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  • Android: How to get a custom view to redraw partially?

    - by Peterdk
    I have a custom view that fills my entire screen. (A piano keyboard) When a user touches the key, it would cause a invalidate() to be called and the whole keyboard gets redrawn to show the new state with a touched key. Currently the view is very simple, but I plan to add a bit more nice graphics. Since the whole keyboard is dynamically rendered this would make redrawing the entire keyboard more expensive. So I thought, let's look into partial redrawing. Now I call invalidate(Rect dirty) with the correct dirty region. I set my onDraw(Canvas canvas) method to only draw the keys in the dirty region if I do indeed want a partial redraw. This results in those keys being drawn, but the rest of the keyboard is totally black/not drawn at all. Am I wrong in expecting that calling invalidate(Rect dirty) would "cache" the current canvas, and only "allows" drawing in the dirty region? Is there any way I can achieve what I want? (A way to "cache" the canvas and only redraw the dirty area?"

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  • In Android (on JB), how can I add an action to a custom rich notification?

    - by user496854
    I've been playing with the new rich notificaitons in Jelly Bean, and everything works as expected when I set up a new notificaiton using the templates Notification.BigPictureStyle, Notification.BigTextStyle, or Notification.InboxStyle. I can use the Notification.Builder.addAction() method, and the action buttons show up at the bottom of the extended notification. But when I try to create a cutsom notification using Notification.bigContentView, the action buttons never show up. Just to clarify, if I never set bigContentView, the buttons do show up. But as soon as that field is set to a custom RemoteViews object, the buttons are gone. Does anyone have any ideas on why this is happening?

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  • Overlaying image also fades when images change in IE6 jQ slideshow

    - by Hege Rokenes
    I have a pretty basic slideshow fading between images. On top of that slideshow I have a logo that is absolute positioned to stay partly over the slideshow. It works perfectly, but then there is IE6. In IE6 the part of the logo that is overlaying the slideshow also fades when the images change in the slideshow. I really do not want to have half the logo in all the pictures in the slideshow, but that seems to be the only solution right now. Demo of the problem here: http://nonstopas.no/temp/slideshow/ Note that this happens a bit inconsistently (or so it seems), so watch it for a couple of rounds.

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  • Perl Catalyst -- Is this helpful to use for images/graphs display

    - by Octopus
    I have simple perl/cgi scripts based web server which is mainly used to display graphs and Images. I am looking to make it more technical and come to know about Catalyst. I have installed all the required perl modules on my test platform and created an application called myweb. Also, I am going through the catalyst documents to reach my goal but nothing helpful yet. Is Catalyst helpful to display images/graphs on web? How to use my existing cgi/perl scritps with Catalyst? Any example would be really appreciated.

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  • getting all contacts (including from other syncAdapters) in android content handler.

    - by eyal
    Hi i have this Query: private Cursor getContacts(CharSequence constraint) { boolean hasConstrains = constraint != null && constraint.length() != 0; Uri uri = ContactsContract.Contacts.CONTENT_URI; String[] projection = new String[]{ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME }; String selection = hasConstrains ? projection[1] + " LIKE '"+constraint+"%'" : null; String[] selectionArgs = null; String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " ASC"; return managedQuery(uri, projection, selection, selectionArgs, sortOrder); } The first time issue it i give null as parameter to the function to the selection parameter is empty, meaning i don't filter any rows. The problem is i get only contacts i created myself using no syncAdapter. I used facebook app to synch my facebook contacts, but this query doesn't return them. I extracted the contacts2.db from the emulator and the view_contacts view shows me all the contacts, so the DB is updated. What should i do to get all the contacts regardless of how they were created (with which synch adapter)

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  • ClassCaseException on GL11ExtensionPack. Rendering to texture on OpenGL android

