android layout_gravity

本文详细解释了Android中布局属性layout_gravity的具体含义及其使用方式。通过列举Gravity类中的常量,帮助开发者更好地理解如何控制视图在父容器中的位置及对其方式。

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android:layout_gravity=”0x37”
意思就是
android:layout_gravity=”top|fill_horizontal”

Gravity类提供的常量列表如下:
NO_GRAVITY                                   Constant Value: 0 (0x00000000)
LEFT                                                 Constant Value: 3 (0x00000003)
RIGHT                                              Constant Value: 5 (0x00000005)
START                                              Constant Value: 8388611 (0x00800003)
END                                                 Constant Value: 8388613 (0x00800005)
TOP                                                  Constant Value: 48 (0x00000030)
BOTTOM                                          Constant Value: 80 (0x00000050)
CENTER                                            Constant Value: 17 (0x00000011)
CENTER_HORIZONTAL                     Constant Value: 1 (0x00000001)
CENTER_VERTICAL                           Constant Value: 16 (0x00000010)
FILL_HORIZONTAL                           Constant Value: 7 (0x00000007)
FILL_VERTICAL                                  Constant Value: 112 (0x00000070)
FILL                                                   Constant Value: 119 (0x00000077)
CLIP_HORIZONTAL                           Constant Value: 8 (0x00000008)
CLIP_VERTICAL                                 Constant Value: 128 (0x00000080)
DISPLAY_CLIP_HORIZONTAL           Constant Value: 16777216 (0x01000000)
DISPLAY_CLIP_VERTICAL                  Constant Value: 268435456 (0x10000000)
HORIZONTAL_GRAVITY_MASK         Constant Value: 7 (0x00000007)
VERTICAL_GRAVITY_MASK                    Constant Value: 112 (0x00000070)
RELATIVE_HORIZONTAL_GRAVITY_MASK   Constant Value: 8388615 (0x00800007)
RELATIVE_LAYOUT_DIRECTION          Constant Value: 8388608 (0x00800000)
AXIS_CLIP                                            Constant Value: 8 (0x00000008)
AXIS_PULL_AFTER                               Constant Value: 4 (0x00000004)
AXIS_PULL_BEFORE                              Constant Value: 2 (0x00000002)
AXIS_SPECIFIED                                     Constant Value: 1 (0x00000001)
AXIS_X_SHIFT                                       Constant Value: 0 (0x00000000)
AXIS_Y_SHIFT                                      Constant Value: 4 (0x00000004)

参考:
https://developer.android.com/reference/android/view/Gravity.html

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