只是分享一个稍微不同的方法。
您可以只转换为 ,而不是转换为LinearLayout.LayoutParams
,RelativeLayout.LayoutParams
等MarginLayoutParams
。
转换MarginLayoutParams
为更好,因为您可以稍后更新您的布局,并且您不需要返回到您的 java 代码来更改LinearLayout
toRelativeLayout
或任何其他布局类型
您可以执行以下操作:
MarginLayoutParams layoutParams = (MarginLayoutParams) view.getLayoutParams();
// Set bottom margin
layoutParams.bottomMargin = x;
// Set top margin
layoutParams.topMargin = x;
// Set left margin
// This won't have effect if you set any relative margin (start) previously or in the layout.xml
layoutParams.leftMargin = x;
// Set left margin
// This won't have effect if you set any relative margin (end) previously or in the layout.xml
layoutParams.rightMargin = x;
// Set start margin
layoutParams.setMarginStart(x);
// Set end margin
layoutParams.setMarginStart(x);
// Set all left, top, right, bottom margins at once
// Note that here, left and right margins are set (not start/end).
// So, if you have used start/end margin before (or via layout.xml),
// setting left/right here won't have any effect.
layoutParams.setMargins(left, top, end, bottom)
// Then re-apply the layout params again to force the view to be re-draw
// This step may not be necessary because depending where you set the margin,
// view is already scheduled to be drawn
// For any case, to ensure the view will apply the new margin, call:
view.setLayoutParams(layoutParams);