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2014/10/16 ¤W¤È 08:12:12
android Programming Glossary: dbWhat are the best practices for SQLite on Android? http://stackoverflow.com/questions/2493331/what-are-the-best-practices-for-sqlite-on-android the best practices when executing queries on an SQLite db within an Android app Is it safe to run inserts deletes and.. Or should I use the UI Thread I suppose that db queries can be heavy and should not use the UI thread as it.. database connection regardless. So one helper instance one db connection. Even if you use it from multiple threads one connection..
How do I use prepared statements in SQlite in Android? http://stackoverflow.com/questions/433392/how-do-i-use-prepared-statements-in-sqlite-in-android in Android all the time it's quite simple SQLiteDatabase db dbHelper.getWritableDatabase SQLiteStatement stmt db.compileStatement.. Android all the time it's quite simple SQLiteDatabase db dbHelper.getWritableDatabase SQLiteStatement stmt db.compileStatement.. db dbHelper.getWritableDatabase SQLiteStatement stmt db.compileStatement SELECT FROM Country WHERE code stmt.bindString..
sqlite example program in android [closed] http://stackoverflow.com/questions/4721732/sqlite-example-program-in-android public static final String DATABASE_NAME QuadDeals.db public static final int DATABASE_VERSION 1 Create a helper object.. @Override public void onCreate SQLiteDatabase db try db.execSQL CREATE TABLE TABLE_NAME _ID INTEGER PRIMARY.. @Override public void onCreate SQLiteDatabase db try db.execSQL CREATE TABLE TABLE_NAME _ID INTEGER PRIMARY KEY AUTOINCREMENT..
Android backup/restore: how to backup an internal database? http://stackoverflow.com/questions/5282936/android-backup-restore-how-to-backup-an-internal-database Hence I used the FileBackupHelper pointed it to my .db file in databases introduced locks around any db operation such.. it to my .db file in databases introduced locks around any db operation such as db.insert in my ContentProviders and even.. databases introduced locks around any db operation such as db.insert in my ContentProviders and even tried creating the databases..
how to store Image as blob in Sqlite & how to retrieve it? http://stackoverflow.com/questions/7331310/how-to-store-image-as-blob-in-sqlite-how-to-retrieve-it an image from url into a sqlite database. For that I use db new DataBase getApplicationContext URL url new URL http sree.cc.. filedata.put DataBase.IMG_SRC barb.toByteArray db.insert DataBase.Table_Img null filedata In the Insert public.. INTO tableImg ID IMG_SRC VALUES ' 1 ' ' dataToInsert ' db.execSQL sql For the retrieval of image Cursor cursor db.selectDataToShow..
Android - android.os.NetworkOnMainThreadException http://stackoverflow.com/questions/9413625/android-android-os-networkonmainthreadexception .toString String pass password.getText .toString sendFeedback pass email public void sendFeedback String pass String.. .toString sendFeedback pass email public void sendFeedback String pass String email Log.d 1 pass Log.d 1 email Go to.. String pass String email Log.d 1 pass Log.d 1 email Go to db and check if these r legit How do I do that ArrayList NameValuePair..
Copy Database from assets folder in unrooted device http://stackoverflow.com/questions/10738623/copy-database-from-assets-folder-in-unrooted-device from assets folder in unrooted device I am trying to copy DB from assets folder to device. This code is working fine on Emulator.. StoreDatabase File DbFile new File data data packagename DBname.sqlite if DbFile.exists System.out.println file already.. Created successfully InputStream is this.getAssets .open DBname.sqlite FileOutputStream fos new FileOutputStream DbFile..
Permission to write to the SD card http://stackoverflow.com/questions/2121833/permission-to-write-to-the-sd-card SD card I would like my app to archive the application DB to the SD card. In my code I check if the directory canWrite..
Android JSON HttpClient to send data to PHP server with HttpResponse http://stackoverflow.com/questions/2540786/android-json-httpclient-to-send-data-to-php-server-with-httpresponse one for each form entry the entries come from the DB instead of the static example I am using . Firstly I changed..
How can I refresh MediaStore on Android? http://stackoverflow.com/questions/3300137/how-can-i-refresh-mediastore-on-android on all the media files on the card and provides a SQLite DB which can be queried by music applications. Most music applications.. playlists synchronised to the device remain in this SQLite DB even after being deleted from the SD Card. It's gotten to the..
How to develop a soft keyboard for Android? http://stackoverflow.com/questions/3480715/how-to-develop-a-soft-keyboard-for-android HTTP connections to synchronize keyboard data with a cloud DB and other phones I have Can I open other windows screens from..
