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Android updating custom preference summary


Android updating custom preference summary

By : Vivian
Date : November 21 2020, 11:01 PM
Does that help It looks like you've never set the change listener on your preference using preference.setOnPreferenceChangeListener(...) (or, in your code, I guess it would be bindPreferenceSummaryToValue(preference))
code :


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Android preference summary . How to set 3 lines in summary?

Android preference summary . How to set 3 lines in summary?


By : 616b2f
Date : March 29 2020, 07:55 AM
I wish this helpful for you You can create you Preference class by extending any existing preference:
code :
public class LongSummaryCheckboxPreference extends CheckboxPreference
{
    public LongSummaryCheckboxPreference(Context ctx, AttributeSet attrs, int defStyle)
    {
        super(ctx, attrs, defStyle);        
    }

    public LongSummaryCheckboxPreference(Context ctx, AttributeSet attrs)
    {
        super(ctx, attrs);  
    }

    @Override
    protected void onBindView(View view)
    {       
        super.onBindView(view);

        TextView summary= (TextView)view.findViewById(android.R.id.summary);
        summary.setMaxLines(3);
    }       
}
 <com.your.package.name.LongSummaryCheckBoxPreference 
    android:key="@string/key"
    android:title="@string/title"
    android:summary="@string/summary" 
    ... />
Android : Set a preference's summary in a main preference screen to the values selected in a sub preference screen

Android : Set a preference's summary in a main preference screen to the values selected in a sub preference screen


By : Alexandru
Date : March 29 2020, 07:55 AM
To fix the issue you can do I have resolved this myself. It turned out to not be too complex.
In the "onResume" of the activity for the first preference screen, I simply call a utility method to generate the summary string for the preference whose summary is to contain the values of all selected values in the second screen. This utility method queries the stored preferences to get the preference values and then makes up a suitable string. As this utility method checks the values of the stored preference the summary will be accurate when you first go into the activity as well as when you return to the activity from the sub-screen.
code :
// update the preference's summary to a string containing the values selected in the sub-screen
Preference syncPref = findPreference(SUB_SCREN_OF_SETTINGS);
syncPref.setSummary(getSubScreenSummary(....));



public String getSubScreenSummary(){
    // get the value of list_pref_1
    // get the value of list_pref_2
    String s = ...... // build up the string based on values of list_pref_1/list_pref_2
    return s;
}
Android Preference Summary in Preference Menu Not Persisting

Android Preference Summary in Preference Menu Not Persisting


By : rahul garg
Date : March 29 2020, 07:55 AM
help you fix your problem
Is this method supposed to update a menu item's summary in a Preference fragment in a non-volatile way?
Android Preference. How to force update summary for the preference with SummaryProvider setted?

Android Preference. How to force update summary for the preference with SummaryProvider setted?


By : Michael
Date : March 29 2020, 07:55 AM
I wish this helpful for you I looked at the Android sources (EditTextPreferenceDialogFragmentCompat.java) - how the dialog for changing settings notifies EditTextPreference about a value change. Did as well and it worked :)
code :
if (editTextPreference().callChangeListener(value)) {
    editTextPreference().setText(value);
}
How do I display the current value of an Android Preference in the Preference summary?

How do I display the current value of an Android Preference in the Preference summary?


By : Duke95
Date : March 29 2020, 07:55 AM
may help you . There are ways to make this a more generic solution, if that suits your needs.
For example, if you want to generically have all list preferences show their choice as summary, you could have this for your onSharedPreferenceChanged implementation:
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