之前写的博客都被移除了，也不知道什么原因，可能是字体太少了，我不喜欢怎么说，直接上源码比较好一点
我相信程序员都这样，除非代码难懂就会去解说一下，
先看下效果图：
看下java代码
public class MainActivity extends Activity {
private ListView lv;
private BluetoothAdapter adapter;
private MyReciver myReciver;
private ArrayList<String> list;
private ArrayAdapter<String> adapters;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv = (ListView) findViewById(R.id.lv);
//2、得到适配器
adapter = BluetoothAdapter.getDefaultAdapter();
list = new ArrayList<String>();
adapters = new ArrayAdapter<String>(
this,
android.R.layout.simple_list_item_1,
android.R.id.text1,
list);
lv.setAdapter(adapters);
}
public void da(View view){
//3、打开蓝牙-----两种方式：调用系统方式2、强行打开
if(!adapter.isEnabled()){//判断是否打开
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);//请求被发现
startActivityForResult(intent, 100);//打开会返回资源
}
// if(!adapter.isEnabled()){
// adapter.enable();//强行打开
// }
//4、设置可见
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);//设置可见
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);//秒
startActivity(intent);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(resultCode==Activity.RESULT_OK){
Toast.makeText(this, "已经打开", 0).show();
}else{
Toast.makeText(this, "失败", 0).show();
}
}
public void sao(View view){
list.clear();
//5、扫描蓝牙
IntentFilter intentFilter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
myReciver = new MyReciver();
registerReceiver(myReciver, intentFilter);
//开始扫描
adapter.startDiscovery();
}
public void guan(View view){
if(adapter.isEnabled()){
adapter.disable();//关闭蓝牙
}
}
public void cha(View view){
//得到已经配对的
Set<BluetoothDevice> devices = adapter.getBondedDevices();
list.clear();
for (BluetoothDevice bluetoothDevice : devices) {
list.add(bluetoothDevice.getName()+"\n"+bluetoothDevice.getAddress());
adapters.notifyDataSetChanged();
}
}
class MyReciver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
// 当系统发现设备就发送一次广播，接收广播，得到该蓝牙设备
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if(!list.contains(device.getName()+"\n"+device.getAddress())){
list.add(device.getName()+"\n"+device.getAddress());
adapters.notifyDataSetChanged();
}
}
}
}
上面的基本都有注释，不懂的可以联系我
使用蓝牙是需要权限的
<uses-permission android:name="android.permission.BLUETOOTH"/> <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
