Android :: SQLite Matching Prefix On Indexed Column

Oct 7, 2009

I have a TEXT column and I want to match all rows where the value has a certain prefix. For example, WHERE mycol LIKE 'myprefix%' However, I noticed in some optimization guidelines that this will not use the index and instead you should do this:WHERE mycol >= 'myprefix' AND mycol < 'myprefiy'Instead of simple A-Z chars, I have a whole variety of UTF-8 chars (think chinese characters).My question is, how to work out the next char in UTF-8? Is it enough to add one to the codepoint,

Android :: SQLite matching prefix on indexed column


Android :: Create A Indexed Column In Sqlite

May 4, 2010

Can I create index on a column in the create table command in sqlite?I tried this command below in sqlite3 in Android shell. It seems to work.But, in sqlite's query language specification, specifying a column to be indexed is not supported.

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Android :: Sqlite - No Such Column Name SQLITEexception

Jun 21, 2009

I am trying to utilize what has allready been written for this, in my own database

I will actually post my code so someone may be able to pick out what is wrong

This is the error i get: 06-21 19:57:35.511: ERROR/AndroidRuntime(796): Caused by:

code:................

This is the method its faulting on in Class:

code:..............................

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Android :: Rename Column Sqlite Database?

Oct 12, 2009

I have a database that I download external and save on my sdcard. But this database is also used for an iPhone app and has a column id and not _id (sqlite uses _id). How can i rename this column to _id?

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Android :: Detect If A Table Contains A Column In Droid / Sqlite

Apr 20, 2010

So I have an app on the market, and with an update I want to add some columns to the database. No problems so far. But I want to detect if the database in use is missing these columns, and add them if this is the case. I need this to be done dynamically and not just after the update to the new version, because the application is supposed to still be able to import older databases. Normally I would be able to use the PRAGMA query, but Im not sure how to do this with Android. I cant use execSQL since it is a query, and I cant figure out how to use PRAGMA with the query()-function.

Ofcourse I could just catch exceptions and then add the column, or always add the columns to each table before I start to work with it, but that is not a neat solution.

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Android :: Reference Sqlite Db Column To Use In Update Statement

May 8, 2010

I am trying to update a datetime column in an android sqlite db to use international date format (yyyy-mm-dd) instead of the current format (mm/dd/yyyy). I want to use the sqlite date() function to reformat the current value of the column. I thought it would be as simple as the following: update tblename set thedate = date(thedate)

But the above does not work.

How would i write the sql statement to accomplish this?

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Android :: Determining Data Type Of Column In SQLite

Jun 23, 2010

I'm working on an Android App where the user has different options for sorting the displayed data that comes from the database. Currently my orderBy string that I pass to Androids query() method looks like this:

"LOWER("+columnName+") ASC"

The problem with this is that if the data type in the column specified by columnName is integer, calling LOWER() on it will cause it to be sorted alphabetically, i.e. based only on the leftmost digit, which of course doesn't make any sense for numeric data. Hence I only want to apply LOWER() if the data type of the column is not integer. What I have in mind is a statement like this:

"CASE WHEN [data type of columnName is integer] THEN "+columnName+" ASC ELSE LOWER("+columName+") ASC END"

The part in the brackets is what I don't know how to do. Does SQLite provide a function to determine a column's data type?

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Android :: Retrieve Single Column Of Last Row In Sqlite / Droid Using ORDER ID Desc Limit 1

Nov 10, 2010

I'm attempting to create a method that will allow me to retrieve a value from the last row of a database, and then insert it into an EditText field. (This is a value that the user will not change all that often, so it would be helpful if when they do set it, it stays set when they come back to it).

My method, based on a similar method I have for getting the total of a specific column, is as such. code...

If I run the program without this statement, it works fine and the value saves to the db. As soon as I try to run it with this, I get a force close. Any suggestions?

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Display BarGraph With Sqlite Database Column Data

May 8, 2013

I am developing an application in android allowing the user to maintain his weight by providing him diet suggestions. I have done with that part and now, I need to display user weight tracking details using bar graph. I am able to fetch the Weight and Login date column data from the sqlite database to List<String>. I don't understand the way to put these values into a Bar Graph with Date Column data as X-axis and Weight column data as Y-axis.

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Android :: Querying SQLite DB In Android Activity - Saying No Column Found - Although It Exists

Aug 10, 2010

See title for explanation.

Here is the method I'm using:

CODE:.........

And here is the call to the method:

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

Why it would be throwing the "No Column Found with name=Test", although my DB explorer shows there is indeed a column named name and a value in a row named Test?

