如何在JSON对象中获取JSON数组？

本文介绍了如何在JSON对象中获取JSON数组？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

这是我的JSON

{ "data": [ { "id": 1, "Name": "Choc Cake", "Image": "1.jpg", "Category": "Meal", "Method": "", "Ingredients": [ { "name": "1 Cup Ice" }, { "name": "1 Bag Beans" } ] }, { "id": 2, "Name": "Ice Cake", "Image": "dfdsfdsfsdfdfdsf.jpg", "Category": "Meal", "Method": "", "Ingredients": [ { "name": "1 Cup Ice" } ] } ] }

这就是我获取id的方法，这部分名称在获得第一部分时工作正常o f JSON

And this is how i am getting the id, name this part works fine in getting the first part of JSON

//getting whole json string JSONObject jsonObj = new JSONObject(jsonStr); //extracting data array from json string JSONArray ja_data = jsonObj.getJSONArray("data"); int length = jsonObj .length(); //loop to get all json objects from data json array for(int i=0; i<length; i++) { JSONObject jObj = ja_data.getJSONObject(i); Toast.makeText(this, jObj.getString("Name").toString(), Toast.LENGTH_LONG).show(); // getting inner array Ingredients JSONArray ja = jObj.getJSONArray("Ingredients"); int len = ja.length(); }

现在我正试图获得成分不确定如何这是我一直在尝试

Now i'm trying to get the ingredients not sure how to this is what i have been trying

//getting whole json string JSONObject jsonObj = new JSONObject(jsonStr); //extracting data array from json string JSONArray ja_data = jsonObj.getJSONArray("data"); int length = jsonObj .length(); //loop to get all json objects from data json array for(int i=0; i<length; i++) { JSONObject jObj = ja_data.getJSONObject(i); Toast.makeText(this, jObj.getString("Name").toString(), Toast.LENGTH_LONG).show(); // getting inner array Ingredients JSONArray ja = jObj.getJSONArray("Ingredients"); int len = ja.length(); // getting json objects from Ingredients json array for(int j=0; j<len; j++) { JSONObject json = ja.getJSONObject(j); Toast.makeText(this, json.getString("name").toString(), Toast.LENGTH_LONG).show(); } }

但是不行不通怎样才能得到它？

But Does does not work how can i get it ?

推荐答案

我想这会对你有帮助。

JSONObject jsonObj = new JSONObject(jsonStr); JSONArray ja_data = jsonObj.getJSONArray("data"); int length = jsonObj.length(); for(int i=0; i<length; i++) { JSONObject jsonObj = ja_data.getJSONObject(i); Toast.makeText(this, jsonObj.getString("Name").toString(), Toast.LENGTH_LONG).show(); // getting inner array Ingredients JSONArray ja = jsonObj.getJSONArray("Ingredients"); int len = ja.length(); ArrayList<String> Ingredients_names = new ArrayList<>(); for(int j=0; j<len; j++) { JSONObject json = ja.getJSONObject(j); Ingredients_names.add(json.getString("name").toString()); } }