My android app does not retieve json data from my web site but retrieve the same data from other sites

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I am try to create app the post data to my web site and retrieve the result first I try my android code by retrieve json data from http://services.hanselandpetal.com/feeds/flowers.json and it is work fine

but the problem that I tried to retrieve the same data from my web site using the same android app. and the same problem that I try to retrieve these data

/* Output header */

$data = array("result" => 0, "message" => "Error!");
header('Content-type: application/json');
echo json_encode($data);
?> please Help me and thanks so much for every one.

What I have tried:

I have retrieved the same data from other site and it is work fine
but my site did not work

Posted 28-Feb-16 5:08am

Member 11536190

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Richard MacCutchan 28-Feb-16 11:26am

What does "but my site did not work" mean? What message is returned from your site?

Member 11536190 28-Feb-16 11:30am

thanks bro for response
I display the result by
@Override
protected void onPostExecute(String result) {

Toast.makeText(getBaseContext(),result,Toast.LENGTH_LONG).show(); }
my site show null message

Richard MacCutchan 28-Feb-16 11:39am

That does not help much. I suggest you use your debugger to find out exactly what data is being returned from your website. Silly question: are you sure your website is returning the json data? Easy to check by typing the URL in your browser.

Member 11536190 28-Feb-16 11:45am

yes I am sure that my web site return json data
http://strontaxi.com/webServices/presentation/json.json

Richard MacCutchan 28-Feb-16 12:07pm

Then my previous comment stands. You need to use your debugger to find out why your Android code is failing.

Member 11536190 28-Feb-16 13:54pm

public static String getData(RequestPackage request) {

BufferedReader reader = null;
// set the uri , method of request and params to be sent
String uri=request.getUri();

try {
URL url = new URL(uri);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod(request.getMethod());

if(request.getMethod().equals("POST")){
con.setDoOutput(true);
OutputStreamWriter writer=new OutputStreamWriter(con.getOutputStream());
writer.write(request.getEncodedParams());
writer.flush();
}
else return "no post method ";

StringBuilder sb = new StringBuilder();
reader = new BufferedReader(new InputStreamReader(con.getInputStream()));

String line;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}

return sb.toString();

} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}

}

the debugger show that reader=null

Richard MacCutchan 29-Feb-16 3:23am

That means that the line
reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
did not create a reader.

Member 11536190 29-Feb-16 4:24am

so what is the problem prevent reader from creating
and why this problem just on my website and other not appear

Richard MacCutchan 29-Feb-16 4:32am

I have no idea, as I cannot run your code. The only way to discover what is happening is by using your debugger to examine things at each step in the program. I can only assume from the statement above that con.getInputStream() is failing for some reason.

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