iOS获取手机状态栏上的信息

状态栏上有运营商 信号强度 时间 电量 闹钟 这些信息。通过下面的方法可以获取到相应的信息

NSArray *statusBarSubviews = [[[[[UIApplication sharedApplication] valueForKey:@"_statusBar"] subviews] lastObject] subviews];
    
    for (id subview in statusBarSubviews) {
        /*
         UIStatusBarSignalStrengthItemView //信号强度
            _signalStrengthRaw
            _signalStrengthBars
            _enableRSSI
            _showRSSI
         UIStatusBarServiceItemView  运营商
             _serviceString     中国电信
             _crossfadeString   null
             _crossfadeStep     0
             _maxWidth          1.797693134862316e+308
             _serviceWidth      50
             _crossfadeWidth    0
             _contentType       0
             _loopingNecessaryForString 0
             _loopNowIfNecessary        0
             _loopNowIfNecessary        0
             _loopNowIfNecessary        0
         UIStatusBarDataNetworkItemView 网络状态码
             _dataNetworkType  5
             _wifiStrengthRaw  -62
             _wifiStrengthBars 3
             _wifiLinkWarning  0
             _enableRSSI       0
             _showRSSI         0
         UIStatusBarBatteryItemView 电池标志
             _capacity  95
             _state 1
             _batterySaverModeActive 0
             _accessoryView
             _cachedImageHasAccessoryImage  1
             _cachedCapacity 95
             _cachedAXHUDCapacity 0
             _cachedImageSet
             _cachedBatteryStyle 1
             _cachedAXHUDStyle   0
             _cachedAXHUDImage
         UIStatusBarBatteryPercentItemView //电池百分比 _percentString
         UIStatusBarIndicatorItemView 闹钟
         UIStatusBarTimeItemView 时间
             _timeString 18:02
             _useCustomFadeAnimation 0
         */
        NSLog(@"%@",[subview class]);
        if ([subview isKindOfClass:NSClassFromString(@"UIStatusBarIndicatorItemView")])
        {
            unsigned int outCount =0;
//            遍历成员变量
            Ivar *ivars = class_copyIvarList([subview class], &outCount);
            
            for (int i =0; i < outCount; i++) {
                
                Ivar ivar = ivars[i];
                
                printf("%s\n",ivar_getName(ivar));
                NSLog(@"%@",[subview valueForKey:[NSString stringWithFormat:@"%s",ivar_getName(ivar)]]);
            }
            
        }
        
    }