Develop Reference

Button raised effect not working when background image attached

I am creating a simple button as follows :
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/edSearch"
android:id="#+id/btnSearch"
android:layout_marginTop="30dp"
android:drawableTop="#drawable/ic_action_search"
android:textSize="16sp"
android:text="Search"
android:background="#color/md_green_500"
android:textColor="#fff"
/>
Now, when i try add any image in background like :android:background="#drawable/img123" then button raise effect does not work. is there any way i can achieve raise effect with background image ?

You can create a selector drawable for this. You need to provide 3 different images for this so that the button can toggle those images as per the state.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="false"
android:state_pressed="false"
android:drawable="#drawable/image_normal" />
<item android:state_focused="false"
android:state_pressed="true"
android:drawable="#drawable/image_pressed" />
<item android:state_focused="true"
android:state_pressed="false"
android:drawable="#drawable/image_focused" />
</selector>
Also inspite of that you can use ImageButton which will keep your image in center of button and the effects will be default as per operating system.

image of button not changing when pressed

I my app i have many buttons,what i want is that when user selects particular button,its background should change so that user knows which button is selected.So for this i have used selectors.But when ever i run my app the event on button click works fine but the button image doesnt change
Selector
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/people_1" android:state_selected="true"></item>
<item android:drawable="#drawable/people_1" android:state_active="true"></item>
<item android:drawable="#drawable/places_1" android:state_focused="true"></item>
<item android:drawable="#drawable/hotel_icon"></item>
</selector>
Xml where i used the selector
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/hotel"
android:layout_weight="1"
android:id="#+id/home" />

I solved it,the only thing missing was
<item android:drawable="#drawable/selected" android:state_pressed="true" />

Setting background on ImageButton doesn't work

I have an ImageButton and I wanted to be able to see a color when I clicked on it. I added a background, and used the same listselector I use for all my listviews, but it doesn't show anything when I click the ImageButton.
Here is the ImageButton xml
<ImageButton
android:id="#+id/button_biomes"
android:layout_width="fill_parent"
android:layout_height="100dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="#drawable/biome"
android:background="#drawable/listselector"/>
And this is the listselector drawable:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_enabled="true"
android:state_pressed="true" android:drawable="#color/actionbar" />
<item android:state_enabled="true"
android:state_focused="true" android:drawable="#color/actionbar" />
<item
android:drawable="#color/android:transparent" />
</selector>
If anyone could help me It'd be greatly appreciated. Thanks!

It is possible that your image takes up entire space and doesn't show the background. Here, image and background are two different things, so do not expect the src image to be transparent.

Android custom image on/off button

I want to create custom ImageButton, but to work like on/ off button. On click on button image to be changed to pressed(until another button is pressed)!
On picture This month button is on , This year off .
How can I create button like this?
Do I need to use and how ?
Thanks

Use the selector XML tag to help you achieve this. Here, see this link about StateListDrawables. So their example shows
a button.xml file:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:drawable="#drawable/button_pressed" /> <!-- pressed -->
<item android:state_focused="true"
android:drawable="#drawable/button_focused" /> <!-- focused -->
<item android:drawable="#drawable/button_normal" /> <!-- default -->
</selector>
and then links an actual button to that xml:
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:background="#drawable/button" />

Sergey Glotov and wheaties thanks for your help
For every ImageButton I create separate selectors for default and pressed state, I create ImageButton in xml:
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/month_button"
android:id="#+id/btnMonth"
android:onClick=ButonMonthClick"/>
And onClick event for all ImageButton I change background image programmatically:
btnWeek.setBackgroundResource(R.drawable.week_pressed);
btnMonth.setBackgroundResource(R.drawable.month_default);
Thant solve my problem!

How can I make a home widget behave like a launcher icon?

I have a widget that acts as a launcher on the home screen.
How can I make it behave like a launcher icon?
I use this layout for portrait:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:background="#drawable/widget_background_selector"
android:focusable="true"
android:layout_width="74dip"
android:layout_height="79dip"
android:layout_marginLeft="3dip"
android:layout_marginTop="14dip">
<ImageView android:id="#android:id/background"
android:layout_width="72dip"
android:layout_height="72dip"
android:layout_marginLeft="1dip"
android:layout_marginTop="4dip" />
</RelativeLayout>
</RelativeLayout>
And this is the background selector:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="#drawable/widget_background_pressed" />
<item android:state_window_focused="true" android:state_focused="true" android:drawable="#drawable/widget_background_focused" />
<item android:state_window_focused="false" android:state_focused="true" android:drawable="#android:color/transparent" />
</selector>
This way if I use the DPAD the widget is focusable but the click doesn't work.
The touch still works but the widget is not displayed as focused.
Any idea what I do wrong?

What about the code that registers your click events? Can you show that?
I don't see any id attribute for your RelativeLayout, so my stab is that you haven't even registered an OnClickPendingIntent for the RelativeLayout for which you want to handle click events. And perhaps you have created an intent for the ImageView, which is receiving the touch events, but not the dpad click events, because it's parent (the RelativeLayout) has requested focus (and has no click event-handler).