AlertDialog 사용자 정의 레이아웃

private void showAlertDialog() {

final AlertDialogUtil dialog = new AlertDialogUtil(this, false, null); // false      "  "          ，true       
        dialog.setMessage("     ");
        dialog.setBtnPositiveValue("  ");
        dialog.setPositiveClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                dialog.dismiss();
            }
        });
        dialog.setBtnNegativeValue("  ");
        dialog.setNegativeClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                
            }
        });

        dialog.show();

}

public class AlertDialogUtil extends AlertDialog {

    private Button btnPositive, btnNegative;
    private TextView tvMessage;
    
    private String message;
    private String btnPositiveValue, btnNegativeValue;
    private View.OnClickListener positiveListener, negativeListener;

    public AlertDialogUtil(Context context, boolean cancelable,
            OnCancelListener cancelListener) {
        super(context, cancelable, cancelListener);
    }

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

    public void setMessage(String message) {
        this.message = message;
    }

    public void setBtnPositiveValue(String val) {
        this.btnPositiveValue = val;
    }

    public void setPositiveClickListener(View.OnClickListener listener) {
        this.positiveListener = listener;
    }

    public void setBtnNegativeValue(String val) {
        this.btnNegativeValue = val;
    }

    public void setNegativeClickListener(View.OnClickListener listener) {
        this.negativeListener = listener;
    }

    private void initView() { //                 
        btnPositive = (Button) findViewById(R.id.btn_alertDialogutil_cancel);
        btnNegative = (Button) findViewById(R.id.btn_alertDialogutil_confirm);
        tvMessage = (TextView) findViewById(R.id.textView_title_mydialog);
       
        if (isNullEmptyBlank(message)) {
            tvMessage.setVisibility(View.GONE);
        } else {
            this.setCancelable(cancelable);
            tvMessage.setText(message);
        }

        if (!(isNullEmptyBlank(btnPositiveValue))) {
            btnPositive.setText(btnPositiveValue);
            this.btnPositive.setOnClickListener(positiveListener);
        }

        if (!(isNullEmptyBlank(btnNegativeValue))) {
            btnNegative.setText(btnNegativeValue);
            this.btnNegative.setOnClickListener(negativeListener);
        }
       
    }

    private static boolean isNullEmptyBlank(String str) {
        if (str == null || "".equals(str) || "".equals(str.trim()))
            return true;
        return false;
    }

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="260dp"
    android:layout_height="130dp"
    android:layout_gravity="center"
    android:background="@drawable/feedback_edite_bg"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:gravity="center" >

        <TextView
            android:id="@+id/textView_title_mydialog"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="@color/color_black"
            android:textSize="21sp" >
        </TextView>
    </LinearLayout>

    <LinearLayout
        android:id="@+id/ll_alertDialogutil"
        android:layout_width="match_parent"
        android:layout_height="51dp"
        android:orientation="vertical"
        android:visibility="gone" >

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/color_linear" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginLeft="8dp"
            android:layout_marginRight="8dp"
            android:orientation="horizontal" >

            <Button
                android:id="@+id/btn_alertDialogutil_cancel"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@color/color_transparent"
                android:textColor="@color/color_blue"
                android:textSize="15sp"
                android:visibility="gone" />

            <ImageView
                android:id="@+id/iv_alertDialogutil"
                android:layout_width="1dp"
                android:layout_height="match_parent"
                android:background="@color/color_linear"
                android:visibility="gone" />

            <Button
                android:id="@+id/btn_alertDialogutil_confirm"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@color/color_transparent"
                android:textColor="@color/color_blue"
                android:textSize="15sp"
                android:visibility="gone" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>