How to clear Intent that started Activity?

I had similar problem. This helped me. Maybe you have to also use onSaveInstanceState(Bundle outState) and add extra data to the bundle so inState is not null, not sure.

Intent activityIntent = null; // Subsequent times it's null

@Override 
protected void onCreate(Bundle inState) {
    super.onCreate(inState);
    .
    .
    if (inState!=null) {
        /*Recreating activity with a saved state*/
    } else {
        /*Creating activity*/
        activityIntent = getIntent(); // First time through intent is used
        /*Get your Extra Intent data here. You will be capturing data on 1st creation. */
}

Do not use setIntent(null). It seems that while it may work sometimes, under some conditions the original intent may come back.

Instead, call setIntent() with a simple intent that doesn't have an action, data or extras, such as new Intent(Context, Class).

Indeed, the use of setIntent() was actually not a good API design decision in the first place. Instead, as dcg noted, be sure you only check your intent the first time, when your savedInstanceState is still null.