Android调用蓝牙功能
16lz
2021-12-04
Android调用蓝牙功能
- 相关权限
- 具体使用
- 相关方法
相关权限
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /><uses-permission android:name="android.permission.BLUETOOTH_ADMIN" /><uses-permission android:name="android.permission.BLUETOOTH"/>具体使用
相关方法
adapter.startDiscovery(); //开始搜索周围蓝牙设备 adapter.disable(); //关闭本机蓝牙设备 adapter.enable(); //是否可用 开启蓝牙： Intent intent = new Intent(); intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE); intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,200); startActivityForResult(intent,100);public class MainActivity extends AppCompatActivity implements View.OnClickListener { private BluetoothManager manager; private BluetoothAdapter adapter; private MyBroadcastReceiver myBroadcastReceiver; ArrayList<BluetoothDevice> list; ListView listView; MyAdapter myAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initData(); initView(); } public void initView(){ findViewById(R.id.btn_start).setOnClickListener(this); findViewById(R.id.btn_close).setOnClickListener(this); findViewById(R.id.btn_search).setOnClickListener(this); list=new ArrayList<>(); myAdapter=new MyAdapter(list,this); listView=findViewById(R.id.listview); listView.setAdapter(myAdapter); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { try { Method createBond = BluetoothDevice.class.getMethod("createBond"); createBond.invoke(list.get(position)); } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } } }); } public void initData(){ manager= (BluetoothManager) getSystemService(BLUETOOTH_SERVICE); adapter=manager.getAdapter(); IntentFilter intentFilter=new IntentFilter(); intentFilter.addAction(BluetoothDevice.ACTION_FOUND); intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); myBroadcastReceiver = new MyBroadcastReceiver(); registerReceiver(myBroadcastReceiver,intentFilter); } @Override public void onClick(View v) { switch (v.getId()){ case R.id.btn_start: boolean enable = adapter.enable(); if(enable==false){ Intent intent = new Intent(); intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE); intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,200); startActivityForResult(intent,100); } break; case R.id.btn_search: adapter.startDiscovery(); break; case R.id.btn_close: adapter.disable(); list.clear(); myAdapter.notifyDataSetChanged(); break; } } @Override protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) { super.onActivityResult(requestCode, resultCode, data); if(requestCode==100&&resultCode==RESULT_OK){ Toast.makeText(this, "开启成功", Toast.LENGTH_SHORT).show(); } } class MyBroadcastReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); switch (action){ case BluetoothDevice.ACTION_FOUND: BluetoothDevice device=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); list.add(device); myAdapter.notifyDataSetChanged(); break; case BluetoothAdapter.ACTION_DISCOVERY_FINISHED: break; case BluetoothDevice.ACTION_BOND_STATE_CHANGED: BluetoothDevice device1=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); int bondState = device1.getBondState(); if(bondState==BluetoothDevice.BOND_NONE){ Toast.makeText(context, "未找到设备", Toast.LENGTH_SHORT).show(); }else if(bondState==BluetoothDevice.BOND_BONDING){ Toast.makeText(context, "匹配中", Toast.LENGTH_SHORT).show(); }else if(bondState==BluetoothDevice.BOND_BONDED){ Toast.makeText(context, "配对成功", Toast.LENGTH_SHORT).show(); } break; } } }}效果:
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