Develop Reference

Transparent overlay in imageview in a tablelayout

I have a tablelayout with two rows each consisting of two imageview. I want to achieve result as below. I have tried few solutions mentioned in stackoverflow but somehow I have not found a way to achieve this. Each imageview is looks as below
<ImageView
android:id="#+id/imageViewY"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#drawable/cell_border"
android:clickable="true"
android:padding="2dp"
android:src="#drawable/letter_y" />
If you have any idea or solution to achieve this , i would like to request for your help. Thanks in advance.

use transparent color #11000000 as background of imageview
Here 11 is a Transparency Value of color 000000(means Black color)
and you can set alpha programatically or through xml for setting transparency
now If Set Alpha You said deprecated and don't want to take risk by using this then just set color of image view
i just explain how to handle 1st imageview's click
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v==imageview1){
//set lighter dark layer on click of image 1 and reset fully transparent layer on other image
imageview1.setBackgroundColor(Color.parseColor("#11000000"));
imageview2.setBackgroundColor(Color.parseColor("#00000000"));
imageview3.setBackgroundColor(Color.parseColor("#00000000"));
imageview4.setBackgroundColor(Color.parseColor("#00000000"));
}
}

Android: ListView xml layout not showing background image when scrolled

I have an Activity with a ListView, I set the background image to the view programatically.
When I scroll down my list, the background image turns to white ( because my theme is Theme.Light.NoTitleBar).
How can I make it scroll with the blue background intact?
If the above point works, how can I change the text color of ListView to white instead of black?
Normal ListView
Scrolling ListView
Pressing ListView item

Use the attribute android:cacheColorHint="#000000" in ListView Tag
Regarding make TextView's color black or white, you can refer here to make a custom TextView for your ListView row, The extra work you have to do is just add another attribut inside TextView tag like this
android:textColor="#FFF" //or #FFFFFF for white

add a attribute on the ListView Tag
android:cacheColorHint="#00000000"// setting as a transparent color

This is due because of an optimization. To remove this, just set the cacheColorHint of your listView to transparent, like this: android:cacheColorHint="#00000000"
Full post here: http://android-developers.blogspot.fr/2009/01/why-is-my-list-black-android.html

You can Wrap that ListView inside on LinearLayout having same background and then remove ListView's Background that should work fine. :)

Please check this answer. I have got the same issue and it is fixed by putting view = null in adapter side.

Android - making ExpandableListView elements have transparent backgrounds

I have an expandable list view I am using in one xml file which has a background. Upon loading, it looks fine, but sometimes while browsing the background of each list element shows infront of the background of the base view.
The list elements are defined in their own xml file.
Can I make the list elements backgrounds become transparent somehow, so that the background of the baseview is shown all the time instead, even when expanding/collapsing the view?

The answer can be found here :)
http://developer.android.com/resources/articles/listview-backgrounds.html
Use
android:cacheColorHint="#00000000"
On your list

Set this all four properties for expandablelistview. It worked for me....
android:childDivider="#android:color/transparent"
android:listSelector="#android:color/transparent"
android:cacheColorHint="#android:color/transparent"
android:background="#android:color/transparent"
Or programmatically set expandablelistview transperent:
ExpListview SecondLevelexplv = new ExpListview(mContext);
SecondLevelexplv.setBackgroundColor(Color.TRANSPARENT);
SecondLevelexplv.setCacheColorHint(Color.TRANSPARENT);
SecondLevelexplv.setDivider(new ColorDrawable(Color.TRANSPARENT));
SecondLevelexplv.setSelector(android.R.color.transparent);

backgrounds in listview

i have a listview with a bunch of items in it, each item has its own background, the problem is that if i only have one item in a list, the rest of the "empty" slots of the list is black. I tried applying a background around the listview and also on the view that sorrounds it (relativeView) and i get a strange margin around the whole list like the picture at the bottom. The question i have is, how can i remove the actual "borders" around the list so it still fills upp its parent ? .

Remove any padding you may have used in your XML layout file.

Try putting in the following code in the listview's layout:
android:cacheColorHint="#00000000"

Change your listview height like this android:layout_height="fill_parent"

use android:fadingEdge="none" in listview in layout

Scrolling a ListView changes everything from White to Black [duplicate]

This question already has answers here:
Background ListView becomes black when scrolling
(12 answers)
Closed 9 years ago.
I have a custom list view and I want the background of the list to be white, so I do something like this which works great.
listView = (ListView) this.findViewById(R.id.listview);
listView.setBackgroundColor(Color.WHITE);
The problem is when you scroll the list the background of all the list items changes to black, which looks horrible.
I tried in my list view setting the background color to white. When I inflate the view I also tried setting the background color to white:
view.setBackgroundColor(Color.WHITE);
Both of these fix the problem of the scrolling background color, but now the item doesn't appear to be clickable even though it is. What I mean by that is the onClick still works fine, but the background doesn't flash to orange to let the user know he clicked it.
How can I have a white background in a list view, that stays white while scrolling, and does the normal list acitvity orange click background?
Thanks!

The solution is very simple, you also need to set the cache color hint to white: setCacheColorHint(Color.WHITE). You don't need to change the list items' background color.

ListView lv = getListView();
setCacheColorHint(0);
Set the cache color hint to zero.

Solution is very simple, you also need to set the cache color hint to black in xml.
android:cacheColorHint="#000000"

Android attempts to improve the performance of ListView scrolling by caching layout information. If you have long scrolling lists of data you should also set the the android:cacheColorHint property on the ListView declaration in the Activity’s AXML definition (to the same color value as your custom row layout’s background). Failure to include this hint could result in a ‘flicker’ as the user scrolls through a list with custom row background colors.
So give the same color to the listitem's background and android:cacheColorHint.you can refer below code.
In my Adapter layout I gave as
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ADAPTER_CONTAINER_PRIMARY"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FAFAEE"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:gravity="center">
.....
And in the List view
<ListView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/LIST_GRID_LIST_INSTANCES"
android:focusableInTouchMode="true"
android:smoothScrollbar="true"
android:divider="#drawable/Gray"
android:dividerHeight="0.05dp"
android:cacheColorHint="#FAFAEE"
android:background="#drawable/round"/>

If your ListView is drawn atop a more complex background -- say, a bitmap or gradient -- then you may need to disable the scroll cache entirely. I ended up setting android:scrollingCache="false" on my ListView to resolve this issue.
http://developer.android.com/reference/android/widget/AbsListView.html#attr_android:scrollingCache