Android :: Optimal Activity Stack Order For A Main Menu Button?
Jun 2, 2010
I'm developing an app that starts with a main menu, and then continues through three different steps (activities) to a final activity where the task is marked complete. On this last activity, i have several additional options (add note, share, etc..) and i also have a return to main menu button.
My question is.. how do i stack the activities so that calling finish() on the final activity will return back to the first activity launched? i am currently just starting the new activity via an intent, so pressing back on this screen doesn't return me to home as i would like.
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Dec 4, 2009
Need an example of how to create/start a new activity from the main activity. I have a button click event on the main layout. Originally I just used setContentView(R.layout.secondactivity); which brings up the layout but I don't think that is correct since the secondactivity class is not instantiated at this point yet. I have looked for such an example and can not find one.
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Nov 22, 2010
In android, my app provides a button that the user can click to return them back to the screen that appears when the app is opened (onCreate). How can I set that button to return the user to the main menu?
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Jan 13, 2010
I'm trying from main Activity (MainFile.java) to open a Map as a new intent through a menu. Something like this...
CODE:..............
And I already have set up thing on my manifest.xml with access to...
CODE:........
It worked fine with other File.class, but with the Map.class doesn't seem to be working.
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Jun 9, 2010
All activities in my application require a user to be logged-in to view. Users can log out from almost any activity. This is a requirement of the application. At any point if the user logs-out, I want to send the user to the Login Activity. At this point I want this activity to be at the bottom of the history stack so that pressing the "back" button returns the user to Android's home screen.
I've seen this question asked a few different places, all answered with similar answers (that I outline here), but I want to pose it here to collect feedback. I've tried opening the Login activity by setting its Intent flags to FLAG_ACTIVITY_CLEAR_TOP which seems to do as is outlined in the documentation, but does not achieve my goal of placing the Login activity at the bottom of the history stack, and preventing the user from navigating back to previously-seen logged-in activities. I also tried using android: launchMode ="singleTop" for the Login activity in the manifest, but this does not accomplish my goal either (and seems to have no effect anyway). I believe I need to either clear the history stack, or finish all previously- opened activities. One option is to have each activity's onCreate check logged-in status, and finish() if not logged-in. I do not like this option, as the back button will still be available for use, navigating back as activities close themselves. The next option is to maintain a LinkedList of references to all open activities that is statically accessible from everywhere (perhaps using weak references). On logout I will access this list and iterate over all previously-opened activities, invoking finish() on each one. I'll probably begin implementing this method soon.
I'd rather use some Intent flag trickery to accomplish this, however. I'd be beyond happy to find that I can fulfill my application's requirements without having to use either of the two methods that I've outlined above. Is there a way to accomplish this by using Intent or manifest settings, or is my second option, maintaining a LinkedList of opened activities the best option? Or is there another option that I'm completely overlooking?
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Nov 18, 2010
I am working on an application where I need to go to the next Screen form the Main Actvity when I Click on the Image Button of the Main Activity Screen. I had searched a bit on Net regarding this and found something like the OnClickListener method. I am still stuck for what exactly I want to do actually.
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Jun 25, 2010
I have a problem on going back (clicking the Back button) from sub-activity to main activity: from my main activity I launch a new one (with passing some extras). code...
In the started activity I am getting data from extras and showing, etc. So everything works very well until I click Back button to return back to main activity. Then main activity appears but directly after - grays-out. I can't do anything there anymore... This "grayed-out" style looks something like there should be a dialog displayed, but there is no dialog shown, just the whole activity is pushed down/disabled instead...
One another interesting thing I noticed - that activity is still alive in background, because if I click "Search" button the Quick Search Box appears on top of my activity and if I click Back button then (to cancel it) - it disappears and my activity then becomes fully functional again (gray-out effect simply disappears...)
Tried watching logcat, but it shows nothing useful, no exceptions thrown, just this text always comes up:
W/KeyCharacterMap( 564): No keyboard for id 0
W/KeyCharacterMap( 564): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
What could cause this problem?
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Nov 2, 2009
There is a stack of activity i want to call the activity from that stack , My question is that is it possible to check from that stack and call that intent.When i press home button and again when i press the executable it should start the activity where i have left .Is it possible?Any example related to the same would be great help
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Mar 3, 2010
So I have an app with Activity A. The layout on the activity is dynamic genearted. So it's possible that on Activity A a user hits a button that goes to "A" and the new page looks different, then a user clicks another button to go to "A" again. Now I have 2 Activities in the history stack. A, A, and currently on A. Is it possible that if a user clicks a button that the whole Activity stack is cleared in a scenario such as this?
