Android :: Use 'SQLiteStatement' To Insert A Item ( With Multiple Columns)?
Sep 6, 2010
I am new in Android development, I got a simple question to ask, I know the way how to implement item insert to DB table when there is only one id column and one "name" column in the table, which is code...
But how about there are multiple columns (more than 2 columns) in the table, how to implement the insert function?? For example I have a TABLE (myTable) has the following columns:
"CREATE TABLE myTable (id INTEGER PRIMARY KEY, date TEXT, time TEXT, cost DOUBLE)"
Now, I want to use SQLiteStatement to insert a item to this table, how to do that?
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Oct 27, 2009
I've run into an issue with an autocomplete field I'm working on.The field I'm working with is composed of the form "<NAME> (<CODE>)".When a user starts typing in text, I want to display any results that match either NAME or CODE.For example, if this list contains items and their codes, like "Personal Computer (PC)", then I'd want the list to pop up that row if the user types "P", "PC", "Per", etc.However, the problem I'm running into now is how to best sort the results that come back from this.For example, If someone enters "PC", I want "Personal Computer (PC)" to be the first result. However, if there's another row (you'll have to bear with me as this is contrived) "PC Case (301)", then there's no simple ordering I can do on the results to ensure that the best match appears first. Ordering by name and code both returns PC Case first.I want a query where it returns the best match first, rather than items in alphabetical order.Is there such a function I can use in SQLite to get this, or should I return the results and then mess with the order in the code?
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Aug 5, 2010
I have a ListView on my ListActivity and I'd like the rows of the ListView to be 1 of 3 different layouts. The first item in my list is always going to use layout A, the second item in my list is always going to use layout B, and all subsequent items are going to use layout C.
Here is my getView function: Code...
R.id.label1 and R.id.label2 are TextViews on R.layout.layout_A. However, txtLabel1 and txtLabel2 are null after trying to set them. Why?
I stepped through this code in the debugger and it inflated the correct layout (R.layout.layout_A) and fell into the correct case below to set the R.id.label1 and R.id.label2 text. Also, if there is a better way to do this, please let me know.
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Sep 1, 2009
How to select multiple item in ListView in android.?
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Mar 8, 2010
My list view is a multiple selection list view. i have to show the selected list view items in one color(say green) and the other items in some other color(red). How to achieve this?
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Sep 1, 2010
I am developing one Map based application and in this application i want to draw Multiple Overlay Item(With Marker) on map.so anyone can told me the efficient way of doing it.
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Jan 21, 2009
I am having trouble setting one menu item/button to run different actions based on other actions currently running(ie having the button toggle actions). what I am trying to do is have a menu item to toggle wifi on and off but when I try to run if/else statements on the menuitem click it force closes the app.
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Sep 20, 2010
I'm wondering whether prepared statements in Android (instances of SQLiteStatement) are thread-safe. In particular I'm asking with regard to the following scenario:
In a ContentProvider you create a pre-compiled insert statement during onCreate. Then, in the overriden insert method you make use of this statement by binding a set of parameters to it and calling executeInsert on it.
We know that a ContentProvider has to be written in a thread-safe manner. If SQLiteStatement does not bind parameters per thread, a concurrent call to the provider's insert method would alter the statement's bindings and result in unpredictable behavior.
Android's own Contacts provider uses prepared statements in this way (http://bit.ly/bDuKAT), so I tend to believe that they are in fact thread-safe. Looking at the source code of SQLiteStatement I don't see how though (http://bit.ly/9M1Swv).
So, is SQLiteStatement (or SQLiteProgram that is) thread-safe with respect to parameter binding or not?
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Jan 12, 2010
I have the following code to intantiate a SimpleCursorAdapter to use with a ListView. As you can see I have passed the R.layout.log_item to display the list items, and one value/control to bind to (TripDate).
SimpleCursorAdapter sca = new SimpleCursorAdapter(this, R.layout.log_item,c,new String[] {DBAdapter.KEY_LOG_TRIPDATE},new int[]{R.id.txtTripDate});
This works. I currently only have one widget in the layout xml, a TextView to hold the TripDate.
How do I pass multiple binding parameters for the additional widgets in the layout? So I can also display other info.
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Apr 23, 2010
I'm trying to create a multiple selection list where the selection is represented graphically rather than with checkboxes.My list has checkboxes, but I want them to serve a different purpose. I'm using a cursor to hold my data and created a custom view binder for the SimpleCursorAdapter. I did this for the checkboxes and general flexibility.So far I haven't even been able to show one line as being selected. I've enabled multiple selection on the list and denied the children of the list item focusability. I've tried manually changing background color with the position fed in through the list item click listener. But the wrong items get changed and they don't even change to the right color. I've enabled touch focusability with no improvement either.Ideally, I'd like the trackball highlight focus bar to appear in multiple places. But I don't think this is possible unless you use the drawable directly. But I don't know how to find or apply it. My next idea was to have a slim view bar that changes color. But I had the same problem with the wrong item being selected so I never finished trying to guess the index position to see if this would work. My most recent idea is to completely swap out the view for another one if it's selected. But I have no idea how to do this either. I'm thinking of using an array list to store the _id s of the items that need a different view to get around the wierd selection problem. I'm also thinking of passing in the ID field as my from and the selection view as the to for my adapter. Then I'd intercept it with my binder and change the view accordingly. But once again, I'm not sure how to do this successfuly.
