Develop Reference

Android downloading bitmap from url

I have another small problem,
I have a link to my picture in standard format however I need auth token at the end to access the image, so whenever I type it inside my webbrowser with correct auth token image is beign autimatically downloaded.
And here is my question, how am I suppossed to download such image in android to bitmap?
Because using
final URL bitmapUrl = new URL(imageUrl);
bitmap = BitmapFactory.decodeStream(bitmapUrl.openConnection().getInputStream());
Doesnt work...

private Bitmap getBitmap(String url)
{
File f=fileCache.getFile(url);
//from SD cache
Bitmap b = decodeFile(f);
if(b!=null)
return b;
//from web
try {
Bitmap bitmap=null;
URL imageUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection)imageUrl.openConnection();
conn.setConnectTimeout(70000);
conn.setReadTimeout(70000);
conn.setRequestProperty("Auth_keyName", "Value");// if authentication required
conn.setInstanceFollowRedirects(true);
InputStream is=conn.getInputStream();
OutputStream os = new FileOutputStream(f);
Utils.CopyStream(is, os);
os.close();
conn.disconnect();
bitmap = decodeFile(f);
return bitmap;
} catch (Throwable ex){
ex.printStackTrace();
if(ex instanceof OutOfMemoryError)
memoryCache.clear();
return null;
}
}

try this method to download bitmap
public Bitmap downloadBitmap(String src) {
try {
java.net.URL url = new java.net.URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap bmp= BitmapFactory.decodeStream(input);
return bmp;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}

Can't retrieve image from QR Generator API Android

I am trying to generate a QR code in my app by sending a HTTP request to a QR generator API and placing the image into an imageview. I'm just getting a blank screen however. I've tried a couple of different solutions that I've found but no luck. Here is the code that I am using. I've also added the internet permission in the manifest
activity_main.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<ImageView android:id="#+id/qrImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
</RelativeLayout>
MainActivity.java
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView imageview = (ImageView) findViewById(R.id.qrImageView);
String qrURL = "http://api.qrserver.com/v1/create-qr-code/?data=thisisatest&size=300x300";
String src = "QRGenerator";
Drawable qrCode=null;
try {
qrCode = drawable_from_url(qrURL, src);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
imageview.setImageDrawable(qrCode);
}
Drawable drawable_from_url(String qurl, String src_name) throws MalformedURLException, IOException {
URL url = new URL(qurl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
InputStream is = connection.getInputStream();
Drawable d = Drawable.createFromStream(is, src_name);
return d;
}
}

You'll have to download the image firstly:
public static Bitmap loadBitmap(String url) {
Bitmap bitmap = null;
InputStream in = null;
BufferedOutputStream out = null;
try {
in = new BufferedInputStream(new URL(url).openStream(), IO_BUFFER_SIZE);
final ByteArrayOutputStream dataStream = new ByteArrayOutputStream();
out = new BufferedOutputStream(dataStream, IO_BUFFER_SIZE);
copy(in, out);
out.flush();
final byte[] data = dataStream.toByteArray();
BitmapFactory.Options options = new BitmapFactory.Options();
//options.inSampleSize = 1;
bitmap = BitmapFactory.decodeByteArray(data, 0, data.length,options);
} catch (IOException e) {
Log.e(TAG, "Could not load Bitmap from: " + url);
} finally {
closeStream(in);
closeStream(out);
}
return bitmap;
}
Then use the Imageview.setImageBitmap to set bitmap into the ImageView

I've solved it. I was running it on an emulator that had no internet connection, so it obviously couldn't contact the API. I ran it on my phone and it worked. I'll leave the question up for reference for others. Thanks for the input

How to download a image from URL in App

I'd like to know how I can download an Image from a given URL and display it inside an ImageView. And is there any permissions required to mention in the manifest.xml file?

You need to put this permission to access the Internet
<uses-permission android:name="android.permission.INTERNET" />
you can try this code.
String imageurl = "YOUR URL";
InputStream in = null;
try
{
Log.i("URL", imageurl);
URL url = new URL(imageurl);
URLConnection urlConn = url.openConnection();
HttpURLConnection httpConn = (HttpURLConnection) urlConn;
httpConn.connect();
in = httpConn.getInputStream();
}
catch (MalformedURLException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
Bitmap bmpimg = BitmapFactory.decodeStream(in);
ImageView iv = "YOUR IMAGE VIEW";
iv.setImageBitmap(bmpimg);

