本文介绍了检测到电池警告显示为iPhone的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
是否可以检测是否显示了电池电量警告?我向UIApplicationDidBecomeActiveNotification注册了一个通知,我想知道它是否是由于电池电量不足警告而触发的,所以我可以进行不同的处理.
Is there a way to detect whether a battery level warning was shown? I registered a notification to UIApplicationDidBecomeActiveNotification and I want to know whether it was triggered due to a low battery warning so I can handle it differently.
推荐答案您可以通过编程方式监控电池电量,当电池电量达到一定水平时,便可以处理事件了.
You can monitor the battery level programmatically, and when it reaches a certain level, you can handle your event then.
-(NSString*)batteryStateStatus:(UIDeviceBatteryState)state{ switch ( state ) { case UIDeviceBatteryStateUnknown: return @"Unknown"; break; case UIDeviceBatteryStateUnplugged: return @"Unplugged"; break; case UIDeviceBatteryStateCharging: return @"Charging"; case UIDeviceBatteryStateFull: return @"Charged"; } return nil; } -(NSString *)getBatteryPercent { CFTypeRef blob = IOPSCopyPowerSourcesInfo(); CFArrayRef sources = IOPSCopyPowerSourcesList(blob); CFDictionaryRef pSource = NULL; const void *psValue; NSString *thePercent; int i; int curCapacity = 0; int maxCapacity = 0; int percent; int numOfSources = CFArrayGetCount(sources); //if (numOfSources == 0) return 1; for (i = 0 ; i < numOfSources ; i++) { pSource = IOPSGetPowerSourceDescription(blob, CFArrayGetValueAtIndex(sources, i)); //if (!pSource) return 2; psValue = (CFStringRef)CFDictionaryGetValue(pSource, CFSTR(kIOPSNameKey)); psValue = CFDictionaryGetValue(pSource, CFSTR(kIOPSCurrentCapacityKey)); CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &curCapacity); psValue = CFDictionaryGetValue(pSource, CFSTR(kIOPSMaxCapacityKey)); CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &maxCapacity); percent = (int)((double)curCapacity/(double)maxCapacity * 100); } return [NSString stringWithFormat:@"%d",percent]; }更多推荐
检测到电池警告显示为iPhone
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