Android :: When Should I Call A Close Method Of A SQLite Database In Droid
Jun 14, 2010
I want to know when a close method of a sqlite database should be called in a life cycle, since the NotePad sample in the sdk (http://developer.android.com/resources/tutorials/notepad/index.html) doesn't call NotesDbAdapter.close(), it implements that method though.
My application accesses the db not so frequently, but some, it depends on user requests. I think I should open the db at the onCreate, and close it at the onDestroy. Is that a good practice?
View 1 Replies
Jul 22, 2010
Is it really necessary to close an SQLite database that your activity has opened (database is in local memory or on SD card)? I would think it would be good practice, but I noticed that the Android samples such as the Notepad tutorial and SearchableDictionary sample do not do this. I've also seen sample code where the database is consistently opened, read from, and closed, but that would seem to add unnecessary overhead.
View 5 Replies
View Related
Jun 23, 2010
In my app, I'm supporting the backup and restoration of the Sqlite db file. I need to close and re-open my database connection after the restore. How can I do this?
View 2 Replies
View Related
Jul 6, 2010
The log is as following:
CODE:..................
View 2 Replies
View Related
Jan 31, 2010
How can i call the onUpgrade Method of the database? Background of my question: I do a backup on the sdcard of the full database. And the user can restore this database. But if in the meantime (between backup and restore) an app update has made changes to the database i get a problem on restoring. The new columns are not there after restoring. So i want to call the onUpgrade method to add all new/changed columns. Or is there a better way for this?
View 1 Replies
View Related
Jun 6, 2010
Basically I'm calling the onDraw method like so...
code:...................
You see I'm drawing it on top of a Camera view and the information being drawn is subject to change. I have a listener setup which will update the variables being drawn at the appropriate time but I now want to "refresh" this draw in that listener.
View 1 Replies
View Related
Dec 23, 2009
So far we have developed apps in android that create database on runtime. We like to know how can we access a pre-built or existing database/sqlite file in our android app?
View 1 Replies
View Related
Aug 6, 2010
I try to increase the value of an integer key in a row in my table. However, nothing really seems to happen.
db.rawQuery("UPDATE table SET key = key + 1 WHERE name=?", new String[] {name});
However, this code works fine (just sets the key to a hard-coded value):
ContentValues values = new ContentValues();
values.put("key", 2);
db.update("table", values, "name=?", new String[] {name});
Also tried '?' instead of just ?, but it resulted just in a run-time error.
View 1 Replies
View Related
Sep 15, 2010
I have array list of geopoints
List<GeoPoint> geoPointsArray = new ArrayList<GeoPoint>();
I want to put geoPointsArray array in to SQLite database and then fetch the data back as an array.
Now I use ContentValues for insert into array as:
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_TIME, time);
db.insert(tableName, null, initialValues);
View 2 Replies
View Related
Mar 25, 2010
I am trying to populate a ListView in a separate class with data taken from a SQLite database held in another class. What would be the easiest way to do so?
View 1 Replies
View Related
Jul 28, 2010
I have a xml file with info inside. I want to convert the xml file to sqlite database without using a SD card in android platform(Java Language). Does anyone have any idea how to do it?
View 1 Replies
View Related
Nov 3, 2010
How can I obtain the value of a boolean field in a sqlite database in android?
I usually use getString() getInt() etc to get the values of my fields, but there does not seem to be a getBoolean() method. Any takers?
View 2 Replies
View Related
Sep 14, 2010
How large can be the database of my Android app? Is there a limit?
For performance reasons, I don't want to store the database on the SD card.
View 1 Replies
View Related
Aug 13, 2010
I'm trying to insert values on Android SQLite Database. The question is, Iḿ trying to insert a word, the table has 3 columns, ID, WORD, COUNT. When I insert a word in the database, some method will verify if this word exists on the database. If yes, it will increment the value of COUNT for this word.
View 1 Replies
View Related
Aug 13, 2010
I am trying to find the path for the android database files on Ubuntu 10.4, because I want to access with SQLite Browser. Someone can tell?
View 2 Replies
View Related
Dec 16, 2009
I want to know how to store the images in SQLite database in android.and also how to retrieve it. anyone give the samplecode or any URL give me to develop my application.
