Android :: Closing An Activity On OnCreate

Nov 11, 2010

I'm opening an Activity using this:

startActivity(new Intent(Parent.this, Child.class)); And on the child, I have this code on the onCreate function (the if contains more than just true, of course): public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); if (true) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setPositiveButton("OK", null); builder.setTitle("Error"); builder.setMessage("Connection error, please try later.") .show(); finishActivity(0); return;}}

Why is the activity not closing? I get the alert box, but then I have to tap the "back" button to go back.

Android :: Closing an activity on onCreate


Android : Closing Activity Completely / Process Killed By Activity Manager Service

Aug 2, 2010

Whenever the memory needs to be reclaimed, the process is being killed by Activity Manager Service in killPidsForProcess. I have a back button in my activity window on right corner of the title bar.

I want to kill the activity completely on clicking the close button. Can I reuse the same function and will it have any major effect? Please help me out in this.

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Android :: Activity Constructor Vs OnCreate

Jul 21, 2010

I understand that Android Activities have specific lifecycles and that onCreate should be overridden and used for initialization, but what exactly happens in the constructor? Are there any cases when you could/should override the Activity constructor as well, or should you never touch it?

I'm assuming that the constructor should never be used because references to Activities aren't cleaned up entirely (thus hampering the garbage collector) and that onDestroy is there for that purpose. Is this correct?

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Android :: Database Activity OnCreate()c

Nov 19, 2010

I know that network activity and expensive operations should not be done on the ui thread, but what about database activity?

I have an activity that, when started, I query an sqlite database and dynamically populate rows in a tablelayout with an inflator. I do this all in the oncreate() method. Should this be done in a separate thread?

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Android :: Oncreate - Intent Launches My Activity

Sep 30, 2010

Android will call onCreate() of my activity whenever it is launched.

In the onCreate() of my activity can I tell what intent launches my activity?

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Android :: How To Do A WebView / ListView In Same Activity OnCreate?

Feb 10, 2010

As you can see, I first create a webview. Then, I want it to immediately disappear. Then, I want the Listview to come up. But the problem is, I can't do Listview if I don't do ListActivity but then I can't do Activity. Code...

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Android :: Parent And Child Activity OnCreate?

Jul 2, 2010

I have a parent activity, and a child activity that extends the parent activity. When the parent starts the child activity,

Which onCreate gets executed first? The child's or parent's?

There is a particular variable I am setting in the Child activity's onCreate method, and right now, it looks like it takes a while to get to the Child activity's onCreate, and so the methods in the Parent are reporting an empty variable. Whereas when I make the Parent sleep for a while, it reports the correct variable.

CODE:............

So, basically, even after the Parent starts the Child, it still returns "Parent Value", but when I have the thread sleep, it return "Child Value".

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Android :: Closing More Than One Activity In Activity Stack

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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Android :: Changing Activity - Without Closing The Second And Third Activity?

Jul 20, 2010

I am in my fourth activity and I want to come back to the first activity directly (without closing the second and third activity). How to change to the activity directly?

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Android :: Opening A Context Menu In OnCreate Of An Activity

Aug 9, 2010

I have a need to capture some user input when an activity opens for the first time. I'm hoping to give the user a list of options to select from, which will be pulled in dynamically. I'll then store the selected value locally for future use. I'm not finding a way to do what I'm after and was wondering if anyone has run into this before and how they solved it.

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Android :: ExpandableListView - Exception In The OnCreate Method Of An Activity

Mar 3, 2010

I am encountering an exception in the onCreate method of an activity.

CODE:.......

The onCreate method is as below.

CODE:......

The layout view XML is as below.

CODE:..........

I've already changed the ID of the ExpandableListView to "list". But it is not effective.

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Android : Webview - OnCreate Always Get Called When Activity Comes To Foreground

Mar 29, 2009

I launch my TestWebView activity. After my web page is loaded, I put the app in the background by pressing the Home key. Then I bring the TestWebActivity back to the foreground. Unexpectedly, TestWebView's onCreate() is called when I bring the activity to the foreground. But onDestroy is never called. This same thing happens every time I tested. It appears the old TestWebView was not completely killed so there are possibly duplicate web clients running.

My code: .....

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Android :: Can't Call Service Function In Activity's OnStart / OnCreate?

Sep 28, 2009

My activity bind a service. I want to call the service's function in activity's onStart/onCreate function, but it doesn't work. The service started sunless but the connection is null. When I just call the service's function in other function (onClick for example),

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Android :: Parent Activity Runs OnCreate Before OnActivityResult Is Called - Sometimes

Aug 5, 2010

The order is:

A: startActivityForResult( B ) B: <dostuff>, call finish() A: onCreate <---- what's this all about A: onActivityResult

This happens for a tiny minority of users. I havn't been able to reproduce or find any common elements. A is the launch activity.

CODE:..............

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Android :: Activity Execute OnDestroy() / OnCreate() Method When Push On Keyboard

May 2, 2009

I use sdk 1.5 version and same to my handphone, my handphone is use G1. Now i test my application on my handphone. When i push on keyboard, i found system will destroy current activity(execute onDestroy() method) and execute onCreate() method again. So i will all current status and all datas. I don't wish this happen, how to block system execute onDestroy() and onCreate() when i open and close keyboard?

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Android :: Check Condition Inside OnCreate() Of Activity And Display An AlertDialog?

Aug 18, 2010

I am new to Android and this is my first question here so please go easy on me.

Is it possible to check some condition inside onCreate() of an Activity and display an AlertDialog?

I am creating an AlertDialog anonymously in Oncreate() and calling show on that instance but the AlertDialog is never displayed.

