Disable button until bluetooth connected - android-bluetooth

Question

I have an android app that automatically turns on device Bluetooth and connects to a paired device. The device sends data which is updated constantly. If the user presses an enable device button, which is used to initialize the device and begin the operation, before the connection is established, all the previous data is reset.
This is an Android project I was given from an outsourced company so I didn't write the code originally. I have
private void initialize() {
// initializing and launching the Equipment layer api
try {
Utility.writeLogs(this, getString(R.string.info), TAG,
"Initializing EState Manager");
EStateManager.getInstance().launch(getResources());
getInfo();
requestConfiguration();
findViewById(R.id.btn_enable).setVisibility(View.VISIBLE);
handleConnectionDialog();
} catch (Exception e) {
e.printStackTrace();
Utility.writeLogs(this, getString(R.string.error), TAG,
"EStateManger initialization failed");
Utility.writeLogs(this, getString(R.string.error), TAG, e);
}
}
private void handleConnectionDialog() {
ScheduledExecutorService exec = Executors.newSingleThreadScheduledExecutor();
exec.scheduleAtFixedRate(() -> {
// do stuff
if (!EStateManager.getInstance().isDataReceived()) {
if (!new PrefUtil(this).isConnectionDialogEnabled()) {
runOnUiThread(() ->
onShowPopup(Utility.POPUP_MAP.get(14)));
}
} else {
if (!buttonPressed) {
findViewById(R.id.btn_enable).setVisibility(View.VISIBLE);
}
EStateManager.getInstance().setDataReceived(false);
}
}, 5, 5, TimeUnit.SECONDS);
}
I would like to disable the button until Bluetooth is successfully connected to ensure that saved parameters are not changed.

Answer 1

Configure a broadcast receiver to listen for ACTION_STATE_CHANGED
Then check the extra EXTRA_CONNECTION_STATE and enable the button if it is STATE_CONNECTED
Also in the ACTION_STATE_CHANGED receiver, check for STATE_DISCONNECTED, and disabled the button.
Response to comment:
findViewById should be allowed in the receiver if it is defined in the MainActivity.java like so
public class HomeActivity extends Activity {
...
private final BroadcastReceiver mRadioReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
button = (Button) findViewById(R.id.button1);
String action = intent.getAction();
switch (action) {
case ACTION__DEVICE_CONNECTED:
button.setEnabled(true);
break;
case ACTION_DEVICE_DISCONNECTED:
button.setEnabled(false);
break;
}
}
};