Below is my code and I am trying to get signal strength through status bar.
UIApplication *app = [UIApplication sharedApplication];
NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
Crash occurred on (iOS 11, Xcode 9, iPhone X):-
[UIStatusBar_Modern valueForUndefinedKey:]: this class is not key value coding-compliant for the key foregroundView
you can use this
NSArray *subviews = nil;
id statusBar = [[UIApplication sharedApplication] valueForKey:@"statusBar"];
if ([statusBar isKindOfClass:NSClassFromString(@"UIStatusBar_Modern")]) {
subviews = [[[statusBar valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
} else {
subviews = [[statusBar valueForKey:@"foregroundView"] subviews];
}
Use This:
- (NSString*)newtworkType {
NSArray *subviews = nil;
id statusBar = [[UIApplication sharedApplication] valueForKey:@"statusBar"];
if ([statusBar isKindOfClass:NSClassFromString(@"UIStatusBar_Modern")]) {
subviews = [[[statusBar valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
} else {
subviews = [[statusBar valueForKey:@"foregroundView"] subviews];
}
NSNumber *dataNetworkItemView = nil;
for (id subview in subviews) {
if([subview isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {
dataNetworkItemView = subview;
break;
}
}
switch ([[dataNetworkItemView valueForKey:@"dataNetworkType"]integerValue]) {
case 0:
return @"No wifi or cellular";
break;
case 1:
return @"2G";
break;
case 2:
return @"3G";
break;
case 3:
return @"4G";
break;
case 4:
return @"LTE";
break;
case 5:
return @"WIFI";
break;
default:
break;
}
return @"";
}