Android :: Writing A Custom Button?

Feb 10, 2009

I am writing a custom button.

In the android button, I can customize my button like this:

CODE:......

And in the Button.java source code, it gets the value like that: In TextView.java:

CODE:......

My question is if I need to add a new value in the customization for my button.

CODE:....

How can I get 'myattribute' in my class for my custom button?

Android :: writing a custom button?


Android :: Writing Custom Linear Layout

Jul 26, 2010

I have a custom layout that draws a transparent rounded rectangle beneath its children. The problem is when I try to add it to my xml file, it doesn't show up. Also, when I try to add parameters to it (i.e. android:layout_width) the popup shows that none of them are available. The same thing happens to any child views I add. public class RoundRectLayout extends LinearLayout
{ private RectF shape;public RoundRectLayout(Context context)
{super(context);
LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.settings, this);
shape = new RectF();
}public RoundRectLayout(Context context, AttributeSet attrs)
{ super(context, attrs);
LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.settings, this);
shape = new RectF();
} @Override
protected void onSizeChanged(int w, int h, int oldw, int oldh)
{shape = new RectF(0, 0, w - 5, h - 5);
super.onSizeChanged(w, h, oldw, oldh);
}@Override
protected void dispatchDraw(Canvas canvas)
Paint temp = new Paint();
temp.setAlpha(125);
canvas.drawRoundRect(shape, 10f, 10f, temp);
super.dispatchDraw(canvas);

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Android :: Writing Custom Homescreen / Launcher

Jun 11, 2009

I'm interesting in writing a custom homescreen and launcher. By launcher, i mean the list of apps that appear when you push the menu button from the homescreen.

Are these two different native applications (homescreen and launcher)? Or is the menu that pops up part of the homescreen application.

Further, It there some Intent I could declare in my app that would instruct android to load my launcher / homescreen app instead of the native one, or would this require me to reimplement from source and build a custom platform?

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Android :: Android - Writing Custom (Compound) Component

Sep 25, 2009

The Android app I'm currently developing has a main activity that has grown quite large. This is mainly because it contains a TabWidget with 3 tabs. Each tab has quite a few components. The activity has to control of all those components at once. So I think you can imagine that this Activity has like 20 fields (a field for almost every component). Also it contains a lot of logic (click listeners, logic to fill lists, etc). What I normally do in component based frameworks is to split everything up into custom components. Each custom component would then have a clear responsibility. It would contain it's own set of components and all other logic related to that component.

I tried to figure out how this can be done, and I found something in the Android documentation what they like to call a "Compound Control".
(See http://developer.android.com/guide/topics/ui/custom-components.html and scroll to the "Compound Controls" section) I would like to create such a component based on an XML file defining the view structure.

In the documentation it says:
Note that just like with an Activity, you can use either the declarative (XML-based) approach to creating the contained components, or you can nest them programmatically from your code. Well, that's good news! The XML-based approach is exactly what I want! But it doesn't say how to do it, except that it is "like with an Activity". But what I do in an Activity is call setContentView(...) to inflate the views from XML. That method is not available if you for example subclass LinearLayout. So I tried to inflate the XML manually like this:

public class MyCompoundComponent extends LinearLayout {
public MyCompoundComponent(Context context, AttributeSet attributeSet) {
super(context, attributeSet);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.my_layout, this);
} }

This works, except for the fact that the XML I'm loading has LinearLayout declared as the root element. This results in the inflated LinearLayout being a child of MyCompoundComponent which itself already is a LinearLayout!! So now we have a redundant LinearLayout in between MyCompoundComponent and the views it actually needs. Can somebody please provide me with a better way to approach this, avoiding having a redundant LinearLayout instantiated?

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Android :: Button With Custom XML Layout

Feb 25, 2010

Is it possible to create a button with a custom xml layout? Now I want to use this on a button. Anyone know how I can do this? I was thinking if I had Button.java file that extended Button. And then setView( R. layout. mylayout.xml); but that was to easy, and it clearly not working

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Android :: Button In Custom View?

