首先創(chuàng)建StatusBarTool文件
再拷貝下面的代碼
此方法用到了私有API（不建議使用）
.h文件代碼

#import <UIKit/UIKit.h>
typedef enum {
    NetWorkTypeNone = 0,    //未知網(wǎng)絡(luò)或沒(méi)有網(wǎng)絡(luò)
    NetWorkType2G   = 1,    //2G網(wǎng)絡(luò)
    NetWorkType3G   = 2,    //3G網(wǎng)絡(luò)
    NetWorkType4G   = 3,    //4G網(wǎng)絡(luò)
    NetWorkTypeWiFi = 5,    //WiFi網(wǎng)絡(luò)
    
} NetWorkType;

@interface StatusBarTool : NSObject

/** 獲取當(dāng)前網(wǎng)絡(luò)狀態(tài) */
+ (NetWorkType)currentNetWorkType;

/** 獲取當(dāng)前網(wǎng)絡(luò)運(yùn)營(yíng)商 */
+ (NSString *)serviceCompany;

/** 獲取當(dāng)前電池電量 */
+ (NSString *)currentBatteryPercent;

/** 獲取當(dāng)前時(shí)間 */
+ (NSString *)currentTimeString;

@end

.m文件代碼

#import "StatusBarTool.h"

@implementation StatusBarTool

+ (NSString *)currentBatteryPercent
{
    NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
    for (id info in infoArray) {
        if ([info isKindOfClass:NSClassFromString(@"UIStatusBarBatteryPercentItemView")]) {
            NSString *percentString = [info valueForKey:@"percentString"];
            NSLog(@"電量為： %@",percentString);
            return percentString;
        }
    }
    return @"";
}

+ (NetWorkType)currentNetWorkType
{
    NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
    NetWorkType type;
    for (id info in infoArray) {
        if ([info isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
            type = [[info valueForKey:@"dataNetworkType"] intValue];
            NSLog(@"網(wǎng)絡(luò)狀態(tài)： %d",type);
            return type;
        }
    }
    return NetWorkTypeNone;
}

+ (NSString *)currentTimeString
{
    NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
    
    for (id info in infoArray) {
        if ([info isKindOfClass:NSClassFromString(@"UIStatusBarTimeItemView")]) {
            NSString *timeString = [info valueForKey:@"timeString"];
            NSLog(@"當(dāng)前時(shí)間為：%@",timeString);
            return timeString;
        }
        
    }
    return @"";
}

+ (NSString *)serviceCompany
{
    NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
    
    for (id info in infoArray) {
        if ([info isKindOfClass:NSClassFromString(@"UIStatusBarServiceItemView")]) {
            NSString *serviceString = [info valueForKey:@"serviceString"];
            NSLog(@"運(yùn)營(yíng)商：%@",serviceString);
            return serviceString;
        }
    }
    return @"";
}

@end