General :: How To Reflect Horizontally On Canvas Image Bitmap
Sep 10, 2013
At canvas there are many methods (canvas.rotate (35); canvas.drawBitmap (myBitmap, x, y, null); and many other things), but the method of mirror reflexion of image is absent (or I have not found it). At Bitmap too not that is not. Is it possible to reflect horizontally on canvas the image given Bitmap?
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Jul 7, 2010
My loadMap() method generate a canvas.throwIfRecycled exception when i try to load a new map.
When i start the game, the initial map loads and work fine though,
its only when i try to load a new map that i get the exception ..
How can i "reset" canvas and the bitmap i use to draw into, so i can startover fresh with them ?
here's what i use to create and draw my maps:
CODE:.........
So basicaly once i created and used picDest and canvas, i cannot figure how to reset it all for when i want to load a new map..
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Jul 21, 2010
I have a very large image and I only want to display a section the size of the display (no scaling), and the section should just be the center of the image. Because the image is very large I cannot read the entire image into memory and then crop it. This is what I have so far but it will give OutOfMemory for large images. Also I don't think inSampleSize applies because I want to crop the image, not lower the resolution.
Uri data = getIntent().getData();
Input Stream is = getContentResolver().openInputStream(data);
Bitmap bitmap = BitmapFactory.decodeStream(is, null, null);
Any help would be great?
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Feb 6, 2010
Can anyone point me to an example of how to blur a Canvas or Bitmap?
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Aug 22, 2009
I am getting the following logs when i am changing the wallpaper for Homescreen. Even i am recycling the bitmap is done when the wallpaper changes in OnWallpaperChanged(). Still i m getting the bellow error.
CODE:.........................
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Mar 6, 2009
Can anyone explain me the difference between View's Canvas and Bitmaps Canvas
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Nov 16, 2010
I want to get the current bitmap associated with my canvas so I can perform operations on it. I can't see how to do this though.
I've seen some examples where you create a bitmap and set the canvas to use this bitmap, so obviously you can then access it later, but I'm using the canvas returned from a SurfaceHolder so there's no constructor.
For instance, examples often show this kind of thing:
CODE:...........
So at this point I can see bmp.
In my case, the canvas is obtained by:
CODE:......
So how can I get the bitmap for c?
In short, my aim is to capture the current canvas contents where I have drawn "stuff", and make a copy of it, reversed, to put underneath. Like a reflection. The example of this that I found performed it all via bitmaps, so I assumed I needed to somehow capture the current canvas to a bitmap to then use it.
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May 14, 2010
I am starting to develop a game. Right now I got a sprite animation going when a player moves across using sprite sheet. In my sprite sheet the character is always facing the same way, left. Now if I want the character to move right, I want it to be facing right. So is there a quick way in android to invert the bitmap after it has been loaded in? Or do I have to create sprite sheet for character facing right?
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Oct 13, 2011
i want to create a basic animation with a sprite sheet. there is only one row with about 2 pics (that's the first animation).
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Oct 6, 2010
Is there a way to center an image horizontally based on another image? Could be from xml or coded.For example one button on top and another button below (i.e. android:layout_below="@+id/button1"), but centered horizontally based on the first one.
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Mar 25, 2010
I want to draw a bitmap on a canvas with bigger size than it is. I can use canvas.drawBitmap(bitmap, null, destRect, null); but that gives a poor quality, as the result is pixelated, if the source image is sightly smaller than the destination rectangle. How can i draw my bitmap using bilinear or bicubic resampling?
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Mar 15, 2010
Does anyone how I go about detecting when a user presses on a bitmap which is inside a canvas?
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Jan 5, 2012
I've had my nifty ZTE Warp for a while now and I'm pretty happy. One thing that's a bit annoying, however, is the email application on my phone. When I'm on my laptop, I frequently delete or sort my emails into various folders through Gmail. The actual Gmail app on my phone will reflect such changes instantly. However, the 'Email' app on my phone seems to store every single email I receive, whether I delete it or not! It also sends me copies of my sent messages. I have two Gmail accounts attached to my phone and I have this same issue with both.
