SharedPreferences doesn't store values after closing app
I tried to store some values in ArrayList by SharedPreferences by the following code:
public static String jsonSavePracticeResult;
private SharedPreferences sharedPreferencesSaveResults = PreferenceManager.getDefaultSharedPreferences(this);
public void savePracticeResults(ArrayList<KeepPracticeResultsModel>
arrayListPracticeResult) {
Gson gson = new Gson();
jsonSavePracticeResult = gson.toJson(arrayListPracticeResult);
SharedPreferences.Editor editorSharedPreferencesSaveResults;
editorSharedPreferencesSaveResults =
sharedPreferencesSaveResults.edit();
editorSharedPreferencesSaveResults.clear();
editorSharedPreferencesSaveResults
.putString("donePracticeList",jsonSavePracticeResult);
editorSharedPreferencesSaveResults.apply();
}
After that, I retrieved values by the following code:
public ArrayList<KeepPracticeResultsModel> getSavedPracticeResults(){
jsonSavePracticeResult = sharedPreferencesSaveResults.getString("donePracticeList", jsonSavePracticeResult);
Gson gson = new Gson();
Type type = new TypeToken<ArrayList<KeepPracticeResultsModel>>() {}.getType();
keepPracticeResultsModels = gson.fromJson(jsonSavePracticeResult, type);
return keepPracticeResultsModels;
}
When app is open, it works fine, but when you try to close app from recent apps, and after that you open app again, SharedPreferences values are lost and jsonSavePracticeResult is Null!
Also I called getSavedPracticeResults() in onResume() and onPause().
I did all of the solutions that existed in StackOverflow but it's happening again!
android sharedpreferences asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
add a comment |
I tried to store some values in ArrayList by SharedPreferences by the following code:
public static String jsonSavePracticeResult;
private SharedPreferences sharedPreferencesSaveResults = PreferenceManager.getDefaultSharedPreferences(this);
public void savePracticeResults(ArrayList<KeepPracticeResultsModel>
arrayListPracticeResult) {
Gson gson = new Gson();
jsonSavePracticeResult = gson.toJson(arrayListPracticeResult);
SharedPreferences.Editor editorSharedPreferencesSaveResults;
editorSharedPreferencesSaveResults =
sharedPreferencesSaveResults.edit();
editorSharedPreferencesSaveResults.clear();
editorSharedPreferencesSaveResults
.putString("donePracticeList",jsonSavePracticeResult);
editorSharedPreferencesSaveResults.apply();
}
After that, I retrieved values by the following code:
public ArrayList<KeepPracticeResultsModel> getSavedPracticeResults(){
jsonSavePracticeResult = sharedPreferencesSaveResults.getString("donePracticeList", jsonSavePracticeResult);
Gson gson = new Gson();
Type type = new TypeToken<ArrayList<KeepPracticeResultsModel>>() {}.getType();
keepPracticeResultsModels = gson.fromJson(jsonSavePracticeResult, type);
return keepPracticeResultsModels;
}
When app is open, it works fine, but when you try to close app from recent apps, and after that you open app again, SharedPreferences values are lost and jsonSavePracticeResult is Null!
Also I called getSavedPracticeResults() in onResume() and onPause().
I did all of the solutions that existed in StackOverflow but it's happening again!
android sharedpreferences asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
post some more code specially related tosharedPreferencesSaveResults
– Omer
Dec 28 '18 at 20:01
@Omer I addedsharedPreferencesSaveResultsin the code.
