Android的 - 循环J AsyncHttpClient返回响应onFinish或的onSuccess [英] Android - loopJ AsyncHttpClient return response onFinish or onSuccess
问题描述
我要寻找一种方式来回报我得到了循环J AsyncHttpClient onFinish或的onSuccess或onFailure响应。截至目前我有这块code:
I am looking for a way to return the response I get in loopJ AsyncHttpClient onFinish or onSuccess or onFailure. As of now I have this piece of code:
**jsonParse.java file**
public class jsonParse {
static JSONObject jObj = null;
static String jsonString = "";
AsyncHttpClient client;
public JSONObject getJSONObj() {
RequestParams params;
params = new RequestParams();
params.add("username", "user");
params.add("password", "password");
client = new AsyncHttpClient();
client.post("http://example.com", params, new TextHttpResponseHandler() {
@Override
public void onSuccess(int i, Header[] headers, String response) {
jsonString = response;
Log.d("onSuccess: ", jsonString);
}
@Override
public void onFailure(int statusCode, Header[] headers, String response, Throwable e) {
if (statusCode == 401) {
jsonString = response;
Log.d("onFailure: ", jsonString);
}
}
});
try {
jObj = new JSONObject(jsonString);
} catch (JSONException e) {
Log.e("Exception", "JSONException " + e.toString());
}
return jObj;
}
}
当我调用code:
JSONParser jsonParser = new JSONParser();
jsonParser.getJSONFromUrl();
我得到的 JSONException 之前的onSuccess或onFailure方法完成的HTTP POST。
I get the JSONException before onSuccess or onFailure method finishes the http post.
我已经注意到,在第一次调用: Log.e(异常,JSONException+ e.toString());是越来越记录,然后Log.d(的onSuccess:,jsonString);日志的值,因为它们是在同步状态
I have noticed that, on the first invoke: Log.e("Exception", "JSONException " + e.toString()); is getting logged and then Log.d("onSuccess: ", jsonString); logs the value as they are in the sync state.
在第二个调用: jObj =新的JSONObject(jsonString);得到成功执行,我得到期望的回报值的方法,因为这时的onSuccess方法将已分配的值赋予变量jsonString。
On the second invoke: jObj = new JSONObject(jsonString); gets executed successfully and I get desired return value for the method, because by that time onSuccess method would have already assigned the value to the variable jsonString.
现在什么,我究竟在寻找一种方法来prevent premature 从方法返回jObj的。
Now what I am exactly looking for is a way to prevent premature return of jObj from the method.
反正是有使该方法,getJSONObj,等待完成AsyncHttpClient任务,分配变量到jsonString,创建的JSONObject并返回它?
在此先感谢! 干杯!
推荐答案
使用的接口。这样,您就可以创建自己的回调,其方法可以从的onSuccess或onFailure被调用。
Use an interface. This way you can create your own callback whose methods can be called from onSuccess or onFailure.
public interface OnJSONResponseCallback {
public void onJSONResponse(boolean success, JSONObject response);
}
public JSONObject getJSONObj(OnJSONResponseCallback callback) {
...
@Override
public void onSuccess(int i, Header[] headers, String response) {
try {
jObj = new JSONObject(response);
callback.onJSONResponse(true, jObj);
} catch (JSONException e) {
Log.e("Exception", "JSONException " + e.toString());
}
}
@Override
public void onFailure(int statusCode, Header[] headers, String response, Throwable e) {
try {
jObj = new JSONObject(response);
callback.onJSONResponse(false, jObj);
} catch (JSONException e) {
Log.e("Exception", "JSONException " + e.toString());
}
}
}
和调用它:
jsonParse.getJSONObj(new OnJSONResponseCallback(){
@Override
public void onJSONResponse(boolean success, JSONObject response){
//do something with the JSON
}
});
这篇关于Android的 - 循环J AsyncHttpClient返回响应onFinish或的onSuccess的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!