英文:
Android: sharedPreference in Fragment,not read data from Class
问题
i have this class for SharedPref work
package com.box.a100rados.Data;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import static android.content.Context.MODE_PRIVATE;
public class UserAccessSession {
private SharedPreferences sharedPref;
private Editor editor;
private static final String FILTER_RADIUS_DISTANCE = "FILTER_RADIUS_DISTANCE";
private static final String Name = "Name";
private static final String Photo = "Photo";
private static final String Rank = "Rank";
private static final String Sid = "Sid";
private static final String Ban = "Ban";
private static final String Latitude = "Latitude";
private static final String Longitude = "Longitude";
private static final String SHARED = "UserData";
private static UserAccessSession instance;
public static UserAccessSession getInstance(Context context) {
if(instance == null)
instance = new UserAccessSession(context);
return instance;
}
public UserAccessSession(Context context) {
sharedPref = context.getSharedPreferences(SHARED, MODE_PRIVATE);
editor = sharedPref.edit();
}
public void storeUserSession(UserSession session) {
editor.putString(Name, session.getUsername());
editor.putString(Photo, session.getPhoto_url());
editor.putInt(Rank, session.getUser_Rank());
editor.putString(Sid, session.getUser_id());
editor.putBoolean(Ban, session.getUser_Ban());
editor.putString(Latitude, session.getLatitude());
editor.putString(Longitude, session.getLongitude());
editor.apply();
}
public void clearUserSession() {
editor.putString(Name, null);
editor.putString(Photo, null);
editor.putInt(Rank, 1);
editor.putString(Sid, null);
editor.putBoolean(Ban, false);
editor.putString(Latitude, null);
editor.putString(Longitude, null);
editor.apply();
}
public UserSession getUserSession() {
UserSession session = new UserSession();
session.setUsername( sharedPref.getString(Name, null) );
session.setPhoto_url( sharedPref.getString(Photo, null) );
session.setUser_Rank( sharedPref.getInt(Rank, 1) );
session.setUser_id( sharedPref.getString(Sid, "") );
session.setUser_Ban( sharedPref.getBoolean(Ban, false) );
session.setLatitude(sharedPref.getString(Latitude,"59.946104"));
session.setLongitude(sharedPref.getString(Longitude,"30.306048"));
return session;
}
public void setFilterDistance(float radius) {
editor.putFloat(FILTER_RADIUS_DISTANCE, radius);
editor.commit();
}
public float getFilterDistance() {
return sharedPref.getFloat(FILTER_RADIUS_DISTANCE, 0);
}
}
How i call:
UserAccessSession tes = UserAccessSession.getInstance(getActivity().getApplicationContext());
UserSession test = tes.getUserSession();
But in `test.getLatitude()` or `test.getLongitude()` i have Null value.
The same sometimes happens in the main activity with `getUser_Rank` and `getUsername` or other values.
What have I done wrong and how can I fix it?
On the map, after re-opening, I get data from the SharedPref and the map camera moves where I need.
P.S I add data like this
UserSession userSession = new UserSession();
UserAccessSession session = UserAccessSession.getInstance(MainActivity.this);
String sid = User_SID;
userSession.setUsername(UserName);
userSession.setPhoto_url(Photo_URL);
userSession.setUser_Rank(Rank);
userSession.setUser_id(sid);
session.storeUserSession(userSession);
Coordinates i add like this:
userAccess = UserAccessSession.getInstance(MainActivity.this);
userSession = userAccess.getUserSession();
userSession.setLatitude(String.valueOf(location.getLatitude()));
userSession.setLongitude(String.valueOf(location.getLongitude()));
userAccess.storeUserSession(userSession);
> Thank you for help. I apologize for the possible repetition of the
> question. I speak English poorly and it’s hard to find information.
