I need to introduce a menu option on clicking which the whole SQLite database file stored at "data/data/com.company.packName/databases/" gets deleted. Using DROP TABLE command would only delete the table under a particular database.
How can i achieve this?
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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.
I m trying to delete a record from a SQLiteDB via Android Application,This is the way that i used the code to delete the record..
View 4 Replies View RelatedI'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 RelatedHow do I delete the sqlite database exists in my android? There is a db behind my android qro and delete the same
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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.
I have created a list view that displays the names and dates of items stored in a SQLite database, now I want to use a Context Menu to modify these items stored in the database such as edit the name, delete, and view.
This is the code for the list view:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
SQLiteDatabase myDB = null;
myDB = this.openOrCreateDatabase(MY_DB_NAME, MODE_PRIVATE, null);.......................
Say, we have a table created as:
create table notes (_id integer primary key autoincrement, created_date date)
To insert a record, I'd use
ContentValues initialValues = new ContentValues();
initialValues.put("date_created", "");
long rowId = mDb.insert(DATABASE_TABLE, null, initialValues);
But how to set the date_created column to "now"? To make it clear, the
initialValues.put("date_created", "datetime('now')");
Is not the right solution. It just sets the column to "datetime('now')" text.
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 RelatedI am looking to the fastest and the correct way to check if a record exists in the database:
CODE:...................
I've a problem with a query in sqlite3.
The query is very simple:
SELECT MAX (INIT_DATE) INIT_DATE FROM TABLE;
When my application execute this query, and the table is empty, a record is returned. I can't understand why a record is being returned if the table is empty. It should return cero results.
I've tried to execute the query in two different ways:
cursor = db.query(true, "TABLE", new String[] {"MAX(INIT_DATE) AS INIT_DATE"}, null, null, null, null, null, null);
cursor = db.rawQuery("SELECT MAX(INIT_DATE) AS INIT_DATE FROM TABLE", null);
I want my app to access database every hour and read next record from the table then update desctop widget and send notification. I know that there is AlarmManager which I can use to register my Intents but they are deleted when the phone is turned off or rebooted. Is there any other android class/service that I would update my application continuously even when I reboot my phone?
View 2 Replies View RelatedI just noticed that all the videos i recorded on my phone are centered instead of being full screen.
My first video was full screen on the internal memory and then i somehow changed it to save to external SD card the recording problem started (i don't know how to change the save settings).
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 RelatedI'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 RelatedI 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 RelatedI have a class like class My data{ String name; int data; Location[] locality.
View 8 Replies View RelatedI 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.
Is possible update the records from SQLite from my Android Application1 from other Application2 Android
View 4 Replies View RelatedIs 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 RelatedIs 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 RelatedI 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
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 RelatedHow to drop a database in Android SDK?
Did not see any methods in android.database.sqlite.SQLiteOpenHelper or android.database.sqlite.SQLiteDatabase classes.
I am able to create, write and read an SQLite Database in my Android App. I have a copy of the Database that is fully populated with data, and I want to get that data into the App's Database. Is it possible to access my populated database from inside my App? Or can I at least create a copy of the populated database and then use that copy? Or do I need to do a .dump and put all the inserts into the Android code?
View 1 Replies View RelatedI have a sqlite database, and i put this file in "assets" folder. The code like below, Pls help and tell what's wrong in this code, How to use my own sqlite database.
CODE:.............
The error message:
CODE:.................
I have a question.
I have this code :
Uri uri = Uri.parse("content://media/external/images/media"); ContentResolver resolver = _ctx.getContentResolver(); resolver.delete(uri, null, null);
But this code doesn't work because I have this error :
06-19 12:41:32.886: VERBOSE/TEST](2285): Unknown or unsupported URL: content://media/external/images/media
Can I have to delete all records on this db?
I'm searching information about how i can access a specific database that to not belong to me, and that is store in /data/data/com.... directory is it possible without root access? it it possible with root access, and how?
View 3 Replies View RelatedI use a sqlite database in my project. The stored data in it must not be available for the user to edit. As I've read here I saw that if you have root access you can alter sqlite database. The only solution would be to encrypt database content, but this would be time consuming for device. Any solution to prevent access to database ?
View 1 Replies View RelatedI need to parse a fairly large XML file (varying between about a hundred kilobytes and several hundred kilobytes), which I'm doing using Xml#parse(String, ContentHandler). I'm currently testing this with a 152KB file.During parsing, I also insert the data in an SQLite database using calls similar to the following: getWritableDatabase().insert(TABLE_NAME, "_id", values). All of this together takes about 80 seconds for the 152KB test file (which comes down to inserting roughly 200 rows).When I comment out all insert statements (but leave in everything else, such as creating ContentValues etc.) the same file takes only 23 seconds.Is it normal for the database operations to have such a big overhead? Can I do anything about that?
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