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May 16, 2014
i generated a tzdata file with the new 2014c timezone file from IANA to reflect a change in my country DST
i pushed the file to /system/usr/share/zoneinfo and changed the
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Feb 1, 2010
I draw 2d images on the canvas using the following tutorial.
http://www.designerandroid.com/?cat=3
I want to save what ever displaying in a canvas as a jpg image, how can i do it?
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Sep 24, 2010
As we know, we can rotate a bitmap through 2 ways. The 1st way is: Matrix mt = new Matrix(); mt. postRotate (degree);Bitmap bitmap = CreateBitmap(src, 0, 0, w, h, mt, true); canvs.drawBitmap(bitmap, 0, 0, paint); In this way, we always need create new bitmap for every rotation, it is not good way for high performance game or app.The 2nd way is: canvas.save(); canvas.rotate(degree); canvas.drawBitmap(bitmap, 0, 0, paint); canvas.restore();In this way, we avoid creating new bitmap frequently, but the rotation bitmap is distortion, the bitmap quality is worse than first way.So, Is there 3rd way to rotate bitmap with high performance and good quality? Your any comments are really appreciated!
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Nov 16, 2010
I'm developing an application which allows user to edit an image and save that edited image as new image on sd card I want to get the current state of the canvas object.
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Nov 10, 2010
Rotate image on canvas around its center . i tried some example from net but i am failed
if i am using bitmap.creatbitmpa with matrix i am getting error
Please suggest me which is better
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Dec 2, 2009
Any one know about how to draw a bitmap image?...
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Sep 20, 2010
Can anybody have any idea about how to get a small bitmap image from a big bitmap which is the combination of many bitmaps. Any help will be appreciative.
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Aug 18, 2010
I have an image in .png format in "drawable" folder and need to create Bitmap from it, so can use in public void drawBitmap (Bitmap<http://developer.android.com/reference/android/graphics/Bitmap.html>bitmap, float left, float top, Paint <http://developer.android.com/reference/android/graphics/Paint.html>paint)
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Nov 26, 2013
I have a basic application that uses just squares and circles that appear when the screen is toched. I want to be able to save this created image, the design is build on a bitmap image, and displayed on the canvas so I want to be able to save that as an image to the mobile device.
code for saving this?
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Jun 16, 2010
I need a small help on rotating one image around its center of axis among multiple images which are drawn to canvas in android.
I am loading images to canvas like below.
canvas.drawBitmap(mMachineBackground, 0, 0, null);
canvas.drawBitmap(mMachineRotator, 0, 0, null);
I want to rotate only the second bitmap around its center of axis instead of rotating the entire canvas(which includes first bitmap also).
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Oct 12, 2010
Hints to draw a spot(small filled circle) on a bitmap image.
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Jun 10, 2010
For bitmap image..this code is not working
CODE:...............
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Jun 1, 2010
I am using BitmapFactory.decodeFile to load Bitmaps of images into my application. However, the function returns null on large images (such as those from the camera). The filepath is definitely correct, I just can't figure out why it would return null. I tried supersampling, but it didn't seem to help.
Does anyone have any idea why it would do this or how I could more easily load images taken from the camera into a Bitmap?
Here's the code I am using...
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Jun 9, 2010
I have a Bitmap image (bm) and a an ImageView (iv) of 50 by 50 when i do iv.setImageBitmap(bm) ... only a portion of the entire image is seen ..How can i see the whole image in the 50 dip by 50 dip ImageView...
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Feb 9, 2010
I want display image on another bitmap image with text.please send me the code if you are having solution.
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Mar 10, 2010
How can i convert a Bitmap to Drawable.
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Jan 24, 2009
Will anybody guide me, I want to decode image bitmap picked from Picture application(on a android phone), so How should I achieve this. First thing is how to retrieve image from Picture application, after picking it, if I assign it to temp image variable, is there any method in Bitmap.Factory to decode this image into bitmap.
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