Apr 5, 2009

I'm trying to create a button in a custom view that I've created. I'm looping through an XML document and drawing certain things. I want to be able to also create buttons to go in certain locations depending on the xml data. I'd like to do it in the view because I want to be able to call invalidate() on my view to redraw things and replace the buttons when new xml data is available.

The problem is that I put my code in the view class, the activity crashes because the button is "null".

Here is a subset of my code:

CODE:............

I know this code works for creating buttons because I can put it in my activity class and it works just fine. Any suggestions? I thought about relocating the button in the activity, but I can't figure out how to do this when new data is available.

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Android :: How To Add Button Widget To Custom ImageView?

Apr 25, 2009

I am trying to add a button to a custom imageview. I have created a custom view to display an image to the screen, now i wanted to add a custom button on this veiw and display a layout in onClick. The following is my custom view.

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Android :: How To Create Custom Button Widget

Jun 17, 2009

I would like to create a button with circular or rectangular background, text and an image below or above the text.I would like to create a CustomButton object with methods setText() and setImage() which would change the button text and image and place multiple CustomButtons into main layout.Does anyone know how to create a custom layout, place it into another layout(main) and modify its elements from the activity which is bound to main layout?

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Android :: Want To Create Custom Circular Button / How To Do

Jun 7, 2010

I am trying to create one custom button which is circular and when i click that button i want that button FOCUS and COLOR change and i don't know how to do exactly so any one can help me or show me that code how to do?

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Android :: Custom Button Has Missing Text

Sep 8, 2010

I am trying to make a custom button, having two 9patch files, one for normal state and one for status.

First I tried with a simple 9patch background and the result is fine:

CODE:...................

I get a button with a image and a text bellow it. Everything with the main_button_background underneath

I create a new xml file (main_menu_button.xml) with the following content

CODE:................

The button becomes:

CODE:...............

Now the text isn't displayed, only the background and the imgsomeimage.

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Android :: Create A Custom Button Field?

Dec 31, 2009

I want to create a custom field on which I can place more than one line of text as well as images.
And the field can be used like a button(onclick event etc.)

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Android :: How To Apply Frame Animation To Custom Button?

Aug 6, 2010

Does anyone know if it is possible to apply a frame animation (using an AnimationDrawable) onto a custom button or a toast view? I have posted these questions on Stackoverflow but have received no responses and very few views so I thought perhaps posting to this forum would be a better route. Let me know if this "double posting" is bad form.

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Android :: Use Default Highlight Colors In Custom Button

Sep 10, 2010

I want to use a Button in my android app but I want to customize how it looks. However, I want the highlight and selected colors of the button to be the same as the default colors (i.e. the dark and light orange gradients, or whatever the theme color supplies).Is there anyway to get the default highlight/selected drawables and to use that as the fill for my buttons on the selected and highlighted states?

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Android :: Button On Custom Dialog Not Responding To Click Events

Oct 12, 2010

I created a custom dialog that extends Dialog. One button on that the dialog is an "OK" button which the user is expected to press when finished entering information in other fields. I cannot get any listeners set to that button to fire.

public class HeightDialog extends Dialog {

private Button okButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.heightdialog);
this.okButton = (Button)this.findViewById(R.id.userOkWithHeight);
this.okButton.setOnClickListener(new android.view.View.OnClickListener() {................

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Android :: Expanding ListView Custom Component With Button Click

Nov 5, 2010

I'm developing a small application in with a list view filled with a compound component. This component has two text view and one button inside. One of the text view is invisible and when the button is clicked it should appear. I can show the list but i can't make the textview visible when the button is clicked. Here is the xml of the component: And this is the ArrayAdapter that fills the list:

