【发布时间】：2015-11-21 15:47:24
【问题描述】：
这是我的activity_main.xml：
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="MainActivity"
>
<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. -->
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<!-- As the main content view, the view below consumes the entire
space available using match_parent in both dimensions. -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/ll_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="@+id/my_awesome_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/black"
android:fitsSystemWindows="true"
>
<TextView
android:id="@+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:textColor="@android:color/white"
android:textSize="@dimen/abc_text_size_title_material_toolbar"
tools:text="@string/default_toolbar_title"/>
</android.support.v7.widget.Toolbar>
<FrameLayout
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
</LinearLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab_fuf"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="20dp"
android:layout_marginEnd="20dp"
android:layout_marginRight="20dp"
android:src="@drawable/flamme"
app:fabSize="normal"
/>
</RelativeLayout>
<android.support.design.widget.NavigationView
android:id="@+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@android:color/black"
**app:headerLayout="@layout/drawer_header"**
app:itemTextColor="@color/drawer_item_color_selector"
app:menu="@menu/menu_drawer"/>
</android.support.v4.widget.DrawerLayout>
</layout>
我正在为活动使用绑定，所以我不必使用 findViewById 并对其进行转换等。像这样：
ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
Toolbar toolbar = binding.myAwesomeToolbar;
toolbarTitle = binding.toolbarTitle;
BalrogFontsHelper.SetKhandBoldToView(toolbarTitle);
setSupportActionBar(toolbar);
final ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setHomeAsUpIndicator(R.drawable.ic_dehaze_white_24);
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(false);
}
drawerLayout = binding.drawerLayout;
**tvLoggedUserEmail = (TextView) findViewById(R.id.tv_logged_user_email);**
BalrogFontsHelper.SetKhandBoldToView(tvLoggedUserEmail);
如您所见，我可以通过绑定获取直接在 activity_main.xml 布局中的视图，但是当我尝试获取的视图不存在时，我看不到绑定对象中的变量。
drawer_header.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="96dp"
xmlns:tools="http://schemas.android.com/tools"
android:background="@android:color/black"
android:theme="@style/ThemeOverlay.AppCompat.Dark">
<TextView
android:id="@+id/tv_logged_user_email"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="16dp"
tools:text="@string/login_placeholder_email"
android:textAllCaps="true"
android:textAppearance="@style/TextAppearance.AppCompat.Body2"
android:textSize="20sp"/>
</RelativeLayout>
我怎样才能以绑定方式获得这个 tv_logged_user_email TextView 所以我有：
**tvLoggedUserEmail = binding.tvLoggedUserEmail;**
【问题讨论】：
标签： android android-activity view binding drawer