Fix Thumbnail

android/src/main/kotlin/com/jarvan/fluwx/handler/FluwxShareHandler.kt

@@ -15,11 +15,13 @@
  */
 package com.jarvan.fluwx.handler
 
-import android.util.Log
+import android.graphics.BitmapFactory
 import com.jarvan.fluwx.constant.CallResult
 import com.jarvan.fluwx.constant.WeChatPluginMethods
 import com.jarvan.fluwx.constant.WechatPluginKeys
 import com.jarvan.fluwx.utils.ShareImageUtil
+import com.jarvan.fluwx.utils.ThumbnailCompressUtil
+import com.jarvan.fluwx.utils.Util
 import com.jarvan.fluwx.utils.WeChatThumbnailUtil
 import com.tencent.mm.opensdk.modelmsg.*
 import io.flutter.plugin.common.MethodCall
@@ -164,13 +166,25 @@ internal class FluwxShareHandler {
         }.await()
     }
 
+    private suspend fun getThumbnailByteArray(imageData: ByteArray): ByteArray {
+        return GlobalScope.async(Dispatchers.Default, CoroutineStart.DEFAULT) {
+            val bitmap = BitmapFactory.decodeByteArray(imageData,0,imageData.size)
+            val bmp = ThumbnailCompressUtil.createScaledBitmapWithRatio(bitmap,WeChatThumbnailUtil.SHARE_IMAGE_THUMB_LENGTH,false)
+            if (bmp == null) {
+                byteArrayOf()
+            } else {
+                Util.bmpToByteArray(bmp, true)
+            }
+        }.await()
+    }
+
     private fun shareImage(call: MethodCall, result: MethodChannel.Result) {
         val imagePath = call.argument<String>(WechatPluginKeys.IMAGE)
-
+        val imageData: ByteArray? = call.argument(WechatPluginKeys.IMAGE_DATA)
 
         GlobalScope.launch(Dispatchers.Main, CoroutineStart.DEFAULT) {
             val byteArray: ByteArray? = if (imagePath.isNullOrBlank()) {
-                call.argument(WechatPluginKeys.IMAGE_DATA) ?: byteArrayOf()
+                imageData ?: byteArrayOf()
             } else {
                 getImageByteArrayCommon(registrar, imagePath)
             }
@@ -208,11 +222,15 @@ internal class FluwxShareHandler {
 
             var thumbnail: String? = call.argument(WechatPluginKeys.THUMBNAIL)
 
-            if (thumbnail.isNullOrBlank()) {
-                thumbnail = imagePath
+            val thumbnailData = if (thumbnail.isNullOrBlank() && imageData != null) {
+                getThumbnailByteArray(imageData)
+            } else {
+                if (thumbnail.isNullOrBlank()) {
+                    thumbnail = imagePath
+                }
+                getThumbnailByteArrayCommon(registrar, thumbnail!!)
             }
 
-            val thumbnailData = getThumbnailByteArrayCommon(registrar, thumbnail!!)
 
 //           val thumbnailData =  Util.bmpToByteArray(bitmap,true)
             handleShareImage(imgObj, call, thumbnailData, result)

android/src/main/kotlin/com/jarvan/fluwx/utils/WeChatThumbnailUtil.java

@@ -84,7 +84,9 @@ public class WeChatThumbnailUtil {
 
     public static byte[] thumbnailForCommon(String thumbnail, PluginRegistry.Registrar registrar) {
         File file;
-        if (thumbnail.startsWith(WeChatPluginImageSchema.SCHEMA_ASSETS)) {
+        if(thumbnail == null || thumbnail.isEmpty()) {
+            return null;
+        } else if (thumbnail.startsWith(WeChatPluginImageSchema.SCHEMA_ASSETS)) {
             file = getAssetFile(thumbnail, registrar);
         } else if (thumbnail.startsWith(WeChatPluginImageSchema.SCHEMA_FILE)) {
             String pathWithoutUri = thumbnail.substring(WeChatPluginImageSchema.SCHEMA_FILE.length());