[fix]修复打包混淆导致分享失败的问题

android/app/proguard-rules.pro

@@ -112,6 +112,11 @@
 -keep public class com.netease.nis.sdkwrapper.Utils {
 public <methods>;
 }
+
+#
+-keep class androidx.core.content.FileProvider { *; }
+-keep class android.support.v4.content.FileProvider { *; }
+
 #oaid miitmdid end
 
 #flutter start