我是一个新的Andorid noob :) ...和我关于SO的第一个问题：）
所以我想做什么：
我使用按钮登录Facebook，我收到GraphUser，我调用一个服务，用他的Facebook数据在数据库中注册用户。 该寄存器在Asynk任务中完成。 我从服务和onPostExecute接收json我想用从json收到的数据库userId再次调用其他服务， 也可以在asynk任务中获取其他数据，然后填充视图。 这是我在doInBackground上获得asynk任务异常的地方。我做错了什么？
以下是对他的facebook数据进行注册的呼吁：
public class GetUserFacebookDataTask extends AsyncTask<Void, Void, String> {
Activity activity;
String fbNameParam;
String fbEmailParam;
String passwordParam = "";
String android_id = "";
String fbGengerParam;
public GetUserFacebookDataTask(String fbNameParam, String fbEmailParam,
final Activity current_activity, String android_id,
String fbGengerParam) {
this.activity = current_activity;
this.fbNameParam = fbNameParam;
this.fbEmailParam = fbEmailParam;
this.android_id = android_id;
this.fbGengerParam = fbGengerParam;
}
@Override
protected String doInBackground(Void... params) {
Log.d("GetUserFacebookDataTask doInBackground",
"GetUserFacebookDataTask");
Map<String, Object> paramsSend = new LinkedHashMap<String, Object>();
paramsSend.put("name", fbNameParam);
paramsSend.put("email", fbEmailParam);
paramsSend.put("password", "");
paramsSend.put("deviceToken", android_id);
paramsSend.put("deviceType", 2);
paramsSend.put("withFacebook", 1);
if (fbGengerParam.equals("male")) {
fbGengerParam = "m";
} else {
fbGengerParam = "f";
}
paramsSend.put("gender", fbGengerParam);
String stausHandler = null;
JsonObject response = null;
try {
response = WebServiceApi.PostToServiceLoginFacebook("login",
paramsSend);
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
if (response != null) {
JsonObject jsonData = ((JsonObject) response.get("userData"));
JsonElement userPhotoUrl = jsonData.get("userPhotoUrl");
JsonElement userPhoto = jsonData.get("userPhoto");
JsonElement userNewEmail = jsonData.get("userNewEmail");
JsonElement userAge = jsonData.get("userAge");
String userPhotoUrlf = "";
String userPhotof = "";
String userNewEmailf = "";
String userAgef = "";
if (userPhotoUrl.toString().equals("null")) {
userPhotoUrlf = "-";
}
if (userPhoto.toString().equals("null")) {
userPhotof = "-";
}
if (userNewEmail.toString().equals("null")) {
userNewEmailf = "-";
}
if (userAge.toString().equals("null")) {
userAgef = "-";
}
UserData userData = new UserData(userPhotoUrlf, jsonData.get(
"userHeightInterval").toString(), jsonData.get(
"userCity").toString(), userPhotof, jsonData.get(
"userPassword").toString(), jsonData.get("userStyle")
.toString(), jsonData.get("userEmail").toString(),
jsonData.get("userDateRegistered").toString(), jsonData
.get("userConfirmed").toString(), jsonData.get(
"userWithFacebook").toString(), jsonData.get(
"userID").toString(), jsonData
.get("userGender").toString(), jsonData.get(
"userWantsPushNotifications").toString(),
jsonData.get("userName").toString(), userNewEmailf,
userAgef, jsonData.get("userShape").toString());
UserData data = AppManager.getInstance().setUserData(userData);
if (userData != null) {
JsonElement status = response.get("status");
stausHandler = status.toString();
}
}
return stausHandler;
}
protected void onPostExecute(String status) {
Log.d("GetUserFacebookDataTask onPostExecute",
"GetUserFacebookDataTask onPostExecute");
StatusHandlerLoginFb(status.toString(), activity);
}
}
//收到json的状态处理程序
public void StatusHandlerLoginFb(String status, Activity currentActivity) {
if (status.equals("0")) {
Log.d("StatusHandlerLoginFb", "StatusHandlerLoginFb");
Intent intent = new Intent(currentActivity,
NavigationActivity.class);
currentActivity.startActivity(intent);
//new GetPhotoDataTaskFb(currentActivity).execute();
new GetPhotoDataTask(currentActivity).execute();
}
}
//其他任务
公共类GetPhotoDataTask扩展 的AsyncTask＆GT; {
Activity activity;
public GetPhotoDataTask(Activity activity) {
this.activity = activity;
}
ProgressDialog progressDialog;
@Override
protected void onPreExecute() {
Log.d("GetPhotoDataTask onPreExecute", "GetPhotoDataTask onPreExecute");
super.onPreExecute();
progressDialog = ProgressDialog.show(activity, "Preluare Date",
"Va rugam asteptati!");
}
@Override
protected List<PhotoData> doInBackground(Void... params) {
Log.d("GetPhotoDataTask doInBackground", "GetPhotoDataTask doInBackground");