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Apr 27, 2010
How to finish any previous activity in application stack (at any level , I mean not immediate parent) , from current activity like on some particular event I want to invalidate this previous activity?
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Jul 26, 2010
How can I make sure I only retain one copy of an activity on the stack when called from non-activity? When called from an activity I can just add the FLAG_ACTIVITY_REORDER_TO_FRONT flag to the Intent, but how can I do this from e.g. a widget or a notification?
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Dec 22, 2009
All the current discussions involves clearing all activites above an existing activyt, but I'm trying to find a way to clear all the activities before the latest activity in the stack. So my scenario is A -> B -> C and then when a user goes to Activity D, activies A,B,C should be cleared from the activity stack. FLAG_ACTIVITY _CLEAR_TOP seems to only clear any activites above an existing activity. Anybody run into this scenario and found a solution?
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Sep 17, 2009
i want to clear the activity stack and replace it with a new activity as the root activity, even if that activity exists somewhere on the stack (or not). i see FLAG_ACTIVITY_CLEAR_TOP and FLAG_ACTIVITY_NEW_TASK, but it's not obvious to me how to use those in conjunction to achieve what I want. it's like i want to completely restart the task with some activity that i specify as the new root.
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Aug 4, 2009
i have a set of activities on my stack Say A-->B-->C. when i launch the activity named 'D' it should get fired as the root activity of my application and all the other activities(A,B,C) should get cleared from my stack once Activity D is launched.Can any one tell me as how to do this
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Apr 23, 2010
I have the following activity structure in my application A simple "splash screen" activity is started when the application is fired up (let's call it "Splash"). This activity starts the main activity when the user presses a button (I will call it "Main"). Main can in turn start two activities from the menu. The first activity presents a simple form (let's call this one "Form"), the second is a MapActivity that presents a map (it is called "Map").
Main, Form, and Map are declared exactly the same in the manifest:
<activity android:name="fully qualified activity class"
android:screenOrientation="landscape"
android:configChanges="keyboard|keyboardHidden|orientation"
> <intent-filter>
<action android:name="android.intent.action.DEFAULT" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter> </activity> When Main is active and I start Form and press "back", Main comes up again. Pressing "back" again brings up "Splash". Nothing strange here.Now comes the strange part: when I am in Main, start Map, and press "back", Main comes up as expected. But pressing "back" again just restarts Main. A second press on "back" is needed to bring me back to Splash!So it seems that starting the Map activity somehow results in Main ending up on the activity stack twice while starting the Form activity does not! Both Form and Map are started like this: start Activity(new Intent(this, MyActivity.class)); I don not catch the back key in any activity.Any clues on what is going on or how to debug this?
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Nov 4, 2009
I'm new android and i want to know how to remove more than one activity from stack. We use finish() for closing particular activity but i wanna close more than one activity underneath it, at a time.
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Jul 19, 2010
Im writing a program that offers a quick reply dialog upon receipt of an SMS.
However, I am getting an unexpected result. When I receieve an SMS, the appropriate dialog activity comes up displaying the correct phone number and message, however there is a second activity behind it that is the 'default' activity in my program (it is what opens when i launch my application)
I do not want this second activity to come up. The quick reply activity should come up by itself over top of whatever the user was doing before.
The 'floating' activity:
CODE:.........
The call to the activity inside an onReceive()
CODE:..............
The Manifest:
CODE:.................
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May 16, 2010
I'm writing an application that starts with a loading activity. In the loading activity the app requests html from web and parses the html, then it sends the parsing result to the main activity. The main activity has several tabs, and contents of these tabs are based on the result of parsing.For example, the result of parsing is a list of strings ["apple", "banana", "orange"], and I need to pass this list to main activity, so that the main activity can create three tabs named after three fruits.I would like to know if there is any way to pass a list of strings among activities, BTW, is it the common way of do this?
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Jan 10, 2010
I created an application which enables the user to set whether he wants to receive notification while the application runs in background mode. If the notifications are enabled an activity should be started (the dialog should appear on the screen).
I tried to enabled it the following way:
CODE:...........
