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Ketika saya mengklik tombol untuk menyimpan informasi pengguna, aplikasi ditutup begitu saja dan saya tidak dapat mengakses database untuk melihat apakah info tersebut disimpan atau tidak karena itu. Ketika saya mengomentari bagian “verifyUser(mail)”, saya hanya mendapat roti panggang sebagai jawaban tetapi aplikasinya juga ditutup. Saya benar-benar tidak tahu apa bugnya.
ini kode saya
package be.heh.projet_inventaire import android.content.AsyncQueryHandler import android.content.Intent import android.os.AsyncTask import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.text.Editable import android.text.TextWatcher import android.util.Patterns import android.view.View import android.widget.Toast import androidx.activity.viewModels import be.heh.projet_inventaire.bd.MyDB import be.heh.projet_inventaire.bd.User import be.heh.projet_inventaire.bd.UserRecord import kotlinx.android.synthetic.main.activity_main.bt_Inscription_Connexion import kotlinx.android.synthetic.main.activity_main.bt_Inscription_main import kotlinx.android.synthetic.main.activity_main.et_email import kotlinx.android.synthetic.main.activity_main.et_pwd import kotlinx.android.synthetic.main.activity_main.* import java.lang.Exception class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { AsyncTask.execute {MyDB.getDatabase(this).userDao()} val viewModel: UserViewModel by viewModels() super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) et_email.addTextChangedListener(object : TextWatcher{ override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) { } override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) { } override fun afterTextChanged(s: Editable?) { mailValidator(s.toString()) } }) et_pwd.addTextChangedListener(object : TextWatcher{ override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) { } override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) { } override fun afterTextChanged(s: Editable?) { PwdValidator(s.toString()) } }) } fun xmlClickEvent(v: View) { when(v.id){ bt_Inscription_main.id -> addUser() bt_Inscription_Connexion.id -> versConnexion() } } private fun validMail(email: String): Boolean { val emailPattern = Patterns.EMAIL_ADDRESS return emailPattern.matcher(email).matches() } private fun mailValidator(email: String): Boolean { if (validMail(email)) { tvEmailError.visibility = View.GONE return true } else { tvEmailError.text = "Adresse e-mail non valide" tvEmailError.visibility = View.VISIBLE return false } } private fun PwdValidator(password: String): Boolean { if (password.length >= 4) { tvPwdError.visibility = View.GONE// //tilPwd.error = null return true } else { //tilPwd.error = "Le mot de passe doit contenir au moins 4 caractères" tvPwdError.text = "Le mot de passe doit contenir au moins 4 caractères" tvPwdError.visibility = View.VISIBLE return false } } fun verifyUser(email: String) : Boolean{ var user = UserRecord (0,"","","") AsyncTask.execute { user = MyDB.getDatabase(this).userDao().get(email) } if (user == null){return true} else(return false) } fun addUser(){ try { val mail = et_email.text.toString() val pwd = et_pwd.text.toString() if(mailValidator(mail) && PwdValidator(pwd)){ if(verifyUser(mail)) { val u = User( 0, mail, pwd ) var role = "" AsyncTask.execute{ val db = MyDB.getDatabase(this) val dao = db.userDao() val liste = dao.get() if (liste.isEmpty()) { role = "S_U" } else { role = "basic" } val u1 = UserRecord(0, u.email, u.pwd, role) dao.insertUser(u1) } Toast.makeText(this, "user créé", Toast.LENGTH_LONG).show(); } else{ tvEmailError.text = "Cet utilisateur existe déjà" tvEmailError.visibility = View.VISIBLE } } else{ tvEmailError.text = "Entrez une adresse mail valide" tvEmailError.visibility = View.VISIBLE tvPwdError.text = "Le mot de passe doit contenir au moins 4 caractères" tvPwdError.visibility = View.VISIBLE } } catch (e:Exception){ e.printStackTrace() } } fun versConnexion(){ val connexion = Intent(this,ConnexionActivity::class.java) startActivity(connexion) } }
Apa yang saya coba:
Saya mencoba banyak hal tetapi saya bahkan tidak tahu mengapa tidak berhasil jadi agak acak
Solusi 1
Tanpa pesan kesalahan yang dicetak ke jendela konsol dengan metode e.printStackTrace di blok try/catch Anda, mustahil bagi siapa pun untuk memberi tahu Anda apa yang salah.
Solusi 2
Log :
KeyboardViewController.show():438 Requesting to show sub view with id 2131428318(key_pos_password_header_numbers) which doesn't exist in current keyboard view jyl at klb.a(PG:195) at bty.a(PG:4) at com.google.android.apps.inputmethod.latin.keyboard.LatinPasswordKeyboard.a(PG:19) at kfh.a(PG:15) at kev.a(PG:31) at kev.H(PG:26) at kez.d(PG:10) at kez.b(PG:108) at com.android.inputmethod.latin.LatinIME.b(PG:339) at dwq.onStartInputView(PG:786) at android.inputmethodservice.InputMethodService.doStartInput(InputMethodService.java:2339) at android.inputmethodservice.InputMethodService$InputMethodImpl.startInput(InputMethodService.java:620) at android.inputmethodservice.InputMethodService$InputMethodImpl.dispatchStartInputWithToken(InputMethodService.java:649) at android.inputmethodservice.IInputMethodWrapper.executeMessage(IInputMethodWrapper.java:199) at com.android.internal.os.HandlerCaller$MyHandler.handleMessage(HandlerCaller.java:44) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:223) at android.app.ActivityThread.main(ActivityThread.java:7656) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
FATAL EXCEPTION: AsyncTask #2
Process: be.heh.projet_inventaire, PID: 12811
java.lang.NullPointerException: Can't toast on a thread that has not called Looper.prepare()
at com.android.internal.util.Preconditions.checkNotNull(Preconditions.java:157)
at android.widget.Toast.getLooper(Toast.java:179)
at android.widget.Toast.<init>(Toast.java:164)
at android.widget.Toast.makeText(Toast.java:492)
at android.widget.Toast.makeText(Toast.java:480)
at be.heh.projet_inventaire.MainActivity.addUser$lambda-2(MainActivity.kt:127)
at be.heh.projet_inventaire.MainActivity.$r8$lambda$BkrwyiTzOFeXUe8qS3noNnSP7sk(Unknown Source:0)
at be.heh.projet_inventaire.MainActivity$$ExternalSyntheticLambda1.run(Unknown Source:6)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
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