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Android :: Sqlite Exception:java.lang.Illegal Argument Exception Column Id Does Not Exist

Jul 14, 2010

I created a sql lite database with the following columns:
static final String dbName="demoDB";
static final String tableName="Employees";
static final String colID="EmployeeID";
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE "+tableName+" ("+colID+" INTEGER PRIMARY KEY AUTOINCREMENT, "+
colName+" TEXT, "+colAge+" Integer);");
I want to select all the records in the database like this and display them in a gridview:SQLiteDatabase db=this.getWritableDatabase();Cursor cur= db.rawQuery("Select "+colName+", "+colAge+" from "+tableName, new String [] {});String [] from=new String []{DatabaseHelper.colName,DatabaseHelper.colAge};
int [] to=new int [] {R.id.colName,R.id.colAge};
SimpleCursorAdapter sca=new SimpleCursorAdapter(this,R.layout.gridrow,c,from,to);
GridView grid=(GridView)findViewById(R.id.grid);
grid.setAdapter(sca);but i receive the following exception:java.lang.IllegalArgumentException: column '_id' does not exist.the db table does not have a column with name '_id'so what is wrong with this code

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Android :: Select Max - Column - Returning Only Column Name

Jul 16, 2010

This has got me all confused! I'm trying to return the max value from a column in my database but the return value is always the name of the column.

The query I use:

private static final String SELECTMAX = "SELECT MAX(?) FROM " + TABLE_NAME ;

The (test) function to return the max value:

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

The column i'm querying is an INTEGER type but the result 's' is always the column name and not the desired value.

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Android :: How Long Does It Take For Application To Get Indexed To Marketplace?

Dec 31, 2009

I wrote two apps and submitted them to the marketplace last night (been roughly 12 hours now). One was a LITE version of my app and the next was a Standard version. Neither shows up in a search on the Marketplace even though the LITE version of my app has been installed 25 times already.Is there a lengthy approval process that goes on before an app is approved?

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Android :: What Does Prefix M Stand For ?

Feb 22, 2010

I saw many sample codes that each variable contains the 'm' prefix. I don't know what this m means. I have two-year experience in MFC. Each variable has 'm' prefix to tell you that I'm the one variable of MFC component. (m stands for MFC). can anybody answer me this question?

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Android :: Change Namespace Prefix ?

Jul 21, 2010

If you find that the "android:" attribute prefix is cumbersome and reduces the readability of your Android XML files, you might want to try changing the prefix from android to _. If you do it via the Eclipse XML editor, it seems like you have to perform 2 find/replace operations with regular expressions. This is itself a cumbersome task, so you can automate it:

1) Download AutoHotKey, which lets you write a script to send keys and mouse clicks to a program. I believe that AutoKey does the same for linux.

2) Write a script to tell Eclipse to perform a find/replace, scope is all, wrap search, regular expressions on, 1st find expression is (xmlns:)android, 1st replace expression is 1_. 2nd find expression is (s)android: and 2nd replace expression is 1_:. I also added in format and save commands, so my AutoHotKey script is:

CODE:.......

The result is a single-keystroke (Ctrl-Shift-a) to change a layout file from:

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

to

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

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Android :: Error Parsing XML / Unbound Prefix

Nov 15, 2010

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#8B4789">

<TextView
android:layout_y="20dip"
android:layout_x="20dip"
androd:gravity="fill"
android:textColor="#FFFFFF"
android:background="#4F2F4F"
android:layout_height="335dip"
android:layout_width="270dip"
/>
</AbsoluteLayout>

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Android :: Matching TextView Heights

Sep 20, 2010

I have two vertical TableLayouts containing rows of TextViews separated by some graphics. Something like this:

R-L Graphics R-R R-L R-R R-L R-R R-L R-R R-L R-R

The R-R TextViews have a fixed width, which means they grow vertically when the text is longer than will fit in the width. The text is set at runtime so this height is not known in advance. I want the height of the R-L rows to exactly match the height of the R-R rows with the R-R rows being the reference source for the height. Once I do a TextView.setText and a TextView.setWidth on the R-R TextViews, the height of those TextViews should be determined. Then I can do a TextView.setMinHeight on the R-L TextViews. But I'm having trouble getting the height value from the R-R TextViews. The TextView.getHeight method returns zero.

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Android :: No Matching Content In Market

Aug 21, 2010

Anyone else seen this on the featured apps page? Games and Apps tabs working ok though. I guess it's a market error.

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Android :: Matching SDK Version To Code - NPE Bug In WebView?

Mar 15, 2009

I wrote an app that, among other things, renders feed articles using WebView. Now I get error reports that seem to originate in WebView:

-- NewsRob Version: 1.7.0/170 -- Android Version: sdk=2, release=1.1, inc=128600 -- Thread State: RUNNABLE -- Stacktrace: java.lang.NullPointerException at android.webkit.CacheManager$1.run(CacheManager.java:391) at java.lang.Thread.run(Thread.java:935)

I've got another report with the same content, but a different incremental version of the sdk (126986). Probably one from the US and one from the UK. So now I would love to know why the code blows up and if there is anything I can do about it. And with the source files and line numbers I felt in good shape to so. If only I could match them to the public code repositories ;-(............................

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Android :: Contacts Activity - Signature Does Not Matching

Sep 29, 2009

I have written an Instrumentation class for testing some application. I want to run some automation actions on Contacts activity (system application). But I have "signature does not matching" problem when start instrumentation. How can I run this instrumentation on system application?

