鑒客 Android 背景圖檔重複 Background repeat

以LinearLayout為例，它提供的background屬性将會将背景圖檔拉伸，相當難看。事實上我們隻需做少量的修改就可以實作web程式設計中css背景圖檔的效果。來試試吧。

A Drawable that wraps a bitmap and can be tiled, stretched, or aligned. You can create a BitmapDrawable from a file path, an input stream, through XML inflation, or from a Bitmap object.

屬性 android:tileMode

Defines the tile mode. When the tile mode is enabled, the bitmap is repeated. Gravity is ignored when the tile mode is enabled.

Constant Value Description

disabled -1 Do not tile the bitmap. This is the default value.

clamp 0 Replicates the edge color.

repeat 1 Repeats the bitmap in both direction.

mirror 2 Repeats the shader’s image horizontally and vertically, alternating mirror images so that adjacent images always seam.

在drawable目錄下建立一個repeat_bg.xml:

<code></code>

然後在布局的xml檔案中可以這樣引用: