蓝牙扫描设备

时间:2016-09-16 21:07:13

标签: android bluetooth bluetooth-lowenergy android-bluetooth

我的代码有问题:

private ScanCallback mLeScanCallback = new ScanCallback(){
    //Callback when a BLE advertisement has been found.
    @Override
    public void onScanResult(int callbackType, final android.bluetooth.le.ScanResult result) {
        super.onScanResult(callbackType, result);

       new Thread(){
           @Override
           public void run() {
               final BluetoothDevice device = result.getDevice();

               runOnUiThread(new Runnable() {
                   @Override
                   public void run() {
                       if (device != null){
                           mDevices.add(device);
                       }
                   }
               });
           }
       }.start();

    }

    //Callback when batch results are delivered.
    @Override
    public void onBatchScanResults(List<android.bluetooth.le.ScanResult> results) {
        super.onBatchScanResults(results);
    }

    //Callback when scan could not be started.
    @Override
    public void onScanFailed(int errorCode) {
        super.onScanFailed(errorCode);
    }

目前我正在使用此代码来获取扫描结果。这基于:https://github.com/RedBearLab/Android/blob/master/Examples/Chat/src/com/redbear/chat/Main.java#L138

基于的应用程序具有较低的API级别,而我的应用程序具有较高的API级别。所以我把它改成了startScan()方法。

老实说,我被困住了,因为当我运行应用程序时,我没有错误。我检查了mDevices数组是否为空,它是否为空。这意味着代码没有将设备添加到阵列中,或者我的应用程序没有专门找到任何设备。

非常感谢任何帮助。

激活扫描代码

private void scanDevice(){
    new Thread() {
        @Override
        public void run(){
            BTScanner.startScan(mLeScanCallback);

            try {
                Thread.sleep(SCAN_PERIOD);
            } catch (InterruptedException e){
                e.printStackTrace();
            }

            BTScanner.stopScan(mLeScanCallback);
        }


    }.start();
}

1 个答案:

答案 0 :(得分:0)

发现问题。它与ACCESS_COARSE_LOCATION或ACCESS_FINE_LOCATION的权限有关,以获取扫描结果。