如何迭代JSON对象以获取android中的JSON数组 我的代码在我的JSON数组中不会返回任何值，我认为这是因为它不是我的JSON对象中的第一项，因为我使用的大多数JSON数组通常是其JSON对象中的第一项。 ....当我替换JSON对象时代码工作正常...我只需要知道如何获得＆＃34; items＆＃34; ......请
JSON: {
"total_count": 9,
"incomplete_results": false,
"items": [
{
"login": "unicodeveloper",
"id": 2946769,
"avatar_url": "https://avatars2.githubusercontent.com/u/2946769?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/unicodeveloper",
"html_url": "https://github.com/unicodeveloper",
"followers_url": "https://api.github.com/users/unicodeveloper/followers",
"following_url": "https://api.github.com/users/unicodeveloper/following{/other_user}",
"gists_url": "https://api.github.com/users/unicodeveloper/gists{/gist_id}",
"starred_url": "https://api.github.com/users/unicodeveloper/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/unicodeveloper/subscriptions",
"organizations_url": "https://api.github.com/users/unicodeveloper/orgs",
"repos_url": "https://api.github.com/users/unicodeveloper/repos",
"events_url": "https://api.github.com/users/unicodeveloper/events{/privacy}",
"received_events_url": "https://api.github.com/users/unicodeveloper/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "ireade",
"id": 8677283,
"avatar_url": "https://avatars2.githubusercontent.com/u/8677283?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/ireade",
"html_url": "https://github.com/ireade",
"followers_url": "https://api.github.com/users/ireade/followers",
"following_url": "https://api.github.com/users/ireade/following{/other_user}",
"gists_url": "https://api.github.com/users/ireade/gists{/gist_id}",
"starred_url": "https://api.github.com/users/ireade/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/ireade/subscriptions",
"organizations_url": "https://api.github.com/users/ireade/orgs",
"repos_url": "https://api.github.com/users/ireade/repos",
"events_url": "https://api.github.com/users/ireade/events{/privacy}",
"received_events_url": "https://api.github.com/users/ireade/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "christiannwamba",
"id": 8108337,
"avatar_url": "https://avatars1.githubusercontent.com/u/8108337?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/christiannwamba",
"html_url": "https://github.com/christiannwamba",
"followers_url": "https://api.github.com/users/christiannwamba/followers",
"following_url": "https://api.github.com/users/christiannwamba/following{/other_user}",
"gists_url": "https://api.github.com/users/christiannwamba/gists{/gist_id}",
"starred_url": "https://api.github.com/users/christiannwamba/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/christiannwamba/subscriptions",
"organizations_url": "https://api.github.com/users/christiannwamba/orgs",
"repos_url": "https://api.github.com/users/christiannwamba/repos",
"events_url": "https://api.github.com/users/christiannwamba/events{/privacy}",
"received_events_url": "https://api.github.com/users/christiannwamba/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "ibrahimlawal",
"id": 458428,
"avatar_url": "https://avatars1.githubusercontent.com/u/458428?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/ibrahimlawal",
"html_url": "https://github.com/ibrahimlawal",
"followers_url": "https://api.github.com/users/ibrahimlawal/followers",
"following_url": "https://api.github.com/users/ibrahimlawal/following{/other_user}",
"gists_url": "https://api.github.com/users/ibrahimlawal/gists{/gist_id}",
"starred_url": "https://api.github.com/users/ibrahimlawal/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/ibrahimlawal/subscriptions",
"organizations_url": "https://api.github.com/users/ibrahimlawal/orgs",
"repos_url": "https://api.github.com/users/ibrahimlawal/repos",
"events_url": "https://api.github.com/users/ibrahimlawal/events{/privacy}",
"received_events_url": "https://api.github.com/users/ibrahimlawal/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "emekaonu",
"id": 3802882,
"avatar_url": "https://avatars2.githubusercontent.com/u/3802882?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/emekaonu",
"html_url": "https://github.com/emekaonu",
"followers_url": "https://api.github.com/users/emekaonu/followers",
"following_url": "https://api.github.com/users/emekaonu/following{/other_user}",
"gists_url": "https://api.github.com/users/emekaonu/gists{/gist_id}",
"starred_url": "https://api.github.com/users/emekaonu/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/emekaonu/subscriptions",
"organizations_url": "https://api.github.com/users/emekaonu/orgs",
"repos_url": "https://api.github.com/users/emekaonu/repos",
"events_url": "https://api.github.com/users/emekaonu/events{/privacy}",
"received_events_url": "https://api.github.com/users/emekaonu/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "moyheen",
"id": 8110201,
"avatar_url": "https://avatars1.githubusercontent.com/u/8110201?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/moyheen",
"html_url": "https://github.com/moyheen",
"followers_url": "https://api.github.com/users/moyheen/followers",
"following_url": "https://api.github.com/users/moyheen/following{/other_user}",
"gists_url": "https://api.github.com/users/moyheen/gists{/gist_id}",
"starred_url": "https://api.github.com/users/moyheen/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/moyheen/subscriptions",
"organizations_url": "https://api.github.com/users/moyheen/orgs",