MyStyleApi myStyleApi = new MyStyleApi();
List<PhotoData> photoData = null;
try {
photoData = myStyleApi.getPhotoDataWithDispatch();
} catch (JSONException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
List<String> photoStr = new ArrayList<String>();
for (int i = 0; i < photoData.size(); i++) {
photoStr.add(photoData.get(i).getPhotoURL());
}
String[] photoUrls = new String[photoStr.size()];
photoUrls = photoStr.toArray(photoUrls);
AppManager.getInstance().setphotoUrls(photoUrls);
List<PhotoData> photoDataS = AppManager.getInstance().setPhotoData(
photoData);
return photoData;
}
protected void onProgressUpdate(Integer... percent) {
progressDialog = ProgressDialog.show(activity, "Preluare Date",
"Va rugam asteptati!");
}
protected void onPostExecute(List<PhotoData> photoData) {
if (progressDialog != null && progressDialog.isShowing()) {
progressDialog.dismiss();
}
}
}
// getPhotoDataWithDispatch和另一种接收数据的方法
// get PhotoData with userId as param
public List<PhotoData> getPhotoDataWithDispatch() throws JSONException,
ClientProtocolException, IOException {
Log.d("getPhotoDataWithDispatch ", "getPhotoDataWithDispatch ");
UserData data = AppManager.getInstance().getUserData();
final String userID = data.getUserID();
Map<String, Object> params = new LinkedHashMap<String, Object>();
params.put("userID", userID);
JsonArray response = WebServiceApi.PostToServiceWithStringResponse(
"images/get_images_data", params);
if (response != null) {
List<PhotoData> photoDataList = new ArrayList<PhotoData>();
photoDataList = parseJsonArrayForFotoData(response);
return photoDataList;
}
return null;
}
// log cat
06-01 14:44:27.400: D/getUserDataFacebookLogin2(24790): getUserDataFacebookLogin2
06-01 14:44:27.410: D/GetUserFacebookDataTask doInBackground(24790): GetUserFacebookDataTask
06-01 14:44:27.410: D/PostToServiceLoginFacebook(24790): PostToServiceLoginFacebook
06-01 14:44:27.940: D/GetUserFacebookDataTask onPostExecute(24790): GetUserFacebookDataTask onPostExecute
06-01 14:44:27.940: D/StatusHandlerLoginFb(24790): StatusHandlerLoginFb
06-01 14:44:27.980: D/GetPhotoDataTask onPreExecute(24790): GetPhotoDataTask onPreExecute
06-01 14:44:28.040: D/GetPhotoDataTask doInBackground(24790): GetPhotoDataTask doInBackground
06-01 14:44:28.040: D/getPhotoDataWithDispatch(24790): getPhotoDataWithDispatch
06-01 14:44:28.070: D/memalloc(24790): /dev/pmem: Mapped buffer base:0x4ddae000 size:8110080 offset:7618560 fd:66
06-01 14:44:28.190: W/dalvikvm(24790): threadid=13: thread exiting with uncaught exception (group=0x40c541f8)
06-01 14:44:28.200: E/AndroidRuntime(24790): FATAL EXCEPTION: AsyncTask #3
06-01 14:44:28.200: E/AndroidRuntime(24790): java.lang.RuntimeException: An error occured while executing doInBackground()
06-01 14:44:28.200: E/AndroidRuntime(24790): at android.os.AsyncTask$3.done(AsyncTask.java:278)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
06-01 14:44:28.200: E/AndroidRuntime(24790): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.lang.Thread.run(Thread.java:856)
06-01 14:44:28.200: E/AndroidRuntime(24790): Caused by: java.lang.IllegalStateException: This is not a JSON Array.
06-01 14:44:28.200: E/AndroidRuntime(24790): at com.google.gson.JsonElement.getAsJsonArray(JsonElement.java:106)
06-01 14:44:28.200: E/AndroidRuntime(24790): at com.example.palashfashion.webservice.WebServiceApi.PostToServiceWithStringResponse(WebServiceApi.java:166)
06-01 14:44:28.200: E/AndroidRuntime(24790): at com.example.palashfashion.webservice.MyStyleApi.getPhotoDataWithDispatch(MyStyleApi.java:97)
06-01 14:44:28.200: E/AndroidRuntime(24790): at com.example.palashfashion.webservice.MyStyleApi$GetPhotoDataTask.doInBackground(MyStyleApi.java:877)
06-01 14:44:28.200: E/AndroidRuntime(24790): at com.example.palashfashion.webservice.MyStyleApi$GetPhotoDataTask.doInBackground(MyStyleApi.java:1)
06-01 14:44:28.200: E/AndroidRuntime(24790): at android.os.AsyncTask$2.call(AsyncTask.java:264)
06-01 14:44:28.200: E/AndroidRuntime(24790): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
06-01 14:44:28.200: E/AndroidRuntime(24790): ... 5 more
答案 0 :(得分：1)
它崩溃的原因是因为WebServiceApi.PostToServiceWithStringResponse没有返回Json数组