iOS開發之獲取WIFI信號強度

雖然各種直接獲取信號強度的api都被封殺了。但是還有一個另類的黑魔法可以獲取到。那就是遍歷UIStatusBar了

 

- (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);
}

 

當然我們還可以遍歷UIStatusBar 獲取到網絡連接類型

- (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;
            }
        }
    }
}