– mhadikz
Dec 29 '18 at 8:44
@RichardLeMesurier No, because of I debugged app when is running, that method stored all of values and you can retrieve those by returnkeepPracticeResultsModels, but after closing it from recent apps, if you enter app againjsonSavePracticeResultis null
– mhadikz
Dec 29 '18 at 9:51
Did you check this ? journaldev.com/9412/android-shared-preferences-example-tutorial I use it before and works like charm! :)
– Mohammadreza Khatami
Dec 29 '18 at 18:47
add a comment |
I tried to store some values in ArrayList by SharedPreferences by the following code:
public static String jsonSavePracticeResult;
private SharedPreferences sharedPreferencesSaveResults = PreferenceManager.getDefaultSharedPreferences(this);
public void savePracticeResults(ArrayList<KeepPracticeResultsModel>
arrayListPracticeResult) {
Gson gson = new Gson();
jsonSavePracticeResult = gson.toJson(arrayListPracticeResult);
SharedPreferences.Editor editorSharedPreferencesSaveResults;
editorSharedPreferencesSaveResults =
sharedPreferencesSaveResults.edit();
editorSharedPreferencesSaveResults.clear();
editorSharedPreferencesSaveResults
.putString("donePracticeList",jsonSavePracticeResult);
editorSharedPreferencesSaveResults.apply();
}
After that, I retrieved values by the following code:
public ArrayList<KeepPracticeResultsModel> getSavedPracticeResults(){
jsonSavePracticeResult = sharedPreferencesSaveResults.getString("donePracticeList", jsonSavePracticeResult);
Gson gson = new Gson();
Type type = new TypeToken<ArrayList<KeepPracticeResultsModel>>() {}.getType();
keepPracticeResultsModels = gson.fromJson(jsonSavePracticeResult, type);
return keepPracticeResultsModels;
}
When app is open, it works fine, but when you try to close app from recent apps, and after that you open app again, SharedPreferences values are lost and jsonSavePracticeResult is Null!
Also I called getSavedPracticeResults() in onResume() and onPause().
I did all of the solutions that existed in StackOverflow but it's happening again!
android sharedpreferences asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
I tried to store some values in ArrayList by SharedPreferences by the following code:
public static String jsonSavePracticeResult;
private SharedPreferences sharedPreferencesSaveResults = PreferenceManager.getDefaultSharedPreferences(this);
public void savePracticeResults(ArrayList<KeepPracticeResultsModel>
arrayListPracticeResult) {
Gson gson = new Gson();
jsonSavePracticeResult = gson.toJson(arrayListPracticeResult);
SharedPreferences.Editor editorSharedPreferencesSaveResults;
editorSharedPreferencesSaveResults =
sharedPreferencesSaveResults.edit();
editorSharedPreferencesSaveResults.clear();
editorSharedPreferencesSaveResults
.putString("donePracticeList",jsonSavePracticeResult);
editorSharedPreferencesSaveResults.apply();
}
After that, I retrieved values by the following code:
public ArrayList<KeepPracticeResultsModel> getSavedPracticeResults(){
jsonSavePracticeResult = sharedPreferencesSaveResults.getString("donePracticeList", jsonSavePracticeResult);
Gson gson = new Gson();
Type type = new TypeToken<ArrayList<KeepPracticeResultsModel>>() {}.getType();
keepPracticeResultsModels = gson.fromJson(jsonSavePracticeResult, type);
return keepPracticeResultsModels;
}
When app is open, it works fine, but when you try to close app from recent apps, and after that you open app again, SharedPreferences values are lost and jsonSavePracticeResult is Null!
Also I called getSavedPracticeResults() in onResume() and onPause().
I did all of the solutions that existed in StackOverflow but it's happening again!
android sharedpreferences android sharedpreferences asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
edited Dec 29 '18 at 8:42
mhadikz
asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
asked Dec 28 '18 at 19:50
mhadikzmhadikz
615
615
post some more code specially related tosharedPreferencesSaveResults
– Omer
Dec 28 '18 at 20:01
@Omer I addedsharedPreferencesSaveResultsin the code.
– mhadikz
Dec 29 '18 at 8:44
@RichardLeMesurier No, because of I debugged app when is running, that method stored all of values and you can retrieve those by returnkeepPracticeResultsModels, but after closing it from recent apps, if you enter app againjsonSavePracticeResultis null
– mhadikz
Dec 29 '18 at 9:51
Did you check this ? journaldev.com/9412/android-shared-preferences-example-tutorial I use it before and works like charm! :)
– Mohammadreza Khatami
Dec 29 '18 at 18:47
add a comment |
post some more code specially related tosharedPreferencesSaveResults
– Omer
Dec 28 '18 at 20:01
@Omer I addedsharedPreferencesSaveResultsin the code.
