小编Lav*_*mar的帖子

Follwing是我的示例项目中的代码片段.但它在我的实际项目中不起作用.

 await CrossMedia.Current.Initialize();
 if (!CrossMedia.Current.IsCameraAvailable||!CrossMedia.Current.IsTakePhotoSupported)
 {
   await DisplayAlert("No Camera", ":( No camera available.", "OK");
   return;
  }
 var filePath = await CrossMedia.Current.TakePhotoAsync(newPlugin.Media.Abstractions.StoreCameraMediaOptions
  {
     SaveToAlbum = true
  });

例外:

java.lang.NullPointerException: Attempt to invoke virtual method
'android.content.res.XmlResourceParser
android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager,
java.lang.String)' on a null object reference
    at android.support.v4.content.FileProvider.parsePathStrategy(FileProvider.java:560)
    at android.support.v4.content.FileProvider.getPathStrategy(FileProvider.java:534)
    at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:376)
    at md5a3e164e78ade0c22cefea770ddd0bc49.MediaPickerActivity.n_onCreate(NativeMethod)     at md5a3e164e78ade0c22cefea770ddd0bc49.MediaPickerActivity.onCreate(MediaPickerActvity.java:42)
    at android.app.Activity.performCreate(Activity.java:6092)