match_parent property for children in a RelativeLayout

Question

In short, is it possible to tell a child in a RelativeLayout to always match the height of that RelativeLayout regardless

Answer 1

Add listener to list item holder so every time when holder change height, set that height to a child. i1 is for top, and i3 is for bottom.

parent.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
        @Override
        public void onLayoutChange(View view, int i, int i1, int i2, int i3, int i4, int i5, int i6, int i7) {
            child.setTop(i1);
            child.setBottom(i3);
        }
    });

Answer 2

I had the same requirement and my solution was to align the top of the red stripe to the parent's top, and the bottom of the stripe to the bottom of the text view on the left. The height in this case becomes irrelevant. You can either use wrap_content or match_parent.

Answer 3

It's an annoying problem and you need to put the RelativeLayout inside a LinearLayout

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:minHeight="40dp"
        >
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">
            <RelativeLayout
                android:id="@+id/deleteItem"
                android:layout_width="60dp"
                android:layout_height="match_parent"
                android:layout_alignParentRight="true"
                android:clickable="true"
                android:background="@color/background_grey"
                >
                <TextView
                    style="@style/SmallButtonFont"
                    android:layout_marginRight="12dp"
                    android:layout_centerInParent="true"
                    android:text="CLEAR"
                    android:textColor="@color/globalRedLight" />
            </RelativeLayout>
    </RelativeLayout>
</LinearLayout>

Answer 4

Try this:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">

    <View
        android:id="@+id/stripe"
        android:layout_width="80dp"
        android:layout_height="match_parent"
        android:layout_alignBottom="@id/text"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@id/text"
        android:background="#f00"
        android:minHeight="50dp"/>

    <TextView
        android:id="@+id/text"
        style="?android:textAppearanceLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_toLeftOf="@id/stripe"
        android:text="This is a very long line, meant to completely break the match_parent property of the box at right"/>

    <View
        android:id="@+id/bottom_line"
        android:layout_width="match_parent"
        android:layout_height="5dp"
        android:layout_below="@id/text"
        android:background="#fc0"/>

</RelativeLayout>

The align top and bottom of the red view is the same as textview now.

Answer 5

Simply put your main RelativeLayout inside a LinearLayout, then the calculation of child Views height will be correct . I had the same problem and it worked for me.