Android : Navigation Into GridView Does Not Trigger OnItemSelectedListener / Fix
Oct 12, 2009
I have a layout that looks like this (some attributes removed for brevity)
<RelativeLayout>
<ImageButton
android:id="@+id/button"
android:nextFocusRight="@+id/gridview"/>
<GridView
android:id="@+id/gridview" />
</RelativeLayout>
When I navigate using the DPAD from the button to the gridview, the OnItemSelectedListener is not fired. However a new layout pass is perform. Why is this ? Is this an android bug & my bug?
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Mar 16, 2010
I'm using a ListView that is setup like this:
CODE:................
In my code I add an OnItemSelectedListener to the ListView like this:
CODE:................
my Activity implements the listener like that:
CODE:........
My hope was, that I would see this debug output the moment I click on something in the list. But the debug output is never shown in LogCat.
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Sep 13, 2009
1. When does OnItemSelectedListener get called?My expectation was that when an element of a ListView was clicked/ touched that the OnItemSelectedListener would be called. My OnItemSelectedListener is not called when a list element is clicked/ touched. (It is called if the list has focus and I move through the list with the arrow keys in the emulator) Is that the way it works? This ListView has an adapter that supplies TextViews for drawing the list elements.
2. With a ListView set up this way who handles display of selected list items? Does the ListView do it or should the adapter configure the views it supplies to make them look "selected?"
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Nov 20, 2010
When I change the orientation of my screen in Android, an OnItemSelectedListener from a Spinner is called. It's not just the emulator, it also happens on a physical phone. How can I stop this from occurring?
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Mar 3, 2010
I'm creating a spinner and I've added an OnItemSelectedListener to it. However I've noticed that it fires on create. Now I was wondering if there was a way to ignore/discard it. I know I could use a boolean value, but that's a bit "dirty".
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Nov 17, 2010
I'm in a trouble managing a spinner. I have a spinner with its adapter. I initialize the spinner with a list of values when starting my activity. Then I force the selected value to be the one used in the object that I manage.
Once the screen is initialized :
When the user selects a value in the spinner, according to the selected value, I may continue (or not) to another activity for let the user choose a complementary and necessary value.
If the user "cancels" this second activity, I want to rollback the spinner to its previous selected value, and cancel some actions made in the meantime.
If the user goes to the end of the second activity, everything is fine and I want juste to refresh the spinner display with the datas selected in the second activity (I overload the getView method in the adapter to do this).
Overall, I can easily do all of this, however, when I force the selected value in the spinner at the begining of my activity, or whene returning back from the second activity by "Cancel", the change value event is catched and the second activity is triggered (the user did not click anything at all).
How would you allow the second activity to be lauched only if the change of the selected value in the spinner is due to a manual action from the user, and prevent that same second activity to be launched when the value of spinner is changed "in the code "?
I tried many solutions, as setting a boolean into the adapter that tells if the next event will be raised because of an "in the code" action.
Or also putting a boolean in the adapter that tells if the adapter has initialised itself, and I force that boolean to true on the forst change catched event.
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Nov 3, 2009
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Feb 5, 2010
How can I trigger the software keyboard and add listeners to it's keys?
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Feb 26, 2009
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I asked about this before and thought I had figured it out myself (thought it might be a short burst of vibrate) but apparently not.
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Apr 9, 2009
I want to expose a portion of my app with an intent that will only display a simple dialog box for system setting. The only way I currently know how to do this is to have an activity that accepts an intent. In the activity I don't use setContentView. I only create and show the dialog. The activity is finished after you press OK from the dialog.
This is kind of okay, but the activity shows as a black backdrop under the dialog, until you press OK which brings you back to the last application. I'd like to just be able to show the dialog on top of the calling Activity. Any idea on how this can be done? CAN it be done?
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Dec 2, 2009
Is there any way to create triggers on different databases? my requirement is like:-
database: a1.db consist table: t1
database:a2.db consist table: t2
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Jun 26, 2009
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Apr 21, 2010
Can anyone give a hint if you know why there are some ACTIONS that do not trigger their associated receivers when they are registered in the manifest while they are received when they are register through registerReceiver() ? For instance, when I declare: <receiver android:name=".MyReceiver"> <intent-filter> <action android:name= "android.intent .action .NEW_ OUTGOING_CALL" /></intent-filter> </receiver> if the application is NOT running My Receiver is never invoked. But now, if I register the intent from inside a service, MyReceiver is invoked properly
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Dec 18, 2009
Android supports an event onLongPress. The question I have is 'how long' (in milliseconds) is the 'press' to trigger the event?
