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我已經從json數據到我的android應用程序的標題，作者和發佈日期。如何從嵌套的json數據獲取數組值（java android）
我試圖讓event_start_date和event_location，但未能成功。任何人都可以幫助我如何獲得它？
JSON：
{
"status": "ok",
"count": 1,
"count_total": 29,
"pages": 29,
"posts": [
{
"id": 2815,
"type": "event",
"slug": "itb-integrated-career-days",
"url": "http://example.com/event/itb-integrated-career-days/",
"status": "publish",
"title": "Title",
"title_plain": "Title",
"content": "<p>test</p>\n",
"excerpt": "<p>test […]</p>\n",
"date": "2015-09-25 01:09:40",
"modified": "2015-09-29 22:52:35",
"categories": [],
"tags": [],
"author": {
"id": 1,
"slug": "john",
"name": "john",
"first_name": "",
"last_name": "",
"nickname": "john",
"url": "",
"description": ""
},
"comments": [],
"attachments": [
{
"id": 2817,
"url": "http://example.com/wp-content/uploads/2015/09/bannertkt102015.gif",
"slug": "bannertkt102015",
"title": "bannertkt102015",
"description": "",
"caption": "",
"parent": 2815,
"mime_type": "image/gif",
"images": {
"full": {
"url": "http://example.com/wp-content/uploads/2015/09/bannertkt102015.gif",
"width": 1000,
"height": 563
},
"thumbnail": {
"url": "http://example.com/wp-content/uploads/2015/09/bannertkt102015-150x150.gif",
"width": 150,
"height": 150
},
"medium": {
"url": "http://example.com/wp-content/uploads/2015/09/bannertkt102015-300x169.gif",
"width": 300,
"height": 169
},
"large": {
"url": "http://example.com/wp-content/uploads/2015/09/bannertkt102015.gif",
"width": 1000,
"height": 563
},
"blog-default": {
"url": "http://example.com/wp-content/uploads/2015/09/bannertkt102015-806x300.gif",
"width": 806,
"height": 300
}
}
},
{
"id": 2818,
"url": "http://example.com/wp-content/uploads/2015/09/2015-09-25_012008.jpg",
"slug": "2015-09-25_012008",
"title": "2015-09-25_012008",
"description": "",
"caption": "",
"parent": 2815,
"mime_type": "image/jpeg",
"images": {
"full": {
"url": "http://example.com/wp-content/uploads/2015/09/2015-09-25_012008.jpg",
"width": 589,
"height": 529
},
"thumbnail": {
"url": "http://example.com/wp-content/uploads/2015/09/2015-09-25_012008-150x150.jpg",
"width": 150,
"height": 150
},
"medium": {
"url": "http://example.com/wp-content/uploads/2015/09/2015-09-25_012008-300x269.jpg",
"width": 300,
"height": 269
},
"large": {
"url": "http://example.com/wp-content/uploads/2015/09/2015-09-25_012008.jpg",
"width": 589,
"height": 529
},
"blog-default": {
"url": "http://example.com/wp-content/uploads/2015/09/2015-09-25_012008-589x300.jpg",
"width": 589,
"height": 300
}
}
}
],
"comment_count": 0,
"comment_status": "open",
"thumbnail": "http://example.com/wp-content/uploads/2015/09/2015-09-25_012008-150x150.jpg",
"custom_fields": {
"event_location": [
"New York"
],
"event_start_date": [
"10/23/2015"
],
"event_start_time": [
"09:00 AM"
],
"event_start_date_number": [
"1445590800"
],
"event_address_country": [
"US"
],
"event_address_state": [
"Jawdst"
],
"event_address_city": [
"New York"
],
"event_address_address": [
"Gedung Sasana Budaya Ganesha (Sabuga) Jalan Tamansari 73, New York"
],
"event_address_zip": [
"42132"
],
"event_phone": [
"5345"
],
"post_views_count": [
"23"
]
}
}
]
}
我的功能
public void parseJson(JSONObject json) {
try {
info.pages = json.getInt("pages");
// parsing json object
if (json.getString("status").equalsIgnoreCase("ok")) {
JSONArray posts = json.getJSONArray("posts");
info.feedList = new ArrayList<PostItem>();
for (int i = 0; i < posts.length(); i++) {
Log.v("INFO",
"Step 3: item " + (i + 1) + " of " + posts.length());
try {
JSONObject post = (JSONObject) posts.getJSONObject(i);
PostItem item = new PostItem();
item.setTitle(Html.fromHtml(post.getString("title"))
.toString());
item.setDate(post.getString("date"));
item.setId(post.getInt("id"));
item.setUrl(post.getString("url"));
item.setContent(post.getString("content"));
if (post.has("author")) {
Object author = post.get("author");
if (author instanceof JSONArray
&& ((JSONArray) author).length() > 0) {
author = ((JSONArray) author).getJSONObject(0);
}
if (author instanceof JSONObject
&& ((JSONObject) author).has("name")) {
item.setAuthor(((JSONObject) author)
.getString("name"));
}
}
if (post.has("tags") && post.getJSONArray("tags").length() > 0) {
item.setTag(((JSONObject) post.getJSONArray("tags").get(0)).getString("slug"));
}
// TODO do we dear to remove catch clause?
try {
boolean thumbnailfound = false;
if (post.has("thumbnail")) {
String thumbnail = post.getString("thumbnail");
if (thumbnail != "") {
item.setThumbnailUrl(thumbnail);
thumbnailfound = true;
}
}
if (post.has("attachments")) {
JSONArray attachments = post
.getJSONArray("attachments");
// checking how many attachments post has and
// grabbing the first one
if (attachments.length() > 0) {
JSONObject attachment = attachments
.getJSONObject(0);
item.setAttachmentUrl(attachment
.getString("url"));
// if we do not have a thumbnail yet, get
// one now
if (attachment.has("images")
&& !thumbnailfound) {
JSONObject thumbnail;
if (attachment.getJSONObject("images")
.has("post-thumbnail")) {
thumbnail = attachment
.getJSONObject("images")
.getJSONObject(
"post-thumbnail");
item.setThumbnailUrl(thumbnail
.getString("url"));
} else if (attachment.getJSONObject(
"images").has("thumbnail")) {
thumbnail = attachment
.getJSONObject("images")
.getJSONObject("thumbnail");
item.setThumbnailUrl(thumbnail
.getString("url"));
}
}
}
}
} catch (Exception e) {
Log.v("INFO",
"Item "
+ i
+ " of "
+ posts.length()
+ " will have no thumbnail or image because of exception!");
e.printStackTrace();
}
if (item.getId() != info.ignoreId)
info.feedList.add(item);
} catch (Exception e) {
Log.v("INFO", "Item " + i + " of " + posts.length()
+ " has been skipped due to exception!");
e.printStackTrace();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
我建議你使用GSON庫，它會幫助你很方便地提取數據。 –
自定義字段應該是數組而非對象。 – warlock