ListView measurering causes constant getView(..) requests, slowing down the device

The issue described here was encountered on 3.0 as well as 3.1 on an Acer Iconia A500. The following layout is used in a Fragment (not ListFragment). Somehow it causes a ListView, added to fragment_swipeview_lr_leftview_body (and fragment_swipeview_lr_rightview_body respectively), to be measured over and over again, thus refreshing its content more often then required and hence significantly slowing down the device.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/fragment_swipeview_lr_mainlayout" android:layout_height="fill_parent" android:layout_width="fill_parent">
    <RelativeLayout android:id="@+id/fragment_swipeview_lr_leftview"
        android:layout_height="fill_parent" android:layout_width="wrap_content"
        android:layout_marginRight="5dip">
        <RelativeLayout android:layout_height="wrap_content"
            android:id="@+id/fragment_swipeview_lr_leftview_header"
            android:layout_alignParentTop="true" android:layout_centerHorizontal="true"
            android:background="@drawable/fragment_swipeview_header_background_left"
       开发者_运维技巧     android:layout_width="wrap_content" android:layout_alignLeft="@+id/fragment_swipeview_lr_leftview_body"
            android:layout_alignRight="@+id/fragment_swipeview_lr_leftview_body">
            <TextView android:layout_width="wrap_content"
                android:layout_height="wrap_content" android:id="@+id/fragment_swipeview_vt_leftview_headertext"
                android:text="Left Heading" android:textAppearance="@style/style_text_swipeview_header"
                android:layout_marginLeft="10dip"></TextView>
        </RelativeLayout>
        <RelativeLayout android:background="@drawable/fragment_swipeview_body_background_left"
            android:layout_height="fill_parent" android:layout_below="@id/fragment_swipeview_lr_leftview_header"
            android:layout_width="wrap_content" android:id="@+id/fragment_swipeview_lr_leftview_body"></RelativeLayout>
    </RelativeLayout>
    <RelativeLayout android:layout_height="fill_parent"
        android:layout_toRightOf="@+id/fragment_swipeview_lr_leftview"
        android:layout_width="wrap_content" android:id="@+id/fragment_swipeview_lr_rightview">
        <RelativeLayout android:layout_height="wrap_content"
            android:layout_width="wrap_content" android:id="@+id/fragment_swipeview_lr_header_body_wrapper"
            android:layout_toRightOf="@+id/fragment_swipeview_vi_rightview_shadow">
            <RelativeLayout android:layout_alignLeft="@+id/fragment_swipeview_lr_rightview_body"
                android:layout_alignRight="@+id/fragment_swipeview_lr_rightview_body"
                android:layout_height="wrap_content" android:layout_centerHorizontal="true"
                android:layout_width="wrap_content" android:layout_alignParentTop="true"
                android:id="@+id/fragment_swipeview_lr_rightview_header"
                android:background="@drawable/fragment_swipeview_header_background_right">
                <TextView android:text="Right Heading" android:layout_height="wrap_content"
                    android:layout_marginLeft="10dip" android:textAppearance="@style/style_text_swipeview_header"
                    android:layout_width="wrap_content" android:id="@+id/fragment_swipeview_vt_rightview_headertext"></TextView>
            </RelativeLayout>
            <RelativeLayout android:layout_height="fill_parent"
                android:layout_width="wrap_content" android:layout_below="@+id/fragment_swipeview_lr_rightview_header"
                android:id="@+id/fragment_swipeview_lr_rightview_body"
                android:background="@drawable/fragment_swipeview_body_background_right"></RelativeLayout>
        </RelativeLayout>
        <ImageView android:background="@drawable/general_shadow_left"
            android:layout_width="wrap_content" android:layout_height="fill_parent"
            android:layout_alignParentLeft="true"
            android:id="@+id/fragment_swipeview_vi_rightview_shadow"
            android:visibility="gone"></ImageView>
    </RelativeLayout>
</RelativeLayout>

The ListView is added using the following code (tried using explicit LayoutParameters as well).

public void addViewToLeftContentLayout(View v) { 
    leftContent.addView(v); // leftcontent == fragment_swipeview_lr_leftview_body
    fragment_swipeview_lr_leftview_body 
}

Here is the stacktrace representing individual measurement updates:

AdapterIngredientList.getView(int, View, ViewGroup) line: 43 
ListView(AbsListView).obtainView(int, boolean[]) line: 1970 
ListView.measureHeightOfChildren(int, int, int, int, int) line: 1228 
ListView.onMeasure(int, int) line: 1139 
ListView(View).measure(int, int) line: 10828 
RelativeLayout.measureChild(View, RelativeLayout$LayoutParams, int, 
int) line: 566 
RelativeLayout.onMeasure(int, int) line: 381 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
RelativeLayout.measureChildHorizontal(View, RelativeLayout 
$LayoutParams, int, int) line: 581 
RelativeLayout.onMeasure(int, int) line: 365 
RelativeLayout(View).measure(int, int) line: 10828 
LinearLayout(ViewGroup).measureChildWithMargins(View, int, int, int, 
int) line: 4351 
LinearLayout.measureChildBeforeLayout(View, int, int, int, int, int) 
line: 1284 
LinearLayout.measureVertical(int, int) line: 613 
LinearLayout.onMeasure(int, int) line: 519 
LinearLayout(View).measure(int, int) line: 10828 
FrameLayout(ViewGroup).measureChildWithMargins(View, int, int, int, 
int) line: 4351 
FrameLayout.onMeasure(int, int) line: 267 
FrameLayout(View).measure(int, int) line: 10828 
LinearLayout.measureVertical(int, int) line: 764 
LinearLayout.onMeasure(int, int) line: 519 
LinearLayout(View).measure(int, int) line: 10828 
PhoneWindow$DecorView(ViewGroup).measureChildWithMargins(View, int, 
int, int, int) line: 4351 
PhoneWindow$DecorView(FrameLayout).onMeasure(int, int) line: 267 
PhoneWindow$DecorView.onMeasure(int, int) line: 1908 
PhoneWindow$DecorView(View).measure(int, int) line: 10828 
ViewRoot.performTraversals() line: 909 
ViewRoot.handleMessage(Message) line: 2003 
ViewRoot(Handler).dispatchMessage(Message) line: 99 
Looper.loop() line: 132 
ActivityThread.main(String[]) line: 4026 
Method.invokeNative(Object, Object[], Class, Class[], Class, int, 
boolean) line: not available [native method] 
Method.invoke(Object, Object...) line: 491 
ZygoteInit$MethodAndArgsCaller.run() line: 841 
ZygoteInit.main(String[]) line: 599 
NativeStart.main(String[]) line: not available [native method] 

any suggestions / workarounds would be appreciated. regards Patrick

I believe this is happening because you are using wrap_content for the layout width/height. It requires one call to get the measurements and then another to actually draw whatever it needs to. Try changing the layout to use fill_parent if possible.