Heyy guyz我正在接收JSON使用谷歌地方详细信息api然后在那个Json我正在寻找“评论”数组。但在logcat我收到系统错误，没有值的评论。但我检查了Json有存在的评论array.Where问题？Thanx提前。这是我的JSON数据：
{
"result" : {
"address_components" : [
{
"long_name" : "Kalyan",
"short_name" : "Kalyan",
"types" : [ "locality", "political" ]
},
{
"long_name" : "Maharashtra",
"short_name" : "Maharashtra",
"types" : [ "administrative_area_level_1", "political" ]
},
{
"long_name" : "India",
"short_name" : "IN",
"types" : [ "country", "political" ]
},
{
"long_name" : "421301",
"short_name" : "421301",
"types" : [ "postal_code" ]
}
],
"reviews" : [
{
"aspects" : [
{
"rating" : 0,
"type" : "overall"
}
],
"author_name" : "Kunal Korde",
"author_url" : "https://plus.google.com/108837578005055609416",
"language" : "en",
"rating" : 1,
"text" : "it is very bad to call domino one and only kalyan
"time" : 1382351314
},
{
"aspects" : [
{
"rating" : 3,
"type" : "food"
},
{
"rating" : 2,
"type" : "decor"
},
{
"rating" : 1,
"type" : "service"
}
],
"author_name" : "Hits Daiya",
"author_url" : "https://plus.google.com/101565870698816750539",
"language" : "en",
"rating" : 4,
"text" : "wt a excellent food anybody can get here! I wanna to say that wt a
"time" : 1371385367
},
{
"aspects" : [
{
"rating" : 1,
"type" : "overall"
}
],
"author_name" : "nirmit jallawar",
"author_url" : "https://plus.google.com/116255076196839398528",
"language" : "en",
"rating" : 3,
"text" : "Good but a bit more of standard is necessary ",
"time" : 1402139860
},
{
"aspects" : [
{
"rating" : 2,
"type" : "food"
},
{
"rating" : 0,
"type" : "decor"
},
{
"rating" : 1,
"type" : "service"
}
],
"author_name" : "Rutam Mokashi",
"author_url" : "https://plus.google.com/112151348544733227698",
"language" : "en",
"rating" : 3,
"text" : "best place for pizzas in kalyan...",
"time" : 1353151680
},
{
"aspects" : [
{
"rating" : 1,
"type" : "food"
},
{
"rating" : 2,
"type" : "decor"
},
{
"rating" : 2,
"type" : "service"
}
],
"author_name" : "A.A Varghese varghese",
"author_url" : "https://plus.google.com/103110235851606786394",
"language" : "en",
"rating" : 4,
"text" : "nice hotel.",
"time" : 1375596316
}
],
"scope" : "GOOGLE",
"types" : [ "restaurant", "food", "establishment" ],
"url" : "https://plus.google.com/107013844902194125587/about?hl=en-US",
"user_ratings_total" : 32,
"utc_offset" : 330,
"vicinity" : "Plot No. C 1, Ground Floor, Shop No. 2, 3 & 4, Chikanghar, Kalyan",
"website" : "http://www.dominos.co.in/"
},
"status" : "OK"
}
这是我的代码：
public class Review_activity extends ActivityGroup {
protected static LocalActivityManager mLocalActivityManager;
// Alert Dialog Manager
AlertDialogManager alert = new AlertDialogManager();
ProgressDialog pDialog;
JSONObject json = null;
// Review Listview
ListView list;
String reference;
public static final String TAG_name = "-NA-";
public static final String TAG_rating = "-NA-";
public static final String TAG_text = "-NA-";
public static String reference_value = "reference";
public static String KEY_REFERENCE = "reference";// id of the place
private static final String TEL_PREFIX = "tel:";
ArrayList<HashMap<String, String>> oslist = newArrayList<HashMap<String,String>>();
// public static String url = "";
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.review);
oslist = new ArrayList<HashMap<String, String>>();
// Getting listview
list = (ListView) findViewById(R.id.list);
// Getting place reference from the map
reference = getIntent().getStringExtra("reference");
Log.d("yogesh", reference);
String sb ="https://maps.googleapis.com/maps/api/place/details/json?";
String sb1=sb.concat("&reference="+reference);
String sb2=sb1.concat("&sensor=true");
String sb3=sb2.concat("&key=AIzaSyChVcy-8fLkAq5-ZJCuNomF1lIf-Gda7s8");
String url=sb3;
Log.d("URL", url);
new JSONParse().execute(url);
}
private class JSONParse extends AsyncTask<String, String, JSONObject> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Review_activity.this);
