这些是promise，你是否使用它们：

  $ cordovaFile.checkDir（cordova.file。 dataDirectory，inbounds）
 .then（function（success）{
 // success 
 alert（status+ success）; 


 }，function（error）{
 // error 
}）;您是否已经配置了config.xml了吗？ 
$ p> 
 < preference name =iosExtraFilesystemsvalue =library，library-nosync，documents，documents-nosync，cache，bundle，root/> 
< preference name =AndroidExtraFilesystemsvalue =files，external，documents，sdcard，cache，cache-external，root/> 
 
 

I am trying to work with the ngCordova File plugin as documented here: http://ngcordova.com/docs/plugins/file/, but am getting strange behaviour.

I am trying to create a folder if it does not already exist. I am testing for its existence using:

$cordovaFile.checkDir(cordova.file.dataDirectory, 'inbound')

Now this returns NOT_FOUND_ERR so i try to create the folder subsequently by calling:

$cordovaFile.createDir(cordova.file.dataDirectory, 'inbound', false);

But this then returns PATH_EXISTS_ERR

Why would checkDir tell me it does not exist, but then createDir tell me it DOES exist?

NOTE: This is using an Android device.

Those are promises, are you using them like that :
$cordovaFile.checkDir(cordova.file.dataDirectory, "inbounds")
      .then(function (success) {
        // success
        alert("status " + success);


      }, function (error) {
        // error
      });

Have you configured your config.xml too ?
<preference name="iosExtraFilesystems" value="library,library-nosync,documents,documents-nosync,cache,bundle,root" />
<preference name="AndroidExtraFilesystems" value="files,files-external,documents,sdcard,cache,cache-external,root" />