Android android:gravity属性介绍及效果图


     apply(int, int, int, Rect, int, int, Rect)

; you must do so yourself by calling


     applyDisplay(int, Rect, Rect)

Constant Value: 16777216 (0x01000000)

public static final int DISPLAY_CLIP_VERTICAL

Since: API Level 3

Special constant to enable clipping to an overall display along the vertical dimension. This is not applied by default by


     apply(int, int, int, Rect, int, int, Rect)

; you must do so yourself by calling


     applyDisplay(int, Rect, Rect)

Constant Value: 268435456 (0x10000000)

public static final int END

Since: API Level 14

Push object to x-axis position at the end of its container, not changing its size.

Constant Value: 8388613 (0x00800005)

public static final int FILL

Since: API Level 1

Grow the horizontal and vertical size of the object if needed so it completely fills its container.

Constant Value: 119 (0x00000077)

public static final int FILL_HORIZONTAL

Since: API Level 1

Grow the horizontal size of the object if needed so it completely fills its container.

Constant Value: 7 (0x00000007)

public static final int FILL_VERTICAL

Since: API Level 1

Grow the vertical size of the object if needed so it completely fills its container.

Constant Value: 112 (0x00000070)

public static final int HORIZONTAL_GRAVITY_MASK

Since: API Level 1

Binary mask to get the absolute horizontal gravity of a gravity.

Constant Value: 7 (0x00000007)

public static final int LEFT

Since: API Level 1

Push object to the left of its container, not changing its size.

Constant Value: 3 (0x00000003)

public static final int NO_GRAVITY

Since: API Level 1

Constant indicating that no gravity has been set

Constant Value: 0 (0x00000000)

public static final int RELATIVE_HORIZONTAL_GRAVITY_MASK

Since: API Level 14

Binary mask for the horizontal gravity and script specific direction bit.

Constant Value: 8388615 (0x00800007)

public static final int RELATIVE_LAYOUT_DIRECTION

Since: API Level 14

Raw bit controlling whether the layout direction is relative or not (START/END instead of absolute LEFT/RIGHT).

Constant Value: 8388608 (0x00800000)

public static final int RIGHT

Since: API Level 1

Push object to the right of its container, not changing its size.

Constant Value: 5 (0x00000005)

public static final int START

Since: API Level 14

Push object to x-axis position at the start of its container, not changing its size.

Constant Value: 8388611 (0x00800003)

public static final int TOP

Since: API Level 1

Push object to the top of its container, not changing its size.

Constant Value: 48 (0x00000030)

public static final int VERTICAL_GRAVITY_MASK

Since: API Level 1

Binary mask to get the vertical gravity of a gravity.

Constant Value: 112 (0x00000070)

效果图1：

布局文件xml内容如下：

<? xml version= "1.0" encoding= "utf-8" ?>

< LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android"

android:layout_width= "fill_parent"

android:layout_height= "fill_parent"

android:orientation= "vertical" >

< TextView android:id= "@+id/TextView01"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "top"

android:gravity= "top"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView02"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "bottom"

android:gravity= "bottom"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView03"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "left"

android:gravity= "left"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView04"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "right"

android:gravity= "right"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView05"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "center_vertical"

android:gravity= "center_vertical"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView06"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "fill_vertical"

android:gravity= "fill_vertical"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView07"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "center_horizontal"

android:gravity= "center_horizontal"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView08"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "fill_horizontal"

android:gravity= "fill_horizontal"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView09"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "center"

android:gravity= "center"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView10"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "fill"

android:gravity= "fill"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView11"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "clip_vertical"

android:gravity= "clip_vertical"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

< TextView android:id= "@+id/TextView12"

android:layout_width= "fill_parent"

android:layout_height= "35dp"

android:text= "clip_horizontal"

android:gravity= "clip_horizontal"

android:textColor= "#ffffff"

android:background= "#ff0000"

android:layout_margin= "1px" />

</ LinearLayout >

效果图2：

xml布局文件如下：

[html] view plain copy

<? xml version= "1.0" encoding= "utf-8" ?>

< LinearLayout xmlns:android= "http://schemas.android.com/apk/res/android"

android:layout_width= "fill_parent"

android:layout_height= "fill_parent"

android:orientation= "vertical" >

< TextView android:id= "@+id/TextView01"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "top"

android:gravity= "top"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView02"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "bottom"

android:gravity= "bottom"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView03"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "left"

android:gravity= "left"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView04"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "right"

android:gravity= "right"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView05"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "center_vertical"

android:gravity= "center_vertical"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView06"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "fill_vertical"

android:gravity= "fill_vertical"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView07"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "center_horizontal"

android:gravity= "center_horizontal"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView08"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "fill_horizontal"

android:gravity= "fill_horizontal"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView09"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "center"

android:gravity= "center"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView10"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "fill"

android:gravity= "fill"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView11"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "clip_vertical"

android:gravity= "clip_vertical"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

< TextView android:id= "@+id/TextView12"

android:layout_width= "fill_parent"

android:layout_height= "50dp"

android:text= "clip_horizontal"

android:gravity= "clip_horizontal"

android:textColor= "#ffffff"

android:background= "#00ff00"

android:layout_margin= "2px" />

</ LinearLayout >