之前获取信号强度的API都不能用了,最近看到一个黑魔法，遍历UIStatusBar获取。
- (void)getSignalStrength{
UIApplication *app = [UIApplication sharedApplication];
NSArray *subviews = [[[app valueForKey:@"statusBar"] valueForKey:@"foregroundView"] subviews];
NSString *dataNetworkItemView = nil;
for (id subview in subviews) {
if([subview isKindOfClass: [NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {
dataNetworkItemView = subview;
break;
}
}
int signalStrength = [[dataNetworkItemView valueForKey:@"_wifiStrengthBars"] intValue];
NSLog(@"signal %d", signalStrength);
}
我们还可以遍历UIStatusBar，获取到网络连接类型。
- (void)getNetworkType
{
UIApplication *app = [UIApplication sharedApplication];
NSArray *subviews = [[[app valueForKeyPath:@"statusBar"] valueForKeyPath:@"foregroundView"] subviews];
for (id subview in subviews) {
if ([subview isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
int networkType = [[subview valueForKeyPath:@"dataNetworkType"] intValue];
switch (networkType) {
case 0:
NSLog(@"NONE");
break;
case 1:
NSLog(@"2G");
break;
case 2:
NSLog(@"3G");
break;
case 3:
NSLog(@"4G");
break;
case 5:
{
NSLog(@"WIFI");
}
break;
default:
break;
}
}
}
}
