我有一个像这样的json数组
[
{
"id": "11",
"notes": "edgbdefgbfffffffffffffffffffff",
"start_date": "2015-04-28",
"end_date": "2015-04-29",
"user_id": "66",
"status": "1",
"from_country": "Armenia",
"from_state": "Aragatsotn",
"from_city": "Aragatsotn",
"from_street": "Avan Road",
"from_apt": "",
"from_longitude": "44.174652099609375",
"from_latitude": "40.35805621890491",
"from_place_id": "ChIJq1tZBgOJakAR79py0zHBCVo",
"to_country": "Armenia",
"to_state": "Yerevan",
"to_city": "Yerevan",
"to_street": "Tsitsernakaberd Highway",
"to_apt": "",
"to_longitude": "44.487762451171875",
"to_latitude": "40.18097176388719",
"to_place_id": "ChIJJcq4GKm9akARQboxrm84dHY",
"creator_first_name": "Poxos1s",
"creator_last_name": "Poxosyan",
"creator_paypal_email": null,
"creator_credit_card": null,
"creator_phone": "374 99 99 99 99",
"creator_email": "poxos@gmail.com",
"creator_file_id": "163",
"from_country_short": "AM",
"to_country_short": "AM"
},
{
"id": "10",
"notes": "rtyerty",
"start_date": "2015-04-24",
"end_date": "2015-04-25",
"user_id": "61",
"status": "1",
"from_country": "Armenia",
"from_state": "Aragatsotn",
"from_city": "Aragatsotn",
"from_street": "H20",
"from_apt": "",
"from_longitude": "44.219970703125",
"from_latitude": "40.46157664398329",
"from_place_id": "ChIJ23CVRId-akARPsgD3Zt77bI",
"to_country": "Armenia",
"to_state": "Armavir",
"to_city": "Armavir",
"to_street": "M-3 M-3",
"to_apt": "",
"to_longitude": "44.3243408203125",
"to_latitude": "40.204050425113294",
"to_place_id": "EhBNLTMgTS0zLCBBcm1lbmlh",
"creator_first_name": "Hovsep",
"creator_last_name": "Markosyan",
"creator_paypal_email": null,
"creator_credit_card": null,
"creator_phone": "077310128",
"creator_email": "markosyanhoso@mail.ru",
"creator_file_id": "263",
"from_country_short": "AM",
"to_country_short": "AM"
},
{
"id": "9",
"notes": "ghjgh",
"start_date": "2015-04-22",
"end_date": "2015-04-24",
"user_id": "66",
"status": "1",
"from_country": "Armenia",
"from_state": "Aragatsotn",
"from_city": "Aragatsotn",
"from_street": "Factory Street",
"from_apt": "",
"from_longitude": "44.32708740234375",
"from_latitude": "40.33188951824973",
"from_place_id": "ChIJF--_mNmEakARLtYmVplqp7c",
"to_country": "Armenia",
"to_state": "Armavir",
"to_city": "Armavir",
"to_street": "Unnamed Road",
"to_apt": "",
"to_longitude": "44.263916015625",
"to_latitude": "40.19041398364302",
"to_place_id": "ChIJ01kFw2eTakARVNQCrG2iewg",
"creator_first_name": "Poxos1s",
"creator_last_name": "Poxosyan",
"creator_paypal_email": null,
"creator_credit_card": null,
"creator_phone": "374 99 99 99 99",
"creator_email": "poxos@gmail.com",
"creator_file_id": "163",
"from_country_short": "AM",
"to_country_short": "AM"
},
{
"id": "3",
"notes": "yky",
"start_date": "2015-04-23",
"end_date": "2015-04-30",
"user_id": "60",
"status": "1",
"from_country": "Armenia",
"from_state": "Yerevan",
"from_city": "Yerevan",
"from_street": "3 Agatangeghos Street",
"from_apt": "",
"from_longitude": "44.510765075683594",
"from_latitude": "40.170872380088376",
"from_place_id": "ChIJ58PEYFi8akARtejTCFF4jOk",
"to_country": "Armenia",
"to_state": "Yerevan",
"to_city": "Yerevan",
"to_street": "Kond Street",
"to_apt": "",
"to_longitude": "44.502010345458984",
"to_latitude": "40.18215211323218",
"to_place_id": "ChIJa_8u6AG9akARK2k5uMHdgJ8",
"creator_first_name": "Miqo",
"creator_last_name": "Dallaqyan",
"creator_paypal_email": "ssdfsd@sdfsdf.sda",
"creator_credit_card": "1234 5678 9123 4564",
"creator_phone": "12345677",
"creator_email": "aaa@aa.aa",
"creator_file_id": "247",
"from_country_short": "AM",
"to_country_short": "AM"
}
.......................
]
我以这种方式循环遍历数组：
try {
JSONArray array = new JSONArray(roadsresponse);
Log.d("roadsresponse",roadsresponse);
for (int i = 0; i < array.length(); i++) {
JSONObject row = array.getJSONObject(i);
roadstolongitude = row.getString("to_longitude");
roadstolatitude = row.getString("to_latitude");
roadsfirstname = row.getString("creator_first_name");
roadslastname = row.getString("creator_last_name");
roadsstartdate = row.getString("start_date");
roadsenddate = row.getString("end_date");
roadsfromplace = row.getString("from_country");
roadstoplace = row.getString("to_country");
roadsfromcity = row.getString("from_city");
roadstocity = row.getString("to_city");
roadsnotes = row.getString("notes");
roadsfromlatitude = row.getString("from_latitude");
roadsfromlongitude = row.getString("from_longitude");
double tolongdouble = Double.parseDouble(roadstolongitude);
double tolatdouble = Double.parseDouble(roadstolatitude);
MarkerOptions options = new MarkerOptions();
options.position(new LatLng(tolatdouble, tolongdouble));
options.title("roads");
options.rotation(1);
options.icon(BitmapDescriptorFactory.fromResource(R.drawable.roads));
options.snippet(roadsfirstname + "/" + roadslastname + "/" + roadsstartdate + "/" + roadsenddate + "/" + roadsfromplace + "/" + roadsfromcity + "/" + roadstoplace + "/" + roadstocity + "/" + roadsnotes + "/" + roadsfromlongitude + "/" + roadsfromlatitude + "/" + roadstolongitude + "/" + roadstolatitude);
map2.addMarker(options);
Log.d("toplace",roadstoplace);
您可以看到我正在打印roadstoplace，并且我正在接收此类打印
05-11 11:37:02.937 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.938 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.940 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.942 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.944 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.945 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.947 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.949 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.951 13832-13832/com.paqqy D/toplace﹕ Armenia
05-11 11:37:02.953 13832-13832/com.paqqy D/toplace﹕ null
05-11 11:37:02.955 13832-13832/com.paqqy D/toplace﹕ null
首先，虽然它很正常，但阵列中应该有11个元素，但是当我手动开始计算时，我得指出我有9个元素，最后2个NULL个元素来了从哪儿....那么关于它的问题是什么？我在循环中做错了吗？我应该收到9个元素而不是11个，但我确实收到11个元素，最有趣的是最后2个元素是null ....请帮助我！