runtime获取当前状态栏网络连接

// 状态栏由控制器控制的, 首先获取当前app
UIApplication * app = [UIApplication sharedApplication];

// 便利当前app的所有属性

// unsigned int outCount = 0;
// id statusBar = [app valueForKeyPath:@"statusBar"];
// Ivar *ivars = class_copyIvarList([statusBar class], &outCount);
//
// for (int i = 0; i < outCount; i++) {
//
// Ivar ivar = ivars[i];
// printf("aaa = |%s i = %d\n", ivar_getName(ivar), i);
//// NSLog(@"i = %d",i);
// }
NSArray *children = [[[app valueForKeyPath:@"statusBar"] valueForKeyPath:@"foregroundView"] subviews];
int type = 0;
for (id child in children) {
// NSLog(@"child = %@", [child class]);
// if ([child isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
// // 遍历当前状态栏的所有属性，找到关于状态栏的
// unsigned int outCount = 0;
// Ivar *ivars = class_copyIvarList([child class], &outCount);
//
// for (int i = 0; i < outCount; i++) {
// Ivar ivar = ivars[i];
// printf("i= %d |%s\n", i, ivar_getName(ivar));
// }
// }
if ([child isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
type = [[child valueForKeyPath:@"dataNetworkType"] intValue];
}

}

NSLog(@"----%d", type);