HarmonyOS原子化服務(wù)開發(fā)實(shí)戰(zhàn)-Js更新顯示本

1、蛟龍騰飛練習(xí)作品 HarmonyOS原子化服務(wù)開發(fā)實(shí)戰(zhàn)-Js更新顯示本地圖片使用js顯示本地卡片一般步驟：獲取本地圖片路徑/ 獲取相冊的圖片與視頻private void getImage() HiL(TAG,打開相冊); Intent intent = new Intent(); Operation opt=new Intent.OperationBuilder().withAction(ent.action.GET_CONTENT).build(); intent.setOperation(opt); intent.addFlags(Intent.FLA

2、G_NOT_OHOS_COMPONENT); intent.setType(image/*); intent.setBundle(com.huawei.photos); startAbilityForResult(intent, imgRequestCode);/ 圖片選取回調(diào)Overrideprotected void onAbilityResult(int requestCode, int resultCode, Intent resultData) if(requestCode=imgRequestCode) HiL(TAG, 選擇圖片getUriString: + res

3、ultData.getUriString(); /選擇的Img對應(yīng)的Uri String chooseImgUri = resultData.getUriString(); /獲取選擇的Img對應(yīng)的Id String chooseImgId=null; /如果是選擇文件則getUriString結(jié)果為content:/viders.media.documents/document/image%3A30，其中%3A是:的URL編碼結(jié)果，后面的數(shù)字就是image對應(yīng)的Id /如果選擇的是圖庫則getUriString結(jié)果為content:/media/external

4、/images/media/30，最后就是image對應(yīng)的Id /這里需要判斷是選擇了文件還是圖庫 if(chooseImgUri.lastIndexOf(%3A)!=-1) chooseImgId = chooseImgUri.substring(chooseImgUri.lastIndexOf(%3A)+3); else chooseImgId = chooseImgUri.substring(chooseImgUri.lastIndexOf(/)+1); /獲取圖片對應(yīng)的uri，由于獲取到的前綴是content，我們替換成對應(yīng)的dataability前綴 Uri uri=Uri.appe

5、ndEncodedPathToUri(AVStorage.Images.Media.EXTERNAL_DATA_ABILITY_URI,chooseImgId); HiL(TAG,圖片uri+uri); setImaData(uri,chooseImgId); 將本地圖片轉(zhuǎn)換成byte數(shù)據(jù)/定義數(shù)據(jù)能力幫助對象DataAbilityHelper helper = DataAbilityHelper.creator(getContext();FileInputStream inputStream = null;try inputStream = new FileInputStrea

6、m(helper.openFile(uri, r); catch (DataAbilityRemoteException|FileNotFoundException e) e.printStackTrace();/readInputStream將inputStream轉(zhuǎn)換成bytebyte bytes = readInputStream(inputStream); private byte readInputStream(InputStream inputStream) ByteArrayOutputStream baos = new ByteArrayOutputStream(); byte

7、 buffer = new byte1024; int length = -1; try while (length = inputStream.read(buffer) != -1) baos.write(buffer, 0, length); baos.flush(); catch (IOException e) e.printStackTrace(); byte data = baos.toByteArray(); try inputStream.close(); baos.close(); catch (IOException e) e.printStackTrace(); retur

8、n data;卡片顯示圖片ZSONObject result = new ZSONObject();FormBindingData formBindingData = new FormBindingData(result);if (bytes != null & bytes.length != 0) String picName = new Date().getTime() + .png; String picPath = memory:/ + picName; result.put(avatarIma, picPath); formBindingData.addImageData(picName, bytes);try if (this instanceof Ability) for (CardDataTable formtable : ge