pDialog.setMessage("Getting Reviews ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected JSONObject doInBackground(String... params) {
JSONParser jParser = new JSONParser();
// Getting JSON from URL
String s = params[0];
Log.d("URL", s);
JSONObject json = jParser.getJSONFromUrl(s);
return json;
}
@Override
protected void onPostExecute(JSONObject json) {
pDialog.dismiss();
try {
// Getting JSON Array from URL
JSONArray jArray = json.getJSONArray("reviews");
int k;
k=jArray.length();
k--;
String Alength=String.valueOf(k);
Log.d("Array length", Alength);
//To get the items from the array
int j=0;
for (int i=0;i<=k;i++)
{
JSONObject r1 = jArray.getJSONObject(j);
String aname = r1.getString("author_name");
String arating = r1.getString("rating");
String text = r1.getString("text");
Log.d("review", aname);
Log.d("review", arating);
Log.d("review", text);
j++;
// Adding value HashMap key => value
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_name, aname);
map.put(TAG_rating, arating);
map.put(TAG_text,text );
oslist.add(map);
}
list=(ListView)findViewById(R.id.list);
ListAdapter adapter = new SimpleAdapter(Review_activity.this, oslist,
R.layout.review_item,
new String[] { TAG_name,TAG_rating, TAG_text }, new int[] {
R.id.textView2,R.id.textView4, R.id.textView6});
list.setAdapter(adapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
答案 0 :(得分：1)
我发现你的json不是一个有效的json
使用check if json is valid or not来检查有效的json
我纠正它，有效的json在这里
{
"result": {
"address_components": [
{
"long_name": "Kalyan",
"short_name": "Kalyan",
"types": [
"locality",
"political"
]
},
{
"long_name": "Maharashtra",
"short_name": "Maharashtra",
"types": [
"administrative_area_level_1",
"political"
]
},
{
"long_name": "India",
"short_name": "IN",
"types": [
"country",
"political"
]
},
{
"long_name": "421301",
"short_name": "421301",
"types": [
"postal_code"
]
}
],
"reviews": [
{
"aspects": [
{
"rating": 0,
"type": "overall"
}
],
"author_name": "Kunal Korde",
"author_url": "https://plus.google.com/108837578005055609416",
"language": "en",
"rating": 1,
"text": "it is very bad to call domino one and only kalyan",
"time": 1382351314
},
{
"aspects": [
{
"rating": 3,
"type": "food"
},
{
"rating": 2,
"type": "decor"
},
{
"rating": 1,
"type": "service"
}
],
"author_name": "HitsDaiya",
"author_url": "https: //plus.google.com/101565870698816750539",
"language": "en",
"rating": 4,
"text": "wtaexcellentfoodanybodycangethere!Iwannatosaythatwta",
"time": 1371385367
},
{
"aspects": [
{
"rating": 1,
"type": "overall"
}
],
"author_name": "nirmitjallawar",
"author_url": "https: //plus.google.com/116255076196839398528",
"language": "en",
"rating": 3,
"text": "Goodbutabitmoreofstandardisnecessary",
"time": 1402139860
},
{
"aspects": [
{
"rating": 2,
"type": "food"
},
{
"rating": 0,
"type": "decor"
},
{
"rating": 1,
"type": "service"
}
],
"author_name": "RutamMokashi",
"author_url": "https: //plus.google.com/112151348544733227698",
"language": "en",
"rating": 3,
"text": "bestplaceforpizzasinkalyan...",
"time": 1353151680
},
{
"aspects": [
{
"rating": 1,
"type": "food"
},
{
"rating": 2,
"type": "decor"
},
{
"rating": 2,
"type": "service"
}
],
"author_name": "A.AVarghesevarghese",
"author_url": "https: //plus.google.com/103110235851606786394",
"language": "en",
"rating": 4,
"text": "nicehotel.",
"time": 1375596316
}
],
"scope": "GOOGLE",
"types": [
"restaurant",
"food",
"establishment"
],
"url": "https: //plus.google.com/107013844902194125587/about?hl=en-US",
"user_ratings_total": 32,
"utc_offset": 330,
"vicinity": "PlotNo C1 GroundFloor ShopNo 2 3 4 Chikanghar Kalyan",
"website": "http: //www.dominos.co.in/"
},
"status": "OK"
}
我发现你的代码看起来非常正确......
更安全的一面是首先打印响应json并检查它是否有效....
答案 1 :(得分：0)
问题是你首先得到json对象＆＃34;结果＆＃34;然后使用该对象查找json数组以供查看。
jsonobject = json.getJsonObject("result");
resultArray = jsonobject.getJsonArray("review");