为了解决这个问题,我定义了一个像这样的 RelativeLayout Behavior。这可以为任何视图完成,只需将所有 RelativeLayout 替换为所需的 UI 元素。
public class RelativeLayoutBehavior extends CoordinatorLayout.Behavior<RelativeLayout> {
public RelativeLayoutBehavior(Context context, AttributeSet attrs) {
}
@Override
public boolean layoutDependsOn(CoordinatorLayout parent, RelativeLayout child, View dependency) {
return dependency instanceof Snackbar.SnackbarLayout;
}
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, RelativeLayout child, final View dependency) {
Float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
child.setTranslationY(translationY);
return true;
}
@Override
public void onDependentViewRemoved(CoordinatorLayout parent, RelativeLayout child, View dependency) {
child.setTranslationY(0);
}
}
然后你需要像这样将 Behavior 添加到 RelativeLayout "android:layout_behavior" 属性中。确保您要向上滑动的 RelativeLayout 也在 CoordinateLayout 内部。
<?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:id="@+id/main_coordinate_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#323232"
tools:context="com.choch.michaeldicioccio.myapplication.MainActivity">
<RelativeLayout
android:id="@+id/bottom_navigation_relative_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:gravity="bottom"
app:layout_behavior="com.yourPackagePath.RelativeLayoutBehavior" >
<android.support.design.widget.BottomNavigationView
android:id="@+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="@color/colorPrimary"
android:clickable="true"
app:elevation="8dp"
app:itemBackground="@color/colorPrimary"
app:itemIconTint="@drawable/bottom_navigation_color_selector"
app:itemTextColor="@drawable/bottom_navigation_color_selector"
app:menu="@menu/bottom_bar_menu" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/add_car_fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_above="@id/bottom_navigation"
android:layout_margin="@dimen/fab_margin"
android:scaleType="center"
android:src="@mipmap/ic_plus_black_36dp"
android:tint="@color/colorPrimary"
app:elevation="8dp"/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>