diff --git a/android/src/main/java/com/zzy/umshare/UMShareModule.java b/android/src/main/java/com/zzy/umshare/UMShareModule.java
index bb3f39f..d5a7ddf 100644
--- a/android/src/main/java/com/zzy/umshare/UMShareModule.java
+++ b/android/src/main/java/com/zzy/umshare/UMShareModule.java
@@ -234,7 +234,7 @@ public void initShare(String appkey, ReadableMap sharePlatforms, boolean debug)
         UMShareAPI.get(mContext).setShareConfig(config);
 
         ReadableMapKeySetIterator readableMapKeySetIterator = sharePlatforms.keySetIterator();
-        String[] keys = new String[3];
+        String[] keys = new String[sharePlatforms.toHashMap().size()];
         int i = 0;
         while (readableMapKeySetIterator.hasNextKey()) {
             String key = readableMapKeySetIterator.nextKey();