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Android :: Voice Recognition Activity Called In OnCreate Method / Causes App To Load Slowly

Oct 1, 2010

In my android app I call the voice recognition in my onCreate method of my startup activity. I have made it a preference to start up with the voice control or not. However, the app takes about 5-7 seconds to load when voice recognition is on. When it is off, the app starts almost instantly. Below is sample code, I have added Free_Form, max_results 1, and a custom prompt to mine.Why would calling the normal android speech recognition take sooo long to load in my OnCreate method?

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Android :: Closing One Activity From Another

Sep 23, 2009

Is there anyway to close one activity from another? I want to go through a whole bunch of activities once i get to the last one close all the previous ones. i cant close them as i move on to the next one because i want to be able to go back unless ive got to the last one.

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Android :: OnCreate - Cant Modify

Aug 21, 2009

My prob is the following: My android application has the class TestActivity (entrypoint) -my app uses "library.jar" wich contains J2ME classes, used as library -library.jar also includes "UIActivity" [can spawn several dialogs] wich is called by a (j2me) class of library.jar -I only have the .class files of the j2me-lib stuff, so I cant modify them, but I can do so on Android-classes

so... the short form:

CODE:.............

finally I get the error:

CODE:.............

Do I have to use Services instead of Activities? But afaik I have to give a reference of an activity to spawn dialogs.

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Android :: Using OnCreate DrawableState

Nov 16, 2010

Leaving aside the lamentable wording of the documentation for this method, it's not really acting as I hoped for an ImageView. I call toggle() from the onClick method of the view but the view system does not redraw my drawable with the checked state. However, if I initialize CHECKED_STATE_SET with android.R.attr.state_checked then the view is draw with the checked state.

So apparently my call to setImageState is not updating the state of the ImageView. The documentation for setImageState is totally blank in the case of an ImageView. What does this mean?

Here's my code:................................

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Android :: Can You Explain OnCreate And Bundles?

May 22, 2010

I have been looking it up and I just cant seem to wrap myself around the onCreate and Bundles. I understand that the onCreate is called when the program starts but its how the Bundles get passed around and how they are pertinent. Can anyone try to put this into plain english because I cant seem to find it well described.

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Android :: OnCreate And Orientation Change

Apr 28, 2010

I have an activity that checks stuffs online when it's created (is the GPS on and if not it asks if the user wants to turn it on).

The problem I'm having is that it is also doing it everytime I change the orientation of the screen.

I've read some comments on onConfigurationChanged() but is there a better way to be sure I'm checking the GPS only when the activity is first created?

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Android :: Can't Put ProgressDialog In OnClick() Other Than OnCreate()?

Jul 30, 2010

I try to call inside onCreate() it is ok but not onClick(). How to make it work?

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Android :: OutOfMemory Exception In OnCreate

Oct 2, 2010

I'm having a hard time resolving a crash report. It's an OutOfMemory exception that occurs during the setContentView in the onCreate of my main activity.

I just want to be sure I understood Android LifeCycle well :

1) The onCreate of my main activity is called once and only once during the life time of my application ? Is that correct ?

2) Just like for the big bang, before the oncreate of my activity, nothing exists for that activity, so memory consumption is zero, no objects exists right ?

So what can cause that sometimes, with random framework and devices, I get an OOM exception ? I mean if say my background image is causing this, it should blow up everytime, on every device, shouldn't it ? I mean the result should be reliable.

The background image is a standard jpg : 360*480 weighing 37kb, nothing fancy really :s

The crash report below :

CODE:.....................

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Android :: Launching Youtube In OnCreate?

Nov 6, 2009

CODE:.......

Phone was an HTC My Touch. I got the prompt to choose what activity, browser or youtube, chose youtube.

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Android :: Callback URL Calling Oncreate

Jul 30, 2010

I am making twitter application in which i open browser for user authentication and i pass call_back URL when launching authentication browser.

Problem is after authenticating it is calling again oncreate of TWitterShare class instead calling onNewIntent method, why is that ? my another class working fine i am unable to find difference any idea by looking at the following ocde why it is calling oncreate again ?

CODE:...................

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Android :: Nothing Past OnCreate Is Happening

Aug 23, 2010

I got this class, and nothing inside the onCreate is happening? Does it not automatically get called upon initialization?

Code is below.

CODE:......................

Doing this results in a "application has stopped unexpectedly. Please try again". If I initialize the string to some set of characters instead of null, it'll just stay that way. Should it not do what is inside the onCreate() and make that change?

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Android : What Is The Lifetime Of A ContentProvider - After OnCreate

Aug 17, 2010

What is the lifetime of a ContentProvider in Android? After onCreate() is invoked, will the ContentProvider persist unconditionally for the lifetime of the process?

My ContentProvider manages a list of records, but only 1 is designated "active" and will be accessed by different applications a lot. I was wondering if it's safe to cache the index of this active record in memory as a member of my ContentProvider to speed up lookup.

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Android :: Can't Start MPlayer From OnCreate / Why Is So?

Jul 14, 2010

Why if I start the MPlayer from the onCreate it doesn't start?
I tried also from onStart(), but the only working way was from onTouch or on key press.

Any idea how to start it without any additional user input needed?

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Android :: Should StartActivity Always Run Started Activities OnCreate?

Aug 10, 2010

I have a main activity and a sub activity.The main activity starts the sub activity using startActivity, and passes an object in the intent.The sub activity reads the object out of the intent in its onCreate action.The sub activity updates the object, then returns to the main activity using startActivity, again passing the updated object back.However, the main activities onCreate function is not called, so the code it contains to read the passed object does not run.Further investigation indicated that the main activity onPause event is firing, i.e. it is only paused when the sub activity runs, so when the sub activity starts the main activity again, it just on Resumes.Does anyone know if there would be any disadvantages if I moved my data restore/store activities to the onResume and onPause events?I'm not using the onCreate saved Instance State, should I be?

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