java.lang.RuntimeException

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tip

Any worker thread runs in background, since it is not intended to loop, is not connected to a Looper.for example doInBackground().
its implementation returns will be passed to onPostExecute() which runs on the UI thread.

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  • java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() at android.os.Handler.<init>(Handler.java:121) at android.bluetooth.BluetoothAdapter$1.<init>(BluetoothAdapter.java:961) at android.bluetooth.BluetoothAdapter.<init>(BluetoothAdapter.java:961) at android.bluetooth.BluetoothAdapter.getDefaultAdapter(BluetoothAdapter.java:308) at com.mixpanel.android.mpmetrics.MixpanelAPI.getDefaultEventProperties(MixpanelAPI.java:973) at com.mixpanel.android.mpmetrics.MixpanelAPI.track(MixpanelAPI.java:239)

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