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Oct 27, 2010
I have a simple overlay for a Google Map: http://pastebin.com/Rg8miMSh and I add/remove items on it depending on the zoom level. After removing/adding I call populate on the overlay and invalidate on the map view. Everything works just fine, except 1 glitch: after an item was removed, if I tap its location onTap is still triggered and because the OverlayItem is not there anymore i get java.lang.ArrayIndexOutOfBoundsException in com.google.android.maps.ItemizedOverlay.maskHelper(ItemizedOverlay.java: 562) (full stack trace - http://pastebin.com/KThn4ZLE )
Anyone knows why this is happening or how to fix it? Initially i called clear and added all items all over again which didn't seems to cause this problem. However having many items this was becoming a performance issue. Adding/removing only the difference works much faster and I would like to keep this method.
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Nov 17, 2010
If (in Android) I have an EditText box, how can I trigger an event when the user has finished entering data and hits return/Next?
I have tried using the code below but it seems to have no effect. I also get an 'The method onEditorAction(EditText, int, KeyEvent) from the type new extView.OnEditorActionListener(){} is never used locally' error.
myEditText.setOnEditorActionListener(new EditText.OnEditorActionListener() {
public boolean onEditorAction(EditText v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_NEXT)}
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Aug 15, 2010
I want to show the softkeyboard, but it does not work. Here is my code...
When i touch the screen, the softkeyboard does not appear, but the alertDialog "edit text" appears, which appears on normal edittexts when you long touch them.
This additional code in the onCreate has no affection:
InputMethodManager input = (InputMethodManager)
getSystemService(Context.INPUT_METHOD_SERVICE);
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Nov 18, 2009
I am rendering an EditText as one element of a list-style AlertDialog (which is backed by the default ListView implementation). I sort of expected that this circumstance would not change the behavior of EditText, but it does: a click on the EditText does not spawn the soft keyboard anymore.
After an hour of messing around with focus settings and click handlers I got fed up and debugged into InputMethodManager.showSoftInput(), and found this:
CODE:....................
The problem here is that mServedView is the ListView that's backing the dialog, while view is the EditText, and ListView.checkInputConnectionProxy() does simply return false in the default implementation of ListView (to be overridden by subclasses).
Worse, I couldn't find a way to set a custom ListView which allows proxying IME reuqests; AlertDialog.Builder.setView() accepts a custom ListView, but this is not the ListView that InputMethodManager sees.
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Apr 15, 2010
Is there a way to automatically trigger the installation process of a just downloaded apk ?
Currently after I download the package , nothing happens unless I click the package ,in which case the packege installer is launched !
The tomcat server from where I download the package has in the web.xml file the following code...
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Dec 3, 2009
I have a requirement wherein I need a list of all the contacts that are edited/changed.
As per the Android documentation,
_SYNC_DIRTY
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So, I was wondering if I can create a SQLite TRIGGER on the contacts database. Such that, everytime a contact is edited, the edited contact id is populated into a different table which I can read later from my application.
I tried this...
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BEGIN
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But a few problems here...
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All this in Android 1.6 Also, I am not sure about the permission to access native contacts database on Android.
Is there any other way of achieving this.
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Sep 27, 2010
I am trying to build an app on my wife's phone that pranks her on April 01, April Fool's day of course. The app is going to change her background to look like the screen was cracked, the background is very convincing when I try it on my Droid (I was pranked similarly).
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Would it be necessary for my wife's phone to load this prank application in the background each time she reboots her phone? I am assuming yes, as I believe this prank application would most likely invoke a broadcast receiver to "listen" for April 01, 2011?
If the application doesn't need to load each time in the background, what facilitates Android alerting my application and firing it when April 01, 2011 comes around?
I hope that makes any sense, basically, I want to ensure this application runs on April 01, 2011 even if my wife's phone crashes or reboots.
What would be the most straightforward method of making this work? I apologize if I don't understand broadcast receivers properly, this is quite the new concept which I am not use to. The Service and Broadcast Receiver functionality is native to Android and not any other language, no?
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Sep 30, 2010
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I don't care if i have to kick it off with javascript, or a href, it just has to be embedded in the html.
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Aug 13, 2010
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Jun 13, 2010
I've been searching a way to implement an intent so when a user clicks on a notification, an specific method from an activity is executed (or an specific behavior happens). Right now I'm thinking about using broadcast but I don't know if this is the best way to implement this functionality. How would you implement it?
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Aug 4, 2010
I need to generate/trigger a long key press event of a button in Android.Searched on net but not able to find any answers.
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Jun 11, 2010
I want to trigger an application after the arrival of the sms. I using android based mobile phone.
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Nov 15, 2010
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May 16, 2012
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[code]...
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Sep 29, 2011
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