why do the alertdialog crashes my app everytime - android-studio

Question

The problem is alertdialogue box not at all working and it crashes everytime
I checked each and every line with youtube,
but it cant be helped
here's the code:
public void showupdatedialogue(String id , String name){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = getLayoutInflater();
View dialog = inflater.inflate(R.layout.update,null);
builder.setView(dialog);
EditText naame = findViewById(R.id.name);
EditText rollno = findViewById(R.id.roll);
EditText cla = findViewById(R.id.clas);
EditText date = findViewById(R.id.dob);
EditText teacher = findViewById(R.id.teacher);
Button up = findViewById(R.id.update);
builder.setTitle("Updating" + " " + name + " " + "record");
builder.show();
up.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String n = naame.getText().toString();
String r = rollno.getText().toString();
String c = cla.getText().toString();
String d = date.getText().toString();
String t = teacher.getText().toString();
updatestudents(id,n,r,d,c,t);
Toast.makeText(MainActivity.this,"record updated",Toast.LENGTH_LONG).show();
}
});
}```

Answer 1

In the findViewById() you should add dialog.findViewById()
public void showupdatedialogue(String id , String name){
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = getLayoutInflater();
View dialog = inflater.inflate(R.layout.update,null);
builder.setView(dialog);
EditText naame = dialog.findViewById(R.id.name);
EditText rollno = dialog.findViewById(R.id.roll);
EditText cla = dialog.findViewById(R.id.clas);
EditText date = dialog.findViewById(R.id.dob);
EditText teacher = dialog.findViewById(R.id.teacher);
Button up = dialog.findViewById(R.id.update);
builder.setTitle("Updating" + " " + name + " " + "record");
builder.show();
up.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String n = naame.getText().toString();
String r = rollno.getText().toString();
String c = cla.getText().toString();
String d = date.getText().toString();
String t = teacher.getText().toString();
updatestudents(id,n,r,d,c,t);
Toast.makeText(MainActivity.this,"record updated",Toast.LENGTH_LONG).show();
}
});
}