Develop Reference

Download Image from web

I have images on server named by email so when i try to download them on my application the # symbol not shown on the path, is there anyway to stop escape this symbol ?
Example :
Correct Path
Http://www.xxxxx.com/a#a.com.jpg
Wrong Path
Http://www.xxxxx.com/aa.com.jpg
I tried URL encode but its not useful in my case
Bitmap downloadFile(String fileUrl) {
URL myFileUrl = null;
Bitmap bmImg = null;
try {
myFileUrl = new URL(fileUrl);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
HttpURLConnection conn = (HttpURLConnection) myFileUrl
.openConnection();
conn.setDoInput(true);
conn.connect();
InputStream is = conn.getInputStream();
bmImg = BitmapFactory.decodeStream(is);
// imView.setImageBitmap(bmImg);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return bmImg;
}

Try using the URLEncoder from Android SDK.
try {
myFileUrl = new URL(java.net.URLEncoder.encode(fileUrl));
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
EDIT:
Just saw my mistake. That won't work because it's encoding the entire URL.
You have to separate the email address from the rest of the url like this.
myFileUrl = new URL("http://www.xxxx.com/"+java.net.URLEncoder.encode(email));
Or alternatively, just replace the problem character.
myFileUrl = new URL(fileUrl.replace("#","%40"));

Image not showing on image view

I am trying to set image on imageview but image is not show.
I am reading image url from json data and then trying to set it on ImageView but my image is not visible. No any exception occur.
Here is my code
HotelList.class
static final String TAG_DISHIMAGEURL = "dishimageurl";
......
String imageUrl = dishResult.getString(TAG_DISHIMAGEURL);
map.put(TAG_DISHIMAGEURL, imageUrl);
.....
dishimageurl1 = hm.get(TAG_DISHIMAGEURL).toString();
intent.putExtra("background", dishimageurl1);
HotelDetails.class
......
String dishimageurl = bundle.getString("background");
Bitmap bimage= getBitmapFromURL(dishimageurl);
imageView.setImageBitmap(bimage);
....
public Bitmap getBitmapFromURL(String src) {
try {
URL url = new URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
Toast.makeText(this, "showing image", Toast.LENGTH_LONG).show();
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
} catch (IOException e) {
Toast.makeText(this, "showing exception", Toast.LENGTH_LONG).show();
return null;
}
}
I don't understand what happen with this code. No any exception but my image is not visible.
Please give me any reference.

Please Use below code for get image from url and display into imageview.
public class image extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Bitmap bitmap = DownloadImage("http://www.gophoto.it/view.php?i=http://1.bp.blogspot.com/-2LTvCCufBKc/T3L3KgcTj2I/AAAAAAAABbQ/Ki60e1LU9sE/s1600/Sachin%2BTendulkar.png");
RelativeLayout mRlayout1 = (RelativeLayout) findViewById(R.id.mRlayout1);
Drawable d=new BitmapDrawable(bitmap);
mRlayoutLogin.setBackgroundDrawable(d);
}
private InputStream OpenHttpConnection(String urlString) throws IOException {
InputStream in = null;
int response = -1;
URL url = new URL(urlString);
URLConnection conn = url.openConnection();
if (!(conn instanceof HttpURLConnection))
throw new IOException("Not an HTTP connection");
try {
HttpURLConnection httpConn = (HttpURLConnection) conn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.connect();
response = httpConn.getResponseCode();
if (response == HttpURLConnection.HTTP_OK) {
in = httpConn.getInputStream();
}
} catch (Exception ex) {
throw new IOException("Error connecting");
}
return in;
}
private Bitmap DownloadImage(String URL) {
Bitmap bitmap = null;
InputStream in = null;
try {
in = OpenHttpConnection(URL);
bitmap = BitmapFactory.decodeStream(in);
in.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return bitmap;
}
}

you can view image by using this code.
try {
bitmap = BitmapFactory.decodeStream((InputStream)new URL(url).getContent());
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

It seems you are downloading the image from UI thread. this will block the UI thread and will give you not responding error. as an easy way, you can use a library like Universal Image Loader
Universal Image Loader - GitHub
this will manage the image loading for you and avoid problems like incorrect urls, Out Of Memory error.

