Android :: Open File Which Is Stored In SQLite As Blob

Jul 19, 2010

As the title, I create a ByteArray to store the file in blob like this:byte[] red_buf = myCursor.getBlob(1);
But I don't know what's the next step to open the file.

Android :: Open file which is stored in SQLite as blob


Android :: Open File Stored In SQLite As Blob

Jul 19, 2010

As the title, I create a ByteArray to store the file in blob like this: byte[] red_buf = myCursor.getBlob(1);And I wanna use FileOutputStream to open.But I don't know how to do. Can anyone give me a example or website please?

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Android :: Open PDF / Xml Which Stored In A SQLite File?

Jul 5, 2010

How can I open them which have already stored in SQLite?

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Android :: Where To Find Stored Sqlite Db File In My System

Sep 23, 2009

In android am using the SDK 1.5 am using the Database concepts to create the Sqlite Db file but i don't know where the file is stored. any one help me to find that Db file in my system please.

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Android : ContentProvider Storage/memory - Data Can Be Stored In File System - In An SQLite Database

Oct 20, 2010

Please direct me to a description of the techniques that the ContentProvider employs to access data. I am trying to understand how it works as well as what is tunable or even if its meant to be tunable. It the memory management tiered, cached, virtual, flat? Is it file based, shmem based, stream based? Can there be a combination thereof?

Any information, suggestions, or references are welcome. The android fundamentals page says: "The data can be stored in the file system, in an SQLite database, or in any other manner that makes sense;" but the android ContenProvider page barely skins the onion.

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Android :: Storing Images As Blob In Sqlite

Feb 27, 2009

I am currently trying to store an image into the sqlite database as a blob and retrieve it back.I am not sure if this is the correct approach since i dint find much of sample codes related to inserting images in sqlite. I am able to insert values but when i try retrieving them as byte using decodeByteArray it gives me the following error. DEBUG/skia(13003): xxxxxxxxxxx jpeg error 53 Not a JPEG file: starts with 0x%02x 0x%02x.The image retrieving query works fine as i have checked retrieving an image previously stored as blob in a sample database.I have tried storing and retrieving different image files but i am getting the same error.Could any one tell me as how to solve this problem

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Android :: Creating A Drawable From A SQLite Blob

Aug 20, 2010

I'm caching image files as a blob in a SQLite database. I have a similar application on another platform that does the same thing with the same image files. The databases on both platforms report the exact same size for the same images. So I think, but can't guarantee, that the image data is getting into the database intact.But when I try to create a Drawable, the console prints out "DEBUG/skia(267):decoder->decode returned false".

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Android :: Want To Store A Couple Of Wav Files / Blob To Sqlite Right - Recommended Way?

Mar 26, 2010

I'm generating about 6 wav audio files at runtime. I want to store them in internal memory. Is a blob to sqlite the right/recommended way?

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Android :: Store BLOB In Android SQLite Using SQLOpenHelper

Sep 3, 2010

Is there a way to store a BLOB into Android's SQLite using SQLOpenHelper? My BLOB of type InputStream.

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Android :: Stored Procedure Support In Sqlite Database?

Oct 23, 2009

1. Is there any stored procedure support in the sqlite database of Android? and any docs on doing this?

2. Is there any way my Android progam can know the data in the Android native data set have been changed? like contacts, calllog, and calendar? that is, once the data inside the Android native database have been changed, can my program be notified? and how to do it?

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Android :: Tables Created Using SQlite Database Will Be Stored

Oct 16, 2010

Where do the tables created using SQlite database will be stored in Android? how to access them and see the data contained in them.

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Android : Displaying Longitude - Latitude Values Stored In A SQLite

Apr 2, 2010

I am currently in the process of creating an application that records current location of a mobile device in intervals, displaying the route as a coloured line on the device in real-time. At the same time the application is storing the longitude and latitude in a SQLite database as I want the user to be able to bring up that specific route again.The route has a primary key and each waypoint is linked to that route by a foreign key. What would be the easiest way to display the saved route on the map?

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URL Of Image Stored In SQLite Database

Mar 23, 2012

I need to attach image to email from application. Images are being shown from my SQLite database. What would be Uri for that image (e.g. ImageView has that image) so that I can attach it to email/mms.

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Image From Assets Folder Stored In SQLite

Mar 4, 2012

I want to store the location a series of images from the assets folder in my current android app and insert the location into a SQLite database and then display the image in an ImageView.

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Android :: Way To Open And Edit Word File In Droid / App Exist Does It Has An Open API?

