I try to switch the background of Buttons if they are pressed. I build a Selector like the answer suggested here: Standard Android Button with a different color
Finally I want to put GradientDrawables inside, but for debugging purposes I just set a color, to check if it works.
Here is my Selector
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#color/red"/>
<item
android:state_focused="true"
android:drawable="#color/white"/>
<item
android:state_pressed="true"
android:drawable="#color/white"/>
</selector>
Unfortunatly this doesn't work. I set the Selector as Button background and only see them in red color. What Am I doing wrong (Build Target 2.1)
put this at the end
item android:drawable="#color/red"
i mean as the third option, it will work.
android checks the xml conditions from the start, the first tag doesn't have any condition, so it will always pick red, so you have put conditions first and then the default one.
here is the code I use, and it works really well.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/button_clicked"
android:state_pressed="true" android:state_enabled="true" />
<item android:drawable="#drawable/button" android:state_enabled="true" />
</selector>
here I use two images I made using photoshop as a background
the first is button_clicked and the second is button
copy it and change use your own resources.
hope I could help :)
Related
I've got a group of radio buttons, and I want to set the button's background to a solid color when checked. I created a drawable resource, using a selector and item def's like:
<item android:state_checked="true" android:state_pressed="false"
android:drawable="#color/app_tint"/>
with several variations while trying to get it to work. In the layout containing the buttons, I've tried setting both button and background properties (not at the same time, just one or the other in testing) like:
android1:background="#drawable/radio_state"
OR
android1:button="#drawable/radio_state"
I've read several posts, and I feel I'm close, just missing something to get it done. Thanks.
Here's one we did for an app:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/ic_bcnav_ebilling_focus"
android:state_checked="true" />
<item android:drawable="#drawable/ic_bcnav_ebilling_focus"
android:state_selected="true" />
<item android:drawable="#drawable/ic_bcnav_ebilling_focus"
android:state_pressed="true" />
<item android:drawable="#drawable/ic_bcnav_ebilling_focus"
android:state_focused="true" />
<item android:drawable="#drawable/ic_bcnav_ebilling" />
</selector>
Each state has a different drawable, although in this example, we don't really care about all states being very different - just focus=true get a highlighted drawable (it has "..._focus")
I make a custom toggle button in android, checked state and unchecked state are work fine with two image, now i want set disable image for disable state of toggle button. How i do that? Thanks!
This is my code
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_checked="false" android:drawable="#drawable/record_off" />
<item android:state_checked="true" android:drawable="#drawable/record_on" />
</selector>
Make these changes in your selector
<item android:drawable="#drawable/record_off" android:state_checked="false" android:state_enabled="true"/>
<item android:drawable="#drawable/record_on" android:state_checked="true" android:state_enabled="true"/>
<item android:drawable="#drawable/record_disabled" android:state_enabled="false"/>
I am using this: #drawable/record_disabled merely as an example. You can have your own name for the drawable which you will have to create just like you must have done with the ON and OFF buttons. ;-)
Note that I have added an android:state_enabled="true" attribute to all the items.
The simplest thing you can do in such cases, is go to the location where you have your SDK placed. Then choose the platform you are building for. Go to the data\res\drawable folder and look at how Google does it.
Since you are customizing a Toggle button, search for this: btn_toggle_holo_dark or btn_toggle_holo_light in the drawable folder.
I am using drawables to nicely style my buttons, and that works fine, except for the text color in the button.
I have defined a state_enabled="false" item in a selector and using setEnabled gives me the right button styles, but I have to jump through quite some loops to get the text color different. This code for example doesn't work (it shows no, or black, text when disabled, and darkgray when enabled):
public void setButtonsEnabled(boolean enable) {
btnAccept.setEnabled(enable);
btnDecline.setEnabled(enable);
int color = R.color.White;
if (!enable) {
color = R.color.DarkGray;
}
btnAccept.setTextColor(color);
btnDecline.setTextColor(color);
}
I found the solution.
The key lies in also setting the TextColor to a selector in res/colors:
android:textColor="#color/button_text"
android:background="#drawable/button_selector"
For the background selector I used this:
<?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="false" android:drawable="#drawable/btn_buddy_enabled"></item>
<item android:state_enabled="false" android:drawable="#drawable/btn_buddy_disabled"></item>
<item android:state_enabled="true" android:state_pressed="true" android:drawable="#drawable/btn_buddy_clicked"></item>
</selector>
And the textColor selector is this:
<?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="false" android:color="#color/White"></item>
<item android:state_enabled="false" android:color="#color/Gray"></item>
<item android:state_enabled="true" android:state_pressed="true" android:color="#color/White"></item>
</selector>
Simply calling setEnabled() will make everything work fine.
