Android - Custom Dialog

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingLeft="20dp"
        android:paddingRight="20dp"
        android:paddingTop="30dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/terms_tv_sub_title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical"
                android:text="서브타이틀 표시 영역"
                android:textSize="12dp" />

            <RadioGroup
                android:id="@+id/radio_group"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="20dp"
                android:orientation="horizontal"
                android:textSize="12dp"
                android:visibility="visible">

                <RadioButton
                    android:id="@+id/radio_agree"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/radio_agree" />

                <RadioButton
                    android:id="@+id/radio_disagree"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/radio_disagree" />
            </RadioGroup>
        </LinearLayout>

        <TextView
            android:id="@+id/terms_tv_detail_contents"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginTop="30dp"
            android:text="약관 전문 표시 영역"
            android:textSize="12dp" />
    </LinearLayout>
</RelativeLayout>

CustomDialogFragment.java

public class CustomDialogFragment extends DialogFragment implements View.OnClickListener{
    private static final String TAG = "CustomDialogFragment";
    private static final String ARG_DIALOG_MAIN_MSG = "dialog_main_msg";

    private String mMainMsg;

    public static CustomDialogFragment newInstance(String mainMsg) {
        Bundle bundle = new Bundle();
        bundle.putString(ARG_DIALOG_MAIN_MSG, mainMsg);

        CustomDialogFragment fragment = new CustomDialogFragment();
        fragment.setArguments(bundle);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            mMainMsg = getArguments().getString(ARG_DIALOG_MAIN_MSG);
        }
    }


    @Override
    public void onResume() {
        super.onResume();

        int dialogWidth = getResources().getDimensionPixelSize(R.dimen.dialog_fragment_width);
        int dialogHeight = ActionBar.LayoutParams.WRAP_CONTENT;
        getDialog().getWindow().setLayout(dialogWidth, dialogHeight);
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        View view = getActivity().getLayoutInflater().inflate(R.layout.layout_custom_dialog, null);
        ((TextView)view.findViewById(R.id.dialog_confirm_msg)).setText(mMainMsg);
        view.findViewById(R.id.dialog_confirm_btn).setOnClickListener(this);

        builder.setView(view);
        Dialog dialog = builder.create();
        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        dialog.setCanceledOnTouchOutside(false);

        return dialog;
    }
    
/*
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.layout_custom_dialog, container, false);
        ((TextView)view.findViewById(R.id.dialog_confirm_msg)).setText(mMainMsg);
        view.findViewById(R.id.dialog_confirm_btn).setOnClickListener(this);

        Dialog dialog = getDialog();
        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        dialog.setCanceledOnTouchOutside(false);

        return view;
    }
*/

    private void dismissDialog() {
        this.dismiss();
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {
            case R.id.dialog_confirm_btn:
                dismissDialog();
                break;
        }
    }
}

layout_custom_dialog.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/ninepatch_common_box_gray"
    android:padding="20dp">

    <TextView
        android:id="@+id/dialog_confirm_msg"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:gravity="center_horizontal"
        android:textSize="13sp"
        android:textColor="#111111"
        android:textStyle="bold" />

    <Button
        android:id="@+id/dialog_confirm_btn"
        android:layout_width="66dp"
        android:layout_height="wrap_content"
        android:layout_below="@+id/dialog_confirm_msg"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="15dp"
        android:background="@null"
        android:text="확인"
        android:textSize="12dp" />

</RelativeLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {

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

        RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radio_group);
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {
                String agreeOrDisagree = null;

                if (checkedId == R.id.radio_group) {
                    agreeOrDisagree = getString(R.string.radio_agree);
                } else {
                    agreeOrDisagree = getString(R.string.radio_disagree);
                }

                CustomDialogFragment dialog = CustomDialogFragment.newInstance(
                        getString(R.string.custom_dialog_msg, agreeOrDisagree)
                );
                dialog.show(getSupportFragmentManager(), "dialog");
            }
        });
    }
}