Android: How to get image from remote server - php

Question

I am developing an Android app that should get an image from remote server. Am using WAMP as my server and PHP as programming language. I know how to get text data using JSON.
Am not using blob to store image.
Images have stored in a folder on server. Url of image is stored in db table.
I tried the following snippet, I got this from net but it is not giving any error and also it is not displaying image
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("http://10.0.2.2/sareesProject/returnSareeTypeImageUrls.php");
response = httpClient.execute(httpPost);
entity = response.getEntity();
if(response.getStatusLine().getStatusCode() == 200)
{
Log.d("Http Response:", response.toString());
if(entity != null)
{
InputStream instream = entity.getContent();
JSONObject jsonObj = new JSONObject(convertStreamToString(instream));
String base64Image = jsonObj.getString("pprs");
Toast.makeText(getBaseContext(), base64Image, Toast.LENGTH_LONG).show();
byte[] rawImage = Base64.decode(base64Image, Base64.DEFAULT);
bmp = BitmapFactory.decodeByteArray(rawImage, 0, rawImage.length);
}
}
ImageView imageview = (ImageView) findViewById(R.id.flag);
imageview.setImageBitmap(bmp);
The following is my php code
<?php
error_reporting( E_ALL ^ E_NOTICE ^ E_WARNING);
$con = mysql_connect("localhost","root","") or die("con error");
mysql_select_db("sareesdb") or die("db select eror");
$query = mysql_query("select * from noofpiecesinatype");
if($row = mysql_fetch_assoc($query))
{
$response = $row['imageUrl'];
}
$response = base64_encode($response);
echo '{"pprs":'.json_encode($response).'}';
mysqli_close($con);
?>
I checked my php code with html(with out encoding $response value) am getting image there, but not in Android.

Answer 1

I am not good with Php, but if you return the file url via a JSON reponse you can use the following code for downloading the file.
int count;
try {
URL url = new URL("http://url of your file");
URLConnection conection = url.openConnection();
conection.connect();
// getting file length
int lenghtOfFile = conection.getContentLength();
// input stream to read file - with 8k buffer
InputStream input = new BufferedInputStream(url.openStream(), 8192);
// Output stream to write file
OutputStream output = new FileOutputStream("/sdcard/downloadedfile.jpg");
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
// publishing the progress....
// After this onProgressUpdate will be called
publishProgress(""+(int)((total*100)/lenghtOfFile));
// writing data to file
output.write(data, 0, count);
}
// flushing output
output.flush();
// closing streams
output.close();
input.close();
} catch (Exception e) {
Log.e("Error: ", e.getMessage());
}
## Edit ##
After the Image is downloaded you can create a Bitmap from the Image Path/InputStream and assign it to the Image View like this
BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
Bitmap bmp = BitmapFactory.decodeStream(bufferedInputStream);
Original source

Answer 2

try {
httpClient = new DefaultHttpClient();
httpPost = new HttpPost("http://10.0.2.2/sareesProject/returnSareeTypeImageUrls.php");
response = httpClient.execute(httpPost);
entity = response.getEntity();
if(response.getStatusLine().getStatusCode() == 200)
{
Log.d("Http Response:", response.toString());
if(entity != null)
{
instream = entity.getContent();
JSONObject jsonObj = new JSONObject(convertStreamToString(instream));
bitmapPath = jsonObj.getString("pprs");
}
}
try {
Toast.makeText(getBaseContext(), "http://10.0.2.2/sareesProject/"+bitmapPath, Toast.LENGTH_SHORT).show();
URL url = new URL("http://10.0.2.2/sareesProject/"+bitmapPath);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
bmp = myBitmap;
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
}
if(bmp == null)
Toast.makeText(getBaseContext(), "null", Toast.LENGTH_SHORT).show();
ImageView imageview = (ImageView) findViewById(R.id.flag);
imageview.setImageBitmap(bmp);
} catch (Exception e) {
// TODO: handle exception
Toast.makeText(getBaseContext(),e.getMessage(), Toast.LENGTH_LONG).show();
}
private static String convertStreamToString(InputStream is) {
/*
* To convert the InputStream to String we use the BufferedReader.readLine()
* method. We iterate until the BufferedReader return null which means
* there's no more data to read. Each line will appended to a StringBuilder
* and returned as String.
*/
//new HomePage().show("in con");
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
//show(line);
//new HomePage().show("in while");
//new HomePage().show("l="+line);
sb.append(line+"\n");
}
} catch (IOException e) {
e.printStackTrace();
//Toast.makeText(, text, duration)
} finally {
try {
if(reader != null)
{
try{reader.close();}
catch(Exception e){e.printStackTrace();}
}
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}//end of convertStreamToString
The following is my php code
<?php
error_reporting( E_ALL ^ E_NOTICE ^ E_WARNING);
$con = mysql_connect("localhost","root","") or die("con error");
mysql_select_db("sareesdb") or die("db select eror");
$query = mysql_query("select * from noofpiecesinatype");
$response = array();
while($row = mysql_fetch_assoc($query))
{
$response[] = $row['imageUrl'];
}
echo json_encode($response);
mysqli_close($con);
?>
//--------------------
Fnally i got it.............
First of all my server file returns the following
{"pprs":"upload/22.png"}
from this i extracted upload/22.png using JSON
Now bitmapPath contains upload/22.png
Thank you very much to insomniac giving suggestions.............
If it is helpful to any one vote for me..............