蓝牙设备有哪些信誉好的足球投注网站安卓原理.docx

1、获得蓝牙适配器就是这个东东：BluetoothAdapter?adapter = BluetoothAdapter.getDefaultAdapter();然后判断设备是否支持蓝牙，现在的手持设备应该都支持吧，蓝牙4.0都在普及了。如果支持蓝牙，看蓝牙是否打开，没有则打开。代码如下：[java]?/shuyou612/article/detailsiew plain/shuyou612/article/detailsopyspan?style=white-space:pre?/span/**??*?检查设备是否支持蓝牙,若支持则打开??*/??private?void?checkBluetooth()?{???adapter?=?BluetoothAdapter.getDefaultAdapter();???if?(adapter?==?null)?{???//?设备不支持蓝牙??Toast.makeText(this,?设备不支持蓝牙,?Toast.LENGTH_SHORT).show();???}else?{???//?判断蓝牙是否打开，如果没有则打开蓝牙??//?adapter.enable()?直接打开蓝牙，但是不会弹出提示，以下方式会提示用户是否打开??if?(!adapter.isEnabled())?{???Intent?intent?=?new?Intent();???//打开蓝牙设备??intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE);???//是设备能够被有哪些信誉好的足球投注网站??intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);???//?设置蓝牙可见性，最多300秒??intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,?300);???startActivity(intent);???}?}???}??2、获取本机已经配对的蓝牙设备关键就是这句了：SetBluetoothDevice devices = adapter.getBondedDevices();可以放到list集合中，以便在ListView中显示。bondedDevicesList.addAll(devices);代码如下：[java]?/shuyou612/article/detailsiew plain/shuyou612/article/detailsopyspan?style=white-space:pre?/span/**??*??获取所有已经绑定的蓝牙设备??*/??private?void?getBondedDevices()?{???bondedDevicesList.clear();???SetBluetoothDevice?devices?=?adapter.getBondedDevices();?bondedDevicesList.addAll(devices);???//为listview动态设置高度（有多少条目就显示多少条目）??setListViewHeight(bondedDevicesList.size());???mBondedAdapter.notifyDataSetChanged();???}??3、注册用以接收到已有哪些信誉好的足球投注网站到的蓝牙设备的receiver注册receiver[java]?/shuyou612/article/detailsiew plain/shuyou612/article/detailsopyspan?style=white-space:pre?/span//?注册用以接收到已有哪些信誉好的足球投注网站到的蓝牙设备的receiver????IntentFilter?mFilter?=?new?IntentFilter(BluetoothDevice.ACTION_FOUND);???mFilter.addAction(BluetoothDevice.ACTION_FOUND);???mFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);???mFilter.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED);???mFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);???mFilter.addAction(Bluet