How to read data form EditTextPreference in android

user_9042612 0
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I am trying to read data from EditTextPreference. Like below

Preference.xml

<PreferenceCategory android:title="@string/driver_info">
    <EditTextPreference
        android:dialogTitle="@string/driver_name"
        android:key="driver_name"
        android:title="@string/driver_name" />
</PreferenceCategory>

ConfigActivity.java

public class ConfigActivity extends PreferenceActivity implements OnPreferenceChangeListener {

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.xml.preferences);
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ConfigActivity.this);

    final String driverName = prefs.getString("driver_name",  null);
    Log.d(TAG,"driverName-->"+driverName);
}
}

In the edit text i have entered aaaa and clicked OK button , but still receiving below log

ConfigActivity: driverName-->null

enter image description here

I just trying read the data from "test"(string). Please find attached screenshot for reference.

Can you please help me . How we will read editext string.

android-edittext sharedpreferences android
1 Answers

You can listen to changes with an OnPreferenceChangeListener. (I see that you have already implemented it in your class.) Then you can set the listener to your EditTextPreference like:

Preference driverNamePref = findPreference("driver_name")); //You can put this string key in string resources in fact
driverNamePref.setOnPreferenceChangeListener(this);

In the onPreferenceChange callback, you'll receive the new value entered by the user, so you can take a grasp of the new value and do whatever you want to do with that:

 @Override
 public boolean onPreferenceChange(Preference preference, Object newValue) {
  //Get the newValue and do what you want to do with it
    if (preference.getKey().equals("driver_name")) {
        String driverName = (String) newValue;
    ...
   }
 }

Note also that onPreferenceChange callback is called before the new value is actually saved in the sharedPreferences. So you can also make data validation here if you need to. If data is not valid, you can show an error and return false, so new value won't be saved. If everything is all right return true and it will be saved to SharedPreferences.

user_97582080
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