App Inventor Button on Dialog crush app

[avichay]

Hi evryone whatsupp so thx for entering my qustion...
i have some activty and it conact to dialog
in this dialog i have some button
everything wroks allright until​

buttonLoad.setOnClickListener(new View.OnClickListener() {
@override
public void onClick(View view) {

Toast.makeText(contant.this, "informition entered secsfuly",Toast.LENGTH_SHORT ).show();

}
});

​

i dont now why its heppening, pls help
and have a nice day

by the way - sorry if my english not so good....​

​

XML Code (dialog):
https://gist.github.com/anonymous/b723ff3b747fcdd613ab4b23bbbcfd8d

Java Code(activity):
https://gist.github.com/anonymous/ab998ad186daa464b44572848ead9a8d

​

 

[wseng92]

Since buttonLoad is actually inflate in dialog_custom, it should be initialized like this way

View mView = getLayoutInflater().inflate(R.layout.dialog_custom, null);
Button buttonLoad = (Button) mView.findViewById(R.id.buttonLoad);

 

[avichay]

Since buttonLoad is actually inflate in dialog_custom, it should be initialized like this way

View mView = getLayoutInflater().inflate(R.layout.dialog_custom, null);
Button buttonLoad = (Button) mView.findViewById(R.id.buttonLoad);

thx very much !

but now i have inther problem from some reson , maybe can u hale me with that too.

java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if(id == R.id.add_contant) {

        final EditText classEdit = (EditText) findViewById(R.id.classEdit);
        final EditText gradeEdit = (EditText) findViewById(R.id.gradeEdit);

        AlertDialog.Builder  mBuilder = new AlertDialog.Builder(contant.this);
        View mView = getLayoutInflater().inflate(R.layout.dialog_custom, null);
        Button buttonLoad = (Button) mView.findViewById(R.id.buttonLoad);

        final int i =Integer.parseInt(gradeEdit.getText().toString());

        buttonLoad.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if (!classEdit.getText().toString().isEmpty() && !gradeEdit.getText().toString().isEmpty() && i<100 && i>0){
                    Toast.makeText(contant.this, "מידע הוכנס בהצלחה",Toast.LENGTH_SHORT ).show();
                }
                else if (classEdit.getText().toString().isEmpty() && gradeEdit.getText().toString().isEmpty()){
                    Toast.makeText(contant.this, "שני התאים ריקיים",Toast.LENGTH_SHORT ).show();
                }
                else if (!classEdit.getText().toString().isEmpty() && gradeEdit.getText().toString().isEmpty()){
                    Toast.makeText(contant.this, "תא השיעור ריק",Toast.LENGTH_SHORT ).show();
                }
                else if (classEdit.getText().toString().isEmpty() && !gradeEdit.getText().toString().isEmpty()){
                    Toast.makeText(contant.this, "תא הציון ריק",Toast.LENGTH_SHORT ).show();
                }
                else if (!classEdit.getText().toString().isEmpty() && !gradeEdit.getText().toString().isEmpty() ){
                    Toast.makeText(contant.this, "תא הציון ריק",Toast.LENGTH_SHORT ).show();
                }
                else {
                    Toast.makeText(contant.this, "שגיאה בהכנסת מידע",Toast.LENGTH_SHORT ).show();
                }
            }
        });



        mBuilder.setView(mView);
        AlertDialog dialog = mBuilder.create();
        dialog.show();

    }
    return super.onOptionsItemSelected(item);
}
[COLOR=rgb(0, 0, 0)]

[/COLOR]
(sorry if u dont understand whats in the toast)

 

[Deleted User]

From the information you've given, I'd say that one or both of these objects is null:

final EditText classEdit = (EditText) findViewById(R.id.classEdit);
final EditText gradeEdit = (EditText) findViewById(R.id.gradeEdit);

Are you using the correct View ids (R.id.classEdit, R.id.gradeEdit) for these EditTexts?

 

[Deleted User]

Also, please show the full stack trace, not just the one line with the exception.

 

[Deleted User]

You may find this helpful

https://androidforums.com/threads/please-read-me-before-posting.987318/

 

[avichay]

From the information you've given, I'd say that one or both of these objects is null:

final EditText classEdit = (EditText) findViewById(R.id.classEdit);
final EditText gradeEdit = (EditText) findViewById(R.id.gradeEdit);

Are you using the correct View ids (R.id.classEdit, R.id.gradeEdit) for these EditTexts?

but they must be final

 

[avichay]

Also, please show the full stack trace, not just the one line with the exception.

package com.avichay;

import android.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class contant extends AppCompatActivity   {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_contant);

    }

    public boolean onCreateOptionsMenu(Menu menu) {

        MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(R.menu.actionbar_menu_contant, menu);
        return super.onCreateOptionsMenu(menu);
    }


    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        if(id == R.id.add_contant) {

            final EditText classEdit = (EditText) findViewById(R.id.classEdit);
            final EditText gradeEdit = (EditText) findViewById(R.id.gradeEdit);

            AlertDialog.Builder  mBuilder = new AlertDialog.Builder(contant.this);
            View mView = getLayoutInflater().inflate(R.layout.dialog_custom, null);


            Button buttonLoad = (Button) mView.findViewById(R.id.buttonLoad);

            //final int i =Integer.parseInt(gradeEdit.getText().toString());


                buttonLoad.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {

                        if (!classEdit.getText().toString().isEmpty() && !gradeEdit.getText().toString().isEmpty() /*&& i < 100 && i > 0*/) {
                            Toast.makeText(contant.this, "מידע הוכנס בהצלחה", Toast.LENGTH_SHORT).show();
                        } else if (classEdit.getText().toString().isEmpty() && gradeEdit.getText().toString().isEmpty()) {
                            Toast.makeText(contant.this, "שני התאים ריקיים", Toast.LENGTH_SHORT).show();
                        } else if (!classEdit.getText().toString().isEmpty() && gradeEdit.getText().toString().isEmpty()) {
                            Toast.makeText(contant.this, "תא השיעור ריק", Toast.LENGTH_SHORT).show();
                        } else if (classEdit.getText().toString().isEmpty() && !gradeEdit.getText().toString().isEmpty()) {
                            Toast.makeText(contant.this, "תא הציון ריק", Toast.LENGTH_SHORT).show();
                        } else if (!classEdit.getText().toString().isEmpty() && !gradeEdit.getText().toString().isEmpty()) {
                            Toast.makeText(contant.this, "תא הציון ריק", Toast.LENGTH_SHORT).show();
                        } else {
                            Toast.makeText(contant.this, "שגיאה בהכנסת מידע", Toast.LENGTH_SHORT).show();
                        }
                    }
                });




            mBuilder.setView(mView);
            AlertDialog dialog = mBuilder.create();
            dialog.show();

        }
        return super.onOptionsItemSelected(item);
    }


}

 

[wseng92]

EditText inflate dialog_custom.xml too.

 final EditText classEdit = (EditText)view.findViewById(R.id.classEdit);
 final EditText  gradeEdit = (EditText)view.findViewById(R.id.gradeEdit);

 

[Deleted User]

but they must be final

That's not going to help you if the View ids return a null object.

 

[avichay]

That's not going to help you if the View ids return a null object.

thx i get it

 

[avichay]

EditText inflate dialog_custom.xml too.

 final EditText classEdit = (EditText)view.findViewById(R.id.classEdit);
 final EditText  gradeEdit = (EditText)view.findViewById(R.id.gradeEdit);

thx