Android :: Preferences Not Saved When Resume App
Jan 22, 2009
I'm having this problem with one of my apps where some people are reporting that their preferences are not being saved when they close and resume the app. The preferences theyre talking about happen to be actual Preferences (i.e. the built-in preferences manager for an activity). They say they're not doing anything special, just exiting the app and going back to it. Does anyone know why the prefs wouldn't be saved for only this select few people? I'm at a complete loss.
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Apr 22, 2010
I am using a PreferenceActivity to let the user set some values. I am feeding it the xml file with the defined preferences.
I have set all the android:defaultValue="" for them.
When I start my application, I need the preferences, or if they are not set yet manually, I want the default values:
CODE:.................
However, when android:defaultValue="true" I still get false. So, it looks like the defaultValues set in the XML are not used anywhere but when initializing the preferences-screen.
I don't want to hardcode the default values in the getBoolean() method. So, is there a way get the default-values with only defining these in 1 place?
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Mar 19, 2010
My application is used on multiple platforms so it saves it preferences to a file (rather than to the standard Android SharedPreferences).
Is there any easy of reusing the PreferenceActivity to save preferences to a file or is it a case of creating a whole new activity to do the job? If the latter is the case is there a layout I can use that will make the activity look like the normal preferences screen? PreferenceActivity uses com.android.internal.R.layout.preference_list_content but this doesn't appear to be available to apps for reuse.
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Sep 28, 2010
Please, I need advice on how to get phone numbers saved on the phone up when forwarding received SMS or MMS! At the moment, I can only forward messages to contacts saved on Sim card!
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Jun 23, 2010
My android application has two kinds of preferences:
1) I have user preferences defined in res/xml/preferences.xml so that users can manage their preferences with a PreferenceActivity.
2) I'd like to define another file for global configuration preferences of my app.
What is the best way to manage my app config preferences? Should I create another XML file with config values or should I specify those config values in strings.xml? What is the best practice for managing config preferences?
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Jan 20, 2009
How to pause and resume the activity?
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May 6, 2010
I am writing a simple android application with a class that extends activity, that plays a video from a url on the web. There is a button on top that on click takes the user to a web page.
What I want to do is when the user is browsing the web page, if he hits the back button, I want him to come back to the main activity and restart the video. Is there a way to do this?
Also, is there a way the video can be resumed from where it left off?
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Aug 28, 2009
I am learning about OpenGL and managed to write a prototype game using VBO buffers. If I start the application from Eclipse or adb, everything works fine until I press the back or <Home> button. If I restart the application either by a long press on <HOME> and selecting my program or by restarting it from the applications, I sometimes get a black screen and the LogCat shows this error:
CODE:...............
I am aware that it is probably a wrong setting in my program's flow, but I am not fluently enough with OpenGL.
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Mar 19, 2010
I have an AsyncTask that acts as a countdown timer for my game. When it completes the countdown it displays the out of time end screen and it also updates the timer displayed on the screen. Everything works fine, except I need to be able to pause and resume this when the pause button in the game is pressed.
If I cancel it and try to re-execute it, it crashes with an IllegalStateException.
If I cancel it and instantiate a new AsyncTask in its place the old one begins to run again and the new one runs at the same time.
Is there a way to cancel/pause the timer and restart it using AsyncTasks or is there a different way I should be going about doing this?
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Jan 22, 2010
I'm currently working with a two-activity application. The first activity allows the user to choose options for their upload, and the second activity displays a ListView of their results once processed.I have code in place that performs the uploads/downloads in the background, regardless of whether the application is currently in focus or not (thanks to Matthias Kaeppler's Droid-Fu).I would like to have my application Resume into my second (results) activity when a user clicks on the icon from the top-level launcher, regardless of how long they have been away from the app. I thought that the 'alwaysRetainTaskState' flag in the Manifest would do it, but I've not had success with that. Can anyone tell me how I need to set up my Manifest to get this functionality?
