TextView无法填充宽度？ （安卓）

Question

I have this TextView defined in the XML layout file:

<TextView
        android:id="@+id/time"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:typeface="sans"
        android:textColor="#FFFFFF"
        android:layout_gravity="center_vertical"
        android:gravity="center"
        android:textSize="20sp" />

This TextView should be from end to end of the display, as layout_width="fill_parent" . But this is not the case when I run it on the emulator. This is how it looks:

Why is it( the time) not covering the entire width of the screen?

Answer 1

Textview is the component not a layout , component are set in layout . so most of time components height and width are depends on there parent layout

that property set the text view contain in center , if you want to check the area of the text view just simply set some background color .

Answer 2

这个简单的开放源代码对AutoScale TextView很有帮助： http : AutoScale TextView或研究实现并将其调整为您的应用程序。