我一直在搜索Google并尝试不同的方法来尝试让它工作,但我似乎无法获得密钥 - >要从内存中删除的值。我想要实现的是,如果服务器的某些事情发生,例如服务器重新启动,那么当你向服务器发出请求时,它将作为网络错误返回。如果我停止服务器,发出请求它会很好。但是,如果我启动服务器,发出请求并收到良好的结果,而不是杀死服务器并返回,它仍然保留以前的结果,所以它没有看到问题。希望足够清楚。我的代码的一个例子是:
JSONObject json;
json = MF.geoLocal(address, city, state, postal);
try {
if(json == null || json.isNull("status")){
PopIt(getString(R.string.alert_network_error));
} else {
if(json.getString("status").equals("OK")){
address = json.getString("address");
city = json.getString("city");
county = json.getString("county");
state = json.getString("state");
postal = json.getString("postal");
lat = json.getString("latitude");
lon = json.getString("longitude");
db.open();
String method = (db.isDatabaseSet())? "update" : "insert";
db.addUser(method, email, fname, mname, lname, address, apt, city, county, state, postal, lat, lon, phone, mobile, dob, gender);
db.close();
}
}
}
geoLocat的类是:
public JSONObject geoLocal(String address, String city, String state, String postal){
JSONObject json = null;
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("address", address));
params.add(new BasicNameValuePair("city", city));
params.add(new BasicNameValuePair("state", state));
params.add(new BasicNameValuePair("postal", postal));
json = jsonParser.getJSONFromUrl(geoURL, params);
return json;
}
解析这些请求的类是:
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url, List<NameValuePair> params) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
Log.e("JSON", json);
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
任何帮助都会受到赞赏,这已经让我的脑子好几天了。
答案 0 :(得分:0)
好吧,如果有其他人遇到同样的问题,请转到以下
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
到
InputStream is = null;
JSONObject jObj = null;
String json = "";
将问题解决到信息未保存到内存中的位置。
答案 1 :(得分:0)
例如:
InputStream is = null;
JSONObject jObj = null;
String json = null;