How can I have a separate preference for each checkbox saving whether it was clicked or not? I have code that works for one and I can repeat it to make it work for each one but I feel I should be able to change it so I don't have so much repeat code.
In onCreate
CheckBox checkbox = (CheckBox) findViewById(R.id.description);
CheckBox checkbox1 = (CheckBox) findViewById(R.id.description1);
SharedPreferences sharedPref = getSharedPreferences("mypref", MODE_PRIVATE);
SharedPreferences sharedPref1 = getSharedPreferences("mypref1", MODE_PRIVATE);
boolean checked = sharedPref.getBoolean("checked", false);
boolean checked1 = sharedPref1.getBoolean("checked1", false);
checkbox.setChecked(checked);
checkbox1.setChecked(checked1);
My click handler
public void handleCheckBoxClick(View view) {
CheckBox tmpChkBox = (CheckBox) findViewById(view.getId());
if(tmpChkBox.isChecked())
{
tmpChkBox.setBackgroundColor(Color.BLUE);
SharedPreferences sharedPref = getSharedPreferences("mypref", MODE_PRIVATE);
sharedPref.edit().putBoolean("checked", true).commit();
}
else
{
tmpChkBox.setBackgroundColor(Color.RED);
SharedPreferences sharedPref = getSharedPreferences("mypref", MODE_PRIVATE);
sharedPref.edit().putBoolean("checked", false).commit();
}
}
I got it to work by making another click handler and referring to that which you see in the onCreate where I make a whole separate preference. Is there a way to make one preference that can be used on each check box?
Related
I have a textview that when user clicks it, I want it to be invisible. But I want it to stay invisible, even after user has reloaded the app, using "sharedpreferences". How to get shared preferences working and then recalled correctly?
This is my code for storing the preference when user clicks the textview:
textView.setVisibility(View.INVISIBLE);
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
SharedPreferences.Editor editor = pref.edit();
editor.putBoolean("was_clicked", true);
editor.commit(); // commit changes
So I understand this will store a true/false boolean in shared preferences called" was_clicked".
But now how do I have it checked for "true" in the onCreate method of the activity and then have it set TextView to view.INVISIBLE if was_clicked = true?
Check out this article. But to answer your question specifically
if (getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE).getBoolean("was_clicked", false))
textView.setVisibility(View.INVISIBLE);
You can check the value using this method:
SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
boolean wasClicked = pref.getBoolean("was_clicked",false);
if (wasClicked){
textView.setVisibility(View.INVISIBLE);
}else {
textView.setVisibility(View.VISIBLE);
}
In your onCreate method you should create preferences and read from them like this:
static final String PREFERENCES_NAME = "MyPref";
static final String WAS_CLICKED_NAME = "was_clicked";
#Override
void onCreate()
{
SharedPreferences preferences = getApplicationContext().getSharedPreferences(PREFERENCES_NAME, MODE_PRIVATE);
boolean invisible = preferences.getBoolean(WAS_CLICKED_NAME, false); // 2nd argument is the default value
if (invisible)
{
textView.setVisibility(View.INVISIBLE);
}
}
getBoolean method will read value of "was_clicked" preference. 2nd argument will be returned if you haven't yet put value "was_clicked" to shared preferences, so you can return false if you haven't put this preference to show the textView.
appPrefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
Also tried by creating a new prefs file by name, on both the activity and fragment, still nothing.
boolean firstRun = appPrefs.getBoolean("firstrun", true);
if (firstRun) {
rotate_hint.setVisibility(View.VISIBLE);
} else {
rotate_hint.setVisibility(View.GONE);
}
always, always, returns true.
public void hide_list_hint() {
if (rotate_hint.getVisibility() == View.VISIBLE) {
rotate_hint.setVisibility(View.GONE);
Editor prefsEditor;
prefsEditor = appPrefs.edit();
prefsEditor.putBoolean("firstrun", true); <- facepalm
prefsEditor.commit();
}
}
I dont know of a way to perhaps try this in the fragments onCreate or onActivityCreated because i need access to the 'rotate_hint' view, which comes from the inflated view in the onCreateView.