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Mar 10, 2010
I wanted to know if it is possible to Detect in an Activitiy's OnResume if the Activity is resuming because the devices Back button was hit or not?
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Jul 30, 2010
I'm calling this tasks:
CODE:.........
And here are the two TimerTasks:
CODE:........
As you can see, I just call a method after 5 resp. 10 seconds. From time to time I would like to pause the "countdown". This means i want that the time until the 5 seconds are passed isn't running anymore. And then in a later point in time, I would like to resume it. How can I achieve that?
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Jul 22, 2010
What I have here is a simple webview activity that when loaded it auto displays an ongoing notification. The idea is that people can navigate away from this activity and quickly access it again from any screen they want by pulling down the drop down menu and selecting it. Then when they want they can just close the notification by hitting the menu button and hitting exit and then the notification clears. This all works fine. However, when the notification is pressed it starts a new instance of the activity. What would I have to change to make it see if the activity has not already been destroyed and I can just call that instance back(resume it) and therefore not needing to load it again and won't need to add another activity to my stack.
package com.my.app;
import com.flurry.android.FlurryAgent;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.webkit.CookieSyncManager;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class Chat extends Activity {
private ProgressDialog progressBar;
public WebView webview;
private static final String TAG = "Main";
private NotificationManager mNotificationManager;
private int SIMPLE_NOTFICATION_ID;
@Override
public void onStart()
{ super.onStart();
CookieSyncManager.getInstance().sync();
FlurryAgent.onStartSession(this, "H9QGMRC46IPXB43GYWU1");
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.chat);
mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
final Notification notifyDetails = new Notification(R.drawable.chat_notification,"ChatStarted",System.currentTimeMillis());
notifyDetails.flags |= Notification.FLAG_ONGOING_EVENT;
Context context = getApplicationContext();
CharSequence contentTitle = "Chat";
CharSequence contentText = "Press to return to chat";
Intent notifyIntent = new Intent(context, Chat.class);
PendingIntent intent = PendingIntent.getActivity(Chat.this, 0;
notifyIntent, android.content.Intent.FLAG_ACTIVITY_NEW_TASK);
notifyDetails.setLatestEventInfo(context, contentTitle, contentText, intent);
mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
CookieSyncManager.createInstance(this);
CookieSyncManager.getInstance().startSync();
webview = (WebView) findViewById(R.id.webviewchat);
webview.setWebViewClient(new chatClient());
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setPluginsEnabled(true);
webview.loadUrl("http://google.com");
progressBar = ProgressDialog.show(Chat.this, "", "Loading Chat...");
}
private class chatClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.i(TAG, "Processing webview url click...");
view.loadUrl(url);
return true;
} public void onPageFinished(WebView view, String url) {
Log.i(TAG, "Finished loading URL: " +url);
if (progressBar.isShowing()) {
progressBar.dismiss();
} } }
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
webview.goBack();
return true;
} return super.onKeyDown(keyCode, event);
} @Override
public boolean onCreateOptionsMenu (Menu menu) {
super.onCreateOptionsMenu(menu);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.chatmenu, menu);
return true;
} @Override
public boolean onOptionsItemSelected (MenuItem item) {
switch (item.getItemId()) {
case R.id.home:
Intent a = new Intent(this, Home.class);
startActivity(a);
return true;
case R.id.closechat: mNotificationManager.cancel(SIMPLE_NOTFICATION_ID);Intent v = new Intent(this, Home.class);
startActivity(v);
return true;
} return false;
} public void onStop() { super.onStop();
CookieSyncManager.getInstance().sync();
FlurryAgent.onEndSession(this);
} } @Commonsware
Just to be sure I have it correct, is this what you were suggesting? I was a little worried about this line:
PendingIntent.getActivity(Chat.this, 0, notifyIntent, SIMPLE_NOTFICATION_ID);
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
setContentView(R.layout.chat);
mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
final Notification notifyDetails = new Notification(R.drawable.chat_notification,"ChatStarted",System.currentTimeMillis());