Use background thread to get image and after getting image set it in imageview using hanndler.
new Thread(){
public void run() {
try {
Bitmap bitmap = BitmapFactory.decodeStream(new URL("http://imageurl").openStream());
Message msg = new Message();
msg.obj = bitmap;
imageHandler.sendMessage(msg);
} catch (Exception e) {
e.printStackTrace();
}
}
}.start();
Handler code where we set downloaded image in imgaeview.
Handler imageHandler = new Handler(){
public void handleMessage(Message msg) {
if(msg.obj!=null && msg.obj instanceof Bitmap){
imageview.setBackgroundDrawable(new BitmapDrawable((Bitmap)msg.obj));
}
};
};
And ofcourse you need internet permission.
<uses-permission android:name="android.permission.INTERNET" />

You need to set usage permission of INTERNET in android manifest file and use java.net.URL and java.net.URLConnection classes to request the URL.

There is the BitmapFactory-class which can do that. It can create a Bitmap-object from an InputStream, which can then be displayed in an ImageView.
Something you should know is, that using a normal URLConnection to get an InputStream on a URL-object does not always work with the bitmap-factory. A work-around is presented here: Android: Bug with ThreadSafeClientConnManager downloading images

look this:
Option A:
public static Bitmap getBitmap(String url) {
Bitmap bm = null;
try {
URL aURL = new URL(url);
URLConnection conn = aURL.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
bm = BitmapFactory.decodeStream(new FlushedInputStream(is));
bis.close();
is.close();
} catch (Exception e) {
e.printStackTrace();
}
return bm;
}
Option B:
public Bitmap getBitmapFromURL(String src) {
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);
input.close();
return myBitmap;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
Jus run the method in a background thread.

Unable to retrieve the image of https format for facebook in android?

I am trying to get images from facebook using following method. I'm getting an error "SSL denied". I got the image urls from the facebook API. The image urls are of facebook profile pictures.
ImageView image=(ImageView)view.findViewById(R.id.iView);
String imageurl=https://graph.facebook.com/100000685876576/picture;
Drawable drawable=LoadImageFromWebOperations(imageurl);
image.setImageDrawable(drawable);
private Drawable LoadImageFromWebOperations(String url) {
try {
InputStream is = (InputStream) new URL(url).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
} catch (Exception e) {
//Log.e("DEMO ADAPTER",e.toString());
return null;
}
}
can anyone help me out...
Thanks.

try this
public static Bitmap downloadfile(String fileurl)
{
Bitmap bmImg = null;
URL myfileurl =null;
try
{
myfileurl= new URL(fileurl);
}
catch (MalformedURLException e)
{
e.printStackTrace();
}
try
{
HttpURLConnection conn=
(HttpURLConnection)myfileurl.openConnection();
conn.setDoInput(true);
conn.connect();
int length = conn.getContentLength();
if(length>0)
{
int[] bitmapData =new int[length];
byte[] bitmapData2 =new byte[length];
InputStream is = conn.getInputStream();
BitmapFactory.Options options = new
BitmapFactory.Options();
options.inSampleSize = 1;
bmImg = BitmapFactory.decodeStream(is,null,options);
}
else
{
}
}
catch(IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
return bmImg;
}

Android imageview only accepts some jpg's

I have an image view in my app. when I try to make it show a jpg file exported from 3ds max, it works. But if it comes from Photoshop, it just does nothing. Why is that? If it is at all important my app gets the image from my server with the following code:
public static Bitmap getWebImage(String URL)
{
URL myImageURL = null;
Bitmap bitmap = null;
try {
myImageURL = new URL(URL);
} catch (MalformedURLException error) {
error.printStackTrace();
}
try {
HttpURLConnection connection = (HttpURLConnection)myImageURL .openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
bitmap = BitmapFactory.decodeStream(input);
} catch (IOException e) {
e.printStackTrace();
}
return bitmap;
}

Can you check the color settings of your JPG files? Most likely your JPG files from photoshop is in CMYK rather than RGB, and Android simply doesn't support CMYK.

Would it be possible for you to upload the two pictures for comparison?

public static Bitmap getWebImage(String URL)
{
URL myImageURL = null;
Bitmap bitmap = null;
try {
myImageURL = new URL(URL);
} catch (MalformedURLException error) {
error.printStackTrace();
}
try {
HttpURLConnection connection = (HttpURLConnection)myImageURL .openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
bitmap = BitmapFactory.decodeStream(input);
} catch (IOException e) {
e.printStackTrace();
}
return bitmap;
}