如何获取json数组的长度？ 只需要知道response.lenght()。但是这种方法给出错误的数字。请帮助我。Android使用gson解析json数组如何获取json数组的长度
例外： - > org.json.JSONException：不是原始数组：类org.json.JSONArray
，这里是我的代码
private ArrayList parseJson(JSONArray response){
System.out.println("lenght:" + response.length());
ArrayList orders = new ArrayList<>();
try {
JSONArray jsonarray = new JSONArray(response);
for (int i = 0; i < jsonarray.length(); i++) {
Order order = new Order();
try {
JSONObject rootJsonObject = response.getJSONObject(i);
order.setId(rootJsonObject.getInt("id"));
} catch (JSONException e) {
e.printStackTrace();
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return orders;
}
[
{
"id": 45,
"products": [
[
1,
10
],
[
2,
5
],
[
3,
1
]
],
"delivery_price": 18.86,
"product_details": [
{
"id": 1,
"name": "Ürün 1",
"price": "4.56",
"created_at": "1491491836",
"updated_at": "1491491836",
"pivot": {
"order_id": 45,
"product_id": 1
}
},
{
"id": 2,
"name": "Ürün 2",
"price": "15.76",
"created_at": "1491491842",
"updated_at": "1491491842",
"pivot": {
"order_id": 45,
"product_id": 2
}
},
{
"id": 3,
"name": "Ürün 3",
"price": "11.28",
"created_at": "1491491849",
"updated_at": "1491491849",
"pivot": {
"order_id": 45,
"product_id": 3
}
}
]
},
{
"id": 47,
"products": [
[
2,
10
]
],
"delivery_price": 18.34,
"product_details": [
{
"id": 2,
"name": "Ürün 2",
"price": "15.76",
"created_at": "1491491842",
"updated_at": "1491491842",
"pivot": {
"order_id": 47,
"product_id": 2
}
}
]
}
]
+1
该文件说什么？ –
+0
请阅读[问] - 留下想要的并开始尝试。 –
+0
对我的问题感到抱歉。这个问题是第一个。我没有编辑我的问题，但我会学习。最后我想把jsonarray解析为我的数组列表 –
