Question

为了在iPhone上获得wifi或蜂窝信号强度，我编写了以下代码，作为各种网站的参考，但它不会出现在IF语句中 “ UIStatusBarSignalStrengthItemView”或“ _UIStatusBarCellularSignalView”。

您需要许可吗？

■开发环境

Xcode9.4.1

iPhoneX iOS：11.0.1

■Test1.m

#import "Test1.h"
@implementation Test1 : NSObject 

- (int)antennaBar
{

    NSLog(@"%@",[[[UIApplication sharedApplication]     valueForKeyPath:@"statusBar"] subviews]);

    NSLog(@"antennaBar 1");
    NSLog(@"antennaBar 2");
//    NSArray *subviews = [[[apps valueForKey:@"statusBar"]     valueForKey:@"foregroundView"] subviews];
    NSArray *subviews = nil;
    NSLog(@"antennaBar 3");
    id statusBar = [[UIApplication sharedApplication] valueForKey:@"statusBar"];
    NSLog(@"antennaBar 4");
    if ([statusBar isKindOfClass:NSClassFromString(@"UIStatusBar_Modern")]) {
        NSLog(@"antennaBar 5");
    subviews = [[[statusBar valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
} else {
    NSLog(@"antennaBar 6");
    subviews = [[statusBar valueForKey:@"foregroundView"] subviews];
}
NSLog(@"antennaBar 7");
NSString *dataNetworkItemView = nil;

NSLog(@"antennaBar 8");
for (id subview in subviews) {

    NSLog(@"Class - %@", NSStringFromClass([subview class]));

    NSLog(@"antennaBar aaaaaaa");
    if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarSignalStrengthItemView") class]]) {
        NSLog(@"antennaBar bbbbbb");
        dataNetworkItemView = subview;
        break;
    }
    if([subview isKindOfClass:[NSClassFromString(@"_UIStatusBarCellularSignalView") class]]) {
        NSLog(@"antennaBar eeeeee");
        dataNetworkItemView = subview;

        int fffff = [subview valueForKey:@"numberOfActiveBars"];
        NSLog(@"fffff=%d",fffff);
        break;
    }
}

for (id subview in subviews)
{
    NSLog(@"antennaBar cccccc");
    if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]])
    {
        NSLog(@"antennaBar dddddd");
        [(NSNumber*)[subview valueForKey:@"dataNetworkType"] intValue];
    }
}

NSLog(@"antennaBar 9");


NSLog(@"12345");
id statusBaraaaa = [[UIApplication sharedApplication] valueForKey:@"statusBar"];
NSArray *children = nil;
NSLog(@"23456");
children = [[[statusBaraaaa valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
NSLog(@"34567");
int type = 0;
NSLog(@"45678");
for (id child in children) {
    NSLog(@"56789");
    if ([child isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {
        NSLog(@"67890");
        type = [[child valueForKeyPath:@"dataNetworkType"] intValue];
    }
}

if (type == 0) {
    return NO;
}else{
    return YES;
}

int aaa = [[dataNetworkItemView valueForKey:@"signalStrengthBars"] intValue];


NSLog(@"aaa=%d",aaa);

return aaa;
}

@end

■Test1.h

#import <Foundation/Foundation.h>
#import "UIKit/UIKit.h"

@interface Test1 : NSObject
- (int)antennaBar;
@end

■登出

（ “ <_UIStatusBar：0x14e809020：区域= {\ n bottomLeading = \” <_ UIStatusBarRegion：0x1d013bd00：标识符= bottomLeading，已启用== 1，displayItems = {（\ n）}> \“; \ n ExpandedLeading = \” <_ UIStatusBarRegion：0x1d013bbc0 ：identifier = expandedLeading，enabled = 0，displayItems = {（\ n）}> \“; \ n ExpandedTrailing = \” <_ UIStatusBarRegion：0x1d013bc60：identifier = expandedTrailing，enabled = 0，displayItems = {（\ n）}> \\ <; UI view = <_ UIStatusBarStringView：0x14e825ae0; frame =（14.3333 3.66667; 38.3333 18）; text = '12：10'; userInteractionEnabled = NO; layer = <_UILabelLayer：0x1d0281f40 >>> \ n）}> \“; \ n药片= \“ <_ UIStatusBarRegion：0x1d013b8a0：标识符=药，已启用= 0，displayItems = {（\ n）}> \”; \ n systemUpdates = \“ <_ UIStatusBarRegion：0x 1d0

1

2

3

4

5

7

8

类-UIView

aaaaaaa

类-UIView

aaaaaaa

类-UIView

aaaaaaa

类-UIView

aaaaaaa

类-UIView

aaaaaaa

类-UIView

aaaaaaa

cccccc

9

12345

23456

34567

45678

56789

Answer 1

虽然通过检查状态栏视图层次结构获得信号强度在某些早期版本的iOS中有效，但从iOS 11开始不再有效。另外，依赖内部视图是（而且一直以来）在应用商店审查过程中被拒绝的基础。

没有获得蜂窝信号强度的受支持方法。资料来源：comment on Apple Developer Forum。获得WiFi信号强度的唯一受支持的方法是使用NEHotspotNetwork signalStrength属性。但是此属性仅可用于热点帮助程序和requires a special entitlement。

Answer 2

您可以检索活动酒吧的数量，可能的酒吧数量以及用户是否连接到wifi或蜂窝电话。（我相信这就是“模式”属性/ iVar的用途。）

我已使用inactive和activeColor方法根据信号强度设置wifi和蜂窝数据的颜色，而无需使用活动条形图，因为它是直观表示的。当然，我是在越狱设备上进行调整，并且使用此API并将其隐藏得不好会导致您的应用被拒绝。但无论如何，请尝试_UIStatusBarSignalView以获得所需的信息（当然，仅用于测试目的）。我认为这仅适用于现代状态栏/ iPhone X类型。

    @interface _UIStatusBarSignalView : UIView <_UIStatusBarDisplayable> {
BOOL _smallSize;
BOOL _visible;
long long _numberOfBars;
long long _numberOfActiveBars;
long long _signalMode;
UIColor* _inactiveColor;
UIColor* _activeColor;

 }

 @property (assign,nonatomic) long long numberOfBars;                                                            
 //@synthesize numberOfBars=_numberOfBars - In the implementation block
 @property (assign,nonatomic) long long numberOfActiveBars; 
/* You can use this compared to the output of numberOfBars property to get a     
good idea of signal strength. */
//@synthesize numberOfActiveBars=_numberOfActiveBars - In the implementation    
//block
@property (assign,nonatomic) long long signalMode;  
 //...(more to the interface)
@end

完整的接口可以在这里找到，即使类转储来自11.1.2，我也可以确认它在适用于iPhone X的iOS 12.4上正常工作。 http://developer.limneos.net/?ios=11.1.2&framework=UIKit.framework&header=_UIStatusBarSignalView.h

为什么无法获取UIStatusBarSignalStrengthItemView？

2 个答案: