Five la s in Android and five la s in Android

Five la s in Android and five la s in Android

Layout1 and LinearLayout linear layout (can be nested): The linear layout is arranged horizontally by horizontal and vertically by verticaleg: Android: orientation = "horizontal" controls the display area of the content of the current control: eg: android: gravity = "right | center_vertical" controls the location of the current control in the parent element: eg: android: layout_gravity = "right" extra space allocation (weight): total additional space (under the <LinearLayout/> node) android: Layout_weightSumeg: android: layout_weightSum = "2" additional space allocated: (under the byte of the <LinearLayout/> node) Layout_weighteg: android: layout_weight = "1" controls whether the layout is displayed: visible, not displayed, but occupied space invisible, hidden (not occupied space) goneeg: android: visibility = "invisible" 2, relative layout of RelativeLayout: android: layout_centerVertical vertical center in parent layout android: layout_centerHorizontal horizontal center in parent layout android: layout_centerInParent center in parent layout eg: android: layout_centerHorizontal = "true" android: whether layout_alignParentLeft is left aligned with the parent layout android: layout_alignParentTop whether it is aligned with the parent layout top android: layout_alignParentRight whether it is right aligned with the parent layout android: layout_alignParentRight = "true" android: layout_toRightOf android: layout_toLeftOf on the right of the specified control on the left of the specified control android: layout_above on the top of the specified control android: layout_below on the bottom: android: layout_toLeftOf = "@ id/btn_center" android: layout_alignBaseline horizontal alignbaseline: android: layout_alignLeft: Left alignleft: android: layout_alignRight: layout_alignTop aligntop alignbottom aligntop: android: layout_alignTop = @ id/btn_center, <TableRow/> when the cell width in the cell row is smaller than the default width, the default value is fill_parent. The height can be customized to 2. The column number is ranked from 0 to 0, 2, 3 · android: shrinkColumns shrink column (set in <TableLayout/> to apply to the entire table) android: stretchColumns stretch column (set in <TableLayout/>, used in the entire table) android: collapseColumns hidden columns (set in <TableLayout/> for the entire table) eg: android: shrinkColumns = "0" when the row width is not enough, 0th columns automatically shrink narrow eg: android: collapseColumns = "0" Hide 0th columns android: layout_column specify the column in which the control is located (in <TableRow/>, android: layout_span specifies the number of columns that the control occupies in the row (set in <TableRow/> to apply to the control specified in the row ), the default value is 1 eg: android: layout_column = "2", which specifies that the controller is in the 2nd column of the row (subscript: 2) eg: android: layout_span = "2" indicates that the number of columns occupied by the control in this row is 24, and the absolute layout of AbsoluteLayout: android: layout_x specifies the X axis coordinate of the control in the parent layout. For example: android: layout_x = "30dp" android: layout_y specifies the Y axis coordinate of the control in the parent layout. For example: android: layout_y = "40dp" 5. FrameLayout frame layout: the newly added control overwrites the previous one, that is, each added control is displayed on the top.

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