Reputation: 1
Is there a way to position the view in the center of BottonSheetFragment
. I have a simple LinearLayout
where the name and price located. Under these field i have one more LinearLayout
with an error state. I need the error state to always be beetween the price and the bottom system bar, regardless of the state of the BottomSheetFragment
.
xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
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="match_parent">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="@dimen/md_theme_indent_2x">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Product name"
android:layout_marginVertical="@dimen/md_theme_indent_1x_half"
android:textAppearance="?attr/textAppearanceTitleLarge"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="12.00 $"
android:textColor="?attr/colorOnSurfaceVariant"
android:textAppearance="?attr/textAppearanceBodyMedium"/>
</LinearLayout>
<LinearLayout
android:id="@+id/error_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:layout_width="44dp"
android:layout_height="44dp"
android:src="@drawable/info_24"
android:tint="?attr/colorOnSurfaceVariant"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/md_theme_indent_2x"
android:text="Error title"
android:gravity="center"
android:textAppearance="?attr/textAppearanceTitleMedium"
android:textColor="?attr/colorOnSurfaceVariant"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/md_theme_indent_1x"
android:text="Error subtitle"
android:textAppearance="?attr/textAppearanceBodyMedium"
android:textColor="?attr/colorOnSurfaceVariant"
android:gravity="center"/>
</LinearLayout>
</LinearLayout>
</androidx.core.widget.NestedScrollView>
</LinearLayout>
I found a solution with dynamic calculation height of error_state
inside BottomSheetCallback.OnSlide
method. But after dragging the bottom sheet for the first time, the error_state
jump occurs.
public class BottomSheetCallback(LinearLayout errorView) : BottomSheetBehavior.BottomSheetCallback
{
public override void OnSlide(View bottomSheet, float slideOffset)
{
var y = errorView.GetY();
var newHeight = (bottomSheet.Height - bottomSheet.Top - y) * 0.8;
var parameters = errorView.LayoutParameters;
if (parameters != null)
parameters.Height = (int)newHeight;
errorView.LayoutParameters = parameters;
}
public override void OnStateChanged(View bottomSheet, int newState)
{
}
}
Upvotes: 0
Views: 25