CODEWITHSUNDEEP
javaandroidandroid-studiodialog
nwpL
nwpL

Reputation: 39

How to let your App display a dialog (AndroidStudio)?

My activity should show a dialog when launched.

This is my java class "PrivacyDialog":

public class PrivacyDialog extends AppCompatDialogFragment {
    @NonNull
    @Override
    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle("Information")
                .setMessage("test")
                .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

            }
        });

       return builder.create();

    }
}

This is the function which opens the dialog in my activity.

 public void openDialog () {


        PrivacyDialog privacyDialog = new PrivacyDialog();
        privacyDialog.show(getSupportFragmentManager(),"PrivacyDialog");

    }

My Problem:

The App crashes every time it executes the openDialog function.

Upvotes: 0

Views: 48

Answers (1)

Adnan
Adnan

Reputation: 8190

You creating alert dialog inside the custom dialog, that is wrong. You should provide custom layout inside inflater.

class MyCustomDialogFragment : DialogFragment() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
    }

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {

        // Do all the stuff to initialize your custom view
        return inflater.inflate(R.layout.dialog_fragment, container, false)
    }
}

Dismiss

dialogFragment.dismiss();

PS: Since DialogFragment is an actual fragment you will only need to create a fragment transaction and call the show method of

    val dialog: MyCustomDialogFragment = MyCustomDialogFragment()
    val fm: FragmentManager = supportFragmentManager
    dialog.show(fm, "fragment_dialog")

Xml layout

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

Upvotes: 2

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