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Samebug tips

  1. ,
    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.

  2. ,

    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();

Solutions on the web

via Stack Overflow by sanketh
, 2 years ago
via Stack Overflow by user1457104
, 2 years ago
This exception has no message.
via Stack Overflow by Unknown author, 2 years ago
via Stack Overflow by Zhen Chua
, 2 years ago
via Stack Overflow by BangBoat
, 2 years ago
This exception has no message.
android.os.NetworkOnMainThreadException: 	at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(	at	at	at javax.mail.internet.InternetAddress.getLocalAddress(	at javax.mail.internet.UniqueValue.getUniqueMessageIDValue(	at javax.mail.internet.MimeMessage.updateMessageID(	at javax.mail.internet.MimeMessage.updateHeaders(	at javax.mail.internet.MimeMessage.saveChanges(	at javax.mail.Transport.send(	at com.example.emailsendnoui.sending.send(	at com.example.emailsendnoui.MainActivitySecond.send_mail(	at com.example.emailsendnoui.MainActivitySecond.access$0(	at com.example.emailsendnoui.MainActivitySecond$1.onClick(	at android.view.View.performClick(	at android.view.View$	at android.os.Handler.handleCallback(	at android.os.Handler.dispatchMessage(	at android.os.Looper.loop(	at	at java.lang.reflect.Method.invokeNative(Native Method)	at java.lang.reflect.Method.invoke(	at$	at	at dalvik.system.NativeStart.main(Native Method)