Can't create a new custom dialog

Question

I can't create new custom dialog like in most tutorials.

public class MyDialog extends DialogFragment {

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

        return new AlertDialog.Builder(getActivity())
                .setTitle("hi")
                .setMessage("hello")
                .setNeutralButton("ok", null)
                .create();
    }
}

and now I'm trying create a new object:

DialogFragment dialog = new MyDialog();

Android studio show me:

required DialogFragment, found MyDialog

How to fix it ?

https://stackoverflow.com/questions/10579545/dialogfragment-using-alertdialog-with-custom-layout — AskNilesh, Jul 06 '18 at 12:40
I want only that was i wrote, dont have layout, my problem is can't create a new object — androidmanifest, Jul 06 '18 at 12:50
Can you show following line code after this line `DialogFragment dialog = new MyDialog();`? — TaQuangTu, Jul 06 '18 at 13:00

letsCode · Answer 1 · 2018-07-06T12:54:34.417

I use this to create a true custom dialog box.

This requires a layout called alert_dialog_view

AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this);
View alertView = getLayoutInflater().inflate(R.layout.alert_dialog_view, null);

//Set the view
alert.setView(alertView);
//Show alert
final AlertDialog alertDialog = alert.show();
//OPTIONAL Can not close the alert by touching outside.
alertDialog.setCancelable(false);
alertDialog.setCanceledOnTouchOutside(false);
alertDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

To create a standard dialog box, you can do this...

public class DialogFragment extends DialogFragment {
   @Override
   public Dialog onCreateDialog(Bundle savedInstanceState) {
      // Use the Builder class for convenient dialog construction
      AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
      builder.setPositiveButton(R.string.fire, new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int id) {
            toast.makeText(this,"enter a text here",Toast.LENTH_SHORT).show();
         }
      })
      .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
         public void onClick(DialogInterface dialog, int id) {
            finish();
         });
         // Create the AlertDialog object and return it
         return builder.create();
      }
   }
}

if this isnt the answer then you do not want to create a "custom" dialog. — letsCode, Jul 06 '18 at 12:53

TaQuangTu · Answer 2 · 2018-07-06T12:58:19.477

I have tried as follow to create a custom dialog:

Create XML file dialog.xml in folder layout to set layout and views for your dialog layout

In your activity file:

 Dialog dialog = new Dialog(YourActivity.this);
 dialog.setTitle("Your dialog title");
 dialog.setContentView(R.layout.dialog);
 dialog.show();

set on click for the views inside your dialog, example:

 Button btn = dialog.findViewById(R.id.btn_id);
 btn.setOnClickListener(new View.OnClickListener() {
   public void onClick(View view) 
   {
     //Insert your code here
   }
 });

Can't create a new custom dialog

2 Answers2