将view添加到WindowManager时如何获得View所需大小的问题？

[harry330]

如题。

getWidth/Height是不行的，以为此时view还没有绘制。在网上看到有如下方式：
int widthSpec = MeasureSpec.makeMeasureSpec(mDecorView.getWidth(), MeasureSpec.AT_MOST);
int heightSpec = MeasureSpec.UNSPECIFIED;
mDecorView.measure(widthSpec, heightSpec);
Log.v("MyTag", "screen height: " + mWindowManager.getDefaultDisplay().getHeight());
Log.v("MyTag", "height: " + mDecorView.getMeasuredHeight());
但是发现得到的height比整个屏幕大的多，明显不对。

[wenzheng38]

MeasureSpec.AT_MOST
MeasureSpec.UNSPECIFIED改成 MeasureSpec.EXACTLY试试

[pananc]

试试
int w = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
int h = View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
mMenuLayout.measure(w, h);
int width =mMenuLayout.getMeasuredWidth();