Fix crash

app/src/main/java/com/fongmi/android/tv/bean/Backup.java

@@ -6,6 +6,7 @@ import com.fongmi.android.tv.App;
 import com.fongmi.android.tv.db.AppDatabase;
 import com.google.gson.annotations.SerializedName;
 
+import java.util.Collections;
 import java.util.List;
 
 public class Backup {
@@ -50,7 +51,7 @@ public class Backup {
     }
 
     public List<Site> getSite() {
-        return site;
+        return site == null ? Collections.emptyList() : site;
     }
 
     public void setSite(List<Site> site) {
@@ -58,7 +59,7 @@ public class Backup {
     }
 
     public List<Live> getLive() {
-        return live;
+        return live == null ? Collections.emptyList() : live;
     }
 
     public void setLive(List<Live> live) {
@@ -66,7 +67,7 @@ public class Backup {
     }
 
     public List<Keep> getKeep() {
-        return keep;
+        return keep == null ? Collections.emptyList() : keep;
     }
 
     public void setKeep(List<Keep> keep) {
@@ -74,7 +75,7 @@ public class Backup {
     }
 
     public List<Config> getConfig() {
-        return config;
+        return config == null ? Collections.emptyList() : config;
     }
 
     public void setConfig(List<Config> config) {
@@ -82,7 +83,7 @@ public class Backup {
     }
 
     public List<History> getHistory() {
-        return history;
+        return history == null ? Collections.emptyList() : history;
     }
 
     public void setHistory(List<History> history) {

app/src/main/java/com/fongmi/android/tv/db/dao/BaseDao.java

@@ -32,9 +32,10 @@ public abstract class BaseDao<T> {
 
     @Transaction
     public void insertOrUpdate(List<T> items) {
+        if (items.isEmpty()) return;
         List<Long> result = insert(items);
         List<T> list = new ArrayList<>();
         for (int i = 0; i < result.size(); i++) if (result.get(i) == -1) list.add(items.get(i));
-        if (list.size() > 0) update(list);
+        if (!list.isEmpty()) update(list);
     }
 }