2024年10月安卓蓝牙开发(Android开发 蓝牙连接问题)
⑴安卓蓝牙开发(Android开发蓝牙连接问题
⑵Android开发蓝牙连接问题
⑶Android蓝牙编程的基本步骤:.获取蓝牙适配器BluetoothAdapterblueadapter=BluetoothAdapter.getDefaultAdapter();如果BluetoothAdapter为null,说明android手机没有蓝牙模块。判断蓝牙模块是否开启,blueadapter.isEnabled()true表示已经开启,false表示蓝牙并没启用。.启动配置蓝牙可见模式,即进入可配对模式Intentin=newIntent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);in.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,);startActivity(in);,就表示秒。.获取蓝牙适配器中已经配对的设备Set《BluetoothDevice》device=blueadapter.getBondedDevices();.还需要在androidManifest.xml中声明蓝牙的权限《uses-permissionandroid:name=“android.permission.BLUETOOTH“/》《uses-permissionandroid:name=“android.permission.BLUETOOTH_ADMIN“/》接下来就是根据自己的需求对BluetoothAdapter的操作了。
⑷android蓝牙开发问题
⑸publicbooleansetName(Stringname)SetthefriendlyBluetoothnameofthelocalBluetothadapter.ThisnameisvisibletoremoteBluetoothdevices.ValidBluetoothnamesareamaximumofUTF-characters,howevermanyremotedevicescanonlydisplaythefirstcharacters,andsomemaybelimitedtojust.文档中不是有说明吗!最大有效值是用utf-编码的个字符,然而有些蓝牙设备最多能显示个字符,....char。
⑹Android蓝牙开发-打开蓝牙后能不能立即连接固定地址的蓝牙设备还是需要进行判断什么的
⑺要看是和什么设备进行连接了。
⑻Android蓝牙开发代码怎么写
⑼开启蓝牙设备和设置可见时间:
⑽private?void?search()?{????????BluetoothAdapter?adapter?=?BluetoothAdapter.getDefaultAdapter();????????if?(!adapter.isEnabled())?{????????????adapter.enable();????????}????????Intent?enable?=?new?Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);????????enable.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,?);?//为蓝牙设备可见时间????????startActivity(enable);????????Intent?searchIntent?=?new?Intent(this,?minuteActivity.class);????????startActivity(searchIntent);????}
⑾首先,需要获得一个BluetoothAdapter,可以通过getDefaultAdapter()获得系统默认的蓝牙适配器,当然我们也可以自己指定,但这个真心没有必要,至少我是不需要的。然后我们检查手机的蓝牙是否打开,如果没有,通过enable()方法打开。接着我们再设置手机蓝牙设备的可见,可见时间可以自定义。
⑿android蓝牙开发,PC端模拟串口接收字符,该如何编程
⒀您好,android蓝牙这方面还是很好搞的,因为大家的方式都是差不多的。先说说如何开启蓝牙设备和设置可见时间:privatevoidsearch(){BluetoothAdapteradapter=BluetoothAdapter.getDefaultAdapter();if(!adapter.isEnabled()){adapter.enable();}Intentenable=newIntent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);enable.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,);//为蓝牙设备可见时间startActivity(enable);IntentsearchIntent=newIntent(this,minuteActivity.class);startActivity(searchIntent);}首先,需要获得一个BluetoothAdapter,可以通过getDefaultAdapter()获得系统默认的蓝牙适配器,当然我们也可以自己指定,但这个真心没有必要,至少我是不需要的。然后我们检查手机的蓝牙是否打开,如果没有,通过enable()方法打开。接着我们再设置手机蓝牙设备的可见,可见时间可以自定义。完成这些必要的设置后,我们就可以正式开始与蓝牙模块进行通信了:publilassminuteActivityextendsActivity{privateBluetoothReceiverreceiver;privateBluetoothAdapterbluetoothAdapter;privateList《String》devices;privateList《BluetoothDevice》deviceList;privateBluetoothclient;privatefinalStringlockName=“BOLUTEK“;privateStringmessage=““;privateListViewlistView;OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.search_layout);listView=(ListView)this.findViewById(R.id.list);deviceList=newArrayList《BluetoothDevice》();devices=newArrayList《String》();bluetoothAdapter=BluetoothAdapter.getDefaultAdapter();bluetoothAdapter.startDiscovery();IntentFilterfilter=newIntentFilter(BluetoothDevice.ACTION_FOUND);receiver=newBluetoothReceiver();registerReceiver(receiver,filter);listView.setOnItemClickListener(newAdapterView.OnItemClickListener(){OverridepublicvoidonItemClick(AdapterView《?》parent,Viewview,intposition,longid){setContentView(R.layout.connect_layout);BluetoothDevicedevice=deviceList.get(position);client=newBluetooth(device,handler);try{client.connect(message);}catch(Exceptione){Log.e(“TAG“