The Exception Unable to instantiate activity ComponentInfo

If you have this error “Unable to instantiate activity ComponentInfo” in the LogCat of Android just you launch your app, first you have to check the file AndroidManifest.xml especially the code lines

  • package="[your package]"
    it is an attribute of the tag manifest and you insert a unique name for your app in java package style, for example com.example.myapp (see here)
  • android:name=".[your activity]"
    it is an attribute of the tag activity and you insert the class name that implements the activity (see here)

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The android.os.NetworkOnMainThreadException exception

In this article I explain a possible cause of android.os.NetworkOnMainThreadException and how to avoid it.
From the Android site you can read:
NetworkOnMainThreadException
The exception that is thrown when an application attempts to perform a networking operation on its main thread.
This is only thrown for applications targeting the Honeycomb SDK or higher…
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