– mhadikz
Dec 29 '18 at 8:44
@RichardLeMesurier No, because of I debugged app when is running, that method stored all of values and you can retrieve those by returnkeepPracticeResultsModels, but after closing it from recent apps, if you enter app againjsonSavePracticeResultis null
– mhadikz
Dec 29 '18 at 9:51
Did you check this ? journaldev.com/9412/android-shared-preferences-example-tutorial I use it before and works like charm! :)
– Mohammadreza Khatami
Dec 29 '18 at 18:47
post some more code specially related to
sharedPreferencesSaveResults– Omer
Dec 28 '18 at 20:01
post some more code specially related to
sharedPreferencesSaveResults– Omer
Dec 28 '18 at 20:01
@Omer I added
sharedPreferencesSaveResults in the code.– mhadikz
Dec 29 '18 at 8:44
@Omer I added
sharedPreferencesSaveResults in the code.– mhadikz
Dec 29 '18 at 8:44
@RichardLeMesurier No, because of I debugged app when is running, that method stored all of values and you can retrieve those by return
keepPracticeResultsModels, but after closing it from recent apps, if you enter app again jsonSavePracticeResult is null– mhadikz
Dec 29 '18 at 9:51
@RichardLeMesurier No, because of I debugged app when is running, that method stored all of values and you can retrieve those by return
keepPracticeResultsModels, but after closing it from recent apps, if you enter app again jsonSavePracticeResult is null– mhadikz
Dec 29 '18 at 9:51
Did you check this ? journaldev.com/9412/android-shared-preferences-example-tutorial I use it before and works like charm! :)
– Mohammadreza Khatami
Dec 29 '18 at 18:47
Did you check this ? journaldev.com/9412/android-shared-preferences-example-tutorial I use it before and works like charm! :)
– Mohammadreza Khatami
Dec 29 '18 at 18:47
add a comment |
1 Answer
1
active
oldest
votes
Have you tried using .commit() instead?
Change
editorSharedPreferencesSaveResults.apply();
to
editorSharedPreferencesSaveResults.commit();
The reason being that .apply() writes in the background, asynchronously; wherever as .commit() will write right away. So, if you're closing your app, you want to quickly save these changes before the app is closed.
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
Yes, I tested it actually before sent this post, it didn't work
– mhadikz
Dec 29 '18 at 8:22
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Have you tried using .commit() instead?
Change
editorSharedPreferencesSaveResults.apply();
to
editorSharedPreferencesSaveResults.commit();
The reason being that .apply() writes in the background, asynchronously; wherever as .commit() will write right away. So, if you're closing your app, you want to quickly save these changes before the app is closed.
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
Yes, I tested it actually before sent this post, it didn't work
– mhadikz
Dec 29 '18 at 8:22
add a comment |
Have you tried using .commit() instead?
Change
editorSharedPreferencesSaveResults.apply();
to
editorSharedPreferencesSaveResults.commit();
The reason being that .apply() writes in the background, asynchronously; wherever as .commit() will write right away. So, if you're closing your app, you want to quickly save these changes before the app is closed.
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
Yes, I tested it actually before sent this post, it didn't work
– mhadikz
Dec 29 '18 at 8:22
add a comment |
Have you tried using .commit() instead?
Change
editorSharedPreferencesSaveResults.apply();
to
editorSharedPreferencesSaveResults.commit();
The reason being that .apply() writes in the background, asynchronously; wherever as .commit() will write right away. So, if you're closing your app, you want to quickly save these changes before the app is closed.
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
Have you tried using .commit() instead?
Change
editorSharedPreferencesSaveResults.apply();
to
editorSharedPreferencesSaveResults.commit();
The reason being that .apply() writes in the background, asynchronously; wherever as .commit() will write right away. So, if you're closing your app, you want to quickly save these changes before the app is closed.
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
answered Dec 28 '18 at 20:02
Advice-DogAdvice-Dog
1,54421231
1,54421231
Yes, I tested it actually before sent this post, it didn't work
– mhadikz
Dec 29 '18 at 8:22
add a comment |
Yes, I tested it actually before sent this post, it didn't work
– mhadikz
Dec 29 '18 at 8:22
Yes, I tested it actually before sent this post, it didn't work
– mhadikz
Dec 29 '18 at 8:22
Yes, I tested it actually before sent this post, it didn't work
– mhadikz
Dec 29 '18 at 8:22
add a comment |
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post some more code specially related to
sharedPreferencesSaveResults– Omer
Dec 28 '18 at 20:01
@Omer I added
sharedPreferencesSaveResultsin the code.– mhadikz
Dec 29 '18 at 8:44
@RichardLeMesurier No, because of I debugged app when is running, that method stored all of values and you can retrieve those by return
keepPracticeResultsModels, but after closing it from recent apps, if you enter app againjsonSavePracticeResultis null– mhadikz
Dec 29 '18 at 9:51
Did you check this ? journaldev.com/9412/android-shared-preferences-example-tutorial I use it before and works like charm! :)
– Mohammadreza Khatami
Dec 29 '18 at 18:47