Android : Keep Current Screen (contentView) When L Iaunch New Activity?
Dec 15, 2009
I have an NoContentViewActivity which has no Content View (i.e. I did not call setContentView() in the onCreate of my Activity).
My question is how can I keep the content view of the launching activity on the screen? Right now, I am getting a blank screen whenever I launch NoContentViewActivity? I want the content view of the launching activity (the activity which start the NoContentViewActivity) to show on the screen.
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May 13, 2010
The default behavior of an activity when BACK softkey is pressed is, GO BACK TO PREVIOUS ACTIVITY. If some the same activity is waiting for some response from server or some data updation is going on and then press BACK, I want to wait on the same screen till the current task is completely processed and then move out to the previous activity.
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Jul 16, 2010
I used Toast to make notification, but it seems it will appear even its activity is not in the current screen and some other activity has been started.I want to check this situation, when the activity is not the current one, I'd not send the Toast notification. But how to do ?
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Nov 2, 2010
I want to display a splash screen followed by my trial.class.I am not getting any error but warning as:
Warning: Activity not started, its current task has been brought to the front
I have different-2 approches for this each time this warning is being displayed.
CODE:.....................
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Aug 27, 2010
My app is comprised of a set of reusable Activities that other apps can reuse. For various reasons, I would like my Activities to be launched in context of the invoking Activity's process, instead of always being launched in my Activity's process (default behavior on Android). How can I achieve 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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Nov 5, 2010
The default behavior from my observation is if current activity force closes Android tries to go to previous activity on stack How can I control this behavior? I want force close to close all activities
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May 1, 2010
I have following problem with my application: From my main activity ("activity 1"), there is a menu from which user can launch an action. This action will result in an Intent being received by a BroadcastReceiver, defined in my application. Finally, this BroadcastReceiver will start an activity ("activity 2") to deal with this intent.
The problem is that I have a "quit application" entry in my menu, and I can only finish() currently active activity. ie I am not able to finish "activity 1" from the menu of "activity 2". And I can't use startActivityForResult() as "activity 2" can't be started from "activity 1". Any suggestion would be much appreciated Thank you very much guys, regards.
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Oct 2, 2009
startActivity() displays the new Activity on top of the current one. But how to display it underneath instead? BTW, I'm starting an Activity from another application, if that makes a difference.
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Jul 29, 2010
Is it possible to add an activity on top of the current activity.
For example lets say i click a button, and then it adds a second activity to the current activity. And the second activity only covers a small place at the bottom of my current activity.
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Sep 1, 2010
I have a ViewFlipper that contains Layouts.
Is there a way I can hook up a Class to manage each layout seperately?
Kind of like setContentView(R.layout.main); but I'm not sure how to reference the 3 different layouts in code...
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Nov 18, 2010
Is it possible to create just one class and use a variable for contentview? I am thinking of creating a main layout with loads of buttons with IDs. Once a button is pressed it'll then pass the ID to the class and use that ID to open a specific Layout. One class, multiple layouts. code...
is it possible to make 'main' a variable?
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Aug 11, 2010
I have Serviceļ¼Sometimes current run Activity work in background I don't want to know. I want to know current work interface Activity name?
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Oct 19, 2010
How can I know what Activity has started the current Activity? Is there any specific method like, i.e. getIntent().getCallerActivity() or the only way is saving some information within the Intent using putExtra()?
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Apr 9, 2009
Is it possible to get the currently running activity through Service..?
i.e. I have a service started by an Activity A, and now I want to stop the service by another activty say Activity B.
Since Activity B doesnt know about the service, i want to capture the events in OnKeyDown() of the Activity B in my service...
Is this possible.. How can i get the Activity B's object..?
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May 17, 2010
I am trying to make a task switcher and i succed in it. My only problem is that when I launch activities, they are relaunched as they were new activities ( for instance, I am writing an email, i press home and go into my activity,launch email, and then the app launch the email bout goes back at the inbox and the email is lost) So that's not true multitasking.
