Android 扫描附近的蓝牙设备并连接蓝牙音响的示例
写了一个可以扫描附近蓝牙设备的小Demo,可以查看蓝牙设备的设备名和Mac地址
代码量不多,很容易看懂
/** *作者:叶应是叶 *时间:2017/9/820:13 *描述: */ publicclassScanDeviceActivityextendsAppCompatActivity{ privateLoadingDialogloadingDialog; privateDeviceAdapterdeviceAdapter; privateBluetoothAdapterbluetoothAdapter; privateHandlerhandler=newHandler(); privateBroadcastReceiverdiscoveryReceiver=newBroadcastReceiver(){ @Override publicvoidonReceive(Contextcontext,Intentintent){ switch(intent.getAction()){ caseBluetoothAdapter.ACTION_DISCOVERY_STARTED: showLoadingDialog("正在搜索附近的蓝牙设备"); break; caseBluetoothAdapter.ACTION_DISCOVERY_FINISHED: Toast.makeText(ScanDeviceActivity.this,"搜索结束",Toast.LENGTH_SHORT).show(); hideLoadingDialog(); break; caseBluetoothDevice.ACTION_FOUND: BluetoothDevicebluetoothDevice=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); deviceAdapter.addDevice(bluetoothDevice); deviceAdapter.notifyDataSetChanged(); break; } } }; @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_scan_device); BluetoothManagerbluetoothManager=(BluetoothManager)getSystemService(Context.BLUETOOTH_SERVICE); bluetoothAdapter=bluetoothManager.getAdapter(); if(bluetoothAdapter==null){ Toast.makeText(this,"当前设备不支持蓝牙",Toast.LENGTH_SHORT).show(); finish(); } initView(); registerDiscoveryReceiver(); startScan(); } @Override protectedvoidonDestroy(){ super.onDestroy(); handler.removeCallbacksAndMessages(null); unregisterReceiver(discoveryReceiver); if(bluetoothAdapter.isDiscovering()){ bluetoothAdapter.cancelDiscovery(); } } privatevoidinitView(){ ListViewlv_deviceList=(ListView)findViewById(R.id.lv_deviceList); deviceAdapter=newDeviceAdapter(this); lv_deviceList.setAdapter(deviceAdapter); } privatevoidregisterDiscoveryReceiver(){ IntentFilterintentFilter=newIntentFilter(); intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED); intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); intentFilter.addAction(BluetoothDevice.ACTION_FOUND); intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); registerReceiver(discoveryReceiver,intentFilter); } privatevoidstartScan(){ if(!bluetoothAdapter.isEnabled()){ if(bluetoothAdapter.enable()){ handler.postDelayed(newRunnable(){ @Override publicvoidrun(){ scanDevice(); } },1500); }else{ Toast.makeText(this,"请求蓝牙权限被拒绝,请授权",Toast.LENGTH_SHORT).show(); } }else{ scanDevice(); } } privatevoidscanDevice(){ if(bluetoothAdapter.isDiscovering()){ bluetoothAdapter.cancelDiscovery(); } bluetoothAdapter.startDiscovery(); } privatevoidshowLoadingDialog(Stringmessage){ if(loadingDialog==null){ loadingDialog=newLoadingDialog(this); } loadingDialog.show(message,true,false); } privatevoidhideLoadingDialog(){ if(loadingDialog!=null){ loadingDialog.dismiss(); } } }
此外,还可以通过利用反射来调用系统API,从而与支持蓝牙A2DP协议的蓝牙音响连接上,不过因为我只有一部不算严格意义上的蓝牙音响来做测试,所以这个功能并不确定是否适用于大多数蓝牙设备
/** *作者:叶应是叶 *时间:2017/9/820:02 *描述: */ publicclassConnectA2dpActivityextendsAppCompatActivity{ privateDeviceAdapterdeviceAdapter; privateBluetoothAdapterbluetoothAdapter; privateHandlerhandler=newHandler(); privateBluetoothA2dpbluetoothA2dp; privateLoadingDialogloadingDialog; privatefinalStringTAG="ConnectA2dpActivity"; privateBroadcastReceivera2dpReceiver=newBroadcastReceiver(){ @Override publicvoidonReceive(Contextcontext,Intentintent){ switch(intent.getAction()){ caseBluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED: intconnectState=intent.getIntExtra(BluetoothA2dp.EXTRA_STATE,BluetoothA2dp.STATE_DISCONNECTED); if(connectState==BluetoothA2dp.STATE_DISCONNECTED){ Toast.makeText(ConnectA2dpActivity.this,"已断开连接",Toast.LENGTH_SHORT).show(); }elseif(connectState==BluetoothA2dp.STATE_CONNECTED){ Toast.makeText(ConnectA2dpActivity.this,"已连接",Toast.LENGTH_SHORT).show(); } break; caseBluetoothA2dp.ACTION_PLAYING_STATE_CHANGED: intplayState=intent.getIntExtra(BluetoothA2dp.EXTRA_STATE,BluetoothA2dp.STATE_NOT_PLAYING); if(playState==BluetoothA2dp.STATE_PLAYING){ Toast.makeText(ConnectA2dpActivity.this,"处于播放状态",Toast.LENGTH_SHORT).show(); }elseif(playState==BluetoothA2dp.STATE_NOT_PLAYING){ Toast.makeText(ConnectA2dpActivity.this,"未在播放",Toast.LENGTH_SHORT).show(); } break; } } }; privateBroadcastReceiverdiscoveryReceiver=newBroadcastReceiver(){ @Override publicvoidonReceive(Contextcontext,Intentintent){ switch(intent.getAction()){ caseBluetoothAdapter.ACTION_DISCOVERY_STARTED: showLoadingDialog("正在搜索蓝牙设备,搜索时间大约一分钟"); break; caseBluetoothAdapter.ACTION_DISCOVERY_FINISHED: Toast.makeText(ConnectA2dpActivity.this,"搜索蓝牙设备结束",Toast.LENGTH_SHORT).show(); hideLoadingDialog(); break; caseBluetoothDevice.ACTION_FOUND: