android.os.NetworkOnMainThreadException: This exception has no message.

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via Stack Overflow by Razgriz

Happens when you make a network call on the main UI thread of the Android application which results in a UI freeze until the network call is complete and the response is received. Instead, execute the network calls in the background: use AsyncTask.

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An alternative for just getting rid of the Exception is use StrictMode.ThreadPolicy to force execute on main thread.

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);

Solutions on the web

via GitHub by imujjwal96
, 1 year ago
via GitHub by ViWu
, 4 months ago
This exception has no message.
via jtds by mrkbm
, 5 months ago
This exception has no message.
via Stack Overflow by Andrey Andreev
, 1 year ago
This exception has no message.
via Stack Overflow by MRefaat
, 2 years ago
android.os.NetworkOnMainThreadException:
at libcore.io.BlockGuardOs.recvfrom(BlockGuardOs.java:249)
at libcore.io.IoBridge.recvfrom(IoBridge.java:549)
at java.net.PlainSocketImpl.read(PlainSocketImpl.java:481)

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