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NullPointer with Geocoder/AsyncTask - Android


NullPointer with Geocoder/AsyncTask - Android

By : Amin_Technical92
Date : November 18 2020, 03:49 PM
I hope this helps . May be LocationMain.context=null in MyGeocoderTask as per your code.
So you probably pass context as a Constructor in your MyGeocoderTask like so
code :
private Context mainContxt;

public MyGeocoderTask(Context con){
mainContxt=com;
} 
 Geocoder geocoder = new Geocoder(mainContxt);
 new MyGeocoderTask(your_Activity.this).execute(userLocale); 
 new MyGeocoderTask(getApplicationContext()).execute(userLocale); 


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Android retrieving data from webservice asynctask nullpointer

Android retrieving data from webservice asynctask nullpointer


By : 徐先美
Date : March 29 2020, 07:55 AM
This might help you Here is my code: , When you call:
code :
readWebpage(null);
textView.setText((nodes.isEmpty())?"true":"false");
@Override
protected void onPostExecute(String result) {
    textView.setText((nodes.isEmpty())?"true":"false");
}
Android JSON - AsyncTask DoInBackground NullPointer

Android JSON - AsyncTask DoInBackground NullPointer


By : user232421
Date : March 29 2020, 07:55 AM
I hope this helps you . I'm working on a simple app that will send POST data to a php script, then take the JSON response and put it into a listview. I have the UI things working, and I get a JSON response from the script, but my app crashes and the debug logs show only a fatal error: main, pointing towards only my AsyncTask. Is my JSON just not being parsed correctly? , Possibility One
Step 1 credits @Weibo
code :
    final Spinner numPoke = (Spinner) findViewById(R.id.SpinnerNumPokemon);
    final Spinner dexRegion = (Spinner) findViewById(R.id.SpinnerRegion);
    final Spinner pokeType = (Spinner) findViewById(R.id.SpinnerType);
    final ToggleButton incNFE = (ToggleButton) findViewById(R.id.toggleNFE);
    final ToggleButton incLegendary = (ToggleButton) findViewById(R.id.toggleLegendary);
super.doPostExecute(result) ;
Android NullPointer Exception AsyncTask

Android NullPointer Exception AsyncTask


By : user3511544
Date : March 29 2020, 07:55 AM
wish help you to fix your issue i want to send messages with attached files using asyncTask, my php code is ok .. becausewhen uploading small size files everyting will be ok and when i send messages wihtout attachement everything will be as i want .. but when uploading file with big size (like apk files that are > 6 Mb) i got null pointer exception in this line : (look in onPostExecute) , the problem was in the php code .. here is the correct one
code :
    <?php  
date_default_timezone_set ("Africa/Algiers");
include('connect.php');
$response = array();

if (isset($_REQUEST['Emailm'])&& isset($_REQUEST['Mdp'])&&isset($_REQUEST['type']) && isset($_REQUEST['Emailp'])&&isset($_REQUEST['Msg'])  ) {

    $Emailm = $db->real_escape_string($_REQUEST['Emailm']);  
    $Emailp = $db->real_escape_string($_REQUEST['Emailp']); 
    $Mdp = $db->real_escape_string($_REQUEST['Mdp']);  
    $Msg = $_REQUEST['Msg'];  
    $Mdp = $_REQUEST['Mdp'];  
    $Msg= $db->real_escape_string(htmlentities(urldecode($Msg)));    
    $type= $_REQUEST['type'];
    $target_path1 = "attachement/";   
    if($type=="0"){  //compte patient
    if ($result = $db->query("SELECT * FROM `patient` WHERE `Email_p`='$Emailp' AND `Mdp`='$Mdp'")) {
    $row_cnt = $result->num_rows; 
 }
     }else {  //compte médecin
    if ($result = $db->query("SELECT * FROM `med` WHERE `Email`='$Emailm' AND `Mdp`='$Mdp'")) {
    $row_cnt = $result->num_rows; 
 } 
    }


    $b=false;
    $a=false;

    if ($row_cnt>0) {  
                if($_REQUEST['attacher']=="oui"){       
                $filecount = 0;
                $files = glob($target_path1 . "*");
                if ($files){
                $filecount = count($files); 
                }
                $nomFichier=$filecount.basename( $_FILES['attachement']['name']) . ".a"; 
                $target_path1 = $target_path1 . $nomFichier;
                $nomFichierOrigin=basename( $_FILES['attachement']['name']);
                if(move_uploaded_file($_FILES['attachement']['tmp_name'], $target_path1)) {
                $b=true; } 
                }
                else{
                $nomFichier="";
                $nomFichierOrigin=""; 
                };

                       $h=new DateTime("now") ;
                       $s=$h->format('G:i:s');
                       $s2=$h->format('Y-m-d');
                    if($result = mysqli_query($db,"INSERT INTO `msg`(`cle`, `email_m`, `email_p`, `message`, `attachement`, `type`, `attachementNomOrigin`, `heure`, `date`,`vu`) 
                    VALUES ('','$Emailm','$Emailp','$Msg','$nomFichier','$type','$nomFichierOrigin','$s','$s2','non')"))
                    {$a=true;$dernierId = $db->insert_id;
                     }

                    if($a==true && $b==true && $_REQUEST['attacher']=="oui"){


                     if ($result = $db->query("SELECT * FROM msg WHERE cle='$dernierId'")) {
                     if (mysqli_num_rows($result) > 0) { 
                      $response["Msg"] = array();
                     while ($row = mysqli_fetch_array($result)) {
                    $Msg = array();
                    $Msg["cle"] = intval($row["cle"]);
                    $Msg["heure"] = $row["heure"];
                    $Msg["date"] = $row["date"];
                    $Msg["email_m"] = $row["email_m"]; 
                    $Msg["email_p"] = $row["email_p"]; 
                    $Msg["message"] = $row["message"]; 
                    $Msg["type"] = $row["type"];  
                    $Msg["attachement"] = $row["attachement"]; 
                    $Msg["attachementNomOrigin"] = $row["attachementNomOrigin"]; 
                    array_push($response["Msg"], $Msg);
                     }

                    $response["success"] = 1;
                    $response["message"] = "Succès"; 
                    }}} else 

                    if($a==true && $_REQUEST['attacher']=="non"){ 
                    $response["success"] = 1;
                    $response["message"] = "Succès"; 
                    }else{ 
                    $response["success"] = 0;
                    $response["message"] = "Erreur lors de l'envoi";
                    }


    } else {  
        $response["success"] = 0;
        $response["message"] = "Email ou Mot de passe incorrect";


    }
}else { 

    $response["success"] = 0;
    $response["message"] = "Champs manqués";


} echo json_encode($response);
?>
Android AsyncTask nullpointer exception

Android AsyncTask nullpointer exception


By : sonuk9178
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Hello I am working on a translator application. This app takes string from webview with clipboard.getText().toString(); I would like translate this selected word with yandex api. I created AsyncTask class to take translated word from api. , It seems like translate object is null, Try replacing,
code :
translate.execute(TRANSLATE_URL);
new Translate().execute(TRANSLATE_URL);
AsyncTask GeoCoder sometimes crashes?

AsyncTask GeoCoder sometimes crashes?


By : Bo Huang
Date : March 29 2020, 07:55 AM
will help you From the page Geocoder.getFromLocation
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