dialog 没有居中或者显示不全（小米手机）

解决办法
                    Window window =dialog.getWindow();
//                  window.setGravity(Gravity.CENTER);
                    WindowManager.LayoutParams layoutParams = window.getAttributes();
                    layoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;
                    layoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
                    window.setAttributes(layoutParams);

参考：https://article.itxueyuan.com/O0P9M
https://dandelioncloud.cn/article/details/1503805753193492481