WindowManager.LayoutParams lp=getWindow().getAttributes();
lp.alpha=0.3f;
getWindow().setAttributes(lp);
轉載請註明出處:http://blog.csdn.net/chenlinfeng772885775/article/details/51304289
getWindow().setAttributes(lp);
轉載請註明出處:http://blog.csdn.net/chenlinfeng772885775/article/details/51304289