public class AddressAdapter extends ArrayAdapter { int resource;
RelativeLayout placeView;
EditText addressText;
public AddressAdapter(Context _context, int _resource, List _items) {
super(_context, _resource, _items);
resource = _resource;
} private OnClickListener buttonClick = new OnClickListener() {
public void onClick (View v) {
int i = placeView.findViewById(R.id.stub_import).getVisibility();
visibility(i);
} };
private void visibility(int i) {
// TODO Auto-generated method stub switch(i) {
case(View.GONE): { addressText.setVisibility(View.VISIBLE);
} case(View.VISIBLE): { addressText.setVisibility(View.GONE);
} } }
@Override public View getView(int position, View convertView, ViewGroup parent) {
Item item = getItem(position);
String name = item.getName();
String address = item.getAddress();
if (convertView == null) {
placeView = new RelativeLayout(getContext());
String inflater = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater vi = (LayoutInflater)getContext().getSystemService(inflater);
vi.inflate(resource, placeView, true);
} else { placeView = (RelativeLayout) convertView;
} TextView nameText = (TextView)placeView.findViewById(R.id.placeNamwView);
Button button = (Button)placeView.findViewById(R.id.Button01);
addressText = (EditText)placeView.findViewById(R.id.placeAddressText);
button.setOnClickListener(buttonClick);
nameText.setText(name);
addressText.setText(address);
return placeView;
} }

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Android :: 9-patches In - Selector - Drawable For Custom Button Style

Nov 28, 2009

I'm having a bit of a problem with a custom button style. I have the button states (9-patch drawables) set up in a <selector> drawable. The style I'm going for is a button that looks like it gets pushed down, i.e., you can see the front edge of the button until you press it. It works fine for the button itself, but the contents of the Button (or ImageButton) don't move when pressed, even though I have the 9-patch areas set up to move the content area for the depressed button states. It seems like it's keeping the same 9-patch areas no matter which image it's showing.

Here's an animated GIF to help make the problem a little clearer, since I'm awful at explaining things: http://www.crappytools.net/button_problem.gif The button moves when pressed, but the icon inside stays still. I played with the Draw 9-Patch utility, and it shows that the content area in the depressed image should be shifting downwards like intended.

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Android :: Implement Button Click From A Custom List View?

Jul 15, 2010

I am using one class which extends ListActivity and One class extending BaseAdapter.
The Base Adapter uses getView function to inflate layout from xml.
The xml contains a text and a button to delete the row of list.
Please let me know how to handle the button click in the ListActivity class.

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Android : Build Custom Like Radio Button But Function As Toggle?

Aug 17, 2010

I am trying to build a custom toggle button in Android, I want it to look like radio button but function as toggle button.

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Android : Create A Split Button For A Custom ListView Adapter?

Jul 3, 2010

I'd like to make a list adapter that formats views like this:

I want to be able to fire a different onClick when the user clicks the image. I have defined the onClick on the image itself in the getView() override, but how do I then get the position of the line that was clicked so I can update the record in the database to record the action?

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Android : Need To Make A Custom Button Shape Keep Systems Colors

Nov 4, 2010

I am creating custom shapes for certain buttons but I want them to maintain the systems current color scheme. I thought that by not applying a gradient or color it would automagically take care of this for me but I am mistaken. By doing that I end up with a black button and black text. Any pointers?

Obligatory code...

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Android :: Create A Custom Button In Droid That Animates With A Frame Animation?

Aug 6, 2010

Is it possible to create a custom button in Android, where the button is idly animating using a frame animation (AnimationDrawable)?

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Motorola CLIQ :: Custom Button Not Working

Dec 17, 2009

I wrote a TV Guide for the UK/Ireland market. Everything was ok until one of the people that downloaded it reported to me that the custom button I wrote wasnt actually working on his Cliq. I cant get back in touch with that user, so I cannot troubleshoot the problem. Could any of you Cliq users test the app and maybe send me a logcat?

Unfortunately I dont have a Cliq, nor have access to one.. any of you developers have noticed a similar behavior with your custom buttons? The app was tested on Magic/Hero/Tattoo.

You can find my app here. TellyZap Lite v1.0 Application for Android | Entertainment

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General :: Custom Bluetooth Headset Button Actions?

Jan 10, 2012

Is there any application or way to customize the actions performed when the headset button is pressed?

I use Tasker for various automated things, but looks like there's nothing there (did I miss something?).

Specifically, this is the button on a bluetooth headset that would normally start the voice dialer -- I'd like it to do something different, perhaps. I know that the button's "command" can be intercepted by some applications, because I know that Vlingo, when installed, becomes an option of an application that would "handle" the bluetooth button press (i.e. when I press it, it pops up a window for "which application do you want to use for this").

