{
“DS”: {
“LST”: [
{
“OID”: 1,
“OCD”: “1”,
“OPE”: “AIRCEL”,
“IPH”: “Images/provider/aircelsm.jpg”,
“MIL”: 10,
“MXL”: 10
},
{
“OID”: 2,
“OCD”: “3”,
“OPE”: “AIRTEL”,
“IPH”: “Images/provider/airtelsm.jpg”,
“MIL”: 10,
“MXL”: 10
},
{
“OID”: 4,
“OCD”: “4”,
“OPE”: “BSNL”,
“IPH”: “Images/provider/bsnlsm.jpg”,
“MIL”: 10,
“MXL”: 10
},
{
“OID”: 6,
“OCD”: “5”,
“OPE”: “DOCOMO”,
“IPH”: “Images/provider/docomosm.jpg”,
“MIL”: 10,
“MXL”: 10
},
{
“OID”: 7,
“OCD”: “6”,
“OPE”: “IDEA”,
“IPH”: “Images/provider/ideasm.jpg”,
“MIL”: 10,
“MXL”: 10
},
{
“OID”: 8,
“OCD”: “7”,
“OPE”: “MTS”,
“IPH”: “Images/provider/mtssm.jpg”,
“MIL”: 10,
“MXL”: 10
},
{
“OID”: 5,
“OCD”: “8”,
“OPE”: “RELAINCE”,
“IPH”: “Images/provider/reliancesm.jpg”,
“MIL”: 10,
“MXL”: 10
},
{
“OID”: 3,
“OCD”: “9”,
“OPE”: “VODAFONE”,
“IPH”: “Images/provider/vodafonesm.jpg”,
“MIL”: 10,
“MXL”: 10
}
]
}
}
读取JSON数据，并读取图像我已经尝试了代码，但它不是什么错在我code.How工作
ArrayList selectedNetwork = new ArrayList<>();
if(jsonStr != null){
JSONObject json = null;
SpinnerMenu spinnerData = new SpinnerMenu();
try {
JSONObject json = new JSONObject(jsonStr);
} catch (JSONException e1) {
e1.printStackTrace();
}
// Create the root JSONObject from the JSON string.
JSONObject jsonRootObject = null;
jsonRootObject = json.optJSONObject(“DS”);
//Get the instance of JSONArray that contains JSONObjects
JSONArray jsonArray = jsonRootObject.optJSONArray(“LST”);
//Iterate the jsonArray and print the info of JSONObjects
for(int i=0; i < jsonArray.length(); i++){
JSONObject jsonObject = null;
try {
jsonObject = jsonArray.getJSONObject(i);
} catch (JSONException e1) {
e1.printStackTrace();
}
String iph = null;
String oid = jsonObject.optString(“OID”).toString();
String ocd = jsonObject.optString(“OCD”).toString();
String opd = jsonObject.optString(“OPE”).toString();
String mil = jsonObject.optString(“MIL”).toString();
String mxl = jsonObject.optString(“MXL”).toString();
try {
iph = jsonObject.getString(“IPH”).toString();
} catch (JSONException e1) {
e1.printStackTrace();
}
String urldisplay = “http://192/TotalRecharge/”+iph;
Bitmap mIcon11 = null;
try {
InputStream in = new java.net.URL(urldisplay).openStream();
mIcon11 = BitmapFactory.decodeStream(in);
} catch (Exception e3) {
e3.printStackTrace();
}
spinnerData.setOid(oid);
spinnerData.setOcd(ocd);
spinnerData.setOpd(opd);
spinnerData.setMil(mil);
spinnerData.setMix(mxl);
spinnerData.setImage(mIcon11);
selectedNetwork.add(spinnerData);
}
让有问题JSON数据并将其保存在一个ArrayList中。在我的代码中，当我获取JSON数据并保存在一个ArrayList中但它返回null。我不知道如何解决这个问题。请帮助我
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你没有，甚至尝试将其保存在数组列表.. –
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ArrayList selectedNetwork = new ArrayList <>();它是局部变量还是实例，如果它是实例它应该工作。如果它是本地的，它不会在方法的一边工作。 –
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@ ImAtWar请看我的代码selectedNetwork.add(spinnerData);选择的网络是arraylist –