小编mic*_*ael的帖子

如问题标题所述,我有一个Eclipse Java EE Web应用程序项目.进入WebContent文件夹我有一些文件和子文件夹,其中有.DS_store OsX系统文件会导致一些问题,因为当我导出到war文件时它们总是包含在内.

我知道有一种方法可以排除文件或文件夹但只能进入src文件夹,而不能进入WebContent!

有任何想法吗？

问候

我创建了一个AsyncTask来检索具有20米精度的GPS位置.我想执行一个while循环,直到准确性可以加入.

问题是我请求更新职位时遇到异常.

java.lang.NullPointerException: Calling thread must be a prepared Looper thread.

这是一段错误的代码

@Override
protected String doInBackground(Void... params) {
if (ActivityCompat.checkSelfPermission(activity, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(activity, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                return null;
            }
            mLocationRequest.setInterval(100);
            mLocationRequest.setPriority(100);
            mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
            while (mLastLocation == null || (mLastLocation.getAccuracy()>Float.parseFloat("20.0") && mLastLocation.hasAccuracy())){
                try {
                    LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mLocationRequest,activity);
                    mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
                } catch (SecurityException secex) {

                }
            }

            return null;
        }