BluetoothDevicebluetoothDevice=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); deviceAdapter.addDevice(bluetoothDevice); deviceAdapter.notifyDataSetChanged(); break; caseBluetoothDevice.ACTION_BOND_STATE_CHANGED: intstatus=intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,BluetoothDevice.BOND_NONE); if(status==BluetoothDevice.BOND_BONDED){ Toast.makeText(ConnectA2dpActivity.this,"已连接",Toast.LENGTH_SHORT).show(); }elseif(status==BluetoothDevice.BOND_NONE){ Toast.makeText(ConnectA2dpActivity.this,"未连接",Toast.LENGTH_SHORT).show(); } hideLoadingDialog(); break; } } }; privateBluetoothProfile.ServiceListenerprofileServiceListener=newBluetoothProfile.ServiceListener(){ @Override publicvoidonServiceDisconnected(intprofile){ if(profile==BluetoothProfile.A2DP){ Toast.makeText(ConnectA2dpActivity.this,"onServiceDisconnected",Toast.LENGTH_SHORT).show(); bluetoothA2dp=null; } } @Override publicvoidonServiceConnected(intprofile,finalBluetoothProfileproxy){ if(profile==BluetoothProfile.A2DP){ Toast.makeText(ConnectA2dpActivity.this,"onServiceConnected",Toast.LENGTH_SHORT).show(); bluetoothA2dp=(BluetoothA2dp)proxy; } } }; privateAdapterView.OnItemClickListeneritemClickListener=newAdapterView.OnItemClickListener(){ @Override publicvoidonItemClick(AdapterView>parent,Viewview,intposition,longid){ BluetoothDevicedevice=deviceAdapter.getDevice(position); if(device.getBondState()==BluetoothDevice.BOND_BONDED){ Toast.makeText(ConnectA2dpActivity.this,"已连接该设备",Toast.LENGTH_SHORT).show(); return; } showLoadingDialog("正在连接"); connectA2dp(device); } }; @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.activity_connect_a2dp); BluetoothManagerbluetoothManager=(BluetoothManager)getSystemService(Context.BLUETOOTH_SERVICE); bluetoothAdapter=bluetoothManager.getAdapter(); if(bluetoothAdapter==null||!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)){ Toast.makeText(ConnectA2dpActivity.this,"当前设备不支持蓝牙",Toast.LENGTH_SHORT).show(); finish(); } bluetoothAdapter.getProfileProxy(this,profileServiceListener,BluetoothProfile.A2DP); initView(); registerDiscoveryReceiver(); registerA2dpReceiver(); startScan(); } @Override protectedvoidonDestroy(){ super.onDestroy(); handler.removeCallbacksAndMessages(null); unregisterReceiver(a2dpReceiver); unregisterReceiver(discoveryReceiver); if(bluetoothAdapter.isDiscovering()){ bluetoothAdapter.cancelDiscovery(); } } privatevoidinitView(){ ListViewlv_deviceList=(ListView)findViewById(R.id.lv_deviceList); deviceAdapter=newDeviceAdapter(this); lv_deviceList.setAdapter(deviceAdapter); lv_deviceList.setOnItemClickListener(itemClickListener); } privatevoidregisterDiscoveryReceiver(){ IntentFilterintentFilter=newIntentFilter(); intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED); intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); intentFilter.addAction(BluetoothDevice.ACTION_FOUND); intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); registerReceiver(discoveryReceiver,intentFilter); } privatevoidregisterA2dpReceiver(){ IntentFilterintentFilter=newIntentFilter(); intentFilter.addAction(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED); intentFilter.addAction(BluetoothA2dp.ACTION_PLAYING_STATE_CHANGED); registerReceiver(a2dpReceiver,intentFilter); } privatevoidstartScan(){ if(!bluetoothAdapter.isEnabled()){ if(bluetoothAdapter.enable()){ handler.postDelayed(newRunnable(){ @Override publicvoidrun(){ scanDevice(); } },1500); }else{ Toast.makeText(ConnectA2dpActivity.this,"请求蓝牙权限被拒绝",Toast.LENGTH_SHORT).show(); } }else{ scanDevice(); } } privatevoidscanDevice(){ if(bluetoothAdapter.isDiscovering()){ bluetoothAdapter.cancelDiscovery(); } bluetoothAdapter.startDiscovery(); } publicvoidsetPriority(BluetoothDevicedevice,intpriority){ try{ MethodconnectMethod=BluetoothA2dp.class.getMethod("setPriority",BluetoothDevice.class,int.class); connectMethod.invoke(bluetoothA2dp,device,priority); }catch(Exceptione){ e.printStackTrace(); } } privatevoidconnectA2dp(BluetoothDevicebluetoothDevice){ if(bluetoothA2dp==null||bluetoothDevice==null){ return; } setPriority(bluetoothDevice,100); try{ MethodconnectMethod=BluetoothA2dp.class.getMethod("connect",BluetoothDevice.class); connectMethod.invoke(bluetoothA2dp,bluetoothDevice); }catch(Exceptione){ e.printStackTrace(); } } privatevoidshowLoadingDialog(Stringmessage){ if(loadingDialog==null){ loadingDialog=newLoadingDialog(this); } loadingDialog.show(message,true,false); } privatevoidhideLoadingDialog(){ if(loadingDialog!=null){ loadingDialog.dismiss(); } } }
这里给出源代码供大家参考:BluetoothDemo
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持毛票票。