If all of your images are similarly sized, you are attempting to allocate ~2028601104 bytes = ~1981055KB = ~1934MB. You have 64MB or less on most Android devices that your app can use. The image that you failed on is 22050012 bytes in size, when decoded and perhaps scaled. That is equivalent to 2347 x … Read more
Bitmap is System Type…which you can find in System.Drawing namespace… solved c# type Bitmap is have in the system or we can create any kind of type
Not really, because the canvas doesn’t keep track of distinct images. However, you can easily “clear” any part of your canvas simply by drawing over it. This will allow you to redraw all remaining pictures. This could however be quite time consuming if there are many pictures and a user is busy dragging a single … Read more
Stride is usually reported in bytes, not pixels. Each pixel is 4 bytes (32 bits). This means that your offset or padding will be 0 (2048 bytes – 512*4 bytes). Each row of your bitmap will be 512 * 4 = 2018 bytes, and there will be 512 rows. This means that it is simply … Read more
I think you are already deleting the file after creating it and then you are trying to convert the non-exists file into the bitmap which is not valid. That is why you are getting an error no such file or directory found. Just remove the line file.delete(); from your code and try out. 6 solved … Read more
bitblt(Masterbitmap.Canvas.handle, 0, 0, XPixel, YPixel, bitmap.Canvas.handle, 0, 0, srcand); you explicitly called Masterbitmap.Canvas.Lock, however you didn’t call bitmap.Canvas.Lock (so you can loose the canvas handle anytime within this call…) Additionally, you need to consider thread safety within GDI itself: Sharing of any GDI objects between different threads should be avoided at all cost. For example … Read more
HI as per my understanding, You can do this and also you can follow This Link Bitmap yourBitmap; Bitmap resized = Bitmap.createScaledBitmap(yourBitmap, newWidth, newHeight, true); or: resized = Bitmap.createScaledBitmap(yourBitmap,(int)(yourBitmap.getWidth()*0.8), (int)(