Jun 30, 2010

Is there a way to open and edit word file in android and if this application exist does it has an open API?

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Android :: How To Use SQLite Database? (Create / Open)

Apr 18, 2010

I am trying to use

SQLiteDatabase.openDatabase( "/data/data/edwin11.myapp/databases/myapp.db", null, (SQLiteDatabase.CREATE_IF_NECESSARY | SQLiteDatabase.NO_LOCALIZED_COLLATORS));

To create/open a database instead of making use of the SQLiteOpenHelper (because I want to pass in the flag SQLiteDatabase.NO_LOCALIZED_COLLATORS. However, I am getting this exception for that line of code:

04-18 09:50:03.585: ERROR/Database(3471): sqlite3_open_v2("/data/data/edwin11.myapp/databases/myapp.db", &handle, 6, NULL) failed
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): java.lang.RuntimeException: An error occured while executing doInBackground()
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at android.os.AsyncTask$3.done(AsyncTask.java:200)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:234)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:258)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at java.util.concurrent.FutureTask.run(FutureTask.java:122)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:648)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:673)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at java.lang.Thread.run(Thread.java:1060)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): Caused by: android.database.sqlite.SQLiteException: unable to open database file
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at android.database.sqlite.SQLiteDatabase.dbopen(Native Method)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1584)
04-18 09:50:03.665: ERROR/AndroidRuntime(3471): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:638)...

Doing some testing just before that line of code (using File.isExists) shows that the file /data/data/edwin11.myapp/databases/myapp.db does not exist. Would that be the cause of the error? (Or am I just using SQLiteDatabase.openDatabase the wrong way?) Would it help if I create the file beforehand? (Shouldn't that be taken care of by the SQLiteDatabase.CREATE_IF_NECESSARY flag that I passed in?) If creating the file manually is the way to go, is it just an empty file, or do I have to write something to it?

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Android :: How To Close And Re-open Sqlite Database

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?

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Android : Sqlite Open Helper Db Adapter Design

Jul 27, 2009

I am writing an app that has a single database file with 3 tables ( AudioTable, PeopleMap, ImageTable) and am looking at 2 design alternatives:

1. A -single- database adapter (myDBAdapter.java) which uses a database helper class that extends SQLiteOpenHelper. The adapter class has separate methods for accessing and updating rows in each of the 3 tables. ie. insertAudio() insertPeople() insertImage()

2. 3 different database adapters for each table all using the same db file.. 1. audioDBAdapter.java, 2. peopleDBAdapter.java, 3. imageDBAdapter.java) Each adapter uses it's own db helper class (extending SQLiteOpenHelper)

While option 2 offers better encapsulation of the 3 classes (and corresponding data), I'm wondering if there couldbe a performance overhead or does the SQLiteOpenHelper implementation handle this without much overhead ?

Or is there some other way I can get better encapsulation with option 1. something similar to the way the Contacts Provider nicely allows for separate instances of Contacts.People, Contacts.Phones, Contacts.Settings, etc.

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Android :: Load Stored JPG File Into ImageView?

Sep 10, 2010

I have valid JPG files and now I want to load them into a layout containing an ImageView. I have code to findViewId(R.id.myimage). I followed some sample code using File but it did not work. The file is stored at /data/data/com.myapp/files/someimage.jpg.

What is the easiest and efficient way to load and display?

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Android :: Need File Manager / That Open An HTML File From SD Card?

Jun 18, 2010

How come this is the only file manager on the market (that I've found... I went through quite a few) that can open an HTML file from your SD card? I was a loyal user of Estrogen until I found that it couldn't.

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Android :: How To Acces File Stored In Project Folder?

Jun 23, 2010

I have several files stored in my project /res/values folder, is there any way to open and read these files from my android application? Each file contains text informations about one level of my game.

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Android :: Way To Write ContentProvider For Content Not Stored In File Nor DB?

Jan 7, 2010

I'm writing a ContentProvider that will provide content that is not stored in a file or database.I understand hat I have to overwrite openAssetFile() method.My problem is that I don't know how to create AssetFileDescriptor from data in memory (byte array or stream).Can anybody please point me to the right direction?I was digging in Android source where they use MemoryFile but I can't obtain ParcelFileDescriptor from MemoryFile.

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Android :: How To Write ContentProvider For Content Not Stored In File Nor DB?

Aug 12, 2010

I need to write a ContentProvider to provide a dynamically generated audio stream to be playable by MediaPlayer. That is MediaPlayer will use ContentResolver.openInputStream() to play it. I have read a lot of discussions about this problem but no one had a solution yet. The most recent one was in January 2010: http://groups.google.com/group/android-developers/browse_thread/threa.