Android - SQlite Getting nearest locations (with latitude and longitude) http://stackoverflow.com/questions/3695224/android-sqlite-getting-nearest-locations-with-latitude-and-longitude the data because i don't have the distance column in my DB. That would mean updating the DB everytime the location changes.. the distance column in my DB. That would mean updating the DB everytime the location changes and that's a waste of battery..
Multiple Table SQLite DB Adapter(s) in Android? http://stackoverflow.com/questions/4063510/multiple-table-sqlite-db-adapters-in-android Table SQLite DB Adapter s in Android I was reading the Android SQLite NotePad.. Android SQLite NotePad tutorial that referenced creating a DB Adapter class to create and access a DB table. When dealing.. creating a DB Adapter class to create and access a DB table. When dealing with a multi table SQLite Database is it..
How to do a HTTP Post in Android? http://stackoverflow.com/questions/4470936/how-to-do-a-http-post-in-android and password it will post to server and check it with the DB using a php page if the login success then go to next screen..
SQLiteOpenHelper problem with fully qualified DB path name http://stackoverflow.com/questions/5332328/sqliteopenhelper-problem-with-fully-qualified-db-path-name problem with fully qualified DB path name In my app I use... myFilesDir new File Environment.getExternalStorageDirectory.. Android data com.mycompany.myApp files I need a SQLite DB which I want to store on the SD card so I extend SQLiteOpenHelper.. call getReadableDatabase or getWriteableDatabase the empty DB is created on the SD card and onCreate populates it. So here's..
Send data from android to server via JSON http://stackoverflow.com/questions/6523761/send-data-from-android-to-server-via-json connect with PHP server before write php to connect to DB right php android mysql json share improve this question.. send new Send Connect to database. server connectDB Retrieve the data. userID _POST 'userID' date _POST 'date' time.. accelY accelZ Disconnect from database. server disconnectDB This is an example I used recently. Just to note in the php..
Android SQLLite MultiTable Database Development http://stackoverflow.com/questions/19624946/android-sqllite-multitable-database-development null private Context context private static SQLiteDatabase Db private Database Context context super context DATABASE_NAME.. null Singleton new Database c.getApplicationContext Db Singleton.getWritableDatabase return Singleton public SQLiteDatabase.. return Singleton public SQLiteDatabase getDatabase return Db public synchronized void close if Singleton null Db.isOpen Db.close..
How do I create a database in android? [closed] http://stackoverflow.com/questions/2729438/how-do-i-create-a-database-in-android from Android notepad sample here is the class PersonDbHelper for manipulating table Biodata . import java.io.FileNotFoundException.. import android.util.Log public class PersonDbHelper class Row extends Object public long _Id public String.. DATABASE_VERSION 1 private SQLiteDatabase db public PersonDbHelper Context ctx try db ctx.openDatabase DATABASE_NAME null..
Connect MySQL database from Android http://stackoverflow.com/questions/4316763/connect-mysql-database-from-android helloandroid.com Everything is configured fine the MySQL Db IIS with FASTCGi PHP tools and drivers. even the script below..
sqlite example program in android [closed] http://stackoverflow.com/questions/4721732/sqlite-example-program-in-android values catch Exception e Log.v Error e to retrieve from Db Cursor c getContentResolver .query Constants.CONTENT_URI null..
webserivce messages in listview with smileys http://stackoverflow.com/questions/7537345/webserivce-messages-in-listview-with-smileys For example when string occurs put a smiley. I created a Db and added 4 fields to it ID Position Special Character URL...
Best way to load external data in android http://stackoverflow.com/questions/7681510/best-way-to-load-external-data-in-android Cursor containing the data it has cached in a local Sqlite Db ContentProvider asks a Service or SyncService to collect fresh..
What are the best practices for SQLite on Android? http://stackoverflow.com/questions/2493331/what-are-the-best-practices-for-sqlite-on-android best practices for SQLite on Android What would be considered the best practices when executing queries on an SQLite db within an Android app Is it safe to run inserts deletes and select queries from an AsyncTask's doInBackground Or should.. run inserts deletes and select queries from an AsyncTask's doInBackground Or should I use the UI Thread I suppose that db queries can be heavy and should not use the UI thread as it can lock up the app resulting in an ANR. If I have several AsyncTasks.. really doesn't. Call the read only and you'll get the write database connection regardless. So one helper instance one db connection. Even if you use it from multiple threads one connection at a time. The SqliteDatabase object uses java locks..
