leanback refresh

app/src/leanback/java/com/fongmi/android/tv/ui/activity/HomeActivity.java

@@ -53,6 +53,7 @@ import com.fongmi.android.tv.ui.presenter.ProgressPresenter;
 import com.fongmi.android.tv.ui.presenter.VodPresenter;
 import com.fongmi.android.tv.utils.Clock;
 import com.fongmi.android.tv.utils.FileChooser;
+import com.fongmi.android.tv.utils.FileUtil;
 import com.fongmi.android.tv.utils.KeyUtil;
 import com.fongmi.android.tv.utils.Notify;
 import com.fongmi.android.tv.utils.ResUtil;
@@ -364,6 +365,7 @@ public class HomeActivity extends BaseActivity implements CustomTitleView.Listen
 
     @Override
     public void onRefresh() {
+        FileUtil.clearCache(null);
         initConfig();
     }
 

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

@@ -49,7 +49,7 @@ public class FileUtil {
     public static void clearCache(Callback callback) {
         App.execute(() -> {
             Path.clear(Path.cache());
-            App.post(callback::success);
+            if (callback != null) App.post(callback::success);
         });
     }
 

catvod/src/main/java/com/github/catvod/utils/Util.java

@@ -61,6 +61,7 @@ public class Util {
 
     public static String md5(File file) {
         try {
+            if (!file.exists()) return "";
             MessageDigest digest = MessageDigest.getInstance("MD5");
             FileInputStream fis = new FileInputStream(file);
             byte[] byteArray = new byte[1024];