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Android :: Get Selected Image File Location Stored On SD

Jul 31, 2010

I am currently making an app which works with images. I need to implement functionality where the user picks a file stored on the SD card. Once they pick the picture (using the Android gallery), the the file-location of the image will be sent to another Activity, where other work will be done upon it. I have seen similar posts here on SD, but none to answer my question specifically. Basically this is the code I am doing when the user clicks the "Load a Picture" button:

// Create a new Intent to open the picture selector:
Intent loadPicture = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// To start it, run the startActivityForResult() method:
startActivityForResult(loadPicture, SELECT_IMAGE);

From that code, I then have a onActivityResult() method to listen to the call-back:
// If the user tried to select an image: if(requestCode == SELECT_IMAGE) {
// Check if the user actually selected an image: if(resultCode == Activity.RESULT_OK) {
// This gets the URI of the image the user selected: Uri selectedImage = data.getData();
// Create a new Intent to send to the next Activity:
Intent i = new Intent(currentActivty.this, nextActivity.class);

// - Problem Area -
// I would like to send the filename to the Intent object, and send it over.
// However, the selectedImage.toString() method will return a
// "content://" string instead of a file location. How do I get a file
// location from that URI object? i.putExtra("PICTURE_LOCATION", selectedImage.toString());
// Start the activity outlined with the Intent above: startActivity(i);

As the code above states, the uri.toString() will return a content:// string instead of the file location of the selected picture. How do I obtain the file location?
Another possible solution is to send over the content:// string and convert that into a Bitmap (which is what happens in the next Activity). However, I don't know how to do that.

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Android :: Where File With Actual Stored SharedPreferences Located?

Apr 2, 2010

Does somebody knows where the file with the actual stored SharedPreferences is located?

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Will Android Be Able To Display Image If Name Of File Stored In Database?

Aug 11, 2012

Here is what I am trying to do:

- have a database that contains a word, and the name of an image file associated with that word.
- the words from the database will be displayed in a listview
- when the word is selected, a new activity will start displaying the word and the image in an image view.

Would it be best to store the terms in an array and have the list view populate from this array and then pull from the database onitemclick? Or can the list view be populated with the terms from the database?

Will android be able to display the image if the name of the file is stored in the db?

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Android : How To Open A File Browser To Upload A File

Nov 14, 2010

I'm a novice user writing my first android application. I have the need to upload a file to a webserver from the device. I googled enough before joining this forum and not at one place did I find a suitable solution. I would like to know how to launch the file browser when user clicks on the "Browse" button to upload a file.

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Android :: Play Audio From Stream / Stored Cache File

Feb 10, 2010

How to play audio from a stream in android? I will get input stream from an online link( like continuous FM). I need to cache the stream and play it. I searched a lot in sites,,,but didnt get.They show option of playing from a stored file. There is no option to play from a stream.

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Android :: How To Read Image File Stored In Internal Memory ?

Sep 27, 2010

In my android application I an storing an image file in internal memory using below code-
FileOutputStream fos = con.openFileOutput(fileName, con.MODE_PRIVATE);
fos.write(baf.toByteArray()); // baf - ByteArrayBuffer
fos.close();
Can anyone please help me to read this image file from internal display it in an activity?

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Android :: Attach Text File Stored Locally In Application Directory?

Jul 9, 2010

I have an Android app that saves a text file directly onto the phone, in the app's install directory. I need to allow the user to create a new email, attaching this saved text file. When I start the intent to send the email, everything shows up in Gmail correctly, but the attachment does not get sent. All of my searches on stack overflow seem to only deal with attaching an image file from the SD card. Below is the code that I used. Please let me know if I have done something incorrectly.

File myFile = new File(getFilesDir() + "/" + "someFile.txt");
FileOutputStream stream = null;
if( file != null )
steam = openFileOutput("someFile.txt", Context.MODE_WORLD_READABLE);
stream.write(some_data);
Uri uri = Uri.fromFile(myFile);
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.setType("text/plain");
sendIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
sendIntent.putExtra(Intent.EXTRA_TEXT, email_text);
sendIntent.putExtra(Intent.EXTRA_STREAM, uri);
file.close();
startActivity(Intent.createChooser(sendIntent, "Email:"));

I've also tried sendIntent.setType("application/octet-stream"); but that didn't make a difference. I'm at a loss for why the file doesn't attach and get sent.

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