Android monitors (monitors) changes in network connection status in real time

After reading a lot of online, they are not what they want. So I wrote one for reference.

There are many ways to achieve this. I think that if there are any shortcomings and bugs, I hope you can point out and make common progress....

Let's briefly talk about the idea: the system will broadcast when the network changes. So let's listen to the broadcast and use the interface callback to notify the activity to do the corresponding operation..

Steps:

1. Write a tool class to judge the network

2. First write a class to inherit broadcastreceiver. (don't forget to register in the manifest file) (thanks for itzxl's reminder) you need to add permissions in the manifest file < uses permission Android: name = "Android. Permission. Access_network_state" > < / uses Permission >

3. Write a callback interface

4. Baseactivity implements this interface

Upper Code:

Remember to register in manifest

It should be explained that if the mobile phone is not used for a long time with WiFi on, the automatic black screen will turn off the traffic for a long time, so the promotion language of the monitoring status is hidden when it is pulled down and refreshed!