媒体url样例改用photoAccessHelper接口获取本地图片资源

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

entry/src/main/ets/entryability/EntryAbility.ets

@@ -33,7 +33,7 @@ export default class EntryAbility extends UIAbility {
 
   async onWindowStageCreate(windowStage: window.WindowStage): Promise<void> {
     // Main window is created, set main page for this ability
-    let list: Array<Permissions> = ['ohos.permission.MEDIA_LOCATION', 'ohos.permission.READ_MEDIA'];
+    let list: Array<Permissions> = ['ohos.permission.READ_IMAGEVIDEO', 'ohos.permission.WRITE_IMAGEVIDEO'];
     let permissionRequestResult: Object;
     let atManager = abilityAccessCtrl.createAtManager();
     atManager.requestPermissionsFromUser(this.context, list, (err: BusinessError, result: Object) => {

entry/src/main/ets/pages/dataShareUriLoadPage.ets

@@ -12,8 +12,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import mediaLibrary from '@ohos.multimedia.mediaLibrary';
 import { ImageKnifeComponent, ImageKnifeOption } from '@ohos/libraryimageknife'
+import { dataSharePredicates } from '@kit.ArkData';
+import { photoAccessHelper } from '@kit.MediaLibraryKit';
 
 
 @Entry
@@ -34,56 +35,26 @@ struct DataShareUriLoadPage {
         Text("获取媒体图库的uri用ImageKnife展示").fontSize(15)
         Flex({ direction: FlexDirection.Row, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
           Button("点击加载Uri并展示")
-            .onClick(() => {
+            .onClick(async () => {
-              // 获取mediaLibrary实例，后续用到此实例均采用此处获取的实例
+              const context = getContext(this)
-              const context = getContext(this);
+              let phAccessHelper = photoAccessHelper.getPhotoAccessHelper(context)
-              let media = mediaLibrary.getMediaLibrary(context);
+              let predicates: dataSharePredicates.DataSharePredicates = new dataSharePredicates.DataSharePredicates
-
+              let fetchOptions: photoAccessHelper.FetchOptions = {
-              let imageType = mediaLibrary.MediaType.IMAGE;
+                fetchColumns:[],
-              // 创建文件获取选项，此处参数为获取image类型的文件资源
+                predicates:predicates
-              let imagesFetchOp:mediaLibrary.MediaFetchOptions = {
+              }
-                selections: mediaLibrary.FileKey.MEDIA_TYPE + '= ?',
+              let fetchResult = await phAccessHelper.getAssets(fetchOptions)
-                selectionArgs: [imageType.toString()],
+              if(fetchResult != undefined) {
-              };
+                console.info("fetchResult success")
-              // 获取文件资源，使用callback方式返回异步结果
+                let photoAsset: photoAccessHelper.PhotoAsset = await fetchResult.getFirstObject()
-              media.getFileAssets(imagesFetchOp, (error, fetchFileResult) => {
+                if(photoAsset != undefined) {
-                // 判断获取的文件资源的检索结果集是否为undefined，若为undefined则接口调用失败
+                  console.info("photoAsset.displayName :"+photoAsset.displayName)
-                if (fetchFileResult == undefined) {
-                  console.log('get fetchFileResult failed with error: ' + error);
-                  return;
-                }
-                // 获取文件检索结果集中的总数
-                const count = fetchFileResult.getCount();
-                // 判断结果集中的数量是否小于0，小于0时表示接口调用失败
-                if (count < 0) {
-                  console.log('get count from fetchFileResult failed, count: ' + count);
-                  return;
-                }
-                // 判断结果集中的数量是否等于0，等于0时表示接口调用成功，但是检索结果集为空，请检查文件获取选项参数配置是否有误和设备中是否存在相应文件
-                if (count == 0) {
-                  console.log('The count of fetchFileResult is zero');
-                  return;
-                }
-                console.log('Get fetchFileResult successfully, count: ' + count);
-                // 获取文件检索结果集中的第一个资源，使用callback方式返回异步结果
-                fetchFileResult.getFirstObject((error, fileAsset) => {
-                  // 检查获取的第一个资源是否为undefined，若为undefined则接口调用失败
-                  if (fileAsset == undefined) {
-                    console.log('get first object failed with error: ' + error);
-                    return;
-                  }
-                  console.log("fileAsset id=" + fileAsset.id + " fileAsset uri=" + fileAsset.uri + " fileAsset displayName=" + fileAsset.displayName)
-
-                  // 加载图库第一张图片的uri
                   this.imageKnifeOption1 = {
-                    loadSrc: fileAsset.uri,
+                    loadSrc: photoAsset.uri,
-                    placeholderSrc: $r('app.media.loading'),
+                    placeholderSrc:$r('app.media.loading')
-                    errorholderSrc: $r('app.media.failed')
                   }
-                  // 释放FetchFileResult实例并使其失效。无法调用其他方法
+                }
-                  fetchFileResult.close();
+              }
-                });
-              });
             }).margin({ top: 5, left: 3 })
           ImageKnifeComponent({ imageKnifeOption: this.imageKnifeOption1 }).width(300).height(300)
         }.width('100%').backgroundColor(Color.Pink)