notifyDetails.flags |= Notification.FLAG_ONGOING_EVENT;
Context context = getApplicationContext();
CharSequence contentTitle = "Chat";
CharSequence contentText = "Press to return to chat";
Intent notifyIntent = new Intent(context, Chat.class);
PendingIntent intent =
PendingIntent.getActivity(Chat.this, 0, notifyIntent, SIMPLE_NOTFICATION_ID);
notifyDetails.setLatestEventInfo(context, contentTitle, contentText, intent);
notifyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
CookieSyncManager.createInstance(this);
CookieSyncManager.getInstance().startSync();
webview = (WebView) findViewById(R.id.webviewchat);
webview.setWebViewClient(new chatClient());
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setPluginsEnabled(true);
webview.loadUrl("http://google.com");
progressBar = ProgressDialog.show(Chat.this, "", "Loading Chat...");
}
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Jul 2, 2010
I've got an app that creates an intent for the last.fm android app in which it will start the "recommended" station for my account when i press a button. The trick i'm trying to figure out is how do i get the phone back to my app without the user having to navigate back manually? Once it start the last.fm intent it takes you to the playlist and i need it to resume back to my app automatically.
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Feb 6, 2010
I've an App which performs a potentially large download in background thread. When the orientation changes or the keyboard is opened the App lifecycle system invokes the start/stop/pause/resume etc calls - is there any strategy available to resume the download rather than just set a flag so the new onCreate() knows it was interrupted and has to start it again?
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Nov 8, 2010
I am attempting to add a simple preferences file in a new Android project (New -> Android XML File), but it doesn't appear to be working correctly.
There is no root element to choose from when I select the Preference type layout. If I press Finish, it doesn't do anything. See screenshot below.
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Mar 11, 2010
I have an application where I navigate from Activity A to Activity B and back to A and then B. I want to resume the activity B (which has a Bundle passed to it ) from Activity A. The documentation says that OnSaveInstance() is called only when the activity is killed, so how do i use OnPause which does not have the Bundle to resume the activity B.
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Jul 23, 2009
I have an activity that is showing a video and when the user clicks a button, a new activity is launched. When the video activity stops, I pause the video view. When the video activity starts up again, I try to resume the video view videoView.start(), however, the video starts over from the beginning. I'm thinking that the buffer must be lost somewhere, so I now try to capture the current position via videoView.getCurrentPosition(), however, this is always returning 0.
Anybody know how to resume video playback when an activity starts up again?
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Sep 29, 2010
I suspect this will only have been noticed by people who listen to audio books!
After pausing playback (standard music app) then coming back to it a number of hours later, playback resumes a minute or 2 back from where it was paused. Which is rather annoying!
Guess a different music app might help, but I'm otherwise happy with the standard player... Anyone else come across the same issue?
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Jan 13, 2010
I've got an activity that calls a helper class called DownloadManager. DownloadManager spawns a thread that downloads a mp3 to the sdcard. I'm having some trouble finding the best design for resuming the initial activity and starting the MediaPlayer. Does it make the most sense to use a BroadcastReceiver that receives a message that download is complete, then start a new Intent of my activity? Think I saw something that I can't use an Intent to start an Activity from BroadcastReceiver because it is a background process.
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Apr 24, 2014
I really like Smart Launcher and I'm just done customising it but everytime I open an app it just starts from the start.
I'm reading some stuff in Reddit Sync, I press the home button to quickly check another app and when I go back to Reddit Sync (or any other app) it doesn't resume from where I left. Of course I can open up my recents and go from there but I'm wondering if this behavior is normal?
I'm on a LG G2 4.4.2 by the way.