Unfortunately, Vlingo just uses this to launch its own voice dialer... If it matters, I'm using the Galaxy Nexus on ICS.

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General :: Remap Hardware Button To Custom App / Widget Action?

Nov 17, 2013

My new LG G2. It has this shortcut if you long press volume up/down it starts quick memo/camera. But quick memo is useless for me I'd rather love to start a widget (a tasker task). I tryed several app's and xposed framework modules but I can't get a Widget working with the remapping.

How to remap the volume up hardware button to a tasker task widget?

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Android :: Writing Authentication System

Jul 21, 2010

I am currently writing the backend for a service which has 3 clients: browser, android native and iphone native. I am having a little trouble with coming up with an authentication system since I don't know what can really be done on the clients.

I am using django + twisted for the backend.

Basically, I am going to be writing RestfulAPIs to open up for the clients on both phones to call.

Now the real question is, how should I come up with an authentication system?

I have thought about using sessionids, this works very well with the browser and I can use django's integrated app for that.

However, I don't know if it's possible for both the iphone and android to obtain a unique sessionid on the handset. Should I write an API call to distribute unique sessionids?

if that's the case, is it possible for me to still use django's authentication system since a lot of the stuff here are customized? ( I am not even using a rdbms - I am sticking with mongodb, so I was on the verge of dropping django's authentication app ftm).

I have looked at foursquare's API and their basic auth method requires you to pass in user:password in every http request header. That adds 1 additional authentication each call which can kind of seem excessive.

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Android :: What Complexities Are Involvod In Writing ROM

Jun 9, 2010

This is a pretty open ended question.I have a T-Mobile Touch and have some free time on my hands. So far as i understand im stuck with Android 1.5 and no sign of T-Mobile or Huawei releasing a ROM using a more up-to-date version of the Android SDK.Im asking what are the major complexities involved with making a ROM for this fone using a newer version of the Android SDK?

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Android :: Failed To Open /dev/msm Pcm Out For Writing

Sep 16, 2010

I would like to open an mp3 file with my own audio player(based on mplayer and FFmpeg) I packaged in a apk file. It runs fine using command line and the executable version but not when packaged in apk. I got the messages using adb logcat window:

I/stdout ( 2115): PCM: Samplerate: 48000Hz Channels: Stereo Format s16le I/stdout ( 2115): [AO PCM] Info: Faster dumping is achieved with -vc null -vo null -ao pcm:fast I/stdout ( 2115): [AO PCM] Info: To write WAVE files use -ao pcm:waveheader (default). I/stderr ( 2115): [AO PCM] Failed to open /dev/msm_pcm_out for writing! I/stderr ( 2115): Failed to initialize audio driver 'pcm:file=/dev/ msm_pcm_out' I/stderr ( 2115): Could not open/initialize audio device -> no sound. I/stdout ( 2115): Audio: no sound I/stdout ( 2115): Video: no video I/stdout ( 2115): Exiting... (End of file)

I put the permission in the manifest file as follows:

code:...............

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Android :: Writing Text On Images

Apr 9, 2009

I want to edit image for Writing text on images, is it possible in Android, if so, how to achieve this.

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Android :: Writing Firewall Applications

Nov 6, 2009

Does anyone have any suggestions on where to start in case one wants to write a firewall for Android? I am interested especially in how would one go about in blocking access for various applications that are blacklisted from a firewall application. As far as I could find, there are no firewall applications in the real sense except Droidwall which uses iptables on rooted phones, but I would like to see if there are any API calls currently in Android that may help with this task, be it NDK or SDK.

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Android :: Programmatically Writing PCM WAV Data

Mar 31, 2010

I'm looking for a way to programmatically save an array of shorts as PCM data. I know that this should be possible, but I haven't found a very easy way to do this on Android.Essentially, I'm taking voltage data, and I want to save it in PCM format. My function looks something like this:public void audifySignal(short[] signal) {// Create a WAV file from the incoming signal}Any suggestions would be awesome, or even references. Seems like the audio APIs built in to android are more geared for directly recording from the mic, and not so much for lower level signal processing type work (at least for saving raw data to a file). I'd also like to avoid having to manually write the PCM file headers and what not.

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