fix:share large image on Android

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

@@ -15,6 +15,7 @@
  */
 package com.jarvan.fluwx.handler
 
+import android.util.Log
 import com.jarvan.fluwx.constant.CallResult
 import com.jarvan.fluwx.constant.WeChatPluginMethods
 import com.jarvan.fluwx.constant.WechatPluginKeys
@@ -25,6 +26,7 @@ import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.PluginRegistry
 import kotlinx.coroutines.*
+import java.io.ByteArrayInputStream
 
 
 /***
@@ -170,11 +172,31 @@ internal class FluwxShareHandler {
             val byteArray: ByteArray? = if (imagePath.isNullOrBlank()) {
                 byteArrayOf()
             } else {
-                getImageByteArrayCommon(registrar, imagePath!!)
+                getImageByteArrayCommon(registrar, imagePath)
             }
 
+
+
+
             val imgObj = if (byteArray != null && byteArray.isNotEmpty()) {
+
+                if (byteArray.size > 512 * 1024){
+                    val input = ByteArrayInputStream(byteArray)
+
+                    val suffix  = when {
+                        imagePath.isNullOrBlank() -> ".jpeg"
+                        imagePath.lastIndexOf(".") == -1 -> ".jpeg"
+                        else -> imagePath.substring(imagePath.lastIndexOf("."))
+                    }
+
+                    val file = ShareImageUtil.inputStreamToFile(input,suffix,registrar!!.context())
+                    WXImageObject().apply {
+                        setImagePath(file.absolutePath)
+                    }
+                }else{
                     WXImageObject(byteArray)
+                }
+
             } else {
                 null
             }

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

@@ -15,19 +15,24 @@
  */
 package com.jarvan.fluwx.utils;
 
+import android.content.ContentResolver;
 import android.content.Context;
 import android.content.res.AssetFileDescriptor;
+import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.net.Uri;
 import android.os.Build;
+import android.provider.MediaStore;
 import android.text.TextUtils;
 import android.util.Log;
 
 import com.jarvan.fluwx.constant.WeChatPluginImageSchema;
 import com.jarvan.fluwx.constant.WechatPluginKeys;
 
+import java.io.ByteArrayInputStream;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -50,7 +55,7 @@ public class ShareImageUtil {
     public static byte[] getImageData(PluginRegistry.Registrar registrar, String path) {
         byte[] result = null;
         if (path.startsWith(WeChatPluginImageSchema.SCHEMA_ASSETS)) {
-            String key = path.substring(WeChatPluginImageSchema.SCHEMA_ASSETS.length(), path.length());
+            String key = path.substring(WeChatPluginImageSchema.SCHEMA_ASSETS.length());
             AssetFileDescriptor fileDescriptor = AssetManagerUtil.openAsset(registrar, key, getPackage(key));
             try {
                 InputStream inputStream = fileDescriptor.createInputStream();
@@ -118,14 +123,23 @@ public class ShareImageUtil {
         return packageStr;
     }
 
-    private static File inputStreamToTmpFile(InputStream inputStream, String suffix) {
+    public static File inputStreamToFile(InputStream inputStream, String suffix, Context context) {
+
         File file = null;
 
         BufferedSink sink = null;
         Source source = null;
         OutputStream outputStream = null;
         try {
-            file = File.createTempFile(UUID.randomUUID().toString(), suffix);
+
+            File externalFile = context.getExternalCacheDir();
+            if (externalFile == null) {
+                return  null;
+            }
+            file  =  new File(externalFile.getAbsolutePath()+File.separator+UUID.randomUUID().toString()+suffix);
+
+
+//            file = File.createTempFile(UUID.randomUUID().toString(), suffix);
             outputStream = new FileOutputStream(file);
             sink = Okio.buffer(Okio.sink(outputStream));
             source = Okio.source(inputStream);
@@ -162,6 +176,9 @@ public class ShareImageUtil {
         return file;
     }
 
+
+
+
     private static InputStream openStream(String url) {
         if(!url.startsWith("https") && !url.startsWith("http")){
             url = "http://"+url;

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

@@ -224,6 +224,11 @@ public class WeChatThumbnailUtil {
     }
 
     private static File downloadImage(String url) {
+
+        if(!url.startsWith("https") && !url.startsWith("http")){
+            url = "http://"+url;
+        }
+
         File result = null;
         OkHttpClient okHttpClient = new OkHttpClient.Builder().build();
         Request request = new Request.Builder().url(url).get().build();

example/lib/share_image_page.dart

@@ -9,8 +9,9 @@ class ShareImagePage extends StatefulWidget {
 class _ShareImagePageState extends State<ShareImagePage> {
   fluwx.WeChatScene scene = fluwx.WeChatScene.SESSION;
   String _imagePath =
+//  "http://img-download.pchome.net/download/1k1/3a/3e/ofskcd-s1a.jpg"
       "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1534614311230&di=b17a892b366b5d002f52abcce7c4eea0&imgtype=0&src=http%3A%2F%2Fimg.mp.sohu.com%2Fupload%2F20170516%2F51296b2673704ae2992d0a28c244274c_th.png";
-  String _thumbnail = "assets://logo.png";
+  String _thumbnail = "assets://images/logo.png";
 
   String _response = "";
 
@@ -54,7 +55,7 @@ class _ShareImagePageState extends State<ShareImagePage> {
             ),
             TextField(
               decoration: InputDecoration(labelText: "缩略地址"),
-              controller: TextEditingController(text: "assets://logo.png"),
+              controller: TextEditingController(text: "assets://images/logo.png"),
               onChanged: (value) {
                 _thumbnail = value;
               },