问为墙纸拾取图像

EN

FileFilter filterForImageFolders = new FileFilter()
    {           
        public boolean accept(File folder)
        {
            try
            {
                //Checking only directories, since we are checking for files within
                //a directory
                if(folder.isDirectory())
                {
                    File[] listOfFiles = folder.listFiles();

                    if (listOfFiles == null) return false;

                    //For each file in the directory...
                    for (File file : listOfFiles)
                    {                           
                        //Check if the extension is one of the supported filetypes                          
                        for (String ext : imageExtensions)
                        {
                            if (file.getName().endsWith("." + ext)) return true;
                        }
                    }                       
                }
                return false;
            }
            catch (SecurityException e)
            {
                Log.v("debug", "Access Denied");
                return false;
            }
        }
    };