I am getting android.os.NetworkOnMainThreadException in my Login Activity. Basically I am simply trying to check if the user id and password entered by the user are correct i.e., is the user allowed to sign in or not. I have searched for a solution and know that the exception has got something to do with networking on main thread. But I am using AsyncTask. I am still getting this exception. Here is my LoginActivity.java
public class LoginActivity extends AppCompatActivity {
JSONParser jsonParser = new JSONParser();
// single product url
private static final String url_user_check_login = "##########################/android_connect/db_connect.php";
int success=0;
String id="";
String password="";
private static final String TAG_SUCCESS = "success";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Defining onClickListener for Login Button
Button loginBtn=(Button) findViewById(R.id.login_btn);
loginBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Check credentials
EditText phone=(EditText)findViewById(R.id.phone_txt);
EditText pwd=(EditText)findViewById(R.id.password_txt);
id=phone.getText().toString();
password=pwd.getText().toString();
new CheckUserLogin().execute();
if (success == 1) {
Intent intent=new Intent(getApplicationContext(), RideDetailsActivity.class);
startActivity(intent);
}else{
// product with id not found
}
}
});
}
class CheckUserLogin extends AsyncTask<String, String, String> {
protected String doInBackground(String... params) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
// Check for success tag
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("id", id));
// getting product details by making HTTP request
// Note that product details url will use GET request
JSONObject json = jsonParser.makeHttpRequest(
url_user_check_login, "GET", params);
// check your log for json response
// Log.d("Single Product Details", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
} catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
}
}
I don't know if this is important but I tried debugging and put break points inside the doInBackground method but my debugger just ignores the break points and it just blows past the new CheckUserLogin().execute(); statement.
Also here is my exception stack trace.
FATAL EXCEPTION: main
android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1128)
at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
at java.net.InetAddress.getAllByName(InetAddress.java:214)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:365)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:587)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:511)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:489)
at com.heycabs.heycabs.JSONParser.makeHttpRequest(JSONParser.java:65)
at com.heycabs.heycabs.LoginActivity$CheckUserLogin$1.run(LoginActivity.java:98)at android.os.Handler.handleCallback(Handler.java:800)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5409)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:606)
at dalvik.system.NativeStart.main(Native Method)
