Android :: Checkbox In List Being Checked Unexpected
Feb 16, 2010
I have list of checkboxes in list binded by Custom simpleCurserAdapter. in my Custom simpleCurserAdapter ive override the newview and binview with my modifications. ive managed somehow to do multichoice.. wierd thing after i delete any item from my list , the first item's checkbox is being checked all of a sudden.. how does that happen? how can i solve it?
code: my curser SimpleCursorAdapter class:
CODE:......
I couldnt find another way of doing this, but this is how i set listeners to my checkboxses
CODE:.....
Now this is code part from the ListActivity class which desbribes the button which deleting the checked Box items
CODE:......................
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Oct 30, 2010
I've got a dialog which shows a list of checkBoxes. I'd like to set different boxes checked each time the dialog is showed. But that only works the first time.. I want it work every time the dialog is showed!
This is my code...
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Jun 25, 2010
I am trying to use R.layout.simple_list_item_multiple_choice with ListView. CheckedTextView is used in mple_list_item_multiple_choice.xml, but how can I make the checkbox be left aligned instead of right aligned?
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Sep 29, 2010
I'm new to android, please help me how to save the state of checkbox,
i.e.
I've ListView with checkbox, three textview and again checkbox. I wish to save the checked state of item(s),
how to save the state of checkbox.
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Jul 1, 2010
Currently I have a list view within it each row has a checkbox attached. I would like that once any checkbox is checked, at the bottom of the screen a view displays, and once none of the checkboxes are checked, the view automatically disappeared. Possible to do this?
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Jul 7, 2010
Instead of having a check mark for the icon, I want a custom star (I have checked and unchecked icons). Can this be done through a property? Or must I declare a custom widget that derives from Checkbox?
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Feb 13, 2010
I have a list view having several items and it is multichoice list. I want to display the checked item of list view. how i can do this.can anyone help me?
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Jun 24, 2010
I have simple list to be filled in from the database along with a checkbox. I need a handle to all the checkboxes selected. Whn the CLEAR button is pressed at that point I need the row ids of all the selected check boxes to delete them. To do this :
My list.xml file looks like this :
CODE:......
and my data_entry.xml looks like this:
CODE:............
Now: I have list.java file where I am populating the list as follows:
CODE:.....................
Now where do i give the handle to the heckbox cause anywhere else it would give me a null exception as the data_entry contains the checkboxes. Plus I need a listener to handle the checkbox status?
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Nov 3, 2010
How to create a List Preference in checkbox version?
I know how to use ListPreference... but I need multiple selection like in Alarm application on "repeat" preference...
like this, http://i1108.photobucket.com/albums/h412/Tek_Yin/checkbox.png
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Aug 1, 2010
I want to show automatic checklist in android. For example I can have 4 list of item with unchecked check box adjutant to that.After 5 sec. delay I want to check the first item then move on to second. At the end of 20 sec. I should have all 4 check box checked one by one.Any idea how should I go on doing this ? I can use list view with checkbox option on.right?I am a .net programmer and this is new experience for me so any comment / advise is appreciated.
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May 20, 2010
I need to implement a list view with checkbox and each item should be associated with images.
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Apr 21, 2010
i have problem to get event of list view field when i am adding checkbox in listview. my problem is to get the status of check box form every row of the list view, either it is check or not, according to that i have to do operation.
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Mar 17, 2009
why CheckBox is always null.
<CheckBox id="@+id/checkbox" android:layout_width="wrap_content" android:layout_height="wrap_content" />
code file-
package com.reblogr.reblogrclient;
public class Test extends Activity { /** Called when the activity is first created. */
public CheckBox checkbox;
@Override public void onCreate(Bundle savedInstanceState) { ....................
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Nov 21, 2010
I'm getting a "SAXParseException: Unexpected end of document" error when trying to parse an xml document on android. The document in question is from the google weather api, but it seems to throw the same error regardless of the xml file in question (as long as the xml is valid) so I suspect it's a problem with my approach, rather than the xml. This is being done as a learning exercise, so I've probably (hopefully) overlooked something obvious. I've run the xml through an online validator, and it comes back as being well formed. (Can't tell me if it's valid as I don't have a DTD, but I dont think I need the DTD to parse the xml). This is the code that I'm using to try and parse the file:
private void refreshForecast() URL url;
try { url = new URL( "http://192.168.1.66:8000/google4.xml");
URLConnection connection = url.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if (responseCode == HttpURLConnection.HTTP_OK) {
InputStream in = httpConnection.getInputStream();
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
// falls over here parsing the xml.Document dom = db.parse(in);
} } catch (ManyExceptions e) { ....
} A cutdown version of the xml that produces the error is:
<?xml version="1.0"?>
<xml_api_reply version="1">
<weather>
<forecast_information>
<city>Hamilton</city>
</forecast_information>
</weather>
</xml_api_reply>
The stacktrace is:
11-20 06:17:24.416: WARN/System.err(406): org.xml.sax.SAXParseException: Unexpected end of document
11-20 06:17:24.416: WARN/System.err(406): at org.apache.harmony.xml.parsers.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:131)
11-20 06:17:24.416: WARN/System.err(406): at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:110)
11-20 06:17:24.426: WARN/System.err(406): at com.dave.nzweather.WeatherApp.refreshForecast(WeatherApp.java:159)
11-20 06:17:24.426: WARN/System.err(406): at com.dave.nzweather.WeatherApp.onCreate(WeatherApp.java:100)
11-20 06:17:24.426: WARN/System.err(406): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
11-20 06:17:24.438: WARN/System.err(406): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
11-20 06:17:24.438: WARN/System.err(406): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
11-20 06:17:24.446: WARN/System.err(406): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
11-20 06:17:24.446: WARN/System.err(406): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
11-20 06:17:24.456: WARN/System.err(406): at android.os.Handler.dispatchMessage(Handler.java:99)
11-20 06:17:24.456: WARN/System.err(406): at android.os.Looper.loop(Looper.java:123)
11-20 06:17:24.456: WARN/System.err(406): at android.app.ActivityThread.main(ActivityThread.java:4627)
11-20 06:17:24.466: WARN/System.err(406): at java.lang.reflect.Method.invokeNative(Native Method)
11-20 06:17:24.466: WARN/System.err(406): at java.lang.reflect.Method.invoke(Method.java:521)
11-20 06:17:24.466: WARN/System.err(406): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-20 06:17:24.476: WARN/System.err(406): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-20 06:17:24.476: WARN/System.err(406): at dalvik.system.NativeStart.main(Native Method)
11-20 06:17:24.486: WARN/ROGER(406): org.xml.sax.SAXParseException: Unexpected end of document
In the interest of brevity, I've not included the original xml, but it's just the standard weather xml from googles feed. I've also tried a few completely different xml files, (including the sample from http://www.ibm.com/developerworks/xml/library/x-android/) and they all give the same error. (They also all validate as well formed when I run them through an online xml validator). This makes me think that it's not a problem with the xml, but rather with how I'm trying to feed it into the parser.
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Nov 30, 2009
I'm registering a sensor listener with this line of code.
mSensorManager.registerListener(this,mSensorManager.getDefaultSensor (Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_FASTEST);
The rate is set to SENSOR_DELAY_FASTEST with the expectation that I would receive events roughly every 20-30ms. It turns out that I receive events only every 200-220ms (just now, my event code simply logcats the system time).
No matter which rate I use, SENSOR_DELAY_NORMAL, SENSOR_DELAY_UI, SENSOR_DELAY_GAME, or SENSOR_DELAY_FASTEST, I get the same result?
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Feb 12, 2010
Got a Samsung Moment a couple of weeks ago. Last night starting using Astrid (Task/ToDo app), which came pre-installed on my phone. When I launched Astrid for the first time, I got a warning message -- something about making sure Sprint Update or Sprint Updater doesn't kill Astrid, or ruin it, or something. Clearly, I didn't understand the message. But I clicked "Okay" anyway, and started using Astrid. But I'm worried that a Sprint Update could erase all my Astrid data -- my To Do's. I'm reluctant to create many Astrid tasks until I know how to prevent them from being unexpectedly erased. My questions: Can anyone explain the situation to me? (e.g., I have no idea who/when/how/where/what Sprint updates). Can anyone explain what I need to do to prevent the catastrophe about which Astrid was warning me?
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Feb 9, 2010
I am pretty new to Android, the thing that bugs me the most about the IDE is that I am not able to get any information about an unexpected exception when it gets thrown, I can put a try catch block around identified code that generates it, but in many cases it takes time to find the line of code that generates the exception. is there any other way I can get the exception information? in JDT when an unexpected exception is thrown the call stack displays the exception class name. but in ADT this doesn't work.
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Jun 19, 2010
The screen shot below is of a simplified version of the application from the Tab Layout tutorial. You can see a black horizontal line below the tabs. Why is it there and how can I remove it?
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Mar 31, 2010
I have here a function that downloads data from a remote server to file. I am still not confident with my code. My question is, what if while reading the stream and saving the data to a file and suddenly I was disconnected in the internet, will these catch exceptions below can really catch that kind of incident? If not, can you suggest how to handle this kind of incident?
I call this function in a thread so that the UI won't be blocked.
CODE:...................
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Oct 11, 2010
I wish to work with checked list views wherein only one item can be selected at a time. Some queries related to this:
1) Is it advised to work with CheckedTextView as the ListView items, or a combination of CheckBox and TextView?
2) If using CheckedTextView, the text comes first and the checkbox appears on right edge. Is it possible to make the checkbox come on the left of the TextView?
3) How can I make one of the items as checked in onCreate()?
I am using array adapter and calling setAdapter() to populate list.
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Apr 29, 2010
I'm currently working on a small update to a project and I'm having an issue with Relative_Layout and fill_parent in a list view. I'm trying to insert a divider between two sections in each row, much like the divider in the call log of the default dialer. I checked out the Android source code to see how they did it, but I encountered a problem when replicating their solution.
To start, here is my row item layout:
CODE:..........
The issue I'm facing is that each row has a thumbnail of varying height (ImageView01). If I set the RelativeLayout's layout_height property to fill_parent, the divider does not scale vertically to fill the row (it just remains a 1px dot). If I set layout_height to "?android:attr/listPreferredItemHeight", the divider fills the row, but the thumbnails shrink. I've done some debugging in the getView() method of the adapter, and it seems that the divider's height is not being set properly once the row has it's proper height.
Here is a portion of the getView() method:
CODE:.........
The rest of the method simply sets the appropriate text and images for the row.
Also, I create the inflater object in the adapter's constructor with: inflater = LayoutInflater.from(context);
Am I missing something essential? Or does fill_parent just not work with dynamic heights?
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Jun 23, 2010
I have faced with issue about startActivityForResult() and onActivityResult(). If child activity started by the startActivityForResult() exit by unexpected exception the onActivityResult() is not called and I have no any ideas how can I handle this to get application working in a fail-safe manner ?
When my code runs child activity with startActivityForResult() it awaits until onActivityResult() will be invoked to get working further, but onActivityResult() is not calling and my code is "hang- up" (logically).
So the question is how can I handle all possible ways the child activity is finished (normally and by unexpected exception) to get fail-safe code ?
I have check the documentation for this issue but have found nothing relating issue.
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May 6, 2010
Given a listview that shows checkboxes next to a list of people, I want to be able to get the names (in Strings for example) of the people who are checked. I have set my listview mode to allow for multiple checks.
getCheckedItemPositions()
Will get the positions but I can't figure out how to iterate over the listview to get the names. Also Eclipse tells me that getCheckItemIds is not a valid method for ListView.
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Aug 14, 2010
I have a ListView that just contains a CheckedTextView. I have a very simple CursorAdapter that populates CheckedTextViews. When I click on an item, I can see that I am responding to the correct row, store the value in my model and the CheckedText gets checked. However, when I scroll down and then back up again, while I see that the model contains the correct value (in #bindView), calling #setChecked on the CheckedTextView has no effect. Ie All items are unchecked. Code...
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Oct 11, 2010
I am using a ListView in which only one item can be checked at a time.
This is my custom list_row.xml :
CODE:..........
I populate the list in onCreate() using a normal array adapter :
CODE:............
When the list is displayed, I want to have, say the 5th item, in the list as Checked. How can I go about doing this? I know CheckedTextView has a function called setChecked(), but how can I get my 5th item from the list to apply this function on it?
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Nov 19, 2010
I've been implementing a logcat reader in java which uses the binary output of logcat (-B switch) rather than the text based formats. My code works for many of the entries, but frequently the binary log entries have an extra byte inserted which I can't account for, making the payload the wrong size.
From looking at various bits of the c++ code for both the logcat program itself and the logging apis, the binary format seems to be:
CODE:...........
Payload section of the header is (payloadlength bytes total):
CODE:...............
This file defines the struct: http://www.google.com/codesearch/p?hl=en#2wSbThBwwIw/include/cutils/l...
The extra byte I'm seeing occours after the nanosecond timestamp and before the log priority of the payload. e.g. Here is a hex dump of one of the log entries with the phantom byte:
The byte (in this instance) is 0x1D at offset 0x14 0000:
CODE:.......
The extra byte shifts the payload by 1, so the payload length becomes incorrect. I can't see where this byte is coming from.
I also tried the LogReceiver class in ddmlib, but that also fails to handle extra byte and produces garbage after it hits an entry with the extra byte: [url]
Here is a quick python script which demonstrates the problem. It reads and prints binary log entries in the expected format. It will raise an exception when it encounters an entry with an unexpected byte: [url]
The logcat program itself successfully reinterprets the binary format without jumping through any hoops, so I can only guess it's some kind of struct alignment artifact. Anyone encountered this or got any idea why the extra byte is appearing?
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May 10, 2009
I am attempting to integrate some previous libraries that we have within my new android project.
I have made several attempts including:
Importing the code as sub-projects (that are built using the android.jar)
Importing the code as jar files (from the built code)
Adding the files directly as part of my project
Reordering the dependencies
However for each one of these scenarios I keep getting the following exception thrown by the davlik compiler.
It is always picking the first class in the package (ie if I remove that class, it picks the next and so on).
It would appear to me that this is a compiler bug - somehow it's getting it's dependencies in a twist.
Anyone else experienced this? And/or have any ideas on how to get around this one?
UNEXPECTED TOP-LEVEL EXCEPTION:
CODE:................................
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Sep 9, 2010
Basically it is deleting my oldest text from the particular person when I receive a new text from said person. Seems 10 texts is the threshold.I didn't make any changes and this started occurring.
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Oct 7, 2010
I have a RadioGroup view inside a LinearLayout. The radio buttons are added from dataList. If I call the code below from inside onCreate, the correct button is checked. However the dataList can get updated from time to time and after that happens I call this code again, without destroying the Activity. After that, the view is redrawn but no button is checked. I suspect the RadioGroup checked-button bookkeeping is getting confused by the removeAllViews call. Any ideas what might be going wrong?
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Feb 14, 2010
Ive got ListActivity and i am using custom CursorAdapter. in each item of the list ive got also checkbox. now i have in my list screen a perm button, when you press on it, it should find all the checkboxes which are 'checked' and do some operations on the item which it's checkbox is 'checked'. how can i retrive all the checked ones? ive done focusable:false, so i can use OnClickListener, but i dont know how farther then
this..
some code:.............
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