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Apr 9, 2010
If changing the orientation of my phone or the emulator I get the following output in LogCat:
04-09 11:55:26.290: INFO/WindowManager(52): Setting rotation to 1, animFlags=0
04-09 11:55:26.300: INFO/ActivityManager(52): Config changed: { scale=1.0 imsi=310/260 loc=en_US touch=3 keys=2/1/1 nav=3/1 orien=2 layout=18}
04-09 11:55:26.460: INFO/UsageStats(52): Unexpected resume of client while already resumed in client
04-09 11:55:26.579: INFO/SearchPosition(807): Activity is paused
04-09 11:55:26.689: INFO/SearchPosition(807): Activity is resuming
SearchPosition is the activity that is displayed. Activity is paused is written in the onPause Method and Activity is resuming in the onResume method of the activity. I googled a little bit for the error message but I don't fully understand the meaning of it. I think it could mean that the old Activity is not properly destroyed after changing the screen orientation. Is this correct? If yes what causes the error? If this is not correct? What is the meaning of this output?
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Oct 3, 2010
Several of my Android applications show the following type message in the logcat output:
I/UsageStats( 59): Unexpected resume of com.totsp.test while already resumed in com.totsp.test
In this case I created the default Hello World app by letting the ADT tool generate it, and it still gets this message. I am not doing anything special in onCreate and don't even have any other methods defined.
I realize this is an INFO level message, and it doesn't appear to hurt anything, but I was curious what was going on so I made a test application that keeps track of the onResume invocations. It is indeed re-resuming when this occurs. I'm wondering why this this occurs? While I haven't noticed a problem (other than these annoying log messages), it seems like it could be using more resources than necessary to do all this stuff an extra time.
I have searched and read a similar question here on SO, and the answer there seems dubious to me: http://stackoverflow.com/questions/2606470/unexpected-resume-of-package-name-while-already-resumed-in-package-name-erro. Specifically, no, you don't want to use android:configChanges="orientation" because that is just subverting the orientation tear down/resume, rather than fixing it. Even the documentation notes "this attribute should be avoided and used only as a last-resort" (http://developer.android.com/intl/de/guide/topics/manifest/activity-element.html#config).
Also I have seen thread in the Android dev group where Mr. Murphy says the "unexpected resume" is "benign": http://groups.google.com/group/android-developers/browse_thread/thread/567410dbfcc163c2.
I'll dig into the source when I get a chance, but I figured I would first just ask the all-knowing hivemind and see if someone already knows: why does this occur, and is it truly benign?
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Feb 20, 2009
I need to suspend/resume a thread from another thread in the same process. I tried to look into thread apis,but I couldn't figured out a way to achieve this.Can anyone pls point me some references to look or give a tip to do this.
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Oct 5, 2010
Is there a way to use ListAdapter in preferences screen ? or i must use only chekboxpreference, textpreferences, etc....
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Aug 6, 2009
Can any body know how we can use the preference & widgets together .
I want to use preferences to show like a list & want to show buttons at the bottom of similar screen?
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Oct 15, 2009
How I can access and modify the system preferences (the options you see on system 'Settings' application)?
Cheersss, Armond
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Jul 9, 2009
I would like to give users a choice of starting one of three different activities by choosing from three mutually choices. And I would like to provide users these choices as Preferences. If I use CheckboxPreference, user can select more than choices. Something like "RadioGroupPreference" would be good but it is not available from SDK. Can mutually exclusive preferences be implemented? Pointers or suggestions are greater appreciated.
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Feb 26, 2009
I'm trying to give an option to users to be able to change the theme to the light one. I can't find any command or anything for this. I know I can set this in the Manifest file but this is not what I'm looking for.
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Mar 7, 2009
Is there a way to launch a dialog (say, the dialog I show to users the first time they launch the app) from a preferences entry? I don't see any examples doing this in the API Demos, nor have I seen it out in the wild. I do see a class called DialogPreference, but this doesn't seem to be what I want.
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