藍芽廣播接收器

在清單檔案中新增許可權

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

在你的片段（或活動）

• 新增接收方法

private BroadcastReceiver mBluetoothStatusChangedReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        final Bundle extras = intent.getExtras();
        final int bluetoothState = extras.getInt(Constants.BUNDLE_BLUETOOTH_STATE);
        switch(bluetoothState) {
            case BluetoothAdapter.STATE_OFF:
                // Bluetooth OFF
                break;
            case BluetoothAdapter.STATE_TURNING_OFF:
                // Turning OFF
                break;
            case BluetoothAdapter.STATE_ON:
                // Bluetooth ON
                break;
            case BluetoothAdapter.STATE_TURNING_ON:
                // Turning ON
                break;
    }
};

註冊廣播

• 在 onResume() 上呼叫此方法

private void registerBroadcastManager(){
    final LocalBroadcastManager manager = LocalBroadcastManager.getInstance(getActivity());
    manager.registerReceiver(mBluetoothStatusChangedReceiver, new IntentFilter(Constants.BROADCAST_BLUETOOTH_STATE));
}

取消註冊廣播

• 在 onPause() 上呼叫此方法

private void unregisterBroadcastManager(){
    final LocalBroadcastManager manager = LocalBroadcastManager.getInstance(getActivity());
    // Beacon 機能用
    manager.unregisterReceiver(mBluetoothStatusChangedReceiver);
}