entry/src/main/module.json5

@@ -45,8 +45,8 @@
         }
       },
       {
-        "name": "ohos.permission.MEDIA_LOCATION",
+        "name": "ohos.permission.WRITE_IMAGEVIDEO",
-        "reason":"$string:app_permission_MEDIA_LOCATION",
+        "reason":"$string:app_permission_WRITE_IMAGEVIDEO",
         "usedScene": {
           "abilities": [
             "EntryAbility"
@@ -55,8 +55,8 @@
         }
       },
       {
-        "name": "ohos.permission.READ_MEDIA",
+        "name": "ohos.permission.READ_IMAGEVIDEO",
-        "reason": "$string:app_permission_MEDIA_LOCATION",
+        "reason": "$string:app_permission_READ_IMAGEVIDEO",
         "usedScene": {
           "abilities": [
             "EntryAbility"

entry/src/main/resources/base/element/string.json

@@ -13,12 +13,12 @@
       "value": "label"
     },
     {
-      "name": "app_permission_MEDIA_LOCATION",
+      "name": "app_permission_WRITE_IMAGEVIDEO",
-      "value": "获取媒体图片"
+      "value": "获取写入媒体资源权限"
     },
     {
-      "name": "app_permission_READ_MEDIA",
+      "name": "app_permission_READ_IMAGEVIDEO",
-      "value": "读媒体图片"
+      "value": "获取读媒体资源权限"
     }
   ]
 }

entry/src/main/resources/en_US/element/string.json

@@ -13,12 +13,12 @@
       "value": "label"
     },
     {
-      "name": "app_permission_MEDIA_LOCATION",
+      "name": "app_permission_WRITE_IMAGEVIDEO",
-      "value": "获取媒体图片"
+      "value": "获取写入媒体资源权限"
     },
     {
-      "name": "app_permission_READ_MEDIA",
+      "name": "app_permission_READ_IMAGEVIDEO",
-      "value": "读媒体图片"
+      "value": "获取读媒体资源权限"
     }
   ]
 }

entry/src/main/resources/zh_CN/element/string.json

@@ -13,12 +13,12 @@
       "value": "label"
     },
     {
-      "name": "app_permission_MEDIA_LOCATION",
+      "name": "app_permission_WRITE_IMAGEVIDEO",
-      "value": "获取媒体图片"
+      "value": "获取写入媒体资源权限"
     },
     {
-      "name": "app_permission_READ_MEDIA",
+      "name": "app_permission_READ_IMAGEVIDEO",
-      "value": "读媒体图片"
+      "value": "获取读媒体资源权限"
     }
   ]
 }