直接在代码层实现自定义dialog，只要几行代码就够了，做个记录

    private void showDialog() {

    if (mDialog == null) {
        mDialog = new AlertDialog.Builder(this, R.style.MyDialog).create();
    }
    mDialog.show();

    View dialogView = LayoutInflater.from(this).inflate(R.layout.item_complete_dialog, null);
    ViewGroup parent = (ViewGroup) dialogView.getParent();
    if (parent != null) {
        parent.removeAllViews();
    }

    mDialog.setCanceledOnTouchOutside(false);
    mDialog.getWindow().setContentView(dialogView);
    mDialog.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
    mDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE |
            WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);

    dialogView.findViewById(R.id.id_iv_close).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            mDialog.dismiss();
        }
    });

    dialogView.findViewById(R.id.yes).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            startActivity(new Intent(MainHomeActivity.this, UserInfoActivity.class));
            mDialog.dismiss();
        }
    });


}

item_complete_dialog 布局 有点乱。。。

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical">

<LinearLayout
    android:layout_width="280dp"
    android:layout_height="170dp"
    android:layout_centerInParent="true"
    android:background="@drawable/bg_login_code"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/id_iv_close"
        android:layout_width="24dp"
        android:layout_height="24dp"
        android:layout_gravity="right"
        android:layout_margin="8dp"
        android:scaleType="center"
        android:src="@mipmap/ic_login_close" />


    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:gravity="center"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/message"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:text="请先完善个人信息，审核更快捷，所在城市请精确到区县。"
            android:textColor="#333333"
            android:textSize="16sp" />


    </LinearLayout>


    <View
        android:layout_width="match_parent"
        android:layout_height="1px"
        android:layout_marginTop="15dp"
        android:background="#E4E4E4"
        android:visibility="invisible" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:orientation="horizontal">


        <Button
            android:id="@+id/yes"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="@null"
            android:gravity="center"
            android:singleLine="true"
            android:text="立即完善"
            android:textColor="#FC4E3B"
            android:textSize="18sp" />
    </LinearLayout>
</LinearLayout>

</RelativeLayout>

MyDialog 的样式

  <style name="MyDialog" parent="@android:style/Theme.Dialog">
    <item name="android:windowFrame">@null</item>
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowIsFloating">true</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowCloseOnTouchOutside">false</item>
    </style>