Captive Portal设置

可以去掉信号标识上面的叹号和叉叉。不建议关闭检测，关闭检测后会导致无法检测网络是否需要认证，需要手动打开认证页面或手动打访问页跳转。

#删除变量：（删除以后默认启用）
adb shell settings delete global captive_portal_mode
#关闭检测：
adb shell settings put global captive_portal_mode 0
#查看当前状态：
adb shell settings get global captive_portal_mode
#删除（删除默认用HTTPS）
adb shell settings delete global captive_portal_https_url
adb shell settings delete global captive_portal_http_url
#分别修改两个地址
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

adb shell settings put global captive_portal_fallback_url http://captive.v2ex.co/generate_204
adb shell settings put global captive_portal_other_fallback_urls http://captive.v2ex.co/generate_204