width - Android RelativeLayout and childs with layout_width="match_parent" -


how android calculates size of view when have 2 views @ same "row", 1 width="fill_parent"?

example:

<relativelayout       xmlns:android="http://schemas.android.com/apk/res/android"       android:layout_height="fill_parent"       android:layout_width="fill_parent">       <edittext           android:id="@+id/edittext01"           android:hint="enter text..."           android:layout_alignparentleft="true"           android:layout_width="match_parent"           android:layout_toleftof="@+id/button01"           android:layout_height="wrap_content"></edittext>       <button           android:id="@+id/button01"           android:text="press here!"           android:layout_width="wrap_content"           android:layout_alignparentright="true"           android:layout_height="wrap_content"></button>   </relativelayout>

this code gives free space edittext , show button right. changes edittext fills width , button out of screen:

<relativelayout       xmlns:android="http://schemas.android.com/apk/res/android"       android:layout_height="fill_parent"       android:layout_width="fill_parent">       <edittext           android:id="@+id/edittext01"           android:hint="enter text..."           android:layout_alignparentleft="true"           android:layout_width="match_parent"           android:layout_height="wrap_content"></edittext>       <button           android:id="@+id/button01"           android:text="press here!"           android:layout_width="wrap_content"       android:layout_torightof="@+id/edittext01"         android:layout_height="wrap_content"></button>   </relativelayout

android:layout_toleftof="@+id/button01" force right bound of edittext align left side of button , android ignores match_parent width forcing width fill left parent side right side of button.

android:layout_torightof="@+id/edittext01" force left bound of button align right side of edittext, since edittext match_parent width rights side aligned right side of parent view , android force button off screen.


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