How the callback method in Android changes to the blocking execution method

Source: Internet
Author: User

The project needs to use in the WiFi this piece, scan nearby WiFi, and then traverse all the WiFi, and try to connect, so here you need to block each Wi-Fi connection, when the connection fails to try the next connection, when the connection is successful, then break.

We can still add an identity to the callback method:

int flag = 0;

public void Callback ()

{

flag = 1;

}

The blocking method can be written in this way.

 Public void Fun ()    {
... while (true) { if (flag = = 1) { break; }} }

It is possible to use a sign to circle the judgment. Of course, there is a time problem to consider, otherwise it will continue to circulate.

How the callback method in Android changes to the blocking execution method

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