You are using the wrong value for the color. R.color.White returns the resource ID of the value, not the value itself. Try Color.WHITE, or getResources().getColor(R.color.White)
Have you checked out ColorStateLists? They are pretty awesome. So basically apply all those ideas of Drawable selectors to a set of colors.
Make a folder called [Your Project]/res/colors/ and then put an xml file in there called, button_color.xml (or whatever).
button_color.xml
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android"
>
<!-- Any Enabled button, gets White Text -->
<item
android:color="#color/White"
android:state_enabled="true" />
<!-- Buttons with any other state, get DarkGray Text -->
<item
android:color="#color/DarkGray"/>
</selector>
And then for your TextView, you can just do something like, mTextView.setTextColor(R.color.button_color); At that point there is no need for that if/else type of logic, the selector will do it for you. The selector gets rolled up into the color resource but the class it actually generates is called a ColorStateList in case you find it referenced in other documentation.
I made a layout that is just simply a textview that says "What do you want?", followed by a series of buttons underneath it.
All of the buttons can be clicked/touched, but when I scroll with the trackball, none of them become highlighted. I noticed, however, then when I disable the background colors on the buttons, I can see the orange box that shows that button's focus.
Is there any way I can visibly see the focus while still being able to have a background color on the buttons?
EDIT: Found the solution! This helped A LOT. Standard Android Button with a different color
Create a "selector" resource in your res/drawable. It can look something like this:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_selected="false"
android:state_pressed="false"
android:drawable="#color/white" />
<item
android:state_pressed="true"
android:drawable="#color/orange" />
<item
android:state_selected="true"
android:state_pressed="false"
android:drawable="#color/blue" />
</selector>
Then set the background of your button to be:
android:background="#drawable/your_selector"
Rather than applying a simple background color to buttons, try applying a ColorStateList instead.
To do so, define a new XML file at
/res/color/buttonstate.xml
and use code such as the following:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:color="# FOCUSED COLOR HERE"
android:state_focused="true" />
<item android:drawable="# DEFAULT COLOR HERE" />
</selector>
Notes:
You can definitely add more colors for more states, such as pressed, enabled, and certain other factors.
In the layout or code just reference R.color.buttonstate or #color/buttonstate (the XML's filename).
Make sure the default color is last. This is because it goes down the list and finds the first item that has all of the states the same as it. If you don't provide android:state_focused="false" for the default item and put it first, it will always display.
You can do a similar thing with drawables and
nine-patch drawables to make your own custom button styles.
Rather than just change the background color, consider using a 9-patch style. This is more work to begin, but you'll have much more control over your app's appearance.
Modify your Button layout to look something like this (the style line is the kicker):
<Button
style="#style/PushButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
Your styles.xml resource file then should contain a style similar to this:
<style name="PushButton">
<item name="android:background">#drawable/btn</item>
</style>
Then the btn.xml (put in in res/drawable) contents should look something like this:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/btn_pressed"
android:state_pressed="true" />
<item android:drawable="#drawable/btn_focused"
android:state_pressed="false"
android:state_focused="true" />
<item android:drawable="#drawable/btn_default"
android:state_focused="false"
android:state_pressed="false" />
You would then use some image editor to create files named btn_pressed.9.png, btn_focused.9.png, and btn_default.9.png. Drop these files in your res/drawable.
A good starting point is the Google IO app (I lifted the code examples from it). Just grab the png files and modify them to match your desired style.
Keep in mind you can put all sorts of stuff in the style now, like text size, height and width.
By default when button is clicked something like orange color will surround the button for short time, that indicates buttons is clicked. But this feature is not working when button contains background image. This is happening in list view too.why ? Any Ideas? TIA
I used setBackgroundColor(Color.BLUE); But here the color is applied and not gone...
You need to use a selector as your background resource :
<?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" />
<item android:state_focused="true" android:drawable="#drawable/button_focus" />
<item android:drawable="#drawable/button_normal" />
</selector>
This selector makes use of 3 separate drawables to change the image of the button , you may use the same image for pressed and focuses.
You need to put this XML into your drawables directory and use it as a background for your button.
For another solution refer : Standard Android Button with a different color
i too had the same problem. so instead of setting the background color,i included three images of button in three different colors , so based on state focused,pressed,default the respective image will replace the other. and it looks like change in the color of the button.
**<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="#drawable/c2"
android:state_pressed="true" />
<item android:drawable="#drawable/c1"
android:state_focused="true" />
<item android:drawable="#drawable/c1" />
</selector>**
above is the content of the xml file,which must be assigned to the background of the respective button
android:background="#drawable/drawable_button
hope this might be helpful for you