feat(mp): 小程序平台 previewImage 参数 current 支持传入索引值

src/platforms/mp-alipay/service/api/protocols.js

@@ -215,9 +215,14 @@ const protocols = { // 需要做转换的 API 列表
   previewImage: {
     args (fromArgs) {
       // 支付宝小程序的 current 是索引值，而非图片地址。
-      if (fromArgs.current && Array.isArray(fromArgs.urls)) {
-        const index = fromArgs.urls.indexOf(fromArgs.current)
-        fromArgs.current = ~index ? index : 0
+      const currentIndex = Number(fromArgs.current)
+      if (isNaN(currentIndex)) {
+        if (fromArgs.current && Array.isArray(fromArgs.urls)) {
+          const index = fromArgs.urls.indexOf(fromArgs.current)
+          fromArgs.current = ~index ? index : 0
+        }
+      } else {
+        fromArgs.current = currentIndex
       }
       return {
         indicator: false,

src/platforms/mp-baidu/service/api/protocols.js

@@ -59,9 +59,19 @@ const protocols = {
     }
   },
   previewImage: {
-    args: {
-      indicator: false,
-      loop: false
+    args (fromArgs) {
+      // 处理传入索引值的情况
+      const currentIndex = Number(fromArgs.current)
+      if (!isNaN(currentIndex)) {
+        const urls = fromArgs.urls && Array.isArray(fromArgs.urls) ? fromArgs.urls.concat() : []
+        fromArgs.urls = urls.filter((item, index) => {
+          return index < currentIndex ? item !== urls[currentIndex] : true
+        })
+      }
+      return {
+        indicator: false,
+        loop: false
+      }
     }
   },
   getRecorderManager: {

src/platforms/mp-toutiao/service/api/protocols.js

@@ -92,9 +92,19 @@ const protocols = {
     }
   },
   previewImage: {
-    args: {
-      indicator: false,
-      loop: false
+    args (fromArgs) {
+      // 处理传入索引值的情况
+      const currentIndex = Number(fromArgs.current)
+      if (!isNaN(currentIndex)) {
+        const urls = fromArgs.urls && Array.isArray(fromArgs.urls) ? fromArgs.urls.concat() : []
+        fromArgs.urls = urls.filter((item, index) => {
+          return index < currentIndex ? item !== urls[currentIndex] : true
+        })
+      }
+      return {
+        indicator: false,
+        loop: false
+      }
     }
   },
   connectSocket: {

src/platforms/mp-weixin/service/api/protocols.js

-export const protocols = {}
+export const protocols = {
+  previewImage: {
+    args (fromArgs) {
+      // 处理传入索引值的情况
+      const currentIndex = Number(fromArgs.current)
+      if (!isNaN(currentIndex)) {
+        const urls = fromArgs.urls && Array.isArray(fromArgs.urls) ? fromArgs.urls.concat() : []
+        fromArgs.urls = urls.filter((item, index) => {
+          return index < currentIndex ? item !== urls[currentIndex] : true
+        })
+      }
+    }
+  }
+}
 export const todos = []
 export const canIUses = []