Hide dialog title at the startup of an activity

Issue

I have an pop-up dialog, that need to display at the start up of an activity. To start the popup at start up, I have placed it on onStart(). That works fine, but it displaying the blank title on the pop-up dialog. To Removed this, I have tried with dialog.requestWindowFeature(dialog.getWindow().FEATURE_NO_TITLE);
But this getting and runtime exception. below is the OnStart() method:

@Override
    protected void onStart()
    {
        super.onStart();
        final Dialog dialog = new Dialog(this);
        dialog.setContentView(R.layout.popup_layout);
        dialog.requestWindowFeature(dialog.getWindow().FEATURE_NO_TITLE); 

        Button mYes = (Button) dialog.findViewById(R.id.button1);
        Button mNo = (Button) dialog.findViewById(R.id.button2);
        mYes.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getApplicationContext(), "msg1", Toast.LENGTH_LONG).show();
                finish();

            }
        });
        mMoveToWallet.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getApplicationContext(), "msg2", Toast.LENGTH_LONG).show();
                dialog.cancel();

            }
        });

        dialog.show();
    }

Exception: android.util.AndroidRuntimeException: requestFeature must be called before adding to the content. Please help me on this. Thanks' in advance.

Solution

Try this property of dialog

final Dialog dialog = new Dialog(this, android.R.style.Theme_Translucent_NoTitleBar);

Remove this

dialog.requestWindowFeature(dialog.getWindow().FEATURE_NO_TITLE); 

UPDATE

try this style

final Dialog dialog = new Dialog(this, android.R.style.Theme_Translucent_NoTitleBar_Fullscreen);

Update 2:
Add below style to the style.xml and use it on dialog declaration

<style name="NoTitleDialog" parent="android:style/Theme.Dialog">
      <item name="android:windowNoTitle">true</item>
 </style>

This is correctly acceptable as it extends android's Theme.Dialog style.

Answered By - Biraj Zalavadia