Android :: Android -change Button Background Programmatically
Jun 22, 2010
I have this resource file for colors
CODE:..................
And this method that gets called when the user clicks one of four colored Buttons
CODE:.................
The problem is the color of the Button doesn't change when pressed. I stepped with a debugger and it actually reaches the right points in the method, so that's not an issue. I think the problem is in pressedBtn.setBackgroundResource(newColor) but I can't understand why. Anyway, if you have a better solution to change a button color when pressed and, after a half second, change back to original color, let me know.
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Oct 6, 2010
I can't seem to find anywhere a way to programmatically change the the alignment of the button.
In the XML it is simply layout_gravity="Center" or something.
How do we do this in the code?
LayoutParams do not seem to cater for this.
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Oct 7, 2010
I'm unable to change the layout_gravity of a Button programmatically, does anybody know how to do this?The gravity attribute is easily changed using Button.gravity(), Ie it changes the gravity of the text inside the button I cannot change the gravity of the button itself. I also cannot seem to find this in any of the layout params contructors.
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Oct 30, 2010
How to set tablelayout row background color programatically.
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Jul 22, 2010
I am reading in some data from a REST api and need to generate some buttons based on the information the app receives.
Because I need the same buttons in many Activity screens I have extended Button to make a RachelButton and I set it up in the constructor.
CODE:...............
Then an example of the resource I am using to generate a colored button is this:
CODE:.............
As you can see in the code I am setting the text color and I'm sure that this color exists as a resource.
But setting the text color like this has no effect at all, the text color on the button seems to be a darker shade of the button's background color.
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May 12, 2009
Are there api to support go to back Programmatically i.e same effect as the back button of the phone.
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Apr 2, 2010
Im using an inflater inside an adapter for my listview. I need to add in a different button depending in the state of the data for each row, so Im thinking I need to do this programmatically, but how do I make sure its inserted into the correct place inside the layout?
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May 21, 2010
I have the following linear layout. What I don't understand is if I set the background to another image, the padding information are reset. Is there a way to prevent this?
<LinearLayout android:id="@+id/aPanel"
android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:background="@drawable/bkground"
android:paddingLeft="15dp" android:paddingRight="15dp">
<!-- some children here -->
</LinearLayout>
I see the position of the children get shifted when I change the backround drawable of the linearlayout 'aPanel'.
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Jun 15, 2009
Can we change the apn settings programmatically?
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Oct 5, 2010
I'm trying to change the e-mail address info of some contacts programmatically.
I have the following contact: Name: John Patrick Phone: 1234567890 ID: 15 E-mail: j...@univ.edu (The type is work e-mail)
I'm using the following code to change the e-mail address programmatically:
CODE:..........................
My understanding is that the code above should run successfully. However, when I excecute this code, the e-mail information in my contact doesn't get updated.
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Nov 22, 2010
I already have the button:
CODE:..............
I have the "empty" icon show on the button when the program starts.
What I want to do is change the button's icon automatically from my code (low, medium and high) based on user inputs
I tried:
Button myButton = ..........
But I cant figure out
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Oct 17, 2010
I as i know we can change the installing location With android SDK , using USB cable But i wanna know is it possible to change the installing location Programmatically? is it yes how?
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Jun 8, 2010
I have an image set as my background and when it is vertical, the image looks fine. However, when the orentation is changed, the image get streched out. If there a way that I can change the image based on the orentation of the device?
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Feb 19, 2010
I'm looking for a way to access the settings for the browser and mms apps programmatically. I know that there are APIs for browser content providers to add bookmarks and add search strings to the db. But is there a way to access any of the options such as text size, default zoom, etc. I've looked at the source but can't seem to find a way, as the preferences file is private and there being no content providers for these settings.
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Jul 16, 2010
What's the best way to change width/height of a widget (I mean, a UI widget, subclass of android.view.View) programmatically?
Doing something like this works, but it doesn't seem quite right:
CODE:....................
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Dec 9, 2009
I've prepared custom component based on LinearLayout. Whole component is defined in XML. Currently to use it you have to write:
<com.xxx.android.components.TopMenu
android:layout_width="fill_parent"
android:layout_height="44dp" />
Is it possible to set width and height in the java constructor? So it would be possible to write just:
<com.xxx.android.components.TopMenu />
I've tried to modify and set LayoutParams, but it didn't work for me.
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Aug 9, 2010
If you use an AbsoluteLayout (I know that it is deprecated, but it was the only way to solve my problem ) you can give the childViews the tag "android:layout_x" and "android:layout_y" to set their absolute position within the AbsoluteLayout.
However I dont want to set these informationen in the xml, because I only know them at runtime. So how can I set these parameters at runtime programmatically? I dont see any method on the View like view.setLayoutX(int x) or something.
Here is my XML, which works fine, when I set the layout_x and layout_y values. code...
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May 25, 2010
I would like change the width of a Horizontal Progressbar programmatically (initial size is set in XML using RelativeLayout...but I would like to dynamically change it based on certain values).
I have tried setMinimumWidth(50) in my code, but that did not make a difference. I have also tried setting 'android:layout_width="wrap_content", but that did not work either.
Here is my XML:
CODE:.......................
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Jun 23, 2010
I want to change the contrast and intensity of my androind phone display programmatically, how can i do it?
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Jun 17, 2010
I have defined an List View in xml as below
Code...
And i need to re-define the layout margin upon some result in my programe ,how i can achieve this
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Oct 7, 2011
public class SamActivity extends Activity
{
private Paint mPaint;
private MaskFilter mEmboss;
private MaskFilter mBlur;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
[code].....
This is my code.In this i draw a line over the image.Now i want to know how to create button programatically?
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Feb 27, 2010
How can I set button background color at run time?
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Oct 4, 2009
I have a question about setting the background color for buttons the entire button turns into a red rectangle. Is there actually a workaround to achieve this?Also what can I do to revert back to the default color of the button (the typical plain greysh background).
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Sep 17, 2010
i want to change the background-color of a button using a selector-xml-file. My approach is basically the one from the example at the bottom this page: http://developer.android.com/guide/topics/resources/color-list-resource.html.But if I try it with android:textColor as described in the above link it works fine. So it has to be the background issue. I don't want to create a 9patch-png if it's not necessary (basically i just need a "clickable" rectangle so i use a button with a colored background)
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Nov 7, 2010
I have a button defined in my XML file. The button works exactly like you would expect...that is until I add the line at the bottom (android:background="drawable/leftarrow1"). Then the button is no longer click able in the activity, but the new background shows up like I want. What gives?
<Button
android:id="@+id/switch_left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_center Vertical="true"
android:background="@drawable/leftarrow1" />
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Sep 21, 2010
How can I change the background of an ordinary Button into some other image(not just a color change)? ->And about Nine patch bitmap, how to use them, how to create such bitmaps and how can i convert my image into a StateListDrawable, so that I can apply it as my Button background?
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Jul 15, 2010
I created a button and set the background image on it.How can I set the text below the graphic to sit on the bottom but not on top of the graphic?
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Feb 16, 2010
I need button that has a replicated background pattern and normal button text on top - how to specify this in layout XML?
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Jun 10, 2010
For bitmap image..this code is not working
CODE:...............
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Jul 14, 2010
How can I set the Background for a button to a transparent Color, like transparent Blue for eg, instead of a solid blue? When I use button.setBackgroundColor(Color.BLUE) it sets it to a solid blue.
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