/** * Created by rbq on 2016/11/1. */import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.bluetooth.le.BluetoothLeScanner;import android.bluetooth.le.ScanCallback;import android.bluetooth.le.ScanResult;import android.content.Context;import android.os.Build;import android.os.Handler;import android.util.Log;import java.util.List;public class BleDevicesScanner implements Runnable {    private static final String TAG = BleDevicesScanner.class.getSimpleName();    private static final int DEFAULT_SCAN_PERIOD = 3000;// 2秒钟    private final BluetoothAdapter adapter;    private int scanPeriod = DEFAULT_SCAN_PERIOD;    private BleScanCallback callback;    private boolean Scaning = false;    private boolean isstart = false;    private Handler handler = new Handler();    private BluetoothLeScanner mScanner;    private ScanCallback mScanCallback;    private BluetoothAdapter.LeScanCallback mLeScanCallback;    public void setCallback(BleScanCallback callback) {        this.callback = callback;    }    private BleScaneStatusChanage scaneStatusChanage;    public BleScaneStatusChanage getScaneStatusChanage() {        return scaneStatusChanage;    }    public void setScaneStatusChanage(BleScaneStatusChanage scaneStatusChanage) {        this.scaneStatusChanage = scaneStatusChanage;    }    public BleDevicesScanner(Context context) {        adapter = BleUtils.getBluetoothAdapter(context);    }    public synchronized void setScanPeriod(int scanPeriod) {        this.scanPeriod = scanPeriod < 0 ? DEFAULT_SCAN_PERIOD : scanPeriod;    }    public boolean isScanning() {        return isstart;    }    public synchronized void start() {        if (isstart) {            return;        }        isstart = true;        handler.post(this);    }    public synchronized void stop() {        if (!isstart) {            return;        }        isstart = false;        handler.removeCallbacks(this);        if (Scaning) {            try {                if (isSupportLollipop()) {                    if (mScanner != null&&mScanCallback!=null) {                        mScanner.stopScan(mScanCallback);                    }                } else {                    if (adapter != null&&mLeScanCallback!=null) {                        adapter.stopLeScan(mLeScanCallback);                    }                }                if (scaneStatusChanage!=null){                    scaneStatusChanage.onScaneStop();                }            } catch (Exception e) {                Log.i(TAG,"蓝牙停止异常");            }finally {                Scaning = false;            }            Log.i(TAG, "停止扫描");        }    }    @Override    public void run() {        if (!adapter.isEnabled()){            return;        }        if (!Scaning) {            Log.i(TAG, "开始扫描");            if (isSupportLollipop()) {                if (mScanner==null) {                    mScanner = adapter.getBluetoothLeScanner();                }                if (mScanner == null) {                    Scaning = false;                } else {                    if (mScanCallback==null){                        mScanCallback = new ScanCallback() {                            @Override                            public void onScanResult(int callbackType, ScanResult result) {                                super.onScanResult(callbackType, result);                                if (isSupportLollipop()) {                                    byte[] scanRecord = null;                                    if (result.getScanRecord() != null) {                                        scanRecord = result.getScanRecord().getBytes();                                    }                                    if (callback != null) {                                        callback.onScan(result.getDevice(), result.getRssi(), scanRecord);                                    }                                }                            }                            @Override                            public void onScanFailed(int errorCode) {                                super.onScanFailed(errorCode);                                Log.i(TAG,"扫描失败");                            }                            @Override                            public void onBatchScanResults(List
     
       results) {                                super.onBatchScanResults(results);                            }                        };                    }                    mScanner.startScan(mScanCallback);                    Scaning = true;                }            } else {                if (mLeScanCallback==null){                    mLeScanCallback = new BluetoothAdapter.LeScanCallback(){                        @Override                        public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord) {                            if (callback!=null){                                callback.onScan(device,rssi,scanRecord);                            }                        }                    };                }                Scaning = adapter.startLeScan(mLeScanCallback);            }            if (scaneStatusChanage!=null){                scaneStatusChanage.onScaneStart();            }        } else if (Scaning) {            Log.i(TAG, "停止扫描");            synchronized (this) {                if (!Scaning)                    return;            }            try {                if (isSupportLollipop()) {                    if (mScanner != null&&mScanCallback!=null) {                        mScanner.stopScan(mScanCallback);                    }                } else {                    if (adapter != null&&mLeScanCallback!=null) {                        adapter.stopLeScan(mLeScanCallback);                    }                }            } catch (Exception e) {                Log.i(TAG,"蓝牙停止异常");            }            Scaning = false;            if (scaneStatusChanage!=null){                scaneStatusChanage.onScaneStop();            }        }        handler.postDelayed(this, scanPeriod);    }    public boolean isSupportLollipop() {        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;    }}