Adjust jpa usage to 10%

app/src/main/java/com/fongmi/android/tv/player/extractor/JianPian.java

@@ -36,9 +36,9 @@ public class JianPian implements Source.Extractor {
 
     private void check() {
         double cache = FileUtil.getDirectorySize(Path.jpa());
-        double avail = FileUtil.getAvailableStorageSpace(Path.jpa());
-        int usage = (int) (cache / avail * 100);
-        if (usage > 30) Path.clear(Path.jpa());
+        double total = cache + FileUtil.getAvailableStorageSpace(Path.jpa());
+        int percent = (int) (cache / total * 100);
+        if (percent > 10) Path.clear(Path.jpa());
     }
 
     private void start(String url) {

app/src/main/java/com/fongmi/android/tv/utils/FileUtil.java

@@ -100,7 +100,7 @@ public class FileUtil {
         return TextUtils.isEmpty(mimeType) ? "*/*" : mimeType;
     }
 
-    private static String byteCountToDisplaySize(long size) {
+    public static String byteCountToDisplaySize(long size) {
         if (size <= 0) return "0 KB";
         String[] units = new String[]{"bytes", "KB", "MB", "GB", "TB"};
         int digitGroups = (int) (Math.log10(size) / Math.log10(1024));