"repos_url": "https://api.github.com/users/moyheen/repos",
"events_url": "https://api.github.com/users/moyheen/events{/privacy}",
"received_events_url": "https://api.github.com/users/moyheen/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "darmie",
"id": 848002,
"avatar_url": "https://avatars1.githubusercontent.com/u/848002?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/darmie",
"html_url": "https://github.com/darmie",
"followers_url": "https://api.github.com/users/darmie/followers",
"following_url": "https://api.github.com/users/darmie/following{/other_user}",
"gists_url": "https://api.github.com/users/darmie/gists{/gist_id}",
"starred_url": "https://api.github.com/users/darmie/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/darmie/subscriptions",
"organizations_url": "https://api.github.com/users/darmie/orgs",
"repos_url": "https://api.github.com/users/darmie/repos",
"events_url": "https://api.github.com/users/darmie/events{/privacy}",
"received_events_url": "https://api.github.com/users/darmie/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "perfectmak",
"id": 3120013,
"avatar_url": "https://avatars0.githubusercontent.com/u/3120013?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/perfectmak",
"html_url": "https://github.com/perfectmak",
"followers_url": "https://api.github.com/users/perfectmak/followers",
"following_url": "https://api.github.com/users/perfectmak/following{/other_user}",
"gists_url": "https://api.github.com/users/perfectmak/gists{/gist_id}",
"starred_url": "https://api.github.com/users/perfectmak/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/perfectmak/subscriptions",
"organizations_url": "https://api.github.com/users/perfectmak/orgs",
"repos_url": "https://api.github.com/users/perfectmak/repos",
"events_url": "https://api.github.com/users/perfectmak/events{/privacy}",
"received_events_url": "https://api.github.com/users/perfectmak/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
},
{
"login": "acekyd",
"id": 4003538,
"avatar_url": "https://avatars1.githubusercontent.com/u/4003538?v=3",
"gravatar_id": "",
"url": "https://api.github.com/users/acekyd",
"html_url": "https://github.com/acekyd",
"followers_url": "https://api.github.com/users/acekyd/followers",
"following_url": "https://api.github.com/users/acekyd/following{/other_user}",
"gists_url": "https://api.github.com/users/acekyd/gists{/gist_id}",
"starred_url": "https://api.github.com/users/acekyd/starred{/owner}{/repo}",
"subscriptions_url": "https://api.github.com/users/acekyd/subscriptions",
"organizations_url": "https://api.github.com/users/acekyd/orgs",
"repos_url": "https://api.github.com/users/acekyd/repos",
"events_url": "https://api.github.com/users/acekyd/events{/privacy}",
"received_events_url": "https://api.github.com/users/acekyd/received_events",
"type": "User",
"site_admin": false,
"score": 1.0
}
]
}
这是我的代码：
try {
String total_count = jsonobject.optString("total_count");
String incomplete_results = jsonobject.optString("incomplete_results");
JSONArray jsonarray = jsonobject.getJSONArray("items");
for ( int i = 0; i < 3; i++) {
HashMap<String, String> map = new HashMap<String, String>();
jsonobject = jsonarray.getJSONObject(i);
// Retrive JSON Objects
map.put("login", jsonobject.getString("login"));
map.put("id", jsonobject.getString("id"));
//map.put("population", jsonobject.getString("population"));
map.put("avatar_url", jsonobject.getString("avatar_url"));
// Set the JSON Objects into the array
arraylist.add(map);
}
} catch (JSONException e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return null;
}`
答案 0 :(得分：0)
让您的JSON存储在变量json。
JSONArray items = json.getJSONArray("items");
for (int i=0; i<items.length(); i++) {
JSONObject item = items.getJSONObject(i);
// TODO: get values from 'item'
}
如果您只想要第一个item：
JSONArray items = json.getJSONArray("items");
JSONObject item = items.getJSONObject(0);
答案 1 :(得分：0)
使用此
如果您的文件存储在response变量
SONObject json=new JSONObject(response); //here get your json data
JSONArray jar=json.getJSONArray("items");
for (int i=0; i<jar.length(); i++) {
JSONObject items = jar.getJSONObject(i);// get values from 'items'
String item=items.getString("login"); //get login like this
}
答案 2 :(得分：0)
你可以像以下一样得到你的对象。
try {
JSONObject jsonObject = new JSONObject("Your json string");
String total_count = jsonObject.optString("total_count");
String incomplete_results = jsonObject.optString("incomplete_results");
JSONArray array = jsonObject.getJSONArray("items");
if (array != null && array.length() >0){
for (int i = 0; i < array.length(); i++) {
JSONObject object = array.getJSONObject(i);
String id = object.getString("id");
.
.
.
}
}
} catch (JSONException e) {
e.printStackTrace();
}
答案 3 :(得分：0)
试试这个，
JSONObject obj=new JSONObject(response);
int total_count=obj.getInt("total_count");
boolean incomplete_results=obj.getBoolean("incomplete_results");
JSONArray items=obj.getJSONArray("items");
for(int i=0;i<items.length();i++)
{
JSONObject items_obj=items.getJSONObject(i);
String login=items_obj.getString("login");
int id=items_obj.getInt("id");
String avatar_url=items_obj.getString("avatar_url");
String gravatar_id=items_obj.getString("gravatar_id");
String url=items_obj.getString("String");
String html_url=items_obj.getString("html_url");
String followers_url=items_obj.getString("followers_url");
String type=items_obj.getString("type");
}