You put true, if null you get true. Of course it will return true. Change this line;
prefsEditor.putBoolean("firstrun", false);
i should note to your code where :1-
appPrefs.getBoolean("firstrun", true);
if you not save "fristrun" key the defult value will be true i Guess it should be false2-
if (rotate_hint.getVisibility() == View.VISIBLE) {}
you should save your state of Visibility true in this if and on else save false for this state (for better Readability)
i use this saving and restoring method on my fragment as :
for restoring One CheckBox :
public void onViewCreated(View view, Bundle savedInstanceState) {
SharedPreferences Setting = getSherlockActivity()
.getSharedPreferences(PREFERENCENAME, 0);
boolean Check=Setting.getBoolean(
"NotifyChange", false);
CheckBox Changebox = (CheckBox) view.findViewById(
R.id.checkbox);
Changebox.setChecked(Check);
}
and for saving state of CheckBox :
public void onDestroyView() {
// TODO Auto-generated method stub
super.onDestroyView();
CheckBox Changebox = (CheckBox) getView().findViewById(
R.id.checkbox);
SharedPreferences Setting = getSherlockActivity()
.getSharedPreferences(PREFERENCENAME, 0);
Editor editor = Setting.edit();
editor.putBoolean("NotifyChange",Changebox.isChecked);
editor.commit();
hope to be useful :)
Is it possible to use sharedpreferences with a ListAdapter ?
In my main activity I would like to set a flag that can be picked up in my listadapter
Is this possbile ?
Regards
foud a solution meanwhile
Hello,
I've found it ...
in the main activity onCreate
final String PREF_FILE_NAME = "PrefFile";
SharedPreferences preferences = getSharedPreferences(PREF_FILE_NAME,MODE_PRIVATE);
Editor editor = preferences.edit();
editor.putBoolean("refresh", false);
editor.commit();
when 'refresh' is pushed
// Set "refresh" to true
SharedPreferences.Editor editor = getSharedPreferences("PrefFile", MODE_PRIVATE).edit();
editor.putBoolean("refresh", true);
editor.commit();
and in the listAdapter on GetView(own created, extend on SimpleAdapter)
// Get parent context
Context contextParent = parent.getContext();
// Get shared preferences
SharedPreferences sharedPreferences = contextParent.getSharedPreferences("PrefFile", context.MODE_PRIVATE);
// Refresh ?
if (sharedPreferences.getBoolean("refresh", false) == true) {
...
}
i am creating number of check boxes dynamically and i have done some logic to select only one at a time . now i just want to save the state of the selected checkbox and when i come back from the next screen it should be selected. below i have given the code for checkbox
cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
if (hash.size() > 0) {
hash.get("1").setChecked(false);
}
hash.put("1", buttonView);
selAnyone = true;
} else {
hash.clear();
selAnyone = false;
}
Edit:
Whenever you are navigating to the current activity to the next activity , save the id of selected check box like this
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("checkboxid","1");
editor.commit();
or simply send it via Intent
yourintent.putExtra("checkboxid","1"); // selected checkbox id
And then
If you are using the intent instead of sharedpreferences put the same extra when navigating back to the current screen.
First using SharedPreferences:
In the onCreate of your Activity check whether pref contains checkbox id or not
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
String name = preferences.getString("Name",null); // if the preference doesn't exist it returns null
if(name!=null)
{
int checkedid=Integer.parseInt(name);
checkbox[checkid].setChecked(true);
}
Same logic follows for the intent extra also check for checkboxid , if it doesn't exist don't check anything, if it exists check the checkbox with assoicated id
Use SharedPreferences
Example:
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("checkboxid","1");
editor.commit();
Get like this
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
String name = preferences.getString("Name","checkboxid");
In onResume of my PrefereneActivity, I have the following code :
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
boolean isEnabled = sp.getBoolean("check_enabled", false);
The value of isEnabled is false, however, in the UI the checkbox is still shown as selected. Why is it so?
Do you call mCheckBox.setChecked(isEnabled); in onResume() of your activity?
mCheckBox is your checkbox.
I think you are not using Editor.commit(); after putting the values..
Editor editor = mypreferences.edit();
editor.putBoolean("check_enabled", checkboxb.isChecked());
editor.commit();