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Android :: Matching Prebuilt Kernel Sources

Jul 10, 2009

I have a recent "repo" copy of the platform tree and I noticed that the kernel sources included in it are incomplete. For example, the arch/arm/mach-goldfish directory is not present, but devices from this directory are present in the kernel that the emulator boots. How can I get a more complete copy of the linux kernel sources? Are there tags for lining up these sources with the prebuilt kernel that is shipped in the platform tree?

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General :: Phone Number Matching In Android?

Nov 17, 2012

I've been trying to organize the phone numbers in my address book so that:The phone calls I receive show the contact name (and not only the number).

The SMS messages I receive show the contact name (and not only the number).Android is able to join the WhatsApp contact with the main contact based on the phone number.

I live in Brazil and the phone numbers have a few particularities: you can include the country code or not (55), you can include the city code or not (which is usually prepended with a 0), you can include the phone carrier code or not, etc. So matching those numbers is not a trivial problem.

I have the impression that Android has an internal logic for dealing with this issue. But it's not working particularly well for me. If this logic is configurable?The issues I'm having right now are:The numbers shown in the SMS messages don't have a consistent pattern:

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HTC Desire :: Android Not Recognizing Phone Numbers (Prefix Format)

Apr 8, 2010

I got my HTC Desire today, and despite spending many hours carefully updating my Google contacts, I've found that received calls and SMS messages are not displayed with the contact they're from. I believe this is because the details in my contacts list are in the format "01234 567789", whereas the incoming calls/messages are in the format "+441234 567789", and it's not realizing that the "+44" and "0" are interchangable. How can I resolve this, without going through all my contacts changing the prefix on the phone number?

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Android :: File Copied To SD Card - Contents Not Matching With Original Source

Feb 4, 2009

We have ported android to our hardware. I am facing some issues related to sdcard. Here is the test scenario and issues:

First issue :
1. On hardware, insert the card and copy a file to sdcard using dd command.
2. Remove the card from hardware.
3. Do ls /sdcard. It shows the file present in sdcard. It seems unmount of sdcard device is not happening.

Second issue:
1. Copy a file to sdcard using dd command.
2. Remove the sdcard and check the content of the sdcard from PC. File is not visible.
3. Copy file to sdcard again and then check the content of sdcard from PC. File size is zero bytes.
4. Restart the hardware and copy the file again. File is visible when checked from PC.

Third issue:
1. The content of copied file are not matching with the original source file.

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Android :: Memory Game - Can't Figure Out The Code That Matching 2 Button With The Same Image

Dec 15, 2009

I was trying to do a memory game on android, but i can't figure out the code that matching 2 button with the same image..

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

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General :: App That Adds Prefix To Dialed Number?

Apr 15, 2014

So I have tried about 10 apps so far that none seem to do what I am looking to accomplish.

I have a dial in phone system that allows me access to a dial tone. So if want to be able to select a number from my history, contacts or a clickable link and have it prompt which dialer I want to use. If I choose this app it should dial MY number and enter my access code THEN dial the number I was trying to call.

So for example I am trying to call 212-555-1212 and my number is 212-666-1212 it should dial:

212-666-1212[mynumber],,[pause]1234[accesscode],,[pause] 212-555-1212

I have found a few apps that seem to do this, however they have integrated them in such a way where it will only automatically enter into the "Calling card mode" based on dialing rules (Such as area code and country code) there is no way to manually select when to utilize the "calling card mode" and when not to,

I was thinking if there is a Alternative Dialer that supports calling cards, it will add the necessary hooks into the OS and then I can just manually select which app to use to make calls (Either the stock dialer or this new dialer)

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General :: How To Automatically Add Prefix To Dialed Numbers

Jul 2, 2012

I have an HTC Rezound, with stock OS and everything.

I work for a hospital where I frequently have to dial a 4 digit number to call different zones of the hospital. (every phone number is lets say 212-883-xxxx)

So Instead of always putting in 212-883 before the 4 digit suffix, is there a way I can tell my phone to automatically add that 6 digit prefix, without the use of an app?

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HTC Incredible :: No Matching Content In Market?

Jun 23, 2010

Just checking to see if market is working OK for you guys because when I load'er up I'm getting "No matching content in Android Market" messages at start and in various categories.

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HTC Desire :: Google Calendars - Matching Colours

Sep 8, 2010

I have a number of different calendars on Google calendars all with different colours. I have recently started a job that uses Google Calendars too and so have imported these into my account. However, when I sync them, the colours of each calendar do not match the colours on Google Calendars online. My original 3 calendars colours are all correct, but the recent ones I have added all appear red on the Desire's stock calendar app instead of the colours I have assigned.

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Sprint HTC Hero :: Dial Prefix Or Copy Paste From Text

May 13, 2010

I get phone numbers sent via text messages. I need to dial *67 to keep my number private when calling clients. On my BB I would copy and paste from the text and then add the *67 prefix. On the Hero, I can't edit the number once on the dial page. I have tried to copy/paste with the *67 sent in the text, but the Hero doesn't recognize the * as part of the number and only copies the 67 part of the prefix. What apps or workarounds do I have? We don't want to block our caller id completely, only as needed. I just have to figure this important function out.

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