android studio 中蓝牙BLE设备搜索

同样的代码在eclipse下能执行LeScanCallback的onLeScan方法 而到了android studio 中就不执行了 权限都加了,是不是android studio中还有配置别的东西?
public class Blues {
Context con;
Blues.M_LeScanCallback_interface callback_interface;
private BluetoothAdapter mBluetoothAdapter;
private LeScanCallback mLeScanCallback = new LeScanCallback() {
public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord) {
Blues.this.callback_interface.get_address(device.getAddress());
}
};

public Blues(Context con, Blues.M_LeScanCallback_interface callback_interface) {
    //在eclipse中 就加执行到这里   在android studio中就不会
    BluetoothManager bluetoothManager = (BluetoothManager)con.getSystemService("bluetooth");
    this.mBluetoothAdapter = bluetoothManager.getAdapter();
    this.con = con;
    this.callback_interface = callback_interface;
}

public void scanLeDevice(boolean enable) {
    if(enable) {
        this.mBluetoothAdapter.startLeScan(this.mLeScanCallback);
    } else {
        this.mBluetoothAdapter.stopLeScan(this.mLeScanCallback);
    }

}

public interface M_LeScanCallback_interface {
    void get_address(String var1);
}

}

//下面是activity中的调用
public class MainActivity extends Activity implements Blues.M_LeScanCallback_interface {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}


@Override
protected void onResume() {
    super.onResume();
    Blues blues = new Blues(this, this);
    blues.scanLeDevice(true);
}

@Override
public void get_address(String str) {
    Toast.makeText(getApplicationContext(), "" + str, Toast.LENGTH_SHORT).show();
}

}

1，查看有没有错误log，
2，查看api版本是否一致；
3，android6.0蓝牙需要Manifest.permission.ACCESS_COARSE_LOCATION定位权限。
么有具体信息，只能猜测了

最后在这里找到了答案http://blog.csdn.net/zrf1335348191/article/details/53487222