使用scrollFlags时,自定义工具栏未隐藏

时间:2019-04-30 17:52:37

标签: java android scroll android-toolbar

我要做什么::我正在尝试实现一种功能,该功能在用户向下滚动时隐藏Toolbar,并在用户向上滚动时使其可见。就像在eBay应用中一样,当用户向下滚动时,搜索栏消失,而当用户向上滚动时,搜索栏出现在顶部。

我尝试使用app:layout_scrollFlags="scroll|enterAlways",但是当我向下滚动时它不会隐藏工具栏。

XML代码:

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">

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

    <include
        android:id="@+id/toolBar"
        layout="@layout/toolbar" />
    <include
        android:id="@+id/searchToolBar"
        layout="@layout/search_toolbar" />

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


<android.support.v4.widget.DrawerLayout
    android:id="@+id/main_activity_drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".MainActivity">


<ScrollView
    android:id="@+id/searchBarScrollView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

<LinearLayout
    android:id="@+id/main_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    >


    <ImageView
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:src="@drawable/camera" />
    <ImageView
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:src="@drawable/camera" />
    <ImageView
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:src="@drawable/camera" />

</LinearLayout>


</ScrollView>



    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:menu="@menu/navigation_menu">

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

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


</LinearLayout>

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

工具栏布局

search_toolbar

 <?xml version="1.0" encoding="utf-8"?>
 <android.support.v7.widget.Toolbar 
 xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="@color/ebayBlue"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/Base.ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways"
android:id="@+id/searchtoolBar">

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/round_corners"
        android:backgroundTint="@color/white"
        android:layout_marginStart="10dp"
        android:layout_marginEnd="10dp"
        android:padding="10dp">

        <ImageView
            android:id="@+id/searchImage"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_centerVertical="true"
            android:layout_marginStart="16dp"
            android:src="@drawable/search" />

        <TextView
            android:id="@+id/search_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:layout_marginStart="12dp"
            android:layout_toEndOf="@+id/searchImage"
            android:onClick="searchWindow"
            android:text="Search for anything"
            android:textSize="18sp" />

        <ImageView
            android:id="@+id/mic_image"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_centerVertical="true"
            android:layout_marginEnd="18dp"
            android:layout_toLeftOf="@+id/camera_image"
            android:src="@drawable/mic" />

        <ImageView
            android:id="@+id/camera_image"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_alignParentEnd="true"
            android:layout_centerVertical="true"
            android:layout_marginEnd="16dp"
            android:src="@drawable/camera" />
    </RelativeLayout>

 </android.support.v7.widget.Toolbar>

main toolbar

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar 
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:background="@color/ebayBlue"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/Base.ThemeOverlay.AppCompat.Light"
android:id="@+id/toolBar">

<ImageView
    android:layout_width="75dp"
    android:layout_height="40dp"
    android:src="@drawable/ebaylogo"
    android:layout_gravity="left"/>

</android.support.v7.widget.Toolbar>

MainActivity.java

公共类MainActivity扩展了AppCompatActivity {

// ToolBar
Toolbar toolbar;
Toolbar searchToolBar;
// Drawer
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mMenuToggle;

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

    // Sets toolbar
    toolbar = findViewById(R.id.toolBar);
    searchToolBar = findViewById(R.id.searchToolBar);
    setSupportActionBar(searchToolBar);
    setSupportActionBar(toolbar);

    // Main Activity DrawerLayout with Toggle
    mDrawerLayout = findViewById(R.id.main_activity_drawer_layout);

    // Menu Toggle Button for Drawer
    mMenuToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, 
 R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    mDrawerLayout.addDrawerListener(mMenuToggle);
    mMenuToggle.syncState();

}}

预期和实际结果:工具栏android:id="@+id/searchToolbar"在用户向下滚动时应隐藏,而在用户向上滚动时应可见。现在什么也没发生。

1 个答案:

答案 0 :(得分:1)

在您的情况下,我建议您使用BottomSheet而不是您的LinearLayout来实现您想要的行为要困难得多。 BottomSheet的常规实现不能覆盖全屏,但是,您可以对其进行修改以具有全屏高度。

这是一个nice implementation,可能会有所帮助。