public class AddStudentActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_student);
}
public void add2(View view){
//create 3 editText , 1 Textview
EditText et_name, et_age;
RadioButton rb_male;
TextView tv_msg;
//bind with xml widget
et_name = (EditText)findViewById(R.id.et_name);
et_age = (EditText)findViewById(R.id.et_age);
rb_male = (RadioButton)findViewById(R.id.rb_male);
tv_msg = (TextView)findViewById(R.id.tv_msg);
//retrieve values
String name = et_name.getText().toString();
String age = et_age.getText().toString();
String gender = "";
if (rb_male.isChecked())
gender = "male";
else
gender = "female";
//call php
new AddStudent(this, tv_msg).execute(name, age, gender);
}
}
class AddStudent extends AsyncTask<String, Void, String> {
private Context context;
//CHANGE HERE....ADD PARAMATER
TextView tv_msg;
public AddStudent(Context context,TextView tv_msg) {
this.context = context;
this.tv_msg = tv_msg;
}
@Override
protected String doInBackground(String[] arg) {
//CHANGE HERE ...... RETRIEVE STRING ARGUMENTS
String name = arg[0];
String age = arg[1];
String gender = arg[2];
String link;
String data;
BufferedReader bufferedReader;
String result;
try {
//CHANGE HERE .... PARAMETERS
data = "?name=" + URLEncoder.encode(name, "UTF-8");
data += "&age="+ URLEncoder.encode(age, "UTF-8");
data += "&gender="+ URLEncoder.encode(gender, "UTF-8");
//CHANGE HERE .... PHP PAGE
link = "http://10.0.2.2/fashionstudio/ADD3.php" + data;
URL url = new URL(link);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));
result = bufferedReader.readLine();
return result;
} catch (Exception e) {
Log.d("msg here", e.getMessage());
Toast.makeText(context, "Error Exception", Toast.LENGTH_SHORT).show();
return new String("Exception: " + e.getMessage());
}
}
@Override
protected void onPostExecute(String result) {
if (result != null) {
try {
JSONObject reader = new JSONObject(result);
//CHANGE HERE... RETRIEVE VALUES
String msg = reader.getString("msg");
tv_msg.setText(msg);
} catch (Exception e) {
e.printStackTrace();
Log.d("msg here", e.getMessage());
Toast.makeText(context, "Error parsing JSON data.", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(context, "Couldn't get any JSON data.", Toast.LENGTH_SHORT).show();
}
}
}
i eu une erreur lorsque je clique ajouter étudiant androidImpossible de créer gestionnaire intérieur thread qui n'a pas appelé Looper.prepare() 3
E/AndroidRuntime: FATAL EXCEPTION: AsyncTask # 1 processus: com.example.lenovo.yuwilson, PID: 22199 java.lang.RuntimeException: Une erreur est survenue lors de l'exécution doInBackground() à android.os.AsyncTask 3.done $ (AsyncTask.java:300) à java. util.concurrent.FutureTask.finishCompletion (FutureTask.java:355) at java.util.concurrent.Futur eTask.setException (FutureTask.java:222) at java.util.concurrent.FutureTask.run (FutureTask.java:242) à l'adresse android.os.AsyncTask $ SerialExecutor $ 1.run (AsyncTask.java:231) at java .util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1112) à java.util.concurrent.ThreadPoolExecutor $ Worker.run (ThreadPoolExecutor.java:587) à java.lang.Thread.run (Thread.java:841 Causée par: java.lang.RuntimeException: Impossible de créer un gestionnaire à l'intérieur du thread qui n'a pas appelé Looper.prepare() at android.os.Handler. (Handler.java:208) at android.os.Handler. (Handler.java:122) at android.widget.Toast $ TN. (Toast.java:341) à android.w idget.Toast. (Toast.java:96) à android.widget.Toast.makeText (Toast.java:245) à com.example.lenovo.yuwilson.AddStudent.doInBackground (AddStudentActivity.java:94) à com .example.lenovo.yuwilson.AddStudent.doInBackground (AddStudentActivity.java:54) at android.os.AsyncTask $ 2.call (AsyncTask.java:288) à java.util.concurrent.FutureTask.run (FutureTask.java: 237) à android.os.AsyncTask $ SerialExecutor $ 1.run (AsyncTask.java:231) à java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1112) à java.util.concurrent.ThreadPoolExecutor $ travailleur .run (ThreadPoolExecutor.java:587) at java.lang.Thread.run (Thread.java:841)
Quelqu'un m'aider à résoudre s'il vous plaît?
double possible de [Impossible de créer handler filetage intérieur qui n'a pas appelé Looper.prepare()] (http://stackoverflow.com/questions/3875184/cant-create-handler-inside-thread-that-has-not-called-looper-prepare) –
@Yu Wil Son S'il vous plaît envisager d'accepter l'une des réponses ci-dessous si elle répond à votre demande – Lino