Android :: Save Configuration Value As Integer In Preference Activity?
Sep 16, 2010
Is there a way how I can tell the Preference Activity that value should be saved as integer? So far my all values are saved as strings... I can limit input to integers via XML easy:
<EditTextPreference android:key="SomeKey" android:numeric="integer" />
but it is still saved as string and later trying to getInt("SomeKey") on preferences object I always get java.lang.ClassCastException: java.lang.String.
Is there a way that EditTextPreference value would be saved not as string? Or maybe I should use some other type of Preference for numeric input?
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May 18, 2010
I started two days ago with android, gone through the hello android stuff and also started to read the Hello Android book, which is great.
PROBLEM:
I use in my app - VERY EASY APP- the XML output. So basically the main activity just tells the android to show the XML layout of main.
But what if I have in the activity - code defined integer variable and I want this integer variable also be shown on the display?
How do I PUSH the integer variable to the XML??? From main XML reference to other strings in XML is easy - @string/app_name ... but how do I use the integer variable from the activity?
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Aug 26, 2009
In Java ME we can set .jad configuration in description file and we can get this values in midlet by getAppProperti(""); So in Android we can set apk configuration (eclipse) apk configuration. But when I set this! my file default properties change and my projet signal some error. So in activity when can add System.setProeprty("name","values"). My problem I wan to specify the server IP and some code in apk only for this apk file. Each apk can have his code and server IP.
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Sep 24, 2009
I have pretty unassuming preferences screen based on Preference Activity. (You can see it in DroidIn app) I'm having some problems with it that I think have to do with redrawing the screen after updates. Here are the symptoms: 1. OnPreferenceChangeListener#onPreferenceChange if I change summary of the preference by doing Preference#setSummary the new value is painted over the old one creating unsightly effect 2. My preferences screen is large enough that user has to scroll. While scrolling, the whole screen get all messed up, again it looks like view is redrawn (when scrolled) without erasing the background first.
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Sep 29, 2010
I'm writing a widget with a configuration activity which calls the following method when its OK button is clicked:
CODE:..............
This is almost verbatim from the documentation. widget_id holds the widget ID that was dug up during the activity's onCreate().
When I place an instance of the widget on the home screen, I've verified that I get the expected sequence of events:
onReceive() gets an ACTION_APPWIDGET_ENABLED if it's the first one.
onUpdate() gets called (in which I detect that the widget isn't configured and draw something as a default action).
The configuration activity appears.
When I press OK, the ok() method above gets called.
The method gets all the way through to the finish() and the configuration activity goes away, but there's no call to onUpdate() or onReceive() after this point. (The widget itself has no updatePeriodMillis.) I end up with a widget on the screen that has the results of my default action but never gets updated.
If I set the widget up without a configuration activity, it gets updated when created and everything works as expected (just without the configured bits).
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Apr 15, 2009
I'm playing around with the new AppWidget API, I get the impression from the docs that I don't need an android:configuration attribute in my AppWidgetProviderInfo xml resource. Curiously though, when I try to add my AppWidget to the home screen, I just get a black textview that reads "Problem loading widget".
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Oct 17, 2010
I have a widget with a configuration activity.
Currently the configuration launches when you click on the widget.
I want to add the configuration as an app icon to the launcher.
The problem is that when the configuration launches on click, I get a specific widget id , so each widget instance can have a different configuration.
What will happen if I start the activity from the launcher?
I wont be able to show multiple configurations on the same activity.
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Nov 16, 2010
I've downloaded Launcher Pro, I currently still have ADW installed as well. When I use LauncherPro my home screen (and other screens) are not set up the way I currently have them. I spent a lot of time setting my current screens so they are exactly the way I want them. Any way to save that config when switching to LauncherPro? It does seem faster so I want to give it a shot, but I'm dreadig setting everything up again- widgets, apps, etc.
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Nov 28, 2011
GT-I9100
version 2.3.5
Kernal I9100XWKJ2
GINGERBREAD.XWKI8
Just wondering I have the above phone, and ever since I bought it, I cant seem to configure my personal hotspot SSID and passcode, without it defaulting back to AndroidAP and default passcode I enter in my desired SSID and passode, click save, and if I go to conect on laptop it will come up ok, but only that one time. If I literally go straight back into the configuration of wifi hotspot, it has defaulted back to AndroidAP
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Jan 30, 2009
I've created a set of preference screens building on the tuts on androidguys. My preference XML contains nested PreferenceScreens. The below doesn't occur in the root screen, only once clicking to a child PreferenceScreen. Once in that PreferenceScreen, even before selecting an EditPreference, if I change orientation (i.e. flick the G1 keyboard out) I get an error: 01-30 09:33:54.080: ERROR/WindowManager(1261): android.view.WindowLeaked: that was originally added here.I have previously overcome this in other activities by utilising the onPause etc methods with custom dialogs I use. How can I prevent this in the PreferenceActivity? What am I missing?
