增加android刷新图库处理

Author: CarGuo

android/app/src/main/kotlin/com/shuyu/gsygithub/gsygithubappflutter/MainActivity.kt

@@ -9,5 +9,6 @@ class MainActivity(): FlutterActivity() {
   override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
     GeneratedPluginRegistrant.registerWith(this)
+    UpdateAlbumPlugin.register(this, flutterView)
   }
 }

android/app/src/main/kotlin/com/shuyu/gsygithub/gsygithubappflutter/UpdateAlbumPlugin.kt

@@ -0,0 +1,36 @@
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.provider.MediaStore
+import io.flutter.plugin.common.BinaryMessenger
+import io.flutter.plugin.common.MethodChannel
+
+object UpdateAlbumPlugin {
+
+    /** Channel名称  **/
+    private const val ChannelName = "com.shuyu.gsygithub.gsygithubflutter/UpdateAlbumPlugin"
+
+    /**
+     * 注册Toast插件
+     * @param context 上下文对象
+     * @param messenger 数据信息交流对象
+     */
+    @JvmStatic
+    fun register(context: Context, messenger: BinaryMessenger) = MethodChannel(messenger, ChannelName).setMethodCallHandler { methodCall, result ->
+        when (methodCall.method) {
+            "updateAlbum" -> {
+                val path: String = methodCall.argument("path")
+                val name: String = methodCall.argument("name")
+                try {
+                    MediaStore.Images.Media.insertImage(context.contentResolver, path, name, null)
+                } catch (e: Exception) {
+                    e.printStackTrace()
+                }
+                // 最后通知图库更新
+                context.sendBroadcast(Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://$path")))
+            }
+        }
+        result.success(null) //没有返回值，所以直接返回为null
+    }
+
+}

lib/common/utils/CommonUtils.dart

@@ -97,23 +97,29 @@ class CommonUtils {
     return appPath;
   }
 
-  static saveImage(String url) async  {
+  static saveImage(String url) async {
     Future<String> _findPath(String imageUrl) async {
       final cache = await CacheManager.getInstance();
       final file = await cache.getFile(imageUrl);
-      if(file == null) {
+      if (file == null) {
         return null;
       }
       Directory localPath = await CommonUtils.getLocalPath();
-      if(localPath == null) {
+      if (localPath == null) {
         return null;
       }
-      final result = await file.copy(localPath.path + file.path.substring(file.path.lastIndexOf("/")));
+      final name = splitFileNameByPath(file.path);
+      final result = await file.copy(localPath.path + name);
       return result.path;
     }
+
     return _findPath(url);
   }
 
+  static splitFileNameByPath(String path) {
+    return path.substring(path.lastIndexOf("/"));
+  }
+
   static getFullName(String repository_url) {
     if (repository_url != null && repository_url.substring(repository_url.length - 1) == "/") {
       repository_url = repository_url.substring(0, repository_url.length - 1);

lib/page/PhotoViewPage.dart

@@ -1,4 +1,7 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_spinkit/flutter_spinkit.dart';
 import 'package:fluttertoast/fluttertoast.dart';
 import 'package:gsy_github_app_flutter/common/style/GSYStyle.dart';
@@ -29,6 +32,10 @@ class PhotoViewPage extends StatelessWidget {
             CommonUtils.saveImage(url).then((res) {
               if (res != null) {
                 Fluttertoast.showToast(msg: res);
+                if (Platform.isAndroid) {
+                  const updateAlbum = const MethodChannel('com.shuyu.gsygithub.gsygithubflutter/UpdateAlbumPlugin');
+                  updateAlbum.invokeMethod('updateAlbum', { 'path': res, 'name': CommonUtils.splitFileNameByPath(res)});
+                }
               }
             });
           },