Develop Reference

Load Images from Assets in Widget remoteView

I am using the following code to load my image into Android widget ImageView:
remoteViews.setImageViewResource(R.id.widget_image, R.drawable.image);
I have to save the image in drawable folder. Is it possible to save the image in assets instead and load it to remoteView?

Using BitmapFactory, you can load an image in assets/ as a Bitmap from an InputStream provided by AssetManager, and then use the RemoteViews#setImageViewBitmap() method to set it on your widget.
For example:
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);
...
try {
InputStream is = context.getAssets().open("image.jpg");
Bitmap bmp = BitmapFactory.decodeStream(is);
remoteViews.setImageViewBitmap(R.id.widget_image, bmp);
}
catch (IOException e) {
e.printStackTrace();
}

Here is the solution :
imageView = (ImageView)findViewById(R.id.iv);
try {
// get input stream
InputStream ims = getAssets().open("download.jpg");
// load image as Drawable
Drawable d = Drawable.createFromStream(ims, null);
// set image to ImageView
imageView.setImageDrawable(d);
}
catch(IOException ex) {
return;
}

Display image button from external source

I'm working on a project where I need to display image buttons with some images saved in the sd card or from an Url. How can I do this? Or what's best practice?
The objective is to change the image on the button only replacing the file in the sd card.
There are other solutions if I don't know which images will be displayed in future?
THX

Here is how to load an image from a URL into a Drawable object:
InputStream is = (InputStream) new URL("http://my.url/path/to/image").getContent();
Drawable buttonBg = Drawable.createFromStream(is, null);
Then set it as the background:
button.setBackgroundDrawable(buttonBg);
or for API 16+ use:
button.setBackground(buttonBg);
If you want to read from a file, use a FileInputStream like so:
FileInputStream fis = openFileInput("/my/path/to/image");
Drawable buttonBg= Drawable.createFromStream(fis, null);

#carmex
Solved:
ImageButton box1 = (ImageButton)findViewById(R.id.box1);
Drawable drawable = GetImg("path/to/image.jpg");
box1.setBackground(drawable);
private Drawable GetImg(String url)
{
try
{
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
}
catch (Exception e)
{
System.out.println("Err="+e); return null;
}
}
Thx a lot.

Bitmap from url without scaling

i am getting bitamap from a url. Everything is fine but i m having small issue i.e my bitmap from url gets scales down. I want bitmap of original size without scaling. How to achieve this. I tried options but no success yet. here is my code:
try {
URL url = new URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
} catch (IOException e) {
e.printStackTrace();
return null;
}
I set this drawable to imagview. But image is scaled down. I want original size and original size is not too big so need to worry about outofmemory exception. Is there any way to avoid scaling while parsing bitmap from url stream.
Thanks.

Directly show image from web without downloading it. Please check the below function . It will show the images from the web into your image view.
public static Drawable LoadImageFromWebOperations(String url) {
try {
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
} catch (Exception e) {
return null;
}
}
then set image to imageview using code in your activity. Maybe this will help you.

Loading images from cache but return a blank screen

i try the example i gotten from here. The example shows how to display a image that is larger then the screen and the screen acting like a window, allowing user to look at the images via scrolling. However, what i want to achieved is similar just that, instead of one single image, i tried to combining 18 smaller images (171X205) into one single image. I am able to did that but to save loading time on downloading of images from the server, i cached the images. Heres the problem, i cant seems to display the images out on screen even though the images are indeed cached. Thus, i tried something else by fetching image from the drawable folder but still the same issue arise. Does anyone have any idea how to go about solving this problem?
A snippets of code to load images from cache:
for(int i =0; i<18; i++)
File cacheMap = new File(context.getCacheDir(), smallMapImageNames.get(i).toString());
if(cacheMap.exists()){
//retrieved from cached
try {
FileInputStream fis = new FileInputStream(cacheMap);
Bitmap bitmap = BitmapFactory.decodeStream(fis)
puzzle.add(bitmap);
}catch(...){}
}else{
Drawable smallMap = LoadImageFromWebOperations(mapPiecesURL.get(i).toString());
if(i==0){
height1 = smallMap.getIntrinsicHeight();
width1 = smallMap.getIntrinsicWidth();
}
if (smallMap instanceof BitmapDrawable) {
Bitmap bitmap = ((BitmapDrawable)smallMap).getBitmap();
FileOutputStream fos = null;
try {
cacheMap.createNewFile();
fos = new FileOutputStream(cacheMap);
bitmap.compress(CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
puzzle.add(bitmap);
}
}
}
The function where it retrieved images from the server
private Drawable LoadImageFromWebOperations(String url) {
// TODO Auto-generated method stub
try
{
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
}catch (Exception e) {
System.out.println("Exc="+e);
return null;
}
}
I am drawing onto a canvas and so no ImageView is use to display the images.

For all of my lazy image loading I use Prime.

how to load image from web?

hello all i have image url getting from web and now i want to display that in may imageview.
pls helm me out.
Thanks In Advance.

Below i mentioned one function that will load image from web and convert it into drawable . So you can set that drawable into ImageView.
public static Drawable LoadImageFromWeb(String url)
{
try
{
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
} catch (Exception e) {
return null;
}
}