如何将数据绑定到标头? [英] How to data bind to a header?

问题描述

我有一个主要活动，在操作栏中有一个侧面导航抽屉，在default_screen.xml中指定如下(请注意，为简洁起见，省略了很多代码):

I have a main activity with a side navigation drawer in the action bar, specified as follows (note that a lot of code has been omitted for brevity) in default_screen.xml:

<?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="190dp"
    android:background="@drawable/honeycomb"
    android:orientation="vertical"
    >
    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_height="match_parent"
        android:layout_width="wrap_content"
        android:layout_gravity="start"
        app:headerLayout="@layout/header"
        app:menu="@menu/drawer"
        />

布局/标题如下(同样，为简洁起见，省略了许多行):

where layout/header is as follows (again, a bunch of lines omitted for brevity):

<data>
    <variable name="user" type="oose2017.place2b.ClientUser"/>
</data>
<TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{user.displayName}"
        android:textSize="14sp"
        android:textColor="#FFF"
        android:textStyle="bold"
        android:gravity="left"
        android:paddingBottom="4dp"
        android:id="@+id/username"
        android:layout_above="@+id/email"
        android:layout_alignLeft="@+id/profile_image"
        android:layout_alignStart="@+id/profile_image" />
</RelativeLayout>

我在主活动中实例化default_screen的位置如下:

Where I instantiate my default_screen in the main activity as follows:

  setContentView(R.layout.default_screen);

如何将数据绑定到标题?我尝试了一些失败的尝试，主要是:

How do I data bind to the header? I have tried a few things unsuccessfully, mainly:

DefaultScreenBinding binding = DataBindingUtil.setContentView(R.layout.default_screen);

这不起作用.我该怎么办?

Which does not work. How can I do this?

推荐答案

有效的解决方案如下，在主要活动OnCreate中添加标题视图:

Valid solution will be following, add header view in main activity OnCreate:

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding = DataBindingUtil.setContentView(this, R.layout.activity_main);

        NavHeaderMainBinding _bind = DataBindingUtil.inflate(getLayoutInflater(), R.layout.nav_header_main, binding
                .navView, false);
        binding.navView.addHeaderView(_bind.getRoot());
        _bind.setUser(Session.getUserProfile());
}

这篇关于如何将数据绑定到标头?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！