储存权限删除

app/src/main/java/com/test/easy/easycleanerjunk/helps/MediaStoreUtils.java

@@ -51,7 +51,7 @@ public class MediaStoreUtils {
                     String path = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DATA));
                     long size = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.SIZE));
                     long createTime = cursor.getLong(cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DATE_ADDED)); // 获取文件创建时间
-                    Log.d("glc","size: "+size);
+                    Log.d("glc", "size: " + size);
                     fileList.add(new FileBean(name, path, size, false, getFileExtension(name), createTime, false));
                 }
                 cursor.close();
@@ -82,11 +82,14 @@ public class MediaStoreUtils {
     }
 
     private static String getFileExtension(String fileName) {
-        String extension = "";
+        String extension = "unknown";
         int i = fileName.lastIndexOf('.');
         if (i > 0 && i < fileName.length() - 1) {
+            int s = i + 1;
+            if (s < fileName.length()) {
                 extension = fileName.substring(i + 1);
             }
+        }
         return extension;
     }