setDefaultValues
Sets the default values from an XML preference file by reading the values defined by each Preference item's android:defaultValue attribute. This should be called by the application's main activity.
Parameters
The context of the shared preferences
The resource ID of the preference XML file
Whether to re-read the default values. If false, this method sets the default values only if this method has never been called in the past (or if the KEY_HAS_SET_DEFAULT_VALUES in the default value shared preferences file is false). To attempt to set the default values again bypassing this check, set readAgain to true.
Note: this will NOT reset preferences back to their default values. For that functionality, use getDefaultSharedPreferences and clear it followed by a call to this method with this parameter set to true.
Similar to setDefaultValues but allows the client to provide the filename and mode of the shared preferences file.
Parameters
The context of the shared preferences
A custom name for the shared preferences file
The file creation mode for the shared preferences file, such as MODE_PRIVATE or MODE_PRIVATE.
The resource ID of the preference XML file
Whether to re-read the default values. If false, this method will set the default values only if this method has never been called in the past (or if the KEY_HAS_SET_DEFAULT_VALUES in the default value shared preferences file is false). To attempt to set the default values again bypassing this check, set
readAgain to true.
Note: this will NOT reset preferences back to their default values. For that functionality, use getDefaultSharedPreferences and clear it followed by a call to this method with this parameter set to true.