[android] How to create a Custom Dialog box in android?

It's a class for Alert Dialog so that u can call the class from any activity to reuse the code.

public class MessageOkFragmentDialog extends DialogFragment {
Typeface Lato;
String message = " ";
String title = " ";
int messageID = 0;

public MessageOkFragmentDialog(String message, String title) {
    this.message = message;
    this.title = title;
}


@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {

    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    LayoutInflater inflater = getActivity().getLayoutInflater();

    View convertview = inflater.inflate(R.layout.dialog_message_ok_box, null);


    Constants.overrideFonts(getActivity(), convertview);
    Lato = Typeface
            .createFromAsset(getActivity().getAssets(), "font/Lato-Regular.ttf");


    TextView textmessage = (TextView) convertview
            .findViewById(R.id.textView_dialog);

    TextView textview_dialog_title = (TextView) convertview.findViewById(R.id.textview_dialog_title);

    textmessage.setTypeface(Lato);
    textview_dialog_title.setTypeface(Lato);



    textmessage.setText(message);
    textview_dialog_title.setText(title);



    Button button_ok = (Button) convertview
            .findViewById(R.id.button_dialog);
    button_ok.setTypeface(Lato);

    builder.setView(convertview);
    button_ok.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View arg0) {
            dismiss();

        }
    });


    return builder.create();

}
}

Xml file for the same is:

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:background="#ffffff"
    android:gravity="center_vertical|center"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/blue_color"
            android:gravity="center_horizontal"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/textview_dialog_title"
                android:layout_width="wrap_content"
                android:layout_height="50dp"
                android:gravity="center"
                android:textColor="@color/white_color"
                android:textSize="@dimen/txtSize_Medium" />


        </LinearLayout>

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/txt_white_color" />

        <TextView
            android:id="@+id/textView_dialog"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_margin="@dimen/margin_20"
            android:textColor="@color/txt_gray_color"
            android:textSize="@dimen/txtSize_small" />

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/txt_white_color"
            android:visibility="gone"/>

        <Button
            android:id="@+id/button_dialog"
            android:layout_width="wrap_content"
            android:layout_height="@dimen/margin_40"
            android:layout_gravity="center"
            android:background="@drawable/circular_blue_button"

            android:text="@string/ok"
            android:layout_marginTop="5dp"
            android:layout_marginBottom="@dimen/margin_10"
            android:textColor="@color/txt_white_color"
            android:textSize="@dimen/txtSize_small" />
    </LinearLayout>

</LinearLayout>