Crash when running Bluetooth example from Android Docs

[Tobiah]

I'm going through the Bluetooth docs and right off I
am having a problem. The code below is cut right from

http://developer.android.com/guide/topics/connectivity/bluetooth.html

BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}

I'm setting REQUEST_ENABLE_BT to an arbitrary integer.

I tried running this on two devices, starting with
bluetooth off. On the tablet, the app crashes when checking
mBluetoothAdapter.isEnables(). On my Galaxy note 3, it
makes it past that check, but then the app crashes when
startActivityForResult() is called.

There is no output in the Logcat in either case.

Thanks for any help!

Tobiah
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[gjs]

Hi,

On the same page -

BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null) {
// Device does not support Bluetooth
}

Regards
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[Tobiah]

Post by gjs
Hi,
On the same page -
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null) {
// Device does not support Bluetooth
}
Regards

Yeah, I knew that both devices had bluetooth and mBluetoothAdapter was not null.
I actually put that test in there afterward, and it came out false, and the
execution when on to crash as it had before.

Toby
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[Tobiah]

So I tried a third device, and finally got a trace out of Logcat.

It says I don't have the right permissions, but I did put them
into my manifest in the same place as all of my other permissions:

<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

I'm not sure how else to make sure I have the right permissions.

Thanks,

Toby

Post by Tobiah
I'm going through the Bluetooth docs and right off I
am having a problem. The code below is cut right from
http://developer.android.com/guide/topics/connectivity/bluetooth.html
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
I'm setting REQUEST_ENABLE_BT to an arbitrary integer.
I tried running this on two devices, starting with
bluetooth off. On the tablet, the app crashes when checking
mBluetoothAdapter.isEnables(). On my Galaxy note 3, it
makes it past that check, but then the app crashes when
startActivityForResult() is called.
There is no output in the Logcat in either case.
Thanks for any help!
Tobiah

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[Tobiah]

Post by Tobiah
So I tried a third device, and finally got a trace out of Logcat.
It says I don't have the right permissions, but I did put them
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
I'm not sure how else to make sure I have the right permissions.

Meh, something was out of sync. I just played with the manifest a little
more and saved it again and things started working.
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[pdm-tex]

Tobiah,

This is what I used to get adapter:
mBtAdapter = (BluetoothAdapter)
this.getApplicationContext().getSystemService(BLUETOOTH_SERVICE);

Doug

Post by Tobiah
I'm going through the Bluetooth docs and right off I
am having a problem. The code below is cut right from
http://developer.android.com/guide/topics/connectivity/bluetooth.html
BluetoothAdapter mBluetoothAdapter =
BluetoothAdapter.getDefaultAdapter();
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new
Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent,
REQUEST_ENABLE_BT);
}
I'm setting REQUEST_ENABLE_BT to an arbitrary integer.
I tried running this on two devices, starting with
bluetooth off. On the tablet, the app crashes when checking
mBluetoothAdapter.isEnables(). On my Galaxy note 3, it
makes it past that check, but then the app crashes when
startActivityForResult() is called.
There is no output in the Logcat in either case.
Thanks for any help!
Tobiah

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