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Jul 4, 2010
i'm using PreferenceActivity class to configure my widget. PreferenceActivity class automatically saves user preferences, so in widget update service i can call context.getSharedPreferences() and i obtain user preferences.Problem is follow: if you have many widget of same type, how PreferenceActivity class saves prefs? how i can load appWidgetId specific prefs from sharedPreferences?
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Nov 4, 2010
Is it possible to use the PreferenceActivity and PreferenceScreen to manage multiple instances of preferences fro a single app? It seems that they store preferences as "default" preferences only. I would like to use a PreferenceScreen as my configure activity for an AppWidget, but I need to be able to store distinct preferences for each widget.
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Jul 13, 2010
It occur some problems to develop U/I. there is a PreferenceActivity that was aleady developped and is typecally like 'Settings' of android. by the way, the customer is requiring to change U/I like IPhone.Requirements are
1.application title-bar using ImageView(or TextView) positions to top
2. remove ContextMenu, alternativly static menu buttons positon to bottom.
3. PreferenceActivity is able to scroll and title-bar & menu buttons are fixed each positions.
just all. but It's very difficult to add & fix two views in Preference Activity.
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Apr 11, 2010
I have a problem in the Preferences Activity, in the main preferences the theme shows ok, but if I get to a sub preference, the theme gets messy, it is not white as it should, it is all dark, and the font is black so you can't see much, and when I start clicking on any items they will get sometimes white as they should but revert to black soon after. This is only happens on 2.1, in both the real device and emulator. Tested on the emulator running 1.6 and it was working correctly.
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Aug 1, 2010
I've got a quite interesting issue when I try to display a ProgressDialog (the simple, spinner type) within a onPreferenceChange listener.The ProgressDialog shows up, but not until the method (sleep in this case) has finished. What am I doing wrong?
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Jan 11, 2010
I want to List Item in Preference activity. and I want to launch a Browser with a URL which can change dynamically, When I click on that Item. Can anyone let me know how can i Achieve?
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Jul 9, 2010
I need to access the shared preference in a background service instead of activity on phone boot up.But getSharedPreferences function is define in the activity, so how can i access the data without creating the activity?
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Sep 18, 2010
I'm having an issue with a config activity for a widget. According to the dev docs, if I specify a configuration activity than the onUpdate method of the AppWidgetProvider doesn't get called until after you request an update once you've completed the configuration activity. For me its happening in reverse, the onUpdate method of the AppWidgetProvider gets called first, followed by the configuration activity. Then the onUpdate method is never called after completion of the config activity even though I request it explicitly. I tried with level 4 and level 7 API, same result. Here is some of the source:
Manifest:
<?xml version="1.0" encoding="utf-8"?> <manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.chris.android.swidget"
android:versionCode="1" android:versionName="1.0">
<application android:icon="@drawable/app_icon" android:label="@string/app_name">
<activity android:name=".SWidgetConfigure">
<intent-filter> <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
</intent-filter> </activity>
<receiver android:name=".SWidgetProvider" android:label="@string/ widget_name">
<meta-data android:name="android.appwidget.provider" android:resource="@xml/swidget_info"/> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter> </receiver>
<service android:name=".service.PUpdateService" />
</application> <uses-sdk android:minSdkVersion="4" />
<uses-permission android:name="android.permission.INTERNET" />
</manifest>
swidget_info.xml: <?xml version="1.0" encoding="utf-8"?> <appwidget-provider
xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="294dp" android:minHeight="72dp"
android:updatePeriodMillis="86400000"
android:initialLayout="@layout/swidget_layout"
android:configure="com.chris.android.swidget.SWidgetConfigure" >
</appwidget-provider>
I can include source of the onUpdate method from the AppWidgetProvider activity and the onCreate method of the configuration activity if necessary, but they are both being called find its just the order they show up on the emulator is wrong.
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Nov 13, 2009
I think I've missed something in how Android is supposed to work! I have the main Activity with a menu option that opens the preferences screen. What I need is a way for any changes that were made to be communicated back to the main Activity as soon as the preference is activated. At the moment the only way I could get it working is by using the intent data that gets sent back when the prefs activity closes but this isn't really enough. The reason why it needs to be instantaneous is that one of the preferences is a 'Clear cache' button, so I would like the data to be deleted when the user requests it and no later!
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Oct 14, 2010
I have one main activity and one preference Activity. On my first activity I call menu and go on preference Activity by calling startActivityForResult. Code...
