android - Custom view is measured incorrectly when placed with another view elements -


i created custom view want place in relativelayout button under it. problem i'm having if put button under custom view using android:layout_below="@id/customview", customview takes full height, there's no space on screen place button, it's placed below bottom border of screen , therefore invisible. size receive @ last call of customview's onmeasure() method should calculated, i.e. view sizes should taken account, seems in case height of button not.

here's layout:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/darkbluebackground" tools:context="com.example.timepickeractivity">  <com.example.timepicker     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingleft="5dp"     android:paddingright="20dp"     android:paddingtop="5dp"     android:paddingbottom="5dp"     android:id="@+id/picker"/>  <button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_below="@id/picker"     android:layout_weight="1"     android:id="@+id/okbutton"     android:text="ok"/>

this final sizes measured onmeasure():

07-26 00:24:39.551 19930-19930/com.example d/tag: width = 720 height = 1230

at same time if put button above customview looks pretty fine, onmeasure() receives correct height customview, there's space button.

here's layout case:

<button     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_weight="1"     android:id="@+id/okbutton"     android:text="ok"/>  <com.example.timepicker     android:layout_width="match_parent"     android:layout_height="match_parent"     android:layout_below="@id/okbutton"     android:paddingleft="5dp"     android:paddingright="20dp"     android:paddingtop="5dp"     android:paddingbottom="5dp"     android:id="@+id/picker"/>

final size onmeasure different: 07-26 00:24:39.551 19930-19930/com.example d/tag: width = 720 height = 1134

why custom view (timepicker) measured correctly in 1 case , isn't in another?

try setting android:layout_height=wrap_content" on com.example.timepicker view. setting height match_parent causes view fill parent's height, leaving no room button.


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