How to access value of an extra

Question

I want to access the extras contained in the BluetoothDevice.ACTION_FOUND, for example if i want to access the value containd in BluetoothDevice.EXTRA_CLASS, I should use it as shown below in the code, but when I display the value of the variable "state", it was something like -245175

Are there other values contined inside BluetoothDevice.EXTRA_CLASS? how should i know them? and how should i access them?

update:

intent i am registered to is : BluetoothDevice.ACTION_FOUND

code:

switch (action) {
        case BluetoothDevice.ACTION_FOUND:
            Log.d(TAG, LogAnd.i("onReceive", "BluetoothDevice.ACTION_FOUND"));

            final int state = intent.getIntExtra(BluetoothDevice.EXTRA_CLASS, BluetoothAdapter.ERROR);
            Log.d(TAG, LogAnd.i("onReceive", "state: "+state));
            break;

Answer 1

You're using getIntExtra(), but the extra value isn't an integer. It still "works", but the content is interpreted in the wrong way, so you get a meaningless value.

The docs for EXTRA_CLASS say:

Used as a Parcelable BluetoothClass extra field in ACTION_FOUND and ACTION_CLASS_CHANGED intents.

You should use getParcelableExtra() instead. That should give you an instance of the correct class out. Like so:

BluetoothClass bclass = (BluetoothClass)intent.getParcelableExtra(BluetoothDevice.EXTRA_CLASS);