%.2f", [UIDevice currentDevice].batteryLevel);
       }];
  
  

• UIDeviceBatteryStateDidChangeNotification

一、电池状态获取及监测

• code

  #pragma mark - 电池状态获取及监控
  
  -(void)checkAndMonitorBatteryState{
  
  
  
  UIDevice * device = [UIDevice currentDevice];
  
  //是否允许监测电池
  
  //要想获取电池状态和监控电池状态 必须允许
  
  device.ba