android-preferences

Best option to store username and password in android app

半腔热情 提交于 2019-11-28 17:49:21
I am developing an app where user needs to sign in to perform operations...but mostly on android handset ppl use "keep me signed in"...and in tht case I'll have to maintain the value of username and password within my app..should I use preferences, or SQLite Db or is there something else and how can I make it secure? Plz Help... Thanks in advance.. Yes, this is tricky on Android. You don't want to store the plaintext password in the preferences, because anyone with a rooted device will basically be displaying their password to the world. On the flip side, you can't use an encrypted password,

ActionBar in PreferenceActivity

限于喜欢 提交于 2019-11-28 16:35:31
In my application I am using the new Action Bar Compatibility sample from Google (located at <sdk>/samples/android-<version>/ActionBarCompat ) which works great. The only problem I have is applying this to my PreferenceActivity in order to get a screen like the settings in the Android Market (see picture). To fill the ActionBar with icons, each Activity must extend the ActionBarActivity class. The problem is that my Activity already extends PreferenceActivity and in Java classes can not extend more than one class. There must be a way to get the ActionBar together with a PreferenceScreen . I

The best way to caching json

元气小坏坏 提交于 2019-11-28 16:34:08
问题 My application should work not only in online but also in offline mode. For that reason I am considering find the best way for cashing data. I't like use SharedPreference for store data but in android documentation writen Maximum size in characters allowed for a preferences value is 8192. I don't know this is ok or not? I tried to pass out of this idea trying to use FileCashing or sqLite cashing. So what you think guys what is the best SharedPreference vs FileCashing or vs SqLiteCaching? 回答1:

Android preferences onclick event

我们两清 提交于 2019-11-28 15:26:27
问题 In my preferences.xml I have a preference element like this: <Preference android:title="About" /> I want to assign onClick event, so if user would click on it, I would be able to do open new Intent or browser. I tried to do it like I do with buttons, but this not seem to work. 回答1: Badr, You need to set android:key for the item, Then in your code you can do... Assuming you use the following in your XML: <Preference android:title="About" android:key="myKey"></Preference> Then you can do the

Android: Preference Fragment with a Navigation Drawer's Fragment

北城以北 提交于 2019-11-28 11:18:59
Hi I have an Android app that already uses a Navigation Drawer. My MainActivity extends Fragment Activity and my SettingFragment extends PreferenceFragment Settings Fragment : public class SettingsFragment extends PreferenceFragment { public SettingsFragment() {} @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Load the preferences from an XML resource addPreferencesFromResource(R.xml.prefs); } } and my MainActivity : PreferenceFragment preferenceFragment = new SettingsFragment(); FragmentTransaction ft = getSupportFragmentManager()

What's the difference between getDefaultSharedPreferences() and getPreferences()?

╄→尐↘猪︶ㄣ 提交于 2019-11-28 09:59:40
I'm currently taking the "Developing Android Apps" Udacity course. In the "Lesson 3: New Activities and Intents > Use SharedPreferences" segment, the instructor asked me to dig around the Android Developer site for how to get the user preferences from SharedPreferences . However, I found it different between the official documentation and the course's solution. The Udacity course's solution says, to grab a SharedPreferences instance for the PreferenceActivity , you should call: SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity()); (where getActivity() is

How to set the Default Value of a ListPreference

£可爱£侵袭症+ 提交于 2019-11-28 09:35:05
i need to set the defult value for a ListPreference when the Activity starts. I've tried with ListPreference.setDefaultvalue("value"); but it makes the firts Entry of the List as default. I need it because i must check a condition and set as default the value which satisfies that condition, so I think it can't be done from the xml file (with android:defaultValue ) For example, suppose I have this array of values in the arrays.xml: <string-array name="opts"> <item>red</item> <item>green</item> <item>blue</item> </string-array> <string-array name="opts_values"> <item>1</item> <item>2</item>

Preference sub-screen not opening when using support.v7.preference

本小妞迷上赌 提交于 2019-11-28 08:58:39
I am trying to implement preferences with sub-screens using AppCompatActivity and support.v7.preference According to the docs, every PreferenceScreen within another PreferenceScreen functions as a sub-screen, and the framework will handle displaying it when clicked. http://developer.android.com/guide/topics/ui/settings.html#Subscreens <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <!-- opens a subscreen of settings --> <PreferenceScreen android:key="button_voicemail_category_key" android:title="@string/voicemail" android:persistent="false"> <ListPreference

ClassCastException in PreferenceActivity

[亡魂溺海] 提交于 2019-11-28 07:43:57
问题 I am trying to get an example from the Android 2 Application Development book by Reto Meier to work (page 202). As per the instructions I have created a userpreferences.xml as follows: <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" > <CheckBoxPreference android:key="PREF_AUTO_UPDATE" android:title="Auto refresh" android:summary="Select to turn on automatic updating" android:defaultValue="true" /> <ListPreference android:key="PREF_UPDATE_FREQ" android:title=

CheckBoxPreference with own layout

北城以北 提交于 2019-11-28 07:39:57
I have PreferenceScreen with some PreferenceCheckBoxes. I want to change the textColor and textSize for title and summary and the images for the CheckBox checked and uncheckes. So I am using android:layout to change this attributes. My ChceckBoxPreference: <CheckBoxPreference android:layout="@layout/preference_checkbox" android:key="temp" android:title="@string/title" android:summary="@string/summary" android:defaultValue="true" /> When I use android:widgetLayout it looks strange. And this is my preference_checkbox.xml: <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"