adb shell "settings put global captive_portal_http_url http://captive.v2ex.co/generate_204"
adb shell "settings put global captive_portal_https_url https://captive.v2ex.co/generate_204"
安卓7.1+wifi有叉问题解决
原文：http://www.cnblogs.com/snow365/p/7478512.html
