Android DialogFragment Example

activity_main.xml

MainActivity.java

import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements PopupModelFragment.DialogListener{

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


    public void openDialog(View v) {
        FragmentManager fm = getSupportFragmentManager();
        PopupModelFragment popupModelFragment = PopupModelFragment.newInstance("Hello!", "How are you!");
        popupModelFragment.show(fm, "popup_model_fragment");
        popupModelFragment.setDialogListener(this);
    }


    @Override
    public void onConfirm() {
        Toast.makeText(this, "Message Read!", Toast.LENGTH_SHORT).show();
    }
}

fragment_popup_dialog.xml

PopupModelFragment.java

import android.app.Dialog;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.DialogFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.TextView;

public class PopupModelFragment extends DialogFragment {
    public static final String TITLE = "dialog_title";
    public static final String MESSAGE = "dialog_message";

    private DialogListener dialogListener;
    private TextView tvTitle, tvMessage, tvConfirm;

    public PopupModelFragment() {
    }

    public static PopupModelFragment newInstance(String title, String message) {
        PopupModelFragment frag = new PopupModelFragment();
        Bundle args = new Bundle();
        args.putString(TITLE, title);
        args.putString(MESSAGE, message);
        frag.setArguments(args);
        return frag;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_popup_dialog, container);
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        tvTitle = (TextView) view.findViewById(R.id.tv_title);
        tvMessage = (TextView) view.findViewById(R.id.tv_message);
        tvConfirm = (TextView) view.findViewById(R.id.tv_confirm);


        String title = getArguments().getString(TITLE, "");
        String message = getArguments().getString(MESSAGE, "");

        if (title.isEmpty()) {
            tvTitle.setVisibility(View.GONE);
        } else {
            tvTitle.setText(title);
        }

        if (message.isEmpty()) {
            dismiss();
            return;
        }

        tvMessage.setText(message);

        tvConfirm.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                dismiss();
                if (dialogListener != null) {
                    dialogListener.onConfirm();
                }
            }
        });
    }

    @Override
    public void onStart() {
        super.onStart();
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = super.onCreateDialog(savedInstanceState);
        dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        return dialog;
    }

    public void setDialogListener(DialogListener listener) {
        this.dialogListener = listener;
    }

    public interface DialogListener {
        void onConfirm();
    }
}

Complete example in Github