Not Able To Load Image From Server In Android

Here I am trying to download a image from server. But it is always throwing Exception. Can any One tell me Why it is Happening and what will be the Correct way? public static St

Solution 1:

Please try this functions get bitmap and download the bitmap

Bitmapbitmap= getBitmapfromUrl(imageurl);
imageview.setImageBitmap(bitmap);

SaveImage(bitmap);

public Bitmap getBitmapfromUrl(String imageUrl) {
    try {
        URLurl=newURL(imageUrl);
        HttpURLConnectionconnection= (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStreaminput= connection.getInputStream();
        Bitmapbitmap= BitmapFactory.decodeStream(input);
        return bitmap;

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        returnnull;

    }
}

privatevoidSaveImage(Bitmap finalBitmap) {

    Stringroot= Environment.getExternalStorageDirectory().toString();
    FilemyDir=newFile(root + "/saved_images");
    myDir.mkdirs();
    Randomgenerator=newRandom();
    intn=10000;
    n = generator.nextInt(n);
    Stringfname="Image-" + n;
    Filefile=newFile(myDir, fname);
    if (file.exists()) file.delete();
    try {
        FileOutputStreamout=newFileOutputStream(file);
        finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
        out.flush();
        out.close();

    } catch (Exception e) {
        e.printStackTrace();
    }
}

And Add this permision in your manifest file

Solution 2:

Call this function from your activity and get inputStream. After getting inputStream (Bitmap bitmap = Bitmap.decodeStream(inputStream));

private InputStream OpenHttpConnection(String urlString)throws IOException
    {
    InputStreamin=null;
    intresponse= -1;

    URLurl=newURL(urlString);
    URLConnectionconn= url.openConnection();

    if (!(conn instanceof HttpURLConnection)) thrownewIOException("Not an HTTP connection");

    try{
    HttpURLConnectionhttpConn= (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)
    {
    thrownewIOException("Error connecting");
    }
    return in;
    }

Solution 3:

Try using Glide or Picasso image processing library.

1. here is Glide demo

Glide.with(this).load(YourImageURL)
                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
                 .into(Imageview);

and add this dependency in gradle.

compile'com.github.bumptech.glide:glide:3.7.0'

you can also set placeholder while image loading. its like alt attribute in html

Glide.with(this).load(YourImageURL)
                    .diskCacheStrategy(DiskCacheStrategy.SOURCE)
                    .placeholder(R.drawable.backimage)
                    .into(Imageview);

2. Here is Picasso demo

   Picasso.with(context).load(url).placeholder(R.drawable.user_placeholder)
        .error(R.drawable.user_placeholder_error)
        .into(imageView);

and add this dependency:

compile'com.squareup.picasso:picasso:2.5.2'

these lib also provide cache feature so you don't need to load second time.