I have this code for send sign in request:
@Override
public void onClick(View arg0) {
switch(arg0.getId()) {
case R.id.signInButton:
new AsyncSignIn().execute();
break;
default:
break;
}
}
private class AsyncSignIn extends AsyncTask<Void, Void, Void> {
protected Void doInBackground(Void...voids) {
try {
String email = eField.getText().toString();
String password = pField.getText().toString();
if(isOnline(getApplicationContext())) {
if(!Requester.signIn(email, password)) {
makeToast("Неверный логин или пароль.");
}
else {
_userEmail = email;
startMainContentActivity();
}
}
else {
makeToast("Нет доступа к интернету.");
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
But application crashes with the exception of NetworkOnMainThread:
01-24 20:04:15.248: E/AndroidRuntime(758): android.os.NetworkOnMainThreadException
In fact at this string where "handle" is an HttpURLConnection object:
DataOutputStream writer = new DataOutputStream(handle.getOutputStream());
I have already tried to use Handler for this, but there was the same result. What's wrong?
Update
This is a function which sends post request to sign in:
protected String sendPost(String _url, String _urlParameters) throws IOException {
URL url = new URL(_url);
HttpURLConnection handle = (HttpURLConnection) url.openConnection();
handle.setRequestMethod("POST");
handle.setRequestProperty("Host", Host);
handle.setRequestProperty("Content-Type", POSTContentType);
handle.setRequestProperty("Content-Length", ""+_urlParameters.getBytes().length);
handle.setRequestProperty("User-Agent", UserAgent);
handle.setRequestProperty("Accept", Accept);
handle.setRequestProperty("Accept-Language", AcceptLang);
handle.setRequestProperty("Connection", Connection);
handle.setUseCaches(false);
handle.setDoOutput(true);
handle.setDoInput(true);
DataOutputStream writer = new DataOutputStream(handle.getOutputStream()); //App crashed string
writer.writeBytes(_urlParameters);
writer.flush();
writer.close();
int responseCode = handle.getResponseCode();
if(responseCode == 200) {
BufferedReader reader = new BufferedReader(new InputStreamReader(handle.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while((inputLine = reader.readLine()) != null) {
response.append(inputLine);
}
return response.toString();
}
else {
return null;
}
}
Permissions from manifest:
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"> </uses-permission>
SignIn
There is no any interesting in it.
public boolean signIn(String _email, String _pass) throws IOException {
String link = signInURL;
String signInData = "email="+_email+"&password="+_pass;
String response = sendPost(link, signInData);
System.out.println(response);
if(response.compareTo("Logged") == 0) {
return true;
}
return false;
}
makeToast
The same with makeToast - nothing interesting.
protected void makeToast(String mess) {
Toast t = Toast.makeText(getApplicationContext(), mess, Toast.LENGTH_SHORT);
t.setGravity(Gravity.CENTER, 0, 0);
t.show();
}