    - by Joe
    I'm trying to render to a texture (really thought it would be easier than this!) I found this resource: which seems to be exactly what I want I'm getting a ClassCastException however, on GL11ExtensionPack gl11ep = (GL11ExtensionPack) gl; Can anyone tell me why? public void renderToTexture(GLRenderer glRenderer, GL10 gl) { boolean checkIfContextSupportsExtension = checkIfContextSupportsExtension(gl, "GL_OES_framebuffer_object"); if(checkIfContextSupportsExtension) { GL11ExtensionPack gl11ep = (GL11ExtensionPack) gl; int mFrameBuffer = createFrameBuffer(gl,texture.getWidth(), texture.getHeight(), texture.getGLID()); gl11ep.glBindFramebufferOES(GL11ExtensionPack.GL_FRAMEBUFFER_OES, mFrameBuffer); gl.glViewport(0, 0,texture.getWidth(), texture.getHeight()); gl.glLoadIdentity(); int halfWidth = texture.getWidth()/2;//width/2; int halfHeight = texture.getHeight()/2;//height/2; GLU.gluOrtho2D(gl, -halfWidth, halfWidth , -halfHeight, halfHeight); gl.glMatrixMode(GL10.GL_MODELVIEW); gl.glLoadIdentity(); gl.glEnable(GL10.GL_TEXTURE_2D); Quad quad = new Quad(texture.getWidth(), texture.getHeight()); quad.setTexture(texture); SpriteRenderable sr = new SpriteRenderable(quad); //sr.setPosition(new Interpolation<Vector2>(new Vector2(-(float)texture.getWidth()/2f,-(float)texture.getHeight()/2f))); //sr.setPosition(new Interpolation<Vector2>(new Vector2((float)(texture.getWidth()/2f),0))); //sr.setPosition(new Interpolation<Vector2>(new Vector2(200,-200))); sr.setAngle(0.05f); sr.renderTo(glRenderer, gl, 1); for (Renderable renderable : renderThese) { if (renderable.isVisible()) { renderable.renderTo(glRenderer, gl, 1); } } gl11ep.glBindFramebufferOES(GL11ExtensionPack.GL_FRAMEBUFFER_OES, 0); } }

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  • Rebinding jQuery qtip tooltip on images in bxcarousel

    - by skerit
    I'm using bxcarousel to show a bunch of images. Each image has a tooltip, which I display using qtip. This works fine for the first round, but when the images come round a second time the tooltips don't show anymore (because bxcarousel removes an element that slides out and puts it back at the end) An example of the carousel can be found here: http://www.kipdola.be/carousel/carousel.html This is the code used to bind the events (maybe it needs a "live" function somewhere?) // Create the tooltips only on document load $(document).ready(function() { // Use the each() method to gain access to each elements attributes $('#shopcarousel a[rel]').each(function() { $(this).qtip(

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  • How to change one Button background in a gridview? -- Android

    - by Tstop Studios
    I have a GridView with 16 ImageView buttons. My program makes a random number and when the user clicks a button in the gridview, i want it to take the random number (0-15) and set the background of the tile with the same position as the random number (0-15) to a different image. How can I just change one of the buttons background? Here's my code so far: public class ButtonHider extends Activity { Random random = new Random(); int pos; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.button_hider); pos = random.nextInt(15); GridView gridview = (GridView) findViewById(R.id.gvBH); gridview.setAdapter(new ImageAdapter(this)); gridview.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View v, int position, long id) { pos = random.nextInt(16); if (position == pos) { Toast.makeText(ButtonHider.this, "Found Me!", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(ButtonHider.this, "Try Again!!", Toast.LENGTH_SHORT).show(); } } }); } public class ImageAdapter extends BaseAdapter { private Context mContext; public ImageAdapter(Context c) { mContext = c; } public int getCount() { return 16; } public Object getItem(int position) { return null; } public long getItemId(int position) { return 0; } // create a new ImageView for each item referenced by the Adapter public View getView(int position, View convertView, ViewGroup parent) { ImageView imageView; if (convertView == null) { // if it's not recycled, initialize some // attributes imageView = new ImageView(mContext); imageView.setLayoutParams(new GridView.LayoutParams(100, 100)); imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); imageView.setPadding(15, 15, 15, 15); } else { imageView = (ImageView) convertView; } imageView.setImageResource(R.drawable.bh_b); return imageView; } } }

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  • Putting Images Inside a BUTTON Element (HTML & CSS)

    - by Jimbo
    I have a simple button (as shown below) on which I need to display two pictures, one on either side of the button text. Im battling to create the CSS that will work in both Firefox and Internet Explorer! (the button images are coming from a JQuery UI skin file) CSS button div{ width:16px; height:16px; background-image: url(images/ui-icons_d19405_256x240.png); } button div.leftImage{ background-position: -96px -112px; float: left; } button div.rightImage{ background-position: -64px -16px; float: right; } HTML <button><div class="leftPic"></div><span>Button Text</span><div class="rightPic"></div></button>

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  • In Android: How to Call Function of Activity from a Service?

