下面是设置对话框x的偏移量。
int marginLeft = 100;
Window window = getDialog().getWindow();
WindowManager.LayoutParams wmlp =window.getAttributes();
wmlp.gravity = Gravity.LEFT;
wmlp.x = marginLeft;
Log.i(getTag(), "wmlp="+wmlp);
window.setAttributes(wmlp);
值得注意的是: 我们要看看WindowManager.LayoutParams的文档中关于x,y属性的说明:
/**
* X position for this window. With the default gravity it is ignored.
* When using {@link Gravity#LEFT} or {@link Gravity#START} or {@link Gravity#RIGHT} or
* {@link Gravity#END} it provides an offset from the given edge.
*/
@ViewDebug.ExportedProperty
public int x;
/**
* Y position for this window. With the default gravity it is ignored.
* When using {@link Gravity#TOP} or {@link Gravity#BOTTOM} it provides
* an offset from the given edge.
*/
@ViewDebug.ExportedProperty
public int y;
重要的两点就是:
(1)如果你需要设置x的值,那么需要将gravity设置有LEFT,START,RIGHT或者END。
(2)如果你需要设置y的值,那么需要将gravity设置成有TOP,BOTTOM。
上面的两点,如果你的对FrameLayout设置的margin不起作用了,可能也是需要遵守上面两点规则。