补充写入缓存策略样例

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

entry/src/main/ets/pages/Index.ets

@@ -86,7 +86,12 @@ struct Index {
 
         });
       })
+      Button("测试写入缓存策略").margin({top:10}).onClick(()=>{
+        router.push({
+          uri: 'pages/TestWriteCacheStage',
 
+        });
+      })
       Button("图片变换").margin({top:10}).onClick(()=>{
         router.push({
           uri: 'pages/ImageTransformation',

entry/src/main/ets/pages/TestWriteCacheStage.ets

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an 'AS IS' BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ImageKnifeComponent,CacheStrategy,ImageKnifeOption } from '@ohos/imageknife'
+
+@Entry
+@Component
+struct TestWriteCacheStage {
+  @State imageKnifeOption1: ImageKnifeOption = {
+    loadSrc:$r('app.media.startIcon'),
+    placeholderSrc:$r('app.media.loading'),
+    errorholderSrc:$r('app.media.failed')
+  }
+  @State imageKnifeOption2: ImageKnifeOption = {
+    loadSrc:$r('app.media.startIcon'),
+    placeholderSrc:$r('app.media.loading'),
+    errorholderSrc:$r('app.media.failed')
+  }
+  @State imageKnifeOption3: ImageKnifeOption = {
+    loadSrc:$r('app.media.startIcon'),
+    placeholderSrc:$r('app.media.loading'),
+    errorholderSrc:$r('app.media.failed')
+  }
+
+  build() {
+    Column() {
+      Button("写入内存文件缓存").margin({top:10}).onClick(async ()=>{
+        this.imageKnifeOption1 = {
+          loadSrc:'https://hbimg.huabanimg.com/95a6d37a39aa0b70d48fa18dc7df8309e2e0e8e85571e-x4hhks_fw658/format/webp',
+          placeholderSrc:$r('app.media.loading'),
+          errorholderSrc:$r('app.media.failed'),
+          writeCacheStrategy:CacheStrategy.Default
+        }
+      })
+      ImageKnifeComponent({
+        imageKnifeOption: this.imageKnifeOption1
+      }).width(200).height(200).margin({top:10})
+      Button("写入内存缓存").margin({top:10}).onClick(async ()=>{
+        this.imageKnifeOption2 = {
+          loadSrc:"https://hbimg.huabanimg.com/cc6af25f8d782d3cf3122bef4e61571378271145735e9-vEVggB",
+          placeholderSrc:$r('app.media.loading'),
+          errorholderSrc:$r('app.media.failed'),
+          writeCacheStrategy:CacheStrategy.Memory
+        }
+      })
+      ImageKnifeComponent({
+        imageKnifeOption: this.imageKnifeOption2
+      }).width(200).height(200).margin({top:10})
+      Button("写入文件缓存").margin({top:10}).onClick(async ()=>{
+        this.imageKnifeOption3 = {
+          loadSrc:'https://img-blog.csdn.net/20140514114029140',
+          placeholderSrc:$r('app.media.loading'),
+          errorholderSrc:$r('app.media.failed'),
+          writeCacheStrategy:CacheStrategy.File
+        }
+      })
+      ImageKnifeComponent({
+        imageKnifeOption: this.imageKnifeOption3
+      }).width(200).height(200).margin({top:10})
+    }
+    .height('100%') .width('100%')
+  }
+}

entry/src/main/resources/base/profile/main_pages.json

@@ -13,6 +13,7 @@
     "pages/TestIsUrlExist",
     "pages/TestHeader",
     "pages/ImageTransformation",
-    "pages/ObjectFitPage"
+    "pages/ObjectFitPage",
+    "pages/TestWriteCacheStage"
   ]
 }

library/src/main/ets/ImageKnifeDispatcher.ets

@@ -168,6 +168,7 @@ export class ImageKnifeDispatcher {
       }
       // 保存文件缓存
       if (requestJobResult.bufferSize > 0 && currentRequest.imageKnifeOption.writeCacheStrategy !== CacheStrategy.Memory) {
+        LogUtil.log("ImageKnifeComponent writeCacheStrategy File")
         ImageKnife.getInstance().saveWithoutWriteFile(requestJobResult.fileKey, requestJobResult.bufferSize)
       }
 
@@ -179,6 +180,7 @@ export class ImageKnifeDispatcher {
 
       // 保存内存缓存
       if (currentRequest.imageKnifeOption.writeCacheStrategy !== CacheStrategy.File) {
+        LogUtil.log("ImageKnifeComponent writeCacheStrategy Memory")
         ImageKnife.getInstance()
           .saveMemoryCache(this.engineKey.generateMemoryKey(imageSrc, requestSource, currentRequest.imageKnifeOption),
             ImageKnifeData)