android 蓝牙2.0 demo,Android蓝牙2.0开发
因项目需要，做一个与2.0蓝牙模块连接的Demo，在此记录一下
1.先注册个广播，来接收一下蓝牙的状态
MyBroadCastRevciver broadcastReceiver = null;
public void registerBroadcast(){
broadcastReceiver = new MyBroadCastRevciver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
intentFilter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
intentFilter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);
registerReceiver(broadcastReceiver, intentFilter);
}
private String mac;
class MyBroadCastRevciver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
switch (intent.getAction()) {
case BluetoothDevice.ACTION_FOUND:
Log.d("TAG", "找到蓝牙");
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
mac = device.getAddress();
break;
case BluetoothDevice.ACTION_BOND_STATE_CHANGED:
device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
switch (device.getBondState()) {
case BluetoothDevice.BOND_NONE:
Log.d("TAG", "取消配对");
break;
case BluetoothDevice.BOND_BONDING:
Log.d("TAG", "配对中");
break;
case BluetoothDevice.BOND_BONDED:
Log.d("TAG", "配对成功");
break;
}
break;
case BluetoothDevice.ACTION_ACL_CONNECTED:
Log.d("TAG", "连接");
break;
case BluetoothDevice.ACTION_ACL_DISCONNECTED:
Log.d("TAG", "断开");
break;
default:
break;
}
}
}
2.获取BluetoothAdapter并初始化蓝牙，此类是操作本地蓝牙的适配器
BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
if (defaultAdapter == null ){
Log.d("TAG","此设备不支持蓝牙");
}
if(!defaultAdapter.isEnabled()){
//蓝牙未打开，开启蓝牙
activity.startActivityForResult(new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE),1);
}
3.搜索蓝牙
/**
* 搜索蓝牙
*/
public void searchBlueTooth() {
if (defaultAdapter != null) {
Log.d("TAG", "搜索蓝牙");
if (！defaultAdapter.isDiscovering()) {
defaultAdapter.startDiscovery();
}
}
}
4.找到目标蓝牙后需要先配个对
private void bondDevice(){
BluetoothDevice device = null;
if (defaultAdapter != null) {
device = defaultAdapter.getRemoteDevice(mac);
}
if (device.getBondState() == BluetoothDevice.BOND_BONDED) {
Log.d("TAG", "已配对");
} else {
Log.d("TAG", "配对");
Method method = BluetoothDevice.class.getMethod("createBond");
method.invoke(device);
}
}
5.配对后就可以连接了
class BlueToothThread extends Thread {
BluetoothDevice device;
BluetoothSocket socket;
public BlueToothThread(BluetoothDevice device) {
this.device = device;
}
@Override
public void run() {
try {
Log.d("TAG", "连接蓝牙");
socket = device.createRfcommSocketToServiceRecord(ECG_UUID);
//在连接过程中，会出现java.io.IOException: read failed, socket might closed or timeout, read ret: -1,目前还没什么找到太好的解决方案
socket.connect();
InputStream inputStream = null;
OutputStream outputStream = null;
if (socket != null) {
Log.d("TAG", "获取输入流");
inputStream = socket.getInputStream();
outputStream = socket.getOutputStream();
}
byte[] bytes = new byte[100];
if (inputStream != null) {
while (true) {
int read = inputStream.read(bytes);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}