英文:
i cant show image from drawable in my app using JSON
问题
我已经正确地从资源文件（recipe.json）中读取了我的 JSON 数据，该数据包含：
{"id":"1","name":"الوصفة 1","desc":"الوصفة 1","image":"R.drawable.image"}
我在 RecyclerView 中正确地加载了名称和描述，但是使用 getIdentifier() 方法无法显示图像...这是我的代码：
private void addItemsFromJSON() {try {String jsonDataString = readJSONDataFromFile();JSONObject jsonObject = new JSONObject(jsonDataString);JSONArray jsonArray = jsonObject.getJSONArray("recipes");for (int i = 0; i < jsonArray.length(); ++i) {JSONObject itemObj = jsonArray.getJSONObject(i);String name = itemObj.getString("name");String desc = itemObj.getString("desc");String image = itemObj.getString("image");// 通过图像名称获取资源IDint resourceId = getResources().getIdentifier(image, "drawable", getPackageName());Recipe recipe = new Recipe(name, desc, resourceId);recipes.add(recipe);}} catch (JSONException | IOException e) {Log.d(TAG, "addItemsFromJSON: ", e);}}
它会显示标题和描述，但图像为空。
英文:
i did everything right to read my json data from assets (recipe.json) which contains
{"id":"1",
"name":"الوصفة 1",
"desc":"الوصفة 1",
"image":"R.drawable.image"}...
i loaded name and desc correctly in recyclerView but the image doesnt show using getIdentifier() ... this is my code
private void addItemsFromJSON() {try {String jsonDataString = readJSONDataFromFile();JSONObject jsonObject = new JSONObject(jsonDataString);JSONArray jsonArray=jsonObject.getJSONArray("recipes");for (int i=0; i<jsonArray.length(); ++i) {JSONObject itemObj = jsonArray.getJSONObject(i);String name = itemObj.getString("name");String desc = itemObj.getString("desc");String image = itemObj.getString("image");// get resource id by image nameint resourceId =getResources().getIdentifier(image, "drawable",getPackageName());Recipe recipe = new Recipe(name, desc,resourceId);recipes.add(recipe);}} catch (JSONException | IOException e) {Log.d(TAG, "addItemsFromJSON: ", e);}}
it shows the title and describtion but image is empty
答案1
得分: 0
Modify image name in the JSON like
{"id":"1", "name":"image1", "desc":"Image Description", "image":"imageNameInTheDrawable"}
Get the drawable from the resources:
for (int i=0; i<jsonArray.length(); ++i) {JSONObject itemObj = jsonArray.getJSONObject(i);String name = itemObj.getString("name");String desc = itemObj.getString("desc");String imageName = itemObj.getString("image");// Get drawable by image nameDrawable drawable = getResources().getDrawable(getResources().getIdentifier(imageName, "drawable", getPackageName()));Recipe recipe = new Recipe(name, desc, drawable);recipes.add(recipe);}
英文:
Modify image name in the JSON like
{"id":"1", "name":"image1", "desc":"Image Description", "image":"imageNameInTheDrawable"}
Get the drawable from the resources:
for (int i=0; i<jsonArray.length(); ++i) {JSONObject itemObj = jsonArray.getJSONObject(i);String name = itemObj.getString("name");String desc = itemObj.getString("desc");String imageName = itemObj.getString("image");// Get drawable by image nameDrawable drawable = getResources().getDrawable(getResources().getIdentifier(imageName, "drawable", getPackageName()));Recipe recipe = new Recipe(name, desc,drawable);recipes.add(recipe);}
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