github: S06.01-LaunchSettingsActivity , S06.02-SettingsFragment ,
Settings for Sunshine:
- Unit Setting-
- Fahrenheit
- Celsius
- Location Setting
* Reference: Udacity Nanodegree Program- Become an Android Developer *
Android
Edit Text Preference Constraints
github: T06.10- EditTextPreferenceConstraints
* The below material is from Udacity Nanodegree Program- Become an Android Developer *
Setting an acceptable range
To limit the acceptable values between 0 (non inclusive) and 3 (inclusive) we opted to use a PreferenceChangeListener – this is not the same as a SharedPreferenceChangeListener. The differences are:
- SharedPreferenceChangeListener is triggered after any value is saved to the SharedPreferences file.
- PreferenceChangeListener is triggered before a value is saved to the SharedPreferences file. Because of this, it can prevent an invalid update to a preference. PreferenceChangeListeners are also attached to a single preference.
Edit Size Crashes issue!!!!
Enter an input for the size multiplier but not a number (ex: aaa), that will cause our app crashes.
Edit Text Preference
github: T06.09_EditTextPreference
resource: EditTextPreference
* Reference: Udacity Nanodegree Program- Become an Android Developer *
*Preference Summary
github: T06.08_PreferenceSummary
* Reference: Udacity Nanodegree Program- Become an Android Developer *
List Preference
github: T06.07_ListPreference
- Add a list preference
- Add string values for the list preference
- Add a res->values->arrays.xml file which contains two arrays, one for labels and one for values. (The arrays should contain strings found in this file)
- Update setupSharedPreferences and onSharedPreferenceChanged to load the color
Preference Change Listener
github: T06.05_PreferenceChangeListener
* Reference: Udacity Nanodegree Program- Become an Android Developer *
Use Resources!
github: T06.04_exercise_UseResources
- Create Boolean and Strings resources for checkbox preference
- Update the hardcoded values in the pref_visualizer to the new resources
- Update the hardcoded values in the VisualizerActivity‘s onCreate method
Reading from SharedPreferences
To read values from SharedPreferences:
github: T06.03-Exercise-ReadingFromSharedPreferences
To read the value of the CheckBox from them SharedPreference and update the UI view based on that value.
Gina Hsu 