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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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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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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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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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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Feb 25, 2009
I need to display an image by specifying the file name instead of by using resource. E.g showImage("background.png") instead of showImage(R.drawable.background). Any one knows how?
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May 8, 2010
I have an image that is currently stored in variable of type "File". File img; What is the easiest way to display this image onto the screen so I can verify it is working correct?
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Jun 8, 2012
I have a png file in my res/drawable-ldpi folder. I'm working in Eclipse with the emulator, but I've tried this on my 2.2.1 Android phone and I get the same behavior. I have an ImageView and I want to set the src programatically, based on a database call. If I just put
Code:
src="@drawable.norusdpyr"
in the Activity's XML file, the file displays fine. BUT, if I put
Code:
String imageresource = "R.drawable." + parsedData[4].toString();
chart.setImageURI(Uri.parse(imageresource));
where parsedData[4].toString() = "nor_usdpyr" I don't see anything. I've also tried
Code:
String imageresource = "android.resource://" + getPackageName() + "/R.drawable." + parsedData[4].toString();
chart.setImageURI(Uri.parse(imageresource));
and
Code:
InputStream is = getClass().getResourceAsStream("/drawable/" + parsedData[4].toString());
chart.setImageDrawable(Drawable.createFromStream(is, ""));
and
Code:
String imageresource = "R.drawable." + parsedData[4].toString();
File file = new File(imageresource);
chart.setImageDrawable(Drawable.createFromPath(file.getAbsolutePath()));
and
Code:
Context context = getApplicationContext();
int ResID = context.getResources().getIdentifier(imageresource, "drawable", "com.KnitCard.project");
chart.setImageResource(ResID);
finally,
Code:
chart.setImageURI(Uri.parse("android.resource://" + getPackageName() + "/R.drawable.nor_usdpyr"));
doesn't work.
None of these work. What am I doing wrong?
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Sep 24, 2010
I have problem with displaying bitmap image on imageview on high density screen (480x800). When the bitmap image loaded from file on sdcard, the image does not scale to fit hdpi screen. On medium density screen it works normal (320x480).code...
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Jul 9, 2009
I created a SQLite database on Android device. The program can read/write to database so the database file has obviously been created. The SQLiteDatabase.mPath is set to
db.mPath = "/data/data/dev.client.android/databases/clientDB.db"
but when I browse the directories on the device I can't locate the file clientDB.db. I looked inside data directory but it appears to be empty.Does anyone know what could be wrong here?
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Jun 22, 2010
package one.two;
import java.util.ArrayList;
import java.util.List;
import android.app.ListActivity;
import android.database.Cursor;
import android.inputmethodservice.Keyboard.Row;
import android.os.Bundle;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView; Code...
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Oct 15, 2010
I am building an app which will let the user take a photo, then add some details which will be stored in a database. I want to be able to store some information (URI?) in the database so that when the user clicks the database entry from a listview it retrieves the photo. I hope it is clear what I want to do. Could I instead use a file path to locate the photo? Or do I need the URI? If I do need the URI then how do I get it?
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Oct 23, 2009
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Jan 14, 2010
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May 9, 2010
I am trying to modify this example:
http://developer.android.com/resources/tutorials/views/hello-gridview.html
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Can anyone instruct me on how I would modify
code...
To display my drawable items instead?
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May 13, 2010
Just wondering if its possible to use the built in image viewer to display an image sourced from a database. I'm hoping I can pass the byte[] as an extra to the ACTION_VIEW intent, but can't find any docs on it so far. Alternatively I'll have to roll my own viewer or first write the image out to a file and pass that to the intent.
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Nov 1, 2010
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I'd like to show a png in the built-in image viewer. Code...
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Jun 9, 2010
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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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How can I open them which have already stored in SQLite?
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Jul 19, 2010
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