How do I use prepared statements in SQlite in Android? http://stackoverflow.com/questions/433392/how-do-i-use-prepared-statements-in-sqlite-in-android share improve this question I use prepared statements in Android all the time it's quite simple SQLiteDatabase db dbHelper.getWritableDatabase SQLiteStatement stmt db.compileStatement SELECT FROM Country WHERE code stmt.bindString 1 US.. share improve this question I use prepared statements in Android all the time it's quite simple SQLiteDatabase db dbHelper.getWritableDatabase SQLiteStatement stmt db.compileStatement SELECT FROM Country WHERE code stmt.bindString 1 US stmt.execute..
sqlite example program in android [closed] http://stackoverflow.com/questions/4721732/sqlite-example-program-in-android public class Bru_Press_Data extends SQLiteOpenHelper public static final String DATABASE_NAME QuadDeals.db public static final int DATABASE_VERSION 1 Create a helper object for the Events database public Bru_Press_Data Context.. Bru_Press_Data Context ctx super ctx DATABASE_NAME null DATABASE_VERSION @Override public void onCreate SQLiteDatabase db try db.execSQL CREATE TABLE TABLE_NAME _ID INTEGER PRIMARY KEY AUTOINCREMENT TITLE TEXT UNIQUE CITYID TEXT catch Exception.. Context ctx super ctx DATABASE_NAME null DATABASE_VERSION @Override public void onCreate SQLiteDatabase db try db.execSQL CREATE TABLE TABLE_NAME _ID INTEGER PRIMARY KEY AUTOINCREMENT TITLE TEXT UNIQUE CITYID TEXT catch Exception e..
Android backup/restore: how to backup an internal database? http://stackoverflow.com/questions/5282936/android-backup-restore-how-to-backup-an-internal-database There is no BackupHelper specifically for these typical databases. Hence I used the FileBackupHelper pointed it to my .db file in databases introduced locks around any db operation such as db.insert in my ContentProviders and even tried creating.. databases. Hence I used the FileBackupHelper pointed it to my .db file in databases introduced locks around any db operation such as db.insert in my ContentProviders and even tried creating the databases directory before onRestore because.. I used the FileBackupHelper pointed it to my .db file in databases introduced locks around any db operation such as db.insert in my ContentProviders and even tried creating the databases directory before onRestore because it does not exist..
how to store Image as blob in Sqlite & how to retrieve it? http://stackoverflow.com/questions/7331310/how-to-store-image-as-blob-in-sqlite-how-to-retrieve-it Image as blob in Sqlite how to retrieve it I want to store an image from url into a sqlite database. For that I use db new DataBase getApplicationContext URL url new URL http sree.cc wp content uploads schogini_team.png URLConnection ucon.. 1 barb.append byte current ContentValues filedata new ContentValues filedata.put DataBase.IMG_SRC barb.toByteArray db.insert DataBase.Table_Img null filedata In the Insert public void insert String tableImg Object object ContentValues dataToInsert.. dataToInsert TODO Auto generated method stub String sql INSERT INTO tableImg ID IMG_SRC VALUES ' 1 ' ' dataToInsert ' db.execSQL sql For the retrieval of image Cursor cursor db.selectDataToShow DataBase.Table_Img DataBase.IMG_SRC byte imageByteArray..
Android - android.os.NetworkOnMainThreadException http://stackoverflow.com/questions/9413625/android-android-os-networkonmainthreadexception public void onClick View v String email loginEmail.getText .toString String pass password.getText .toString sendFeedback pass email public void sendFeedback String pass String email Log.d 1 pass Log.d 1 email Go to db and check if these.. loginEmail.getText .toString String pass password.getText .toString sendFeedback pass email public void sendFeedback String pass String email Log.d 1 pass Log.d 1 email Go to db and check if these r legit How do I do that ArrayList NameValuePair.. sendFeedback pass email public void sendFeedback String pass String email Log.d 1 pass Log.d 1 email Go to db and check if these r legit How do I do that ArrayList NameValuePair postParameters new ArrayList NameValuePair postParameters.add..
Copy Database from assets folder in unrooted device http://stackoverflow.com/questions/10738623/copy-database-from-assets-folder-in-unrooted-device Database from assets folder in unrooted device I am trying to copy DB from assets folder to device. This code is working fine on Emulator and rooted Device. I just want to know is it create.. problem on unrooted device or it will work same. private void StoreDatabase File DbFile new File data data packagename DBname.sqlite if DbFile.exists System.out.println file already exist No need to Create else try DbFile.createNewFile System.out.println.. else try DbFile.createNewFile System.out.println File Created successfully InputStream is this.getAssets .open DBname.sqlite FileOutputStream fos new FileOutputStream DbFile byte buffer new byte 1024 int length 0 while length is.read..