This is the method from main activity. When onPause() is executed isRunningInBackground is set true.
When I tried to debug it when the main application was running in the background the line
startActivity(intent) had no effect (the activity didn't appear).
Does anyone know how to midify the logic in order to start an activity from the main activity when the main activity is running in the background (after onPause() is called)?
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Jan 10, 2010
I hav an app that is like a relational database. There is a main app activity that users manage things with. There is also a widget that will display important info and add data to the database. When the widget is clicked, a configure class displays a way for the user to edit data. When the configure activity is done, the widget is updated and instead of going back to the home screen, the apps main activity is started. I can't find where the main activity is being called from. Wouldn't I have to create an intent and start Activity() to get this behavior? When done updating, I want the home screen and not my app.
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Nov 7, 2010
I have a main activity, then i call a new activity intent from this. Lets call this SecondActivity. Then from my secont activity i call a browser intent. Then my browser intent call my second activity's onNewIntent method.Evereything work fine, but when i click on "back" button on my phone on my second activity, i will not going to my main activity, but the browsers activity, why?
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Aug 30, 2009
All Do anybody know how to make the STK icon available in main menu. Now, I can't see the STK icon in main menu, even though the RIL has sent the message "RIL_UNSOL_STK_PROACTIVE_COMMAND" about SET UP MENU to upper App layer. And RIL also receive correct terminal response (RIL_ REQUEST _STK_SEND_TERMINAL_RESPONSE) from upper App layer.
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Apr 29, 2009
On cupcake builds we are unable to open IM app from main menu. When we open the app, it gets closed immediately and adb logs show the following error.
CODE:......
It is trying to load some thirdpartyplugins in packages/apps/IM/src/ com/android/im/app/FrontDoorPlugin.java file. Here it is getting plugins count zero and after that the app gets closed. Do we need some thirdpartyplugins for this to work?
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May 3, 2010
I am looking for an application that would let me organize my main Android menu using folders or groups of icons. Preferably in a similar way iPhone OS 4 does it but I'm not picky and anything that would help me to sort out the cluster of programs I use would be appreciated. I only look for two features in this application:
1. That it organizes in groups (under one icon) or folders applications in Android main menu (and not on the main screens with widgets).
2. That it was free as there's no paid apps at the moment in the Market where I live.So, if anyone could help me or know of an application like that I'd appreciate all the help!
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Apr 25, 2010
Is there any way out there to organize your apps menu other than by alphabetical order? When you have a heaps of different apps and are always trying new ones like me it's not always easy to find that one that has a name that relates nothing to its function.Ideally I'd like some way of making categories in my app menu and and grouping all my utility icons, all my game icons etc.
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Jun 24, 2010
I want to hide my application icon from main menu at the run time. I believe that a filter with category Launcher in the application's manifest file is responsible for the application's presence in the main menu. Is there any way to change the category at run time? or any other way to hide the icon from main menu?
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Nov 3, 2009
Is there a way to clear our Activity stack? For example, a user in my app progresses through these activities, one is launched from the previous activity: ActivityA -> ActivityB -> ActivityC if the user is now looking at ActivityC, and they hit the back button, they will go back to ActivityB. Is it possible to add a menu to ActivityC where the user can clear their activity stack, and then launch a new instance of ActivityA? This would be so the user can jump to a particular activity in my application without getting confused with the back button + history,
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Mar 10, 2010
My main activity A has as set android:launchMode="singleTask" in the manifest. Now, whenever I start another activity from there, e.g. B and press the HOME BUTTON on the phone to return to the home screen and then again go back to my app, either via pressing the app's button or pressing the HOME BUTTONlong to show my most recent apps it doesn't preserve my activity stack and returns straight to A instead of the expected activity B.Is there a setting I'm missing or is this a bug? If the latter, is there a workaround for this until the bug is fixed?
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Sep 20, 2010
My understanding is to quit the app I need to call finish() on all activities up to the root activity. However, how do I navigate up activities in app activity stack from current active activity?
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Sep 1, 2010
how can I assure I always go back clicking on custom menu option to previous activity. I think it is a good idea to start new activities by startActivity(context, XActivity.class) but then when option is selected I should call finish on that activity or again call startActivity(this, previousActivityName)?on the other hand android has all activities on a stack so clicking goback button on a phone I will always go back to previous view, so how can I get this stack.
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