android - 如何删除actionbar的底线

Question

我想让操作栏底线消失，我尝试使用toolbar.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); 显然它不起作用。

有没有可能让底线消失？任何帮助将不胜感激，谢谢。

我的 MainActivity xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.user.taiwandigestionsociety_v11.MainActivity">


    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#FFFFFF">


<include layout="@layout/toolbar"/>

        <FrameLayout
            android:id="@+id/mainFrame"
            android:layout_gravity="end"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

        </FrameLayout>

    </android.support.design.widget.AppBarLayout>


    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="@android:color/transparent"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header">
    </android.support.design.widget.NavigationView>


</android.support.v4.widget.DrawerLayout>

我的工具栏 xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:theme="@style/ToolBarStyle"
        app:titleTextAppearance="@style/ToolBarStyle"
        android:background="#29395e">
    </android.support.v7.widget.Toolbar>


</android.support.design.widget.AppBarLayout>

根据一些响应，我将 MainActivity 的操作栏设置如下:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    initViews();

    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setTitle("");
    getSupportActionBar().setElevation(0);//it dosen't work, i use the app theme too.

我的风格:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">#29395e</item>
    <item name="android:scrollbarThumbVertical">@android:color/transparent</item>
    <item name="android:windowContentOverlay">@null</item>
</style>

<!-- ToolBar-->
<style name="ToolBarStyle" parent="Theme.AppCompat">
    <item name="android:textColorPrimary">@android:color/white</item>
    <item name="android:textColorSecondary">@android:color/white</item>
    <item name="actionMenuTextColor">@android:color/white</item>
    <item name="android:textSize">18sp</item>
    <item name="android:textStyle">bold</item>
    <item name="android:windowContentOverlay">@null</item>

Answer 1

<style name="Theme.MyApplication" parent="Theme.AppCompat.Light">
    <item name="actionBarStyle">@style/Theme.MyApplication.ActionBar</item>
</style>


<style name="Theme.MyApplication.ActionBar" parent="style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
<!-- <item name="android:elevation">0dp</item> -->
<!-- if you are using support library thn elevation should be without android namespace like below else the above one uncomment-->
<item name="elevation">0dp</item>
</style>

处理5.0以下

<item name="android:windowContentOverlay">@null</item>

或者

以下内容不适用于前 Lollipop

如果支持action bar

getSupportActionBar().setElevation(0);

如果不支持actionbar

getActionBar().setElevation(0);

如果有任何问题请告诉我。