,e.toString());}}});}OverrideprotectedvoidonDestroy(){unregisterReceiver(receiver);super.onDestroy();}privatefinalHandlerhandler=newHandler(){OverridepublicvoidhandleMessage(Messagemsg){switch(msg.what){caseBluetooth.CONNECT_FAILED:Toast.makeText(minuteActivity.this,“连接失败“,Toast.LENGTH_LONG).show();try{client.connect(message);}catch(Exceptione){Log.e(“TAG“,e.toString());}break;caseBluetooth.CONNECT_SUESS:Toast.makeText(minuteActivity.this,“连接成功“,Toast.LENGTH_LONG).show();break;caseBluetooth.READ_FAILED:Toast.makeText(minuteActivity.this,“读取失败“,Toast.LENGTH_LONG).show();break;caseBluetooth.WRITE_FAILED:Toast.makeText(minuteActivity.this,“写入失败“,Toast.LENGTH_LONG).show();break;caseBluetooth.DATA:Toast.makeText(minuteActivity.this,msg.arg+““,Toast.LENGTH_LONG).show();break;}}};privateclassBluetoothReceiverextendsBroadcastReceiver{OverridepublicvoidonReceive(Contextcontext,Intentintent){Stringaction=intent.getAction();if(BluetoothDevice.ACTION_FOUND.equals(action)){BluetoothDevicedevice=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);if(isLock(device)){devices.add(device.getName());}deviceList.add(device);}showDevices();}}privatebooleanisLock(BluetoothDevicedevice){booleanisLockName=(device.getName()).equals(lockName);booleanisSingleDevice=devices.indexOf(device.getName())==-;returnisLockName&&isSingleDevice;}privatevoidshowDevices(){ArrayAdapter《String》adapter=newArrayAdapter《String》(this,android.R.layout.simple_list_item_,devices);listView.setAdapter(adapter);}}
⒁如何实现Android蓝牙开发自动配对连接,并不弹出提示框
⒂android蓝牙自动配对连接的具体代码如下:.获取蓝牙适配器BluetoothAdapterblueadapter=BluetoothAdapter.getDefaultAdapter();如果BluetoothAdapter为null,说明android手机没有蓝牙模块。.判断蓝牙模块是否开启,blueadapter.isEnabled()true表示已经开启,false表示蓝牙并没启用。.启动配置蓝牙可见模式,即进入可配对模式Intentin=newIntent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);in.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,);startActivity(in);,就表示秒。.获取蓝牙适配器中已经配对的设备Set《BluetoothDevice》device=blueadapter.getBondedDevices();当然,还需要在androidManifest.xml中声明蓝牙的权限《uses-permissionandroid:name=“android.permission.BLUETOOTH“/》《uses-permissionandroid:name=“android.permission.BLUETOOTH_ADMIN“/》.自动配对设置Pin值staticpublicbooleanautoBond(ClassbtClass,BluetoothDevicedevice,StringstrPin)throwsException{MethodautoBondMethod=btClass.getMethod(“setPin“,newClass{byte.class});Booleanresult=(Boolean)autoBondMethod.invoke(device,newObject{strPin.getBytes()});returnresult;}.开始配对请求staticpublicbooleancreateBond(ClassbtClass,BluetoothDevicedevice)throwsException{MethodcreateBondMethod=btClass.getMethod(“createBond“);BooleanreturnValue=(Boolean)createBondMethod.invoke(device);returnreturnValue.booleanValue();}
⒃如何实现android蓝牙开发自动配对连接,并不弹出提示框
⒄android蓝牙自动配对连接的具体代码如下:.获取蓝牙适配器BluetoothAdapterblueadapter=BluetoothAdapter.getDefaultAdapter();如果BluetoothAdapter为null,说明android手机没有蓝牙模块。.判断蓝牙模块是否开启,blueadapter.isEnabled()true表示已经开启,false表示蓝牙并没启用。.启动配置蓝牙可见模式,即进入可配对模式Intentin=newIntent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);in.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,);startActivity(in);,就表示秒。.获取蓝牙适配器中已经配对的设备Set《BluetoothDevice》device=blueadapter.getBondedDevices();当然,还需要在androidManifest.xml中声明蓝牙的权限《uses-permissionandroid:name=“android.permission.BLUETOOTH“/》《uses-permissionandroid:name=“android.permission.BLUETOOTH_ADMIN“/》.自动配对设置Pin值staticpublicbooleanautoBond(ClassbtClass,BluetoothDevicedevice,StringstrPin)throwsException{MethodautoBondMethod=btClass.getMethod(“setPin“,newClass{byte.class}