當(dāng)手機(jī)安卓系統(tǒng)為7.0時(shí),showAsDropDown()不起效果,我們可以用showAtLocation來(lái)解決這個(gè)問(wèn)題
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
mPopupWindow.showAtLocation(mToolbar, Gravity.NO_GRAVITY, 0, mToolbar.getHeight());
} else {
mPopupWindow.showAsDropDown(mToolbar);
}