android preferences

Rajab Davudov

Android Preferences

Preferences are Important

• Preferences are an important part of an Android application. It is important to let the users have the choice to modify and personalize their application depending on their needs.

Preferences are Important

How To

• res/xml/preferences.xml• an Activity extends PreferenceActivity

Preference Types

• The CheckBoxPreference is a simple checkbox, that can return true or false.

• The ListPreference, which shows a radioGroup where only 1 item can be selected a time.

• The EditTextPreference shows a dialog with an editText view which returns a String.

Preference Types

Preference Types

• The RingtonePreference shows a radioGroup that shows the ringtones.

• The Preference is a custom preference.• The PreferenceScreen is a screen with preferences. When you

have a PreferenceScreen inside an other PreferenceScreen, it simply opens a new screen with other preferences.

Preference Types

CheckBoxPreference<CheckBoxPreference android:title="Checkbox Preference" android:defaultValue="false" android:summary="This preference can be true or false" android:key="checkboxPref" />

ListPreference<ListPreference android:title="List Preference" android:summary="This preference allows to select an item in a array" android:key="listPref" android:defaultValue="digiGreen" android:entries="@array/listArray" android:entryValues="@array/listValues" />

Use PreferencesSharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this); boolean checked = sp.getBoolean("checkBox", true) ;String s = sp.getString("radioButton", "default") ;

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Rajab Davudov

Senior Developer at Azerfonradjab@gmail.com

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