    - by nex
    Hi folks, I have an Activity (A) and a Service (S) which gets started by A like this: Intent i = new Intent(); i.putExtra("updateInterval", 10); i.setClassName("com.blah", "com.blah.S"); startService(i); A have a function like this one in A: public void someInfoArrived(Info i){...} Now I want to call A.someInfoArrived(i) from within S. Intent.putExtra has no version where I could pass an Object reference etc ... Please help! PS: The other way around (A polling S for new info) is NOT what I need. I found enough info about how to do that.

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  • To store images from UIGetScreenImage() in NSMutable Array

    - by sujyanarayan
    Hi, I'm getting images from UIGetScreenImage() and storing directly in mutable array like:- image = [UIImage imageWithScreenContents]; [array addObject:image]; [image release]; I've set this code in timer so I cant use UIImagePNGRepresentation() to store as NSData as it reduces the performance. I want to use this array directly after sometime i.e after capturing 1000 images in 100 seconds. When I use the code below:- UIImage *im = [[UIImage alloc] init]; im = [array objectAtIndex:i]; UIImageWriteToSavedPhotosAlbum(im, nil, nil, nil); the application crashes. And I dont want to use UIImagePNG or JPGRepresentation() in timer as it reduces performance. My problem is how to use this array so that it is converted into image. If anybody has idea related to it please share with me. Thanks in Advance.

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  • SSRS: Report loading external images, image not found, can I hide the image control

    - by Nauman
    My SSRS report loads logo images for each customer from a customer number specific folder on the report server. I write an expression, to form my URL to the image based on th customer number. ..."http://localhost/images/" + iCustomerNumber.ToString() + "/logo.gif" I am able to get this working, but the problem I face is, when a particular customer doesn't has an image, then my report shows a red X mark in place of the logo. In this case, I expect to hide the image control itself. Any thoughts???? The other dirty solution will be to ensure that each customer specific folder has the designated image! even if there is no logo for a customer, I'll place a blank.gif or a spacer.gif of probably a square pixel in dimension!.

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  • Android: GPS location updates when the cellphone is in sleep?

    - by wei
    I need to update the location through GPS in the background even when the phone is in sleep. I am thinking to use AlarmManager to broadcast an Intent and then a receiver will call requestLocationUpdates() on LocationManager. But I am not sure whether it's guaranteed that the GPS location will be updated when the phone is in sleep and an intent will be broadcasted if I registered a PendingIntent when call requestLocationUpdates()? thanks,

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  • Blending Three Images into Graphics Context Using Alpha Blend Mode kBlendModeOverlay

    - by steganous
    Does kCGBlendModeOverlay not work exactly like Photoshop's Overlay blending mode? I'm trying to overlay three images into a graphic context via: [uiimageGreen drawAtPoint:CGPointMake(x, y) blendMode:kCGBlendModeOverlay alpha:1.0]; [uiimageRed drawAtPoint:CGPointMake(x, y) blendMode:kCGBlendModeOverlay alpha:1.0]; [uiimageBlue drawAtPoint:CGPointMake(x, y) blendMode:kCGBlendModeOverlay alpha:1.0]; In the end, if I overlay just two of the three, the result is much closer to my desired output color in places where both images intersect. Adding the third image, however, causes the first-drawn image's color to be dominant in the resulting mix of colors. (e.g. in the above code, green comes out dominant, when the result should actually be white) Do you get the same result if you try?

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  • How to resize the RelativeLayout or any other Layout in Android ?

    - by sunil
    Hi, I have a RelativeLayout defined in xml and I call the setContentView(R.layout.relativeLAyout) for displaying in Activity. Now, if I want to resize this RelativeLayout then can it be done and if yes, then can someone let me know how? The inner components can be resized relatively to the parent. Is this actually possible? Regards Sunil

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  • Android: How to read a txt file which contains Chinese characters?

    - by TianDong
    Hallo, i have a txt file which contains many chinese characters, and the txt file is in the directory res/raw/test.txt. I want to read the file but somehow i can't make the chinese characters displayed correctly. Here is my code: try { InputStream inputstream = getResources().openRawResource(R.raw.test); BufferedReader bReader = new BufferedReader(new InputStreamReader(inputstream,Charset.forName("UTF-8"))); String line = null; while ((line= bReader.readLine())!= null) { Log.i("lolo", line); System.out.println("here is some chinese character ???????"); } } catch (IOException e) { e.printStackTrace(); } Both Log.i("lolo", line); and System.out.println("here is some chinese character ???????") don't show characters correctly, i can not even see the chinese characters in the println() method. What can i do to fix this problem? Can anybody help me?

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