I am all for reusing views in listview. I always set visibility, contents, witdth etc. of all controls again in getView Unfortunately it seems ListView fails to recalculate height.
Picture one shows the initial item showed:
Picture two shows how item one is rendered after we scrolled away and back into it
The background linearlayout height (the black area) made me think that in picture two, Android is reusing a view that just showed a much heigher item (e.g. the second item). But why does it not recalibrate/reset/recalclulate itself (it is in "wrap_content" mode in its XML) when reused as view for the first item which content (text + image) is not as heigh?
In truth I am not sure what is happening. The problem only manifests itself if I have image in the view. I have tried organize the bitmap/image loading in different ways (sample code underneath) with different things commented out, but that does not seem to make much difference. I am really at a loss here as to the reason.
override_listitem_news.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dip"
android:background="@android:color/black"
>
<TextView
android:id="@+id/listitem_news_label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textStyle="bold"
android:textSize="22sp"
android:padding="5dip"
android:text="@string/newsItemTitle"/>
<TextView
android:id="@+id/listitem_news_date"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textStyle="italic"
android:textSize="15sp"
android:padding="5dip"
android:text="@string/newsItemDate"/>
<TextView
android:id="@+id/listitem_news_content"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textStyle="normal"
android:textSize="15sp"
android:padding="5dip"
android:autoLink="web"
android:text="@string/newsItemDesc"
android:background="@android:color/darker_gray"
/>
<ImageView
android:id="@+id/listitem_news_icon"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
Here is code where I load image in getView
ViewTreeObserver vto = image.getViewTreeObserver();
vto.addOnGlobalLayoutListener(
new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
image.getViewTreeObserver().removeGlobalOnLayoutListener(this);
image.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
SharedCode.sharedUtilScaleImage_Width(image);
}
}
);
image.setTag(data.image_file_name + data.image_file_url);
Bitmap bit = null;
bit = SharedCode.sharedGetFileFromOffline(thisActivityContext, "news", data.image_file_name, MyGetKindOfFile.ImageAsBitmap).bitmap;
if (bit != null) {
image.setImageBitmap(bit);
image.setVisibility(View.VISIBLE);
}
else {
image.setImageBitmap(null);
image.setVisibility(View.GONE);
}
image.setPadding(0, 0, 0, 0);
image.setBackgroundColor(data.backgroundColorInt);