CODEWITHSUNDEEP
androidkotlinandroid-dialogfragment
Akshdeep Singh
Akshdeep Singh

Reputation: 1457

How to pass arguments to dialog in android?

I am calling a dialog with arguments as follows:

MyDialog("title", "message").show([email protected], null)

And this is my dialog class:

class MyDialog(private val theTitle: String, private val theMessage: String) : DialogFragment() {
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return activity.let {
            val myBuilder = AlertDialog.Builder(it)
            myBuilder
                .setTitle(theTitle)
                .setMessage(theMessage)
                .setPositiveButton("OK") { _, _ -> }
            myBuilder.create()
        }
    }
}

But when the orientation of device changes on rotation, the app stops working. That doesn't happen if no arguments are passed. So, how to pass arguments and what is the best way to do so?

Upvotes: 5

Views: 7050

Answers (4)

Jude Osbert K
Jude Osbert K

Reputation: 1048

If its a fragment, then there should be always a default constructor available. Passing arguments separate will ensure that the arguments are preserved across state changes of the fragment
So there is a method setArgument(Bundle) in which you can pass your parameters. So here your call should be rewritten as 

class MyDialog: DialogFragment() {
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return activity.let {
             val arg = arguments
            // Use the parameters by accessing the key from variable "arg"
            val myBuilder = AlertDialog.Builder(it)
            myBuilder
                .setTitle(theTitle)
                .setMessage(theMessage)
                .setPositiveButton("OK") { _, _ -> }
            myBuilder.create()
        }
    }
}

You call you Dialog like this:

val d = MyDialog()
val b = Bundle()
b.putInt("KEY1",1)
d.arguments = b
d.show(FragmentManager,Tag)

For any fragment always remember to use arguments to pass data

Upvotes: 8

Abner Escócio
Abner Escócio

Reputation: 2785

Full solution using kotlin

Step 1. Create your class like follow

class MyDialog : DialogFragment() {

    private var title: String? = null
    private var message: String? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            title = it.getString(ARG_TITLE)
            message = it.getString(ARG_MESSAGE)
        }
    }

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return activity.let {
            val myBuilder = AlertDialog.Builder(it)
                myBuilder
                    .setTitle(title)
                    .setMessage(message)
                    .setPositiveButton("OK") { _, _ -> }
            myBuilder.create()
        }
    }

    companion object {
        const val TAG = "myDialog"
        private const val ARG_TITLE = "argTitle"
        private const val ARG_MESSAGE = "argMessage"

        fun newInstance(title: String, message: String) = MyDialog().apply {
            arguments = Bundle().apply {
                putString(ARG_TITLE, title)
                putString(ARG_MESSAGE, message)
            }
        }
    }
}

Step 2. Create the instance and show it

MyDialog.newInstance("title", "message").show([email protected], MyDialog.TAG)

It's all!

Upvotes: 7

deadfish
deadfish

Reputation: 12304

The reason why you should be passing parameters through bundle is because when the system restores a fragment (e.g on config change), it will automatically restore your bundle.

Source: https://stackoverflow.com/a/16042750/619673

Instead of creating DialogFragment - You should instantiate by invoking static method from it's class:

public static MyDialog newInstance(String param1) {
    MyDialog d = new MyDialog ();

    Bundle args = new Bundle();
    args.putString("param1", param1);
    d.setArguments(args);

    return d;
}

And when You want to show it, You call:

MyDialog dialog = MyDialog .newInstance("lorem ipsum");
dialog.show(fm, "fragment_confirm_dialog");

Source: https://stackoverflow.com/a/15463986/619673

Upvotes: 1

Hitesh Kushwah
Hitesh Kushwah

Reputation: 1361

Try this code and pass any data as argument, as i passed a message...

    private void confirmdialog(String msg_str) {

    final Dialog dialog = new Dialog(this);
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    dialog.setCancelable(false);
    dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
    LayoutInflater li = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v1 = li.inflate(R.layout.dialog_forsurity, null, false);
    dialog.setContentView(v1);
    dialog.setCancelable(true);


    TextView msg = (TextView) v1.findViewById(R.id.msg);
    msg.setText(msg_str);

    Button btn_submit = (Button) v1.findViewById(R.id.btn_submit);


    btn_submit.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            dialog.dismiss();

            Intent intent = new Intent(SellNumberPlateActivity.this, HomeActivity.class);
            startActivity(intent);
            finishAffinity();

        }
    });

    dialog.show();
    Window window = dialog.getWindow();
    window.setLayout(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

}

Here R.layout.dialog_forsurity is a design of your dialog...

Upvotes: 1

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