iOS状态栏获取网络类型,运营商,电池电量,显示的系统时间等信息

此篇文章讲述iOS中的状态栏

iOS开发中对状态栏的操作比较少,因为状态栏是系统级别的View,是受苹果保护的,不可以随便更改,不可以随便遮挡住。如果违反这些苹果的规范,那么APP将有可能上不了架。笔者就增写过一个APP,因状态栏被提示框遮挡而被拒(杯具)了。

iOS开发中最常见的对状态栏的操作就是设置状态栏的样式,比如: [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];(此样式的状态栏中的字为白色,所以用在导航栏为深色的情况下,例如黑色或者红色的导航栏)

还有 
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleDefault];(此样式的状态栏中的字为黑色色,所以用在导航栏为浅色色的情况下,比如白色的导航栏) 
如果你设置了,发现状态栏没反应,那么你要去info.plist中加一个key,这个key为View controller-based status bar appearance,对应的value为NO。这样每个vc中就可以随便设置状态栏的样式了。

那么实际上我们可以拿到状态栏这个UIView对象。为了不让苹果看到我们用了某某私有API,我们这样做: 

- (UIView*)statusBarView; 
 { 
 UIView *statusBar = nil; 
 NSData *data = [NSData dataWithBytes:(unsigned char []){0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x42, 0x61, 0x72} length:9]; 
 NSString *key = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; 
 id object = [UIApplication sharedApplication]; 
 if ([object respondsToSelector:NSSelectorFromString(key)]) statusBar = [object valueForKey:key]; 
 return statusBar; 
 }


调用这个方法就可以拿到系统的状态栏对象,是个UIView,那么UIView我们最熟悉了,我们可以改变状态栏的颜色,大小位置(frame)等等。

下面我们要从状态栏中获取我们想要的信息 
定义一个工具类StatusBarTool,用来获取网络类型,运营商,电池电量,显示的系统时间等信息。那么直接看代码: 
.h文件 

#import < Foundation/Foundation.h > 
 #import < UIKit/UIKit.h > //0 - 无网络 ; 1 - 2G ; 2 - 3G ; 3 - 4G ; 5 - WIFI
 typedef NS_ENUM(NSUInteger, NetWorkType) { 
 NetWorkTypeNone=0, 
 NetWorkType2G=1, 
 NetWorkType3G=2, 
 NetWorkType4G=3, 
 NetWorkTypeWiFI=5, 
 }; @interface StatusBarTool : NSObject 
 /** 
 * 
 * 
 * @return 当前网络类型 
 */ 
 +(NetWorkType )currentNetworkType; /** 
 * 
 * 
 * @return SIM卡所属的运营商(公司) 
 */ 
 +(NSString *)serviceCompany; /** 
 * 
 * 
 * @return 当前电池电量百分比 
 */ 
 +(NSString *)currentBatteryPercent; /** 
 * 
 * 
 * @return 当前时间显示的字符串 
 */ 
 +(NSString *)currentTimeString; @end 
 .m实现文件(很重要) 
 #import “StatusBarTool.h” @ implementation StatusBarTool
 +(NSString *)currentBatteryPercent{  
 NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKeyPath:@”statusBar”] valueForKeyPath:@”foregroundView”] subviews]; for (id info in infoArray) 
 { 
 if ([info isKindOfClass:NSClassFromString(@”UIStatusBarBatteryPercentItemView”)]) 
 { 
 NSString *percentString = [info valueForKeyPath:@”percentString”]; 
 NSLog(@”电量��为:%@”,percentString); 
 return percentString; 
 } 
 } 
 return @”“; 
 }  
 +(NetWorkType )currentNetworkType{ NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKeyPath:@”statusBar”] valueForKeyPath:@”foregroundView”] subviews];
 NetWorkType type; 
 for (id info in infoArray) 
 { 
 if ([info isKindOfClass:NSClassFromString(@”UIStatusBarDataNetworkItemView”)]) { 
 type = [[info valueForKeyPath:@”dataNetworkType”] integerValue]; 
 NSLog(@”—-%lu”, (unsigned long)type);return (NetWorkType)type;
} } 
 return NetWorkTypeNone; 
 }  
 +(NSString *)currentTimeString{  
 NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKeyPath:@”statusBar”] valueForKeyPath:@”foregroundView”] subviews]; for (id info in infoArray) 
 { 
 if ([info isKindOfClass:NSClassFromString(@”UIStatusBarTimeItemView”)]) 
 { 
 NSString *timeString = [info valueForKeyPath:@”timeString”]; 
 NSLog(@”当前显示时间为:%@”,timeString); 
 return timeString; 
 } 
 } 
 return @”“; 
 } +(NSString *)serviceCompany{  
 NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKeyPath:@”statusBar”] valueForKeyPath:@”foregroundView”] subviews]; for (id info in infoArray) 
 { 
 if ([info isKindOfClass:NSClassFromString(@”UIStatusBarServiceItemView”)]) 
 { 
 NSString *serviceString = [info valueForKeyPath:@”serviceString”]; 
 NSLog(@”公司为:%@”,serviceString); 
 return serviceString; 
 } 
 } 
 return @”“; 
 }  
 @end 用StatusBarTool这个类的时候
 NSString *company = [StatusBarTool serviceCompany];  
 NSLog(@”company = %@”,company);  
 company = 中国移动  
 NetWorkType type = [StatusBarTool currentNetworkType];  
 NSLog(@”type = %ld”,type);  
 type = 5(5代表Wi-Fi)  
 /*typedef NS_ENUM(NSUInteger, NetWorkType) {  
 NetWorkTypeNone=0,  
 NetWorkType2G=1,  
 NetWorkType3G=2,  
 NetWorkType4G=3,  
 NetWorkTypeWiFI=5,  
 };*/  
 NSString *batteryPercent = [StatusBarTool currentBatteryPercent];  
 NSLog(@”batteryPercent = %@”,batteryPercent);  
 batteryPercent �� = 96% NSString *timeString = [StatusBarTool currentTimeString];  
 NSLog(@”timeString = %@”,timeString);  
 timeString = 12:57

好了,到此我们已经拿到了网络状态,运营商,电池电量百分比,时间显示等信息了。