Permission to write to the SD card http://stackoverflow.com/questions/2121833/permission-to-write-to-the-sd-card to write to the SD card I would like my app to archive the application DB to the SD card. In my code I check if the directory canWrite and if not then throw an IOException. In this perticular instance..
Android JSON HttpClient to send data to PHP server with HttpResponse http://stackoverflow.com/questions/2540786/android-json-httpclient-to-send-data-to-php-server-with-httpresponse 3 of the same form with different data so I create 3 JSONObjects one for each form entry the entries come from the DB instead of the static example I am using . Firstly I changed the call over a bit String url http www.myserver.com ServiceMatalan.php..
How can I refresh MediaStore on Android? http://stackoverflow.com/questions/3300137/how-can-i-refresh-mediastore-on-android card is un mounted and re mounted. This service collects data on all the media files on the card and provides a SQLite DB which can be queried by music applications. Most music applications use this service as it saves on battery drain associated.. using android I've consistently had a problem whereby M3U playlists synchronised to the device remain in this SQLite DB even after being deleted from the SD Card. It's gotten to the point where I now have a collection of about 40 playlists..
How to develop a soft keyboard for Android? http://stackoverflow.com/questions/3480715/how-to-develop-a-soft-keyboard-for-android I could do with a normal Android application Can I do HTTP connections to synchronize keyboard data with a cloud DB and other phones I have Can I open other windows screens from a key press e.g. to display a custom input interface different..
Android - SQlite Getting nearest locations (with latitude and longitude) http://stackoverflow.com/questions/3695224/android-sqlite-getting-nearest-locations-with-latitude-and-longitude did it in my custom SimpleCursorAdapter but I can't sort the data because i don't have the distance column in my DB. That would mean updating the DB everytime the location changes and that's a waste of battery and performance. So if someone.. but I can't sort the data because i don't have the distance column in my DB. That would mean updating the DB everytime the location changes and that's a waste of battery and performance. So if someone has any idea on sorting the..
Multiple Table SQLite DB Adapter(s) in Android? http://stackoverflow.com/questions/4063510/multiple-table-sqlite-db-adapters-in-android Table SQLite DB Adapter s in Android I was reading the Android SQLite NotePad tutorial that referenced creating a DB Adapter class to create.. Table SQLite DB Adapter s in Android I was reading the Android SQLite NotePad tutorial that referenced creating a DB Adapter class to create and access a DB table. When dealing with a multi table SQLite Database is it best practice to create.. I was reading the Android SQLite NotePad tutorial that referenced creating a DB Adapter class to create and access a DB table. When dealing with a multi table SQLite Database is it best practice to create a different Adapter Class for each..
How to do a HTTP Post in Android? http://stackoverflow.com/questions/4470936/how-to-do-a-http-post-in-android app development what i need is i have two textbox username and password it will post to server and check it with the DB using a php page if the login success then go to next screen else show a msg box showing login error how can i do that public..
SQLiteOpenHelper problem with fully qualified DB path name http://stackoverflow.com/questions/5332328/sqliteopenhelper-problem-with-fully-qualified-db-path-name problem with fully qualified DB path name In my app I use... myFilesDir new File Environment.getExternalStorageDirectory .getAbsolutePath Android data.. This is fine and the resulting path is... mnt sdcard Android data com.mycompany.myApp files I need a SQLite DB which I want to store on the SD card so I extend SQLiteOpenHelper as follows... public class myDbHelper extends SQLiteOpenHelper.. with default data... So far so good the first time I call getReadableDatabase or getWriteableDatabase the empty DB is created on the SD card and onCreate populates it. So here's the problem the app is in beta testing with maybe 5 or 6..
Send data from android to server via JSON http://stackoverflow.com/questions/6523761/send-data-from-android-to-server-via-json 10.0.2.2 city.php This means I need to code my application that connect with PHP server before write php to connect to DB right php android mysql json share improve this question To send data to server you could do this private void sendData.. '.. SendAPI.php' deals with sending querys. server new Connection send new Send Connect to database. server connectDB Retrieve the data. userID _POST 'userID' date _POST 'date' time _POST 'time' accelX _POST 'accelX' accelY _POST 'accelY'.. send sendAccelerationData userID date time timeStamp accelX accelY accelZ Disconnect from database. server disconnectDB This is an example I used recently. Just to note in the php file. I import Connection.php this just deals with the connection..