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Jun 11, 2009
Is there a function that allows me to get the top most view (the root)?
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Oct 6, 2010
Is there a native android way to get a reference to the currently running Activity from a service?
I have a service running on the background, and I would like to update my current Activity when an event occurs (in the service). Is there a easy way to do that (like the one I suggested above)?
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Oct 19, 2010
I have an application which has 2 screens. When a value is changed in the second screen and when the first screen is called, the value must be updated on the button of first screen.
But I am not able to update the value on any of the widget of first screen. But I am able to see that I am getting the value, But when it comes to updating the same on button it does not happen.
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Jul 1, 2010
I have a TabActivity class A with 2 tabs, a sub activity class B in tab 2.
Now a dialog pops up from the UI in B, once i click the save button in this dialog it goes back to the TabActivity but the tab is set to 1, however i want to set the current tab to 2 once the dialog box closed.
In short i need to acquire the tabHost reference in the diaglo when clicking on the save button.
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May 26, 2010
How would i remove the focus from an activity which has just being installed/started,
so the user's focus will remine on the previous one?
(while the new activity remine in the stack and will work in the background)
the prob is that when i start this new background activity, until i wont press back or home, the ui is stuck. and i would like to fix that some how?
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Oct 30, 2010
So say there's an app running (any app). I'd like to be able to get it's Activity from within a Service that will be triggered to run from a android.intent.action.SEARCH_LONG_PRESS.
Is this possible?
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Nov 9, 2010
I am developing an application and I am displaying images from URl using xml parsing. When Internet gets disconnected I pop up alert window.
Now I want my current activity automatically reboot, when my device connect net.
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Aug 4, 2009
I have been looking for this for a while but I can't find any way of doing it. A contrived example would be a service that simply displays the name of the current running activity as an Ongoing Notification. For instance, when the user is reading a particular email, the name of the activity (hopefully the email title!) would appear in the notifications window and when the user switches to read a text message, the notification would change to show the name of the new activity. Is there a way to do this in Android?
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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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Dec 20, 2009
I wanna know how to pass data from current Activity to paused Activity?
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Aug 26, 2010
how to get font from the previous activity on current activity on canvas
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Aug 27, 2009
In current activity, when user click the back key, I don't what it back to the last activity. Can I add a listener to listen to back key in current activity? When user click "back" key, it actually back to the activity I want it to go.
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Apr 23, 2010
I have attached a menu to my TabActivity, and when a menu item is selected, I would like to do something different based on which view is being currently displayed in the TabHost.
int getCurrentTab() returns me the id of the current tab... but from that int how can I get the instance of the activity running?
I also tried getCurrentView(), getCurrentTabView(), but these return things I can't seem to cast to the class of the current activity.
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May 3, 2010
What I am trying to do is emulating the "Home" button which takes one back to Android's homescreen. So here is what causes me problems: I have 3 launcher activities. The first one (which is connected to the homescreen icon) is just a (password protected) configuration activity. It will not be used by the user (just admin) One of the other 2 (both accessed via an app widget) is a questionnaire app. I'm allowing to jump back between questions via the Back button or a GUI back button as well. When the questionnaire is finished I sum up the answers given and provide a "Finish" button which should take the user back to the home screen.
For the questionnaire app I use a single activity (called ItemActivity) which calls itself (is that recursion as well when using intents?) to jump from one question to another:
Questionnaire.serializeToXML();
Intent i = new Intent().setClass(c, ItemActivity.class);
if(Questionnaire.instance.getCurrentItemNo() == Questionnaire.instance.getAmountOfItems()) {
Questionnaire.instance.setCompleted(true);
} else Questionnaire.instance.nextItem();
startActivity(i);
The final screen shows something like "Thank you for participating" as well as the formerly described button which should take one back to the homescreen. But I don't really get how to exit the Activity properly. I've e.g. used this.finish(); but this strangely brings up the "Thank you" screen again. So how can I just exit by jumping back to the homescreen?
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