Android 蓝牙开发-白红宇

Android 蓝牙开发

阅读量：6640 次

发布时间：2019-06-25

本文共 3961 字，大约阅读时间需要 13 分钟。

今天给大家带来蓝牙开发的基础，主要展示的是程序搜到蓝牙会通过list展示出来，并实时排序，远近与信号强弱

首先我们要有次jar包

我们先推断手机是否能支持蓝牙功能

if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {   Toast.makeText(this, "蓝牙不支持", Toast.LENGTH_SHORT).show();}

然后我们看看蓝牙是否打开

if (!ylwlmanager.isBluetoothEnabled()) {   Toast.makeText(this, "蓝牙没有打开", Toast.LENGTH_SHORT).show();}

把list 适配器全初始化一下

private void UIinit() {

final YlwlManager ylwlmanager = YlwlManager.getInstance(mcontext);

newDevicesListView = (ListView) findViewById(R.id.

new_devices)

;

deviceAdapter =

new DeviceAdapter(

this,

deviceList)

;

newDevicesListView.setAdapter(

deviceAdapter)

;

 //把蓝牙接收打开  这里能够用个button控制  作者直接就打开了

ylwlmanager.scanLeDevice(true);   ylwlmanager.setYlwlManagerListener(lis);

}

蓝牙监听

YlwlManagerListener lis = new YlwlManagerListener() {   @Override   public void onUpdateBeacon(final ArrayList
     
       beacons) {      /**       * 传多个beacon过来 已经做好了排序 ， 距离 连接状态(BluetoothDeviceAndRssi isConn方法)       * 也随时改变       */      runOnUiThread(new Runnable() {         @Override         public void run() {            deviceList = beacons;            Collections.sort(deviceList);// 距离排序            deviceAdapter = new DeviceAdapter(DeviceListActivity.this, deviceList);            newDevicesListView.setAdapter(deviceAdapter);         }      });   }   @Override   public void onNewBeacon(BluetoothDeviceAndRssi beacon) {      /**       * 传单个beacon过来       */   }   @Override   public void onNewBeaconDataChang(BluetoothDeviceAndRssi beacon) {      /**       * 传单个beacon过来 并且是mac地址不变 距离变 连接状态变       */   }};

以下是适配器代码

public class DeviceAdapter   extends BaseAdapter {      Context context;      List
     
       devices;      LayoutInflater inflater;      public DeviceAdapter(Context context,            List
      
        devices) {         this.context = context;         inflater = LayoutInflater.from(context);         this.devices = devices;      }      @Override      public int getCount() {         return devices.size();      }      @Override      public Object getItem(int position) {         return devices.get(position);      }      @Override      public long getItemId(int position) {         return position;      }      @Override      public View getView(int position, View convertView, ViewGroup parent) {         ViewGroup vg = null;         if (convertView != null) {            vg = (ViewGroup) convertView;         } else {            vg = (ViewGroup) inflater                  .inflate(R.layout.device_item, null);         }         BluetoothDeviceAndRssi bluetoothdeviceandrssi = devices               .get(position);         TextView tvadd = ((TextView) vg.findViewById(R.id.address));         TextView tvname = ((TextView) vg.findViewById(R.id.name));         ImageView image_rssi = (ImageView) vg.findViewById(R.id.image_rssi);         byte rssival = (byte) bluetoothdeviceandrssi.getRssi();         if (rssival > (-60)) {            image_rssi.setImageResource(R.drawable.icon_rssi6);         } else if (rssival > (-75)) {            image_rssi.setImageResource(R.drawable.icon_rssi5);         } else if (rssival > (-90)) {            image_rssi.setImageResource(R.drawable.icon_rssi4);         } else if (rssival > (-100)) {            image_rssi.setImageResource(R.drawable.icon_rssi3);         } else if (rssival > (-110)) {            image_rssi.setImageResource(R.drawable.icon_rssi2);         } else {            image_rssi.setImageResource(R.drawable.icon_rssi1);         }         if (bluetoothdeviceandrssi.getBluetoothdevice().getName() == null) {            tvname.setText("Unknow Name");         } else {            tvname.setText(bluetoothdeviceandrssi.getBluetoothdevice()                  .getName());         }         tvadd.setText("mac地址"+ bluetoothdeviceandrssi.getBluetoothdevice().getAddress());         return vg;      }   }

图片是这个样子