Android SQLLite MultiTable Database Development http://stackoverflow.com/questions/19624946/android-sqllite-multitable-database-development ................. private static Database Singleton null private Context context private static SQLiteDatabase Db private Database Context context super context DATABASE_NAME null DATABASE_VERSION this.context context public static synchronized.. static synchronized Database getInstance Context c if Singleton null Singleton new Database c.getApplicationContext Db Singleton.getWritableDatabase return Singleton public SQLiteDatabase getDatabase return Db public synchronized void close.. c.getApplicationContext Db Singleton.getWritableDatabase return Singleton public SQLiteDatabase getDatabase return Db public synchronized void close if Singleton null Db.isOpen Db.close @Override protected void finalize throws Throwable..
How do I create a database in android? [closed] http://stackoverflow.com/questions/2729438/how-do-i-create-a-database-in-android not then we have to create a database and a table. As an example from Android notepad sample here is the class PersonDbHelper for manipulating table Biodata . import java.io.FileNotFoundException import java.util.ArrayList import java.util.List.. android.database.SQLException import android.database.sqlite.SQLiteDatabase import android.util.Log public class PersonDbHelper class Row extends Object public long _Id public String code public String name public String gender private static.. final String DATABASE_TABLE BIODATA private static final int DATABASE_VERSION 1 private SQLiteDatabase db public PersonDbHelper Context ctx try db ctx.openDatabase DATABASE_NAME null catch FileNotFoundException e try db ctx.createDatabase..
Connect MySQL database from Android http://stackoverflow.com/questions/4316763/connect-mysql-database-from-android parsing data e.toString This snippet is taken from http helloandroid.com Everything is configured fine the MySQL Db IIS with FASTCGi PHP tools and drivers. even the script below when called from browser with url http 192.xxx.xx.x.xxx getUser.php..
sqlite example program in android [closed] http://stackoverflow.com/questions/4721732/sqlite-example-program-in-android a2 getContentResolver .insert Constants.CONTENT_URI values catch Exception e Log.v Error e to retrieve from Db Cursor c getContentResolver .query Constants.CONTENT_URI null null null null int a c.getCount Log.v Count a int columnIndex..
webserivce messages in listview with smileys http://stackoverflow.com/questions/7537345/webserivce-messages-in-listview-with-smileys them only once. Use your own tags inside text for smileys. For example when string occurs put a smiley. I created a Db and added 4 fields to it ID Position Special Character URL. So i was able to display the corresponding specialcharcter when..
Best way to load external data in android http://stackoverflow.com/questions/7681510/best-way-to-load-external-data-in-android resources from a ContentProvider ContentProvider returns a Cursor containing the data it has cached in a local Sqlite Db ContentProvider asks a Service or SyncService to collect fresh data from the web service Your activity makes use of Cursor..
http://stackoverflow.com/questions/5834102/cursor-and-adapter Environment.getExternalStorageDirectory .toString File dbfile new File extStorageDirectory Aero Technologies flyDroid dB flyDroid.db SQLiteDatabase db SQLiteDatabase.openOrCreateDatabase dbfile null Log.i tag db opened try db.rawQuery SELECT.. .toString File dbfile new File extStorageDirectory Aero Technologies flyDroid dB flyDroid.db SQLiteDatabase db SQLiteDatabase.openOrCreateDatabase dbfile null Cursor databaseCursor db.rawQuery SELECT..
System services not available to Activities before onCreate? http://stackoverflow.com/questions/5905587/system-services-not-available-to-activities-before-oncreate .toString static File dbfile new File extStorageDirectory Aero Technologies flyDroid dB flyDroid.db static SQLiteDatabase db SQLiteDatabase.openOrCreateDatabase dbfile null Default List Order Label Num Ascending..
How can I Reuse Methods for ListViews? http://stackoverflow.com/questions/5914823/how-can-i-reuse-methods-for-listviews extStorageDirectory Environment.getExternalStorageDirectory .toString File dbfile new File extStorageDirectory XXX xxx dB xxx.db SQLiteDatabase db SQLiteDatabase.openOrCreateDatabase dbfile null END My Adapter AdaperAC public class AdapterAC.. Environment.getExternalStorageDirectory .toString File dbfile new File extStorageDirectory myComp myApp dB myApp.db SQLiteDatabase db SQLiteDatabase.openOrCreateDatabase dbfile null private static final String QUERY_KEY QUERY_KEY..
Calculate Decibel from amplitude - Android media recorder http://stackoverflow.com/questions/6571894/calculate-decibel-from-amplitude-android-media-recorder
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