如何从iPhone中读取电池盒状态？

Question

可能重复：
How to get battery status?

我在执行中，我想通过编程来读取iPhone的电池状态一个iPhone应用程序。我不知道这是否可能。请给我建议。

Answer 1

读取电池电量和状态，你只需要：

float battLvl = [[UIDevice currentDevice] batteryLevel]; // range is from 0.0 to 1.0 
UIDeviceBatteryState battState = [UIDevice currentDevice] batteryStatus]; 

监测电池的使用水平和状态，你可以做到以下几点：

// enable monitoring and add observers with selector 
UIDevice *device = [UIDevice currentDevice]; 
device.batteryMonitoringEnabled = YES; 
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(batteryChanged:) name:@"UIDeviceBatteryLevelDidChangeNotification" object:device]; 
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(batteryChanged:) name:@"UIDeviceBatteryStateDidChangeNotification" object:device]; 

// Your notification handler 
- (void)batteryChanged:(NSNotification *)notification 
{ 
    UIDevice *device = [UIDevice currentDevice]; 
    NSLog(@"state: %i | charge: %f", device.batteryState, device.batteryLevel); 
} 

Answer 2

的代码下面几行会有所帮助：

[[UIDevice currentDevice] setBatteryMonitoringEnabled:YES]; 

[[UIDevice currentDevice] batteryLevel]; 
[[UIDevice currentDevice] batteryState]; 

有关详细信息，请参阅THIS链接。它会详细说明你。