listpreference

问题 I am working on adding ripple effect when the preference is touched (selected). I have customized my preference by extending the ListPreference . I have tried to set the ripple effect programmatically by using RippleDrawable but I don't see the animation. Here is my customized preference class public class CustomListPreference extends ListPreference { public CustomListPreference(Context context, AttributeSet attrs) { super(context, attrs); } public CustomListPreference(Context context) {

问题 I have a problem.I have read many forums and topics but I can not understand how to create a class file to load JSON data like: {"city":[{"id":"1","name":"London"},{"id":"2","name":"Berlin"},{"id":"3","name":"New York"}],"success":1} to an ListPreference list for saving one value to shared preference file. Like my saved url: <string name="URL">192.168.1.100/data</string> without deprecated methods ( findPreference("city") ). The preference xml which I use is <?xml version="1.0" encoding="utf

问题 I have the following code: PreferenceScreen root = this.getPreferenceScreen(); ListPreference lp = (ListPreference) root.findPreference("signedUpCompetetion"); CharSequence[] entries = null; CharSequence[] entryValues = null; FileInputStream fis; try { fis = openFileInput("list_file.txt"); InputStreamReader inputStreamReader = new InputStreamReader(fis); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String line; entries = new CharSequence[10]; entryValues = new

问题 I have the following code: PreferenceScreen root = this.getPreferenceScreen(); ListPreference lp = (ListPreference) root.findPreference("signedUpCompetetion"); CharSequence[] entries = null; CharSequence[] entryValues = null; FileInputStream fis; try { fis = openFileInput("list_file.txt"); InputStreamReader inputStreamReader = new InputStreamReader(fis); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String line; entries = new CharSequence[10]; entryValues = new

问题 I am trying to set a value to a ListPreference and always get the error message: The method findPreference(String) is undefined for the type new DialogInterface.OnClickListener(){} This is my code: ListPreference lp = (ListPreference) findPreference("enableTranslations"); lp.setValue(""); Thanks 回答1: You simply call findPreference in wrong place (in OnClickListener). Call it in method of class that has findPreference method (PreferenceManager or PreferenceActivity) or on object of such type.

问题 I have a list Preference that created from resource xml. I added preference that created dialog in which user can add value to listPreference. using those methods i added new value: entries = getEntries(); entryValues = getEntryValues(); when user is adding values to listpreference, its displayed. But when preferenceScreen is recreating new value disappearing. How can i save those new values? 回答1: Problem is that when you're reopening your PreferenceScreen , it loads the ListPreference 's

问题 I'm working on listpreferences and I have implemented the OnSharedPreferenceChangeListener to change the text on a textview based on which item is selected on the listpreference. However it doesn't register any changes and I have run out of ideas so any help would be appreciated. Thanks public class pref extends PreferenceActivity implements OnSharedPreferenceChangeListener { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super

问题 I want to set the icon in ListPreference items in android. What to write in ListPreference or where to write to set the list items icon? 回答1: You need to use a custom layout for your ListPreference . eg: <android.preference.ListPreference android:layout="@layout/your_custom_layout" .... /> And add what you want to your custom layout. eg: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android

问题 I've set up a Preference Screen in which i have a list preference which allows user to select time interval to notify them. They can choose whether to notify them after every 2,4,8,10 or 12 hours. Here's my list preference: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" > <ListPreference android:title="Notification Timer" android:summary="Select when to Notify" android:dialogTitle="Show Notification after every:" android

问题 I have a listpreference . No matter how I copy the code here, it appears wrong, so I just copy the matter of it: string-array name="listArray" items: Mercedes, Audi, Porsche string-array name="listValues" items: car1, car2, car3 I have this code in the preferences.xml at the listpreference part: <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