修复退出闲玩时挂掉的bug

app/src/main/java/com/sheep/gamegroup/view/activity/ActXinwanWeb.java

@@ -109,9 +109,11 @@ public class ActXinwanWeb extends BaseActivity {
     @Override
     protected void onDestroy() {
         super.onDestroy();
-        mWebView.setVisibility(View.GONE);
-        mWebView.removeAllViews();
-        mWebView.destroy();
+        if(mWebView != null) {
+            mWebView.setVisibility(View.GONE);
+            mWebView.removeAllViews();
+            mWebView.destroy();
+        }
     }
 
     private void loadUrl() {