HttpURLConnection works on emulator but not on the device

I'm trying to experiment the HttpURLConnection to get some XML from a server.
This is the code I'm using:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String myConn = this.getString(R.string.myConnection);
HttpURLConnection httpConnection = null;
InputStream in = null;
try {
URL mySite = new URL(myConn);
URLConnection connection = mySite.openConnection();
TextView tv = (TextView)this.findViewById(R.id.myTextView);
httpConnection = (HttpURLConnection)connection;
in = httpConnection.getInputStream();
String myString = convertStreamToString(in);
tv.setText(myString);
} catch (IOException ex) {} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally {
httpConnection.disconnect();
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
On the emulator this code works and i can see the stream on the TextView...
On my device I can't see anything (3g connection)..
Did I miss something?
thanks

By using AsyncTask You can solve this problem.

how to parse the image which is in very big size?

i am using json parsing in my url a very big size images are there and i want get those images but not downloaded .....can any body help me to get those images
my code is as followsenter code here
public class Image extends Activity{
String imageBaseDirectory = "http://www.dha.com.tr/newpics/news/";
Bitmap bit;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.image);
ImageView img=(ImageView)findViewById(R.id.ImageView01);
img.setImageBitmap(convertImage(imageBaseDirectory));
}
public Bitmap convertImage(String s)
{
URL aURL = null;
try
{
final String imageUrl =s.replaceAll(" ","%20");
Log.e("Image Url",imageUrl);
aURL = new URL(imageUrl);
URLConnection conn = aURL.openConnection();
InputStream is = conn.getInputStream();
//#SuppressWarnings("unused")
BufferedInputStream bis = new BufferedInputStream(is);
Bitmap bm = BitmapFactory.decodeStream(new PatchInputStream(bis));
if(bm==null){}
else
bit=Bitmap.createScaledBitmap(bm,60, 60, true);
return bit;
}
catch(Exception e)
{
e.printStackTrace();
return null;
}
}

Try this code I hope it will help.
private Bitmap LoadPhotoFromServer(String path){
Bitmap bm=null;
URL url = null;
try {
url = new URL(path);
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try{
HttpURLConnection httpConnection=(HttpURLConnection)url.openConnection();
httpConnection.setDoInput(true);
httpConnection.connect();
//int lengthOfFile=httpConnection.getContentLength();
InputStream inputStream=httpConnection.getInputStream();
bm=BitmapFactory.decodeStream(inputStream);
}
catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return bm;
}

android - save image from web server and set it as wallpaper

Can anyone please provide me some idea/guidance on how to save an image from a webserver and set it as wallpaper? i am developing an android application which needs to do that and i am new in android. Thanks a lot.
I had tried writing my own code but it doesn't work as i can't find my images after download but the wallpaper has change to the downloaded picture. here is my existing code.
Bitmap bmImg;
void downloadFile(String fileUrl) {
URL myFileUrl = null;
try {
myFileUrl = new URL(fileUrl);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
HttpURLConnection conn = (HttpURLConnection) myFileUrl
.openConnection();
conn.setDoInput(true);
conn.connect();
int length = conn.getContentLength();
InputStream is = conn.getInputStream();
bmImg = BitmapFactory.decodeStream(is);
// this.imView.setImageBitmap(bmImg);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
String filepath=Environment.getExternalStorageDirectory().getAbsolutePath();
FileOutputStream fos = new FileOutputStream(filepath + "/" + "output.jpg");
bmImg.compress(CompressFormat.JPEG, 75, fos);
fos.flush();
fos.close();
Context context = this.getBaseContext();
context.setWallpaper(bmImg);
} catch (Exception e) {
//Log.e("MyLog", e.toString());
TextView tv = (TextView) findViewById(R.id.txt_name);
tv.setText(e.toString());
}
}

I had tried writing my own code but it
doesn't work as i can't find my images
after download. here is my existing
code.
Your code would save the image in the data/data/<your_app_package_name> folder of the phone. You can then use either a WallpaperManager instance or do a context.setWallpaper(bitmap)(this is deprecated) to set your bitmap as the wallpaper.