這一類的shape定義在xml中
- 元素:
-
-
<shape>
-
The shape drawable. This must be the root element.
attributes:
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xmlns:android
-
String. Required. Defines the XML namespace, which must be
"http://schemas.android.com/apk/res/android"
. -
android:shape
-
Keyword. Defines the type of shape. Valid values are:(定義這個類型的形狀,變量值是:)
Value Desciption "rectangle"
A rectangle (長方形)that fills the containing View. This is the default shape.(這個是默認的形狀) "oval"
An oval (橢圓形)shape that fits the dimensions of the containing View. "line"
A horizontalline that spans the width of the containing View. This shape requires the <stroke>
element to define the width of the line."ring"
A ring shape.
The following attributes are used only when
android:shape="ring"
:-
android:innerRadius
- Dimension. The radius for the inner part of the ring (the hole in the middle), as a dimension value or dimension resource.
-
android:innerRadiusRatio
-
Float. The radius for the inner part of the ring, expressed as a ratio of the ring's width. For instance, if
android:innerRadiusRatio="5"
, then the inner radius equals the ring's width divided by 5. This value is overridden byandroid:innerRadius
. Default value is 9. -
android:thickness
- Dimension. The thickness of the ring, as a dimension value or dimension resource.
-
android:thicknessRatio
-
Float. The thickness of the ring, expressed as a ratio of the ring's width. For instance, if
android:thicknessRatio="2"
, then the thickness equals the ring's width divided by 2. This value is overridden byandroid:innerRadius
. Default value is 3. -
android:useLevel
-
Boolean. "true" if this is used as a
LevelListDrawable
. This should normally be "false" or your shape may not appear.
-
-
<corners>
-
Creates rounded corners for the shape. Applies only when the shape is a rectangle.創建圓角的形狀。僅適用於當其形狀是一個長方形。
attributes:
-
android:radius
- Dimension. The radius for all corners, as a dimension value or dimension resource. This is overridden for each corner by the following attributes.
-
android:topLeftRadius
- Dimension. The radius for the top-left corner, as a dimension value or dimension resource.
-
android:topRightRadius
- Dimension. The radius for the top-right corner, as a dimension value or dimension resource.
-
android:bottomLeftRadius
- Dimension. The radius for the bottom-left corner, as a dimension value or dimension resource.
-
android:bottomRightRadius
- Dimension. The radius for the bottom-right corner, as a dimension value or dimension resource.
Note: Every corner must (initially) be provided a corner radius greater than 1, or else no corners are rounded. If you want specific corners to notbe rounded, a work-around is to use
android:radius
to set a default corner radius greater than 1, but then override each and every corner with the values you really want, providing zero ("0dp") where you don't want rounded corners. -
-
<gradient>
-
Specifies a gradient color for the shape.指定一個漸變顏色的形狀。
attributes:
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android:angle
- Integer. The angle for the gradient, in degrees. 0 is left to right, 90 is bottom to top. It must be a multiple of 45. Default is 0.
-
android:centerX
- Float. The relative X-position for the center of the gradient (0 - 1.0).
-
android:centerY
- Float. The relative Y-position for the center of the gradient (0 - 1.0).
-
android:centerColor
- Color. Optional color that comes between the start and end colors, as a hexadecimal value or color resource.
-
android:endColor
- Color. The ending color, as a hexadecimal value or color resource.
-
android:gradientRadius
-
Float. The radius for the gradient. Only applied when
android:type="radial"
. -
android:startColor
- Color. The starting color, as a hexadecimal value or color resource.
-
android:type
-
Keyword. The type of gradient pattern to apply. Valid values are:
Value Description "linear"
A linear gradient. This is the default. "radial"
A radial gradient. The start color is the center color. "sweep"
A sweeping line gradient. -
android:useLevel
-
Boolean. "true" if this is used as a
LevelListDrawable
.
-
-
<padding>
-
Padding to apply to the containing View element (this pads the position of the View content, not the shape).適用於包含填充視圖元素(這墊的位置,而不是觀點內容的形狀)
attributes:
-
android:left
- Dimension. Left padding, as a dimension value or dimension resource.
-
android:top
- Dimension. Top padding, as a dimension value or dimension resource.
-
android:right
- Dimension. Right padding, as a dimension value or dimension resource.
-
android:bottom
- Dimension. Bottom padding, as a dimension value or dimension resource.
-
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<size>
-
The size of the shape.
attributes:
-
android:height
- Dimension. The height of the shape, as a dimension value or dimension resource.
-
android:width
- Dimension. The width of the shape, as a dimension value or dimension resource.
Note: The shape scales to the size of the container View proportionate to the dimensions defined here, by default. When you use the shape in an
ImageView
, you can restrict scaling by setting theandroid:scaleType
to"center"
. -
-
<solid>
-
A solid color to fill the shape.
attributes:
-
android:color
- Color. The color to apply to the shape, as a hexadecimal value or color resource.
-
-
<stroke>
-
A stroke line for the shape.
attributes:
-
android:width
- Dimension. The thickness of the line, as a dimension value or dimension resource.
-
android:color
- Color. The color of the line, as a hexadecimal value or color resource.
-
android:dashGap
-
Dimension. The distance between line dashes, as a dimension value or dimension
resource. Only valid if
android:dashWidth
is set. -
android:dashWidth
-
Dimension. The size of each dash line, as a dimension value or dimension
resource. Only valid if
android:dashGap
is set.
-
-
-
gradient -- 對應顏色漸變。 startcolor、endcolor就不多說了。 android:angle 是指從哪個角度開始變。
android:startColor和android:endColor分別爲起始和結束顏色,android:angle是漸變角度,必須爲45的整數倍。
另外漸變默認的模式爲android:type="linear",即線性漸變,可以指定漸變爲徑向漸變,android:type="radial",徑向漸變需要指定半徑android:gradientRadius="50"。solid -- 填充。
android:color指定填充的顏色
stroke -- 描邊。
android:width="2dp" 描邊的寬度,android:color 描邊的顏色。
我們還可以把描邊弄成虛線的形式,設置方式爲:
android:dashWidth="5dp"
android:dashGap="3dp"