自定义网络方法增加请求头参数

Signed-off-by: zgf <zenggaofeng2@h-partners.com>

entry/src/main/ets/pages/SingleImage.ets

@@ -88,6 +88,10 @@ struct SingleImage {
             placeholderSrc: $r("app.media.loading"),
             errorholderSrc: $r("app.media.failed"),
             objectFit: ImageFit.Contain,
+            headerOption:[{
+              key:"refer",
+              value:"xx.xx.xx.xx"
+            }],
             customGetImage: custom,
             transformation: new BlurTransformation(10)
           }
@@ -124,8 +128,9 @@ struct SingleImage {
 
 // 自定义下载方法
 @Concurrent
-async function custom(context: Context, src: string | PixelMap | Resource): Promise<ArrayBuffer | undefined> {
-  console.info("ImageKnife::  custom download：" + src)
+async function custom(context: Context, src: string | PixelMap | Resource,headers?: Record<string, Object>): Promise<ArrayBuffer | undefined> {
+  let refer = headers!["refer"] as string
+  console.info("ImageKnife::  custom download：" + src,"refer:"+refer)
   // 举例写死从本地文件读取，也可以自己请求网络图片
   return context.resourceManager.getMediaContentSync($r("app.media.startIcon").id).buffer as ArrayBuffer
 }