通過調用toast的getWindowParams方法獲取toast的WindowParams,再設置允許在鎖屏之上顯示的window flag FLAG_SHOW_WHEN_LOCKED
參考代碼如下
Toast mToast = Toast.makeText(mContext, res, Toast.LENGTH_SHORT);
mToast.getWindowParams().flags |= WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
mToast.show();