I'm a beginner in java/Android and I try to parse JSON with Gson.
I'm having some difficulty with the files part. From what I've read I should use MapHash but I'm not sure how to use it in this code
Here my Main class
InputStream source = retrieveStream(url);
Gson gson = new Gson();
Reader reader = new InputStreamReader(source);
SearchResponse response = gson.fromJson(reader, SearchResponse.class);
The class that do the parsing
public class SearchResponse {
public List<Podcast> podcasts;
class Podcast {
@SerializedName("files")
private List<File> files;
@SerializedName("format")
private String format;
@SerializedName("title")
private String title;
class File {
private String ValueX;
private String URLX;
}
}
}
json structure
{
"podcasts": [
{
"files": [
{"NameA": "ValueA"},
{"NameB": "ValueB"},
{"...": "..."}
],
"format": "STRING",
"title": "STRING"
}
]
}
Thanks for your help
here's an edited file of the structure of the JSon I try to parse http://jsontest.web44.net/noauth.json
In your File
class you have 2 attributes: ValueX
and URLX
. But in your JSON you have 2 fields NameA
and NameB
...
Names in JSON response and your class must match, otherwise you won't get any value...
Apart from that, your class structure looks good, and your code for deseralizing looks good as well... I don't think you need any HashMap
...
EDIT: Taking into account your comment, you could use a HashMap
. You could change your Podcast
class using:
@SerializedName("files")
private List<Map<String,String>> files;
And you should get it parsed correctly.
You have to use a List
because you have a JSON array (surrounded by [ ]
), and then you can use the Map
to allow different field names.
Note that you have to delete your File
class...
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