<uses-sdk ... android:targetSdkVersion="9" />In the manifest. And Android doesn't complain. Needless to say, its best not to make the user wait for network activity but if its a test app or the like then its no big deal.
Programming Tips - How can I avoid a crash because of "Network activity on main thread"?
Date: 2015may18 OS: Android Q. How can I avoid a crash because of "Network activity on main thread"? A. Of course you can make a thread and put the network stuff there. But here's a trick. You can set the target version to 9