View 3 Replies
View Related
Aug 23, 2010
I'm trying to deploy an application with an existing SQLite database.I've been reading though the examples that are posted but they are always missing some part of the class. I feel like I'm trying to bake muffins but no one told me to use baking powder.Can someone post a full database helper class for depoying an SQLite database on Android? Edit : Delete old code because it doesn't work.
View 2 Replies
View Related
Apr 12, 2010
I'm currently developing a Field-Service application that stores data in the local sqlite database on an android device. At some point, usually after completing the data collection rounds, the local sqlite db is to be synchronized to a remote sybase db on the server.Any suggestions as to how this could be achieved or engineered as a solution? Or even better, are there alternatives to synchronizing data in such an application?
View 1 Replies
View Related
Feb 13, 2009
I'm new to Android, I just finished the Notepad Tutorials, where we can create SQLite Databases to save notes. So I wanted to know if it was possible to "import" my own SQLite database (not created with my App but with a 3rd-party software) to my project, and if the answer is yes, where should I save my SQLite databse and how can I have access to it.
View 9 Replies
View Related
Mar 25, 2010
I'm doing a application that will use a database with serialized object. The objects will be already serialized and the user will just display things. On a PC I would just make an XML but with android I'm not sure. Can I make an XML and "unpack" it when the user launch the application for the first time or should I do something else?
View 3 Replies
View Related
Mar 5, 2010
I put my database field in "assets" folder. And use the code from this blog to copy the database to "/data/data/my_packname/databases/", (This copy code i run it in the onCreate() method when i run this app) then use select * from ... to get data. But it gives me the exception: no such table. Someone told me that if i am attempting to copy the file in SQLiteOpenHelper's onCreate(), it's too late. So the copy file code can not copy the complete file. So i need to use adb or ddms to pull the database first? So, Anyone can teach me how to use my own databse?
View 3 Replies
View Related
Nov 18, 2009
I have a class like class My data{ String name; int data; Location[] locality.
View 8 Replies
View Related
May 23, 2009
I am new to android and I have a problem in creating a database.
public class database extends ListActivity {
/** Called when the activity is first created. */
private final String MY_DATABASE_NAME = "myCoolUserDB.db";
private final String MY_DATABASE_TABLE = "t_Users";
Context c;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ArrayList<String> results = new ArrayList<String>();
setContentView(R.layout.main);
SQLiteDatabase mydb=null;
try
{
mydb.openOrCreateDatabase(MY_DATABASE_NAME, null);
} catch(Exception e){}
}}
When I run this code it throws a run time exception.
View 4 Replies
View Related
Mar 23, 2010
How do I delete the sqlite database exists in my android? There is a db behind my android qro and delete the same
View 4 Replies
View Related
Aug 2, 2010
public void delete(String id, String name, String phonenumber, String time, String message)
{
String[] args={id};
getWritableDatabase().delete("texts", "_ID=?", args);
}
It works fine, and deletes the specified row. However, I also want to implement it so that I can delete the most recent (earliest date) entry in the database, which should be at the top of the table. I know I can do this by altering the last 2 parameters of delete, but I cannot figure out what to change them to.
View 1 Replies
View Related
Jan 25, 2010
Is possible update the records from SQLite from my Android Application1 from other Application2 Android
View 4 Replies
View Related
Jul 31, 2009
Is there any UI can connect to SQLite database? I hope that I can read the data without writing code.is there any method can make it happened?
View 6 Replies
View Related
Jun 2, 2010
I successfully created the Database and inserted a row however I cannot Query it for some reason. My Droid crashes everytime.
CODE:...........
I get this exception
No such column: value: , while compiling: SELECT DISTINCT value FROM mainTable
View 2 Replies
View Related
Jun 4, 2010
I'm looking for a very simple ORM framework working on Android for sqlite. I've been testing activeAndroid but none of the example could ever build on Eclipse. By the way, how do guys implements a "many to many" relationship in sqlite for android ? How do you reflect the cascade regarding deletion of rows and guarantee the database integrity?
View 2 Replies
View Related
Jul 14, 2009
How to drop a database in Android SDK?
Did not see any methods in android.database.sqlite.SQLiteOpenHelper or android.database.sqlite.SQLiteDatabase classes.
View 10 Replies
View Related