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Jun 17, 2010
I encounter a problem with a ProgressDialog in a PreferencesActivity in my application.What I want to do is pop up a ProgressDialog after the user has changed his username or password during the check on the remote server. In the onSharedPreferenceChanged() I call the ProgressDialog.show() method. Sometimes it works fine, sometimes not at all.
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Jun 19, 2010
My app crashes with a null pointer exception on the code below. I have an xml preference file under res/xml/defaults.xml
public class Preference extends Activity {
public Preference() {
} public String getPreference(String key)
{ //it still crashes here
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
String result = settings.getString(key, null); return result;
} }
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Apr 10, 2010
I am using a PreferenceActivity to show some settings for my application.I am inflating the settings via a xml file so that my onCreate (and complete class methods).These preferences will automatically save to SharedPreferences as the user interacts with them. To retrieve an instance of SharedPreferences that the preference hierarchy in this activity will use, call getDefaultSharedPreferences(android.content.Context) with a context in the same package as this activity.
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Apr 10, 2010
I've a Preference Activity which works perfectly the first time i launch it.But if i close it ( with the back button ) and then i re open it ( through a menu click in the main activity ) then i get a black screen. There is no preferences at all.I can't figure it out why it should not working.It seems all the code is being called normally as the working one but no preferences are showing on the screen.
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Jun 12, 2010
How can we pass Android Home Screen Widget info ( putExtra maybe ) to an Activity.. What particular method callback will handle this one?
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Jan 22, 2009
In an ActivityUnitTestCase I'm trying to do:
CODE:...............
But on the save state call I get this trace:
CODE:.................................
Going through the ApplicationContext source code I've found this (http://tinyurl.com/d8qsyc):
CODE:...................
It seems the problem is that the activity token is not set. But here I'm puzzled, I don't know where to go next. Any ideas on how to fix it or workaround it are appreciated. I want to test that my application is saving its state correctly.
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Jul 1, 2010
I have an Activity, which contains a bunch of check boxes and a submit button.
When the submit button is clicked, the activity will exit (finish() will be called). Before the activity exits, I want to save the states of the check boxes in the activity, so when the activity starts again, the check boxes can stay in their previous states. What's the correct way to save these states? Should I use SharedPreference.
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Sep 5, 2009
I'm trying to show a simple layout where I can call this activity and fill in some values, then hit the save or cancel button. Unfortunately the save and cancel buttons never appear. Can someone help please?
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/ android" android:layout_width="fill_parent" android:layout_height="wrap_content"
android:paddingLeft="8dp" android:paddingRight="8dp" android:paddingTop="8dp">
<TableLayout android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="wrap_content"> <TableRow>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/band" android:textStyle="bold" android:textSize="16px" android:paddingRight="5dp" />
<EditText android:id="@+id/band" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"/>
</TableRow> <TableRow>
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/members" android:textStyle="bold" android:textSize="16px" android:paddingRight="5dp" />
<EditText android:id="@+id/members" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"/>
</TableRow> </TableLayout>
<TableLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent">
<TableRow> <Button android:id="@+id/save" android:text="@string/save" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" />
<Button android:id="@+id/cancel" android:text="@string/cancel" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" />
</TableRow> </TableLayout> </LinearLayout>
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Feb 17, 2010
When the user press the home key, the onPause method is called. At this time, the application is supposed to save its state so it can be properly recovered later.
However, and if the state is taking too much time? For example, issuing a closeAllNetworkConnections that was waiting a feedback from the server, or just if the amount of information we're writting to disk is a lot of info... what would happen?
In my tests, i'm getting from 300-500 ms of time until the process is killed.
Is there a safer place to put a "save everything and quit" code so that it can safely save everything before a "kill the activity" task is issued?
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Nov 17, 2010
I am trying to save some values in the onSaveInstanceState(Bundle) method of my activty by following the example here: How do I save an Android application's state?
But it doesnt seem to load it from the Oncreate(). the bundle object is always null but whenever i call another activity, it does indeed go into the onSaveInstanceState method to save my values.
Now i read that question i just posted and someone noted how they could not get it to work in an emulator? unfortunately that is all im working on. On an emulator and cant test the app on the device as i have no device available to me right now And the web services i am interacting with are in a local VM on my work machine that cannot be accesses remotely at the moment.
My question is, is it true that saved bundles dont work on emulators? I also noticed how when i do dismiss or bring up a new activity , the activity calles onPause and then onStop. when i bring back the same activty, it goes straight to onCreate?
now according to the docs here http://developer.android.com/guide/topics/fundamentals.html#actlife That is correct in terms of what the lifecycle diagram shows but if you read below that diagram on the onStop() section it says the next step it goes into is either onRestart() or onDestroy()? no mention of onCreate? Type on the docs?
Anyways here is my onSaveInstanceState() and onCreate() both in the same activity: code...
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