Difference between support.v7.widgets and android.widgets Toolbar, Fragment

Question

I am creating a new application and will have to deal with ActionBar. I know that I have to extend the AppCompatActivity because the ActionBarActivity is deprecated, however

Answer 1

• Support.V7.widgets and widgets.android both are different libraries.
• support.v7.widgets uses design library.
• toolbar actually not an actionbar we are manually implementing a ActionBar with support library.

• And there are lot more new inbuilt properties are included like observableScrollActivity and More material designs...,

• Why we aren't using default actionbar?

  Because ActionBarActivity is depricated. Comparing old actionbar with our latest sdk actionbar it gives good look.

  .setSupportActionBar(toolbar);

After Setting support to the toolbar gives actionbar properties to the toolbar like we can hide it by getSupportActionBar().hide();