AlertDialog.Builder with custom layout and EditText; cannot access view

Question

I am trying to create an alert dialog with an EditText object. I need to set the initial text of the EditText programmatically. Here's what I have.

AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
// ...Irrelevant code for customizing the buttons and title
AlertDialog alertDialog = dialogBuilder.create();
LayoutInflater inflater = this.getLayoutInflater();
alertDialog.setContentView(inflater.inflate(R.layout.alert_label_editor, null));
EditText editText = (EditText) findViewById(R.id.label_field);
editText.setText("test label");
alertDialog.show();

What do I need to change so that I can have a valid EditText object?

[edit]

So, it was pointed out by user370305 and others that I should be using alertDialog.findViewById(R.id.label_field);

Unfortunately there is another issue here. Apparently, setting the content view on the AlertDialog causes the program to crash at runtime. You have to set it on the builder.

AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
// ...Irrelevant code for customizing the buttons and title
dialogBuilder.setView(inflater.inflate(R.layout.alert_label_editor, null));
AlertDialog alertDialog = dialogBuilder.create();
LayoutInflater inflater = this.getLayoutInflater();
EditText editText = (EditText) alertDialog.findViewById(R.id.label_field);
editText.setText("test label");
alertDialog.show();

Unfortunately, when you do this, alertDialog.findViewById(R.id.label_field); now returns null.

[/edit]

user370305 · Accepted Answer · 2019-03-25T09:08:51.990

279

editText is a part of alertDialog layout so Just access editText with reference of alertDialog

EditText editText = (EditText) alertDialog.findViewById(R.id.label_field);

Update:

Because in code line dialogBuilder.setView(inflater.inflate(R.layout.alert_label_editor, null));

inflater is Null.

update your code like below, and try to understand the each code line

AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
// ...Irrelevant code for customizing the buttons and title
LayoutInflater inflater = this.getLayoutInflater();
View dialogView = inflater.inflate(R.layout.alert_label_editor, null);
dialogBuilder.setView(dialogView);

EditText editText = (EditText) dialogView.findViewById(R.id.label_field);
editText.setText("test label");
AlertDialog alertDialog = dialogBuilder.create();
alertDialog.show();

Update 2:

As you are using View object created by Inflater to update UI components else you can directly use setView(int layourResId) method of AlertDialog.Builder class, which is available from API 21 and onwards.

edited Mar 25 '19 at 09:08

answered Mar 26 '14 at 08:49

user370305

108,599
23
164
151

27

U also can do it as: `dialogBuilder.setView(R.layout.dialog_layout);` – SiavA Jun 01 '15 at 11:51
4

@SiavA this method is available only form API 21. – Scaraux Jan 31 '16 at 12:29
I have been trying to display Dialog and it wasn't working in RecyclerView but this one did. – Muneeb Mirza Aug 15 '16 at 11:14
You can use `getLayoutInflater()` when the `inflater` is not defined. – backslashN Jun 08 '17 at 07:53
how to close dialog? – saigopi.me Oct 05 '17 at 07:36
1

@saigopi when you override onClick, there will be arguments (DialogInterface dialog, int id). In this onClick method, just pass dialog.cancel(); – Minkoo Dec 30 '17 at 06:37
@Scaraux import the `android.support.v7.app.AlertDialog.Builder` – Ali Kazi Jan 23 '19 at 00:54

score 31 · Answer 2 · answered Mar 26 '14 at 08:56

Use this one

   AlertDialog.Builder builder = new AlertDialog.Builder(activity);
    // Get the layout inflater
    LayoutInflater inflater = (activity).getLayoutInflater();
    // Inflate and set the layout for the dialog
    // Pass null as the parent view because its going in the
    // dialog layout
    builder.setTitle(title);
    builder.setCancelable(false);
    builder.setIcon(R.drawable.galleryalart);
    builder.setView(inflater.inflate(R.layout.dialogue, null))
    // Add action buttons
            .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int id) {

                    }
                }
            });
    builder.create();
    builder.show();

should be `builder.create().show();` , you can check the `builder.show();` code for more detail — Linh, Jul 17 '18 at 03:19

score 11 · Answer 3 · edited Nov 24 '17 at 18:08

You can write:

AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);

 // ...Irrelevant code for customizing the buttons and title

LayoutInflater inflater = this.getLayoutInflater(); 

View dialogView= inflater.inflate(R.layout.alert_label_editor, null);                    
dialogBuilder.setView(dialogView);

Button button = (Button)dialogView.findViewById(R.id.btnName);

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

         //Commond here......

       }
   });

EditText editText = (EditText)
dialogView.findViewById(R.id.label_field); 

editText.setText("test label"); 

dialogBuilder.create().show();

score 6 · Answer 4 · answered Apr 27 '18 at 07:03

In case any one wants it in Kotlin :

val dialogBuilder = AlertDialog.Builder(this)
// ...Irrelevant code for customizing the buttons and title
val dialogView = layoutInflater.inflate(R.layout.alert_label_editor, null)
dialogBuilder.setView(dialogView)

val editText =  dialogView.findViewById(R.id.label_field)
editText.setText("test label")
val alertDialog = dialogBuilder.create()
alertDialog.show()

Reposted @user370305's answer.

score 2 · Answer 5 · answered Mar 26 '14 at 08:50

2

Change this:

EditText editText = (EditText) findViewById(R.id.label_field);

to this:

EditText editText = (EditText)  v.findViewById(R.id.label_field);

answered Mar 26 '14 at 08:50

Manish Dubey

4,206
8
36
65

score 1 · Answer 6 · answered Mar 26 '14 at 08:50

1

View v=inflater.inflate(R.layout.alert_label_editor, null);
alertDialog.setContentView(v);
EditText editText = (EditText)v.findViewById(R.id.label_field);
editText.setText("test label");
alertDialog.show();

answered Mar 26 '14 at 08:50

Sercan Ozdemir

4,641
3
34
64

score 1 · Answer 7 · answered Nov 21 '17 at 07:26

/**
 * Shows  confirmation dialog about signing in.
 */
private void startAuthDialog() {
    AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
    AlertDialog alertDialog = dialogBuilder.create();
    alertDialog.show();

    alertDialog.getWindow().setLayout(800, 1400);
    LayoutInflater inflater = this.getLayoutInflater();
    View dialogView = inflater.inflate(R.layout.auth_dialog, null);
    alertDialog.getWindow().setContentView(dialogView);
    EditText editText = (EditText) dialogView.findViewById(R.id.label_field);
    editText.setText("test label");
}

score 0 · Answer 8 · answered Oct 01 '22 at 08:02

0

Try making View final

eg:(with custom layout)

final View layout=getLayoutInflater().inflate(R.layout.create_class,null);
builder.setView(layout);

answered Oct 01 '22 at 08:02

ALFAS B

1
1

This question was from 2014. I'm not testing alternative solutions anymore. – Don Subert Dec 19 '22 at 00:10

AlertDialog.Builder with custom layout and EditText; cannot access view

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