我已经在android中创建了一个底部导航栏,现在我想在向上滚动时将其隐藏,而在向下滚动时将其显示。有人可以让我知道怎么做吗?我尚未使用任何库创建导航栏。我用线性和相对布局制作的。 这是我的MainActivity.java XML文件。
<android.support.v4.widget.DrawerLayout
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:id="@+id/MageNative_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:fitsSystemWindows="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="@+id/MageNative_toolbar"
android:layout_width="match_parent"
android:layout_height="60dp"
app:theme="@style/AppTheme">
<ImageView
android:id="@+id/toolimage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:contentDescription="@string/app_name"
/>
<TextView
android:id="@+id/tooltext"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:gravity="center_vertical"
android:text="@string/app_name"
android:textAllCaps="true"
android:textColor="@color/black"
android:textSize="15sp"
android:visibility="gone"
android:textStyle="bold"
/>
</android.support.v7.widget.Toolbar>
<FrameLayout
android:id="@+id/MageNative_frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:layout_marginBottom="60dp"
android:layout_below="@+id/MageNative_toolbar">
</FrameLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:id="@+id/bottom_toolbar"
android:background="@color/white"
android:layout_alignParentBottom="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:layout_centerInParent="true"
android:weightSum="1"
android:baselineAligned="false"
android:background="@color/white"
android:layout_marginTop="10dp"
>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="0.2"
android:id="@+id/home_icon_sect"
android:orientation="vertical"
android:layout_height="50dp">
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:tint="#343D4E"
android:src="@drawable/home"
android:id="@+id/home_icon"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/black"
android:gravity="center"
android:textSize="11sp"
android:text="@string/home"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="0.2"
android:orientation="vertical"
android:id="@+id/categories"
android:layout_height="50dp">
<ImageView
android:id="@+id/wish_icon"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:src="@drawable/home"
android:tint="#343D4E" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/black"
android:gravity="center"
android:textSize="11sp"
android:text="@string/categories"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="0.2"
android:orientation="vertical"
android:id="@+id/notification_icon_sect"
android:layout_height="50dp">
<ImageView
android:id="@+id/notification_icon"
android:layout_width="wrap_content"
android:layout_height="25dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:src="@drawable/search"
android:tint="#343D4E" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="@string/search"
android:textColor="@color/black"
android:textSize="11sp" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="0.2"
android:orientation="vertical"
android:id="@+id/user_icon_sect"
android:layout_height="50dp">
<ImageView
android:id="@+id/user_icon"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:src="@drawable/home"
android:tint="#343D4E" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/black"
android:gravity="center"
android:textSize="11sp"
android:text="@string/account"/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="0.2"
android:id="@+id/drawer_menu_sect"
android:orientation="vertical"
android:layout_height="50dp">
<ImageView
android:id="@+id/drawer_menu"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_marginTop="10dp"
android:layout_centerHorizontal="true"
android:layout_gravity="center_horizontal"
android:src="@drawable/bag"
android:tint="#343D4E" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/black"
android:gravity="center"
android:layout_below="@+id/drawer_menu"
android:textSize="11sp"
android:text="@string/cart"/>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
<fragment
android:id="@+id/MageNative_fragment_navigation_drawer"
android:name="com.freshgrocy.app.maincontainer.FragmentDrawer"
android:layout_width="290dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:layout="@layout/fragment_drawer"
tools:layout="@layout/fragment_drawer" />
</android.support.v4.widget.DrawerLayout>
答案 0 :(得分:0)
只需在您的app:layout_behavior="@string/hide_bottom_view_on_scroll_behavior"
中添加BottomNavigationView
。
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
....
app:layout_behavior="@string/hide_bottom_view_on_scroll_behavior" />
答案 1 :(得分:0)
我知道可能已经晚了,但是我得到了答案,两个月前我正在搜索并且什么也没找到,但是几分钟前我找到了解决方案并检查了它在Android上是否运行良好Kitkat超越了,决定分享它。我从AppIntro库中提取了它,然后开始:
public void setImmersiveMode(boolean isEnabled, boolean isSticky) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
if(!isEnabled && isImmersiveModeEnabled) {
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
isImmersiveModeEnabled = false;
} else if(isEnabled) {
int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN;
if(isSticky) {
flags |= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
isImmersiveModeSticky = true;
} else {
flags |= View.SYSTEM_UI_FLAG_IMMERSIVE;
isImmersiveModeSticky = false;
}
getWindow().getDecorView().setSystemUiVisibility(flags);
isImmersiveModeEnabled = true;
}
}
}
您的活动中:
public boolean isImmersiveModeEnabled = false;
public boolean isImmersiveModeSticky = false;
并在您的代码中使用它:
setImmersiveMode(true,false);
或
setImmersiveMode(true,false);
快乐编码:)