英文:
i have this class for SharedPref work
package com.box.a100rados.Data;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import static android.content.Context.MODE_PRIVATE;
public class UserAccessSession {
private SharedPreferences sharedPref;
private Editor editor;
private static final String FILTER_RADIUS_DISTANCE = "FILTER_RADIUS_DISTANCE";
private static final String Name = "Name";
private static final String Photo = "Photo";
private static final String Rank = "Rank";
private static final String Sid = "Sid";
private static final String Ban = "Ban";
private static final String Latitude = "Latitude";
private static final String Longitude = "Longitude";
private static final String SHARED = "UserData";
private static UserAccessSession instance;
public static UserAccessSession getInstance(Context context) {
if(instance == null)
instance = new UserAccessSession(context);
return instance;
}
public UserAccessSession(Context context) {
sharedPref = context.getSharedPreferences(SHARED, MODE_PRIVATE);
editor = sharedPref.edit();
}
public void storeUserSession(UserSession session) {
editor.putString(Name, session.getUsername());
editor.putString(Photo, session.getPhoto_url());
editor.putInt(Rank, session.getUser_Rank());
editor.putString(Sid, session.getUser_id());
editor.putBoolean(Ban, session.getUser_Ban());
editor.putString(Latitude, session.getLatitude());
editor.putString(Longitude, session.getLongitude());
editor.apply();
}
public void clearUserSession() {
editor.putString(Name, null);
editor.putString(Photo, null);
editor.putInt(Rank, 1);
editor.putString(Sid, null);
editor.putBoolean(Ban, false);
editor.putString(Latitude, null);
editor.putString(Longitude, null);
editor.apply();
}
public UserSession getUserSession() {
UserSession session = new UserSession();
session.setUsername( sharedPref.getString(Name, null) );
session.setPhoto_url( sharedPref.getString(Photo, null) );
session.setUser_Rank( sharedPref.getInt(Rank, 1) );
session.setUser_id( sharedPref.getString(Sid, "") );
session.setUser_Ban( sharedPref.getBoolean(Ban, false) );
session.setLatitude(sharedPref.getString(Latitude,"59.946104"));
session.setLongitude(sharedPref.getString(Longitude,"30.306048"));
return session;
}
public void setFilterDistance(float radius) {
editor.putFloat(FILTER_RADIUS_DISTANCE, radius);
editor.commit();
}
public float getFilterDistance() {
return sharedPref.getFloat(FILTER_RADIUS_DISTANCE, 0);
}
}
How i call:
UserAccessSession tes = UserAccessSession.getInstance(getActivity().getApplicationContext());
UserSession test = tes.getUserSession();
But in test.getLatitude() or test.getLongitude() i have Null value.
The same sometimes happens in the main activity with getUser_Rank and getUsername or other values.
What have I done wrong and how can I fix it?
On the map, after re-opening, I get data from the SharedPref and the map camera moves where I need.
P.S I add data like this
UserSession userSession = new UserSession();
UserAccessSession session = UserAccessSession.getInstance(MainActivity.this);
String sid = User_SID;
userSession.setUsername(UserName);
userSession.setPhoto_url(Photo_URL);
userSession.setUser_Rank(Rank);
userSession.setUser_id(sid);
session.storeUserSession(userSession);
Coordinates i add like this:
userAccess = UserAccessSession.getInstance(MainActivity.this);
userSession = userAccess.getUserSession();
userSession.setLatitude(String.valueOf(location.getLatitude()));
userSession.setLongitude(String.valueOf(location.getLongitude()));
userAccess.storeUserSession(userSession);
> Thank you for help. I apologize for the possible repetition of the
> question. I speak English poorly and it’s hard to find information.
答案1
得分: 1
我猜由于您从不同的来源访问，出现了问题。
请改用默认的共享偏好设置，它会使用单个文件进行存储，而不是使用不同的文件。
将这个代码：context.getSharedPreferences(SHARED, MODE_PRIVATE);
替换为这个代码：PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext());
英文:
I guess as you are accessing is from different sources, issues occurs.
Use the default shared preference instead, which uses a single file for storage instead different ones.
Replace this context.getSharedPreferences(SHARED, MODE_PRIVATE);
with this PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext());
答案2
得分: 0
将change set更改为get
public UserSession getUserSession() {
UserSession session = new UserSession();
session.getUsername(sharedPref.getString(Name, null));
session.getPhoto_url(sharedPref.getString(Photo, null));
session.getUser_Rank(sharedPref.getInt(Rank, 1));
session.getUser_id(sharedPref.getString(Sid, ""));
session.getUser_Ban(sharedPref.getBoolean(Ban, false));
session.getLatitude(sharedPref.getString(Latitude, "59.946104"));
session.getLongitude(sharedPref.getString(Longitude, "30.306048"));
return session;
}
英文:
change set to get
public UserSession getUserSession() {
UserSession session = new UserSession();
session.getUsername( sharedPref.getString(Name, null) );
session.getPhoto_url( sharedPref.getString(Photo, null) );
session.getUser_Rank( sharedPref.getInt(Rank, 1) );
session.getUser_id( sharedPref.getString(Sid, "") );
session.getUser_Ban( sharedPref.getBoolean(Ban, false) );
session.getLatitude(sharedPref.getString(Latitude,"59.946104"));
session.getLongitude(sharedPref.getString(Longitude,"30.306048"));
return session;
}
答案3
得分: 0
我很愚蠢。
userAccess = UserAccessSession.getInstance(MainActivity.this);
userSession = userAccess.getUserSession();
userSession.setLatitude(String.valueOf(location.getLatitude()));
userSession.setLongitude(String.valueOf(location.getLongitude()));
userAccess.storeUserSession(userSession);
这个调用清除了现有数据。
将坐标传输到一个单独的方法中，一切正常运行。
英文:
I'm stupid.
userAccess = UserAccessSession.getInstance(MainActivity.this);
userSession = userAccess.getUserSession();
userSession.setLatitude(String.valueOf(location.getLatitude()));
userSession.setLongitude(String.valueOf(location.getLongitude()));
userAccess.storeUserSession(userSession);
This call cleared existing data.
Transferred coordinates to a separate method, everything worked.
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