Fix bug

app/src/main/java/com/fongmi/android/tv/ui/adapter/BaseDiffAdapter.java

@@ -69,7 +69,11 @@ public abstract class BaseDiffAdapter<T extends Diffable<T>, VH extends Recycler
     }
 
     public void clear() {
-        setItems(new ArrayList<>());
+        clear(null);
+    }
+
+    public void clear(Runnable runnable) {
+        setItems(new ArrayList<>(), runnable);
     }
 
     @Override

app/src/mobile/java/com/fongmi/android/tv/ui/adapter/DeviceAdapter.java

@@ -28,12 +28,6 @@ public class DeviceAdapter extends BaseDiffAdapter<Device, DeviceAdapter.ViewHol
         boolean onLongClick(Device item);
     }
 
-    @Override
-    public void clear() {
-        super.clear();
-        Device.delete();
-    }
-
     public List<String> getIps() {
         List<String> ips = new ArrayList<>();
         for (Device item : getItems()) if (item.isApp()) ips.add(item.getIp());

app/src/mobile/java/com/fongmi/android/tv/ui/dialog/CastDialog.java

@@ -143,10 +143,12 @@ public class CastDialog extends BaseDialog implements DeviceAdapter.OnClickListe
     }
 
     private void onRefresh() {
-        adapter.clear();
-        DLNADevice.get().disconnect();
-        DLNACastManager.INSTANCE.search(null);
-        if (fm) scanTask.start(adapter.getIps());
+        adapter.clear(() -> {
+            Device.delete();
+            DLNADevice.get().disconnect();
+            DLNACastManager.INSTANCE.search(null);
+            if (fm) scanTask.start(adapter.getIps());
+        });
     }
 
     private void onCasted() {

app/src/mobile/java/com/fongmi/android/tv/ui/dialog/SyncDialog.java

@@ -141,8 +141,10 @@ public class SyncDialog extends BaseDialog implements DeviceAdapter.OnClickListe
     }
 
     private void onRefresh() {
-        adapter.clear();
-        scanTask.start(adapter.getIps());
+        adapter.clear(() -> {
+            Device.delete();
+            scanTask.start(adapter.getIps());
+        });
     }
 
     private void onSuccess() {