Android :: Can I Launch Different Activities On Startup Depending On User Preferences
Nov 2, 2010
I have a ListActivity and a MapActivity. I would like to launch either one of these activities on application startup that has been chosen by the user in a preferences window.
So far the only way I see to launch an activity on application startup is to specify it in the application manifest file using...code...
I am thinking I might have to start an activity that does nothing but looks at the user preferences and then launches either the ListActivity or MapActivity. Seems like a waste to have an activity do nothing but launch another activity. In my research I have not found any solution to this problem.
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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 4, 2010
I am developing one application with map view. I need display the weather depends on user place how can I get the weather report depending on the user lat and lon.
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Aug 20, 2009
I want to load default preferences on app startup (before the user hits my preferences screen). Is there a way to do this using possibly xml and the manifest?
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Oct 14, 2010
Depending upon the user i may need to move it to right ,left,top or bottom.
Should i use animation for the purpose?
Or is there any method to move image dynamically?
I meant the things in android application
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Nov 11, 2010
I am developing game.i am displaying gun object center bottom of the screen.when user tap on screen i need to rotate gun that direction.i done rotating image.but when user tap on screen i need to rotate image that direction.
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Oct 29, 2010
I have a user preference in my app, which gets ued by different activity. I would like to know the best way to utilize those preferences between different activities in my App.
I have this idea to create a shared preference object from the main activity and from there send intents to the different activities to take actions. would it work?.. or just keep calling getsharedpreferences() from every activity?
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Sep 23, 2009
I have some shared preferences (user_id, email) that I want to access from services and classes that are not subclassed from Activity. I have been trying to implement this today and keep hitting roadblocks. In particular, when I try to access getSharedPreferences, I get a null pointer exception. My code is posted below. My goal here is to allow read access the shared preferences to objects and (potentially) services that aren't going to be directly exposed to the user.
<snip> public class MyPrefs extends Service {
public static final String PREFS_NAME = "MyPrefs";
private int user_id;
private String user_email;
private String user_password;
private Editor editor = null;
private SharedPreferences settings = null;
public MyPrefs () {
settings = this.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);
}
</snip>
this.getSharedPreferences line causes a null pointer exception.
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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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Jul 22, 2009
I have a need to create a background service that starts up during the system boot up, and keeps running until the device is powered down. There is no UI or Activity associated with this. I created a class extending the android Service class, and added the setttings to the AndroidManifest.xml file. When I launch this service in the emulator, I don't see this launched at all. I have overrided almost all the methods in the Service class to put log statements, but none of them shows up.
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Oct 19, 2010
I have plenty of applications that I only use like once a month or even less. Yet, many are always on, for no reason. What are my options to make it so that they ONLY run when I need them? I saw that they are apps that constantly watch the processes and kill them every time they appear. That doesn't seem like a great approach, not very efficient. And What if I want to use the app?
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Jun 25, 2010
i am trying to store the user preference whether he checks the checkbox or not ,but when i restart the activity, i am not able to restore the preference. here's what i have tried..................
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Jun 20, 2010
Will the data still be there after the user restarts his / her phone or changes SIM / battery?
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Jan 10, 2010
I'm still in the concept stage so I don't need implementation details. My question is whether it is possible is transfer a JAR file over a socket and use a classloader to launch an activity.
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Nov 9, 2010
I created an app with one activity, and it works just fine. Having though more about the app, I decided to add another activity which be the welcome screen of the app, with a nice logo and some buttons. This app should direct the user to the activity I mentioned before. The only trouble is - I can't find out where and how can I determine which activity should launch first, the moment the app loads. Do I need to create the entire app from scratch, but this time programing the home activity first?
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Sep 3, 2010
I face some problems with activities and it seems that I am stuck here. So, that's the issue: I have two activities extend another one. Code...
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Oct 5, 2010
If I store some user settings and information in shared preferences in my android apps, and then I update the app in the Market, will those settings be erased when the app updates?
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Jul 17, 2010
I have an application with two activities and I'd like to be able to have two icons appear in the launcher, each launching the respective activity within the app.Specifically, I want one icon to launch my main app, and another icon to launch my settings activity. Is this possible?This creates two launcher icons, but they both run my main app instead of the second icon running my settings app. I've tried just having the launcher category but then I don't get an icon so it looks like I need the main action as well.Is this the right approach or should I be declaring two applications in the manifest instead?
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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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Jan 7, 2010
Every time I start my phone it seems that every program in the app catalog starts up. Until I activate the Advanced Task Killer and shut them all down, the thing runs like a hog. I have quite a few programs installed, but I dont use them all all of the time. Why do they all start up and is there any way beside the ATK to stop them? Is there any way to modify the startup files?
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Jun 30, 2010
how to call BarCodeScanner, and return the value to a field.so now, i have a toast that says "successful scan" and then i want to pass the result to a new activity. when i comment out my intent, everything works (minus the passing of data/switching of screen, obviously) but when i run my project as is, it FC's no errors reported by eclipse in code or xml. any insights?
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Aug 7, 2010
I need an app that changes my wallpaper depending on a specified schedule, like say one for the afternoon and one for night. Anything in the market like that?
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Nov 24, 2010
In Android I get the version of the SDK easily (Build.VERSION.SDK) but I need to use LabeledIntent only if the platform is newer than 1.6 (>Build.VERSION_CODES.DONUT) I suppose that Reflection is necessary (I have read this link but it is not clear for a class or to me). This is the code but it gives me an exception because in my Android 1.6, the compiler verifies if the package exists even if the condition is not applied:
Intent theIntent=....;
if(Integer.parseInt(Build.VERSION.SDK) > Build.VERSION_CODES.DONUT)
{
try{
Intent intentChooser = Intent.createChooser(intent,"Choose between these programs");
Parcelable[] parcelable = new Parcelable[1];
parcelable[0] = new android.content.pm.LabeledIntent(theIntent, "", "Texto plano", 0);
intentChooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, parcelable);
activity.startActivity(intentChooser);
}
catch(Exception e)
{
activity.startActivity(theIntent);
}
} else
{
activity.startActivity(intentMedicamento);
}
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Aug 31, 2010
I'm having hard times parsing multiple different XML files on Android using the built-in SAX parser.
Nate and Aron Saunders have helped me with the right approach to this problem but I struggle in implementing it. You can read about it here.
http://stackoverflow.com/questions/3583876/how-to-parse-different-xml-files-using-sax-on-android
I have ten different XML files. code...
And so on. Every root tag is different. Now I know that I could branch the parser to trigger a different event on every root tag but I'm not quite sure I know how exactly do achieve this.
How would I tell my SAX handler that he should parse for AnotherInnerTag with its attributes based on the root tag?
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Aug 22, 2010
I am looking for an app, that say when I go to bed at 2300, it auto silences. It goes back to loud at 0600. When I get to work at 0800, it silences again. Yet, when my GF calls, I want it to always override and ring no matter what time it is.Are there any programs like this that will work for what I want?
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Oct 13, 2009
My job takes me to the courthouse several times a week. If you forget to silence your ringer and the phone rings, the judge takes the phone and you have to travel back to the courthouse at the end of the day to recover it. The judge also gets really really mad and gives lots of grief. So I need a failsafe way to automatically turn off the ringer while in the courthouse. I read this thread Set profile by GPS location about a program named Locale, but it indicated that if the phone loses the GPS signal, Locale will automatically revert the phone to the default profile or some other profile. I come from a Symbian phone where the phone would "learn" every cell tower ID in a given area and then set the phone's profile upon getting a signal from one of those towers. The profile would stick, regardless of losing the signal, unless and until it got a signal from a different tower which was not on the list it had "learned" from the location area. That is failsafe. Is there anything for an Android based phone which will silence the ring on a failsafe basis?
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Feb 24, 2010
What is the best way to launch an app and calculate its launch time in android(if it can be done with some code,then its better)
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Mar 19, 2014
I am trying to implement a functionality when i press the VOLUME DOWN and POWER BUTTON simultaneously; i must be able to run a method code inside my Activity.
public boolean onKeyUp(int keyCode, KeyEvent event)
{
}
From my initial search; it seems that only one such key press event is acknowledged at a time in Android usng the onKeyUp method. Is it true?
In my Android phone, on simultaneously pressing POWER BUTTON as well as MENU BUTTON i am able to capture a screen shot.
Does this feature not acknowledge simultaneous key presses?
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Jan 18, 2012
I am working on a game for android at the moment, and was wondering how i would change the screen depending on orientation.
So if the user turned the phone horizontally then the app would be viewed horizontally if you know what i mean
Also how would i make a timer, so if a button were pressed, how would i say stop for 2 seconds and then go to link?
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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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