android progress bar style

progressbar.xml

<!-- This is the case when you define the style in your style.xml -->
<ProgressBar
    android:id="@+id/background_sync_indicator"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_above="@+id/overlay_info_cache"
    android:layout_marginBottom="-6dp"
    android:indeterminate="true"
    android:visibility="gone" />

<!-- This is the case when you use a custom drawable directly -->
<ProgressBar
    android:id="@+id/reload_indicator"
    style="@android:style/Widget.ProgressBar.Horizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:maxHeight="3dp"
    android:minHeight="3dp"
    android:progressDrawable="@drawable/progressbar_webview"
    android:visibility="gone" />