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Apr 9, 2010
I don't know exactly how to explain this problem, but I'll try. I have a ListView with several items. Each item has inside a TextView and two ImageView. I want the ImageView change when I click on them, and I want to open a context menu when I press for a long time into the ListView item.For the ImageView, everything works properly. For the whole item, I can show the context menu after a long press, but my problem is that the ImageView changes as well when I am pressing the TextView, for example.I hope you understand my problem. I think that all the children of a view are affected by an event in the parent, but I am not sure.
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Nov 20, 2010
I jave a list of item (linearlayout inside a scrollview where i add buttons vertically to linearlayout dynamically from the java code)i need when i click on one button the item moves up (scroll up) , to make the item at the first of the screen
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May 25, 2010
I need to get an item's position in spinner knowing it's ID. I've tried to do it with Spinner and SpinnerAdapter classes but there are no corresponding methods there.
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Aug 26, 2010
How can I get all the column names used in a database table in Android..?
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Dec 31, 2009
On an Android layout, I'd like to have a set of rows, each with two TextViews. The leftmost column of TextViews should be right-aligned, just left of an imaginary centerline down the screen. The rightmost column should be left-aligned.
Examples of this can be seen at http://stuff.greenberg.org/ScopeCalc.htm
What's the best layout to use?
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Feb 15, 2010
I have set a content provider, for some reason I am able to to delete a row this way:
getContentResolver().delete(myUri, "_id=" + "3", null);
but i am not able to delete a row that way:
getContentResolver().delete(myUri, "NAME=" + "chris", null);
getting this error:
02-15 15:48:08.197: ERROR/AndroidRuntime(3043): android.database.sqlite.SQLiteException: no such column: chris: , while compiling: DELETE FROM User WHERE NAME=chris
I have checked my database file, and it is there.. but for some reason i can delete columns from my database only by the _id column, how can i fix this?
error:
02-15 15:48:08.197: ERROR/AndroidRuntime(3043): android.database.sqlite.SQLiteException: no such column: idanmoshik1: , while compiling: DELETE FROM User WHERE USER_NAME=idanmoshik1.
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Aug 31, 2010
How can I make columns in Android ListView? I have this list item layout xml:
CODE:.....
The problem is when the f.ex. wind_direction change from "4" to "300", then the columns are not aligned.
Who can this be made with fixed width of columns and using the whole width independent of devices?
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Sep 24, 2010
I am having problems creating a table layout with 4 columns, that span horizontally.
I want my Row to look like this: AAPL | 200.00 | Image Divider | 1.53 (+1.5%)
I want the 200.00 to be right aligned, as well as the 1.53(+1.5%).
CODE:................
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Feb 25, 2010
I've got a question about updating an app after release. If I have a database that contains 10 columns and I add a feature that requires an 11th column after the app has been released, where would I put the sql code to add the new column so that when they install the app it keeps their current data, but adds that 11th column? Is that even possible or would I need to create another table that references the first with a foreign key?
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May 15, 2010
I create a set of RadioButtons in a RadioGroup on the fly (no XML), and would like to arrange them in either two columns or two rows - right now they are in a single column. I could of course create two sets of RadioButtons, and place each in a different RadioGroup view, but presumably then I would have to control the active state of each button by taking into account both views. Does anyone have an idea how to better do this?
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May 15, 2010
I have two SQLite tables, that I would love to join them on a name column. This column contains accented characters, so I am wondering how can I compare them for join. I would like the accents dropped for the comparison to work.
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Jan 13, 2010
I am trying to get the emails from a contact on Android (2.0.1). I canīt get the email. The code...
When I try to get the values of the columns, I get null. How can I obtain the emails? Maybe the CONTENT_URI is not correct or the data is stored in another table and I have to make a join.
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Sep 20, 2010
I need create a gridview with 50 columns for my application.Then i did this gridview created with 5000 px width and in the horizontal view.its now working .But the problem is its loads about 5 row of data first time about(250) images in gridview.when scroling it reuse the above rows. but actually i need to load only the images in screen.but it not working.
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Mar 22, 2010
I am wondering if Android's ContentResolver supports using SQL functions over the columns when you query a ContentProvider. Such as SQLite3 date functions, to get a specific date format, or datediff?
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Nov 3, 2009
I am displaying a table of values in my android application, and would like the columns to be distributed evenly in terms of size , instead of sizing according to content. Been playing around with stretchColumns but couldn't manage to figure out the right combination.
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Mar 4, 2010
I am after a code to get the available column names of a table in Android?
I looked around and didn't find anything.
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Oct 5, 2010
I need populate three columns in Android activity with dynamic data. How can I do it?
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Apr 28, 2010
I have an XML layout which contains a TableLayout with an unknown number of TableRows...
The number of Rows will be established durin runtime, what I do know though is that I want two columns...
So I have a couple of questions regarding this :
- is there a way to set the whole TableLayout to have 2 columns ?
- is there a way programmatically to give an id to the (during runtime) created TableRows which will be placed within the TableLayout, so I can reference them later on from other parts of the software ?
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Aug 28, 2010
I have a dynamic tablelayout that I build programmatically. Every so often one of the rows has a child SeekBar.
How I can programmatically make these SeekBars span across all the table columns?
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Oct 6, 2010
I am trying to see if someone can help me with a simple list view I am tying to make. I am specifically facing problem trying to introduce a new column in this list view. Label 3 in xml code below is the new column I m trying to make. Should I have a new linear layout and wrap two text views in it or is there some other option? code...
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