Android toolbar偽タイトルが中央に

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar_top"
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:minHeight="?attr/actionBarSize">
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Toolbar Title"
        android:layout_gravity="center"
        android:id="@+id/toolbar_title" />


</android.support.v7.widget.Toolbar>

This means that you can style the TextView however you would like because it’s just a regular TextView. So in your activity you can access the title like so:

Toolbar toolbarTop = (Toolbar) findViewById(R.id.toolbar_top); TextView mTitle = (TextView) toolbarTop.findViewById(R.id.toolbar_title);

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If anyone else can’t remove the default app name title, do this:
1、Call  setSupportActionBar(yourToolbar)  2、 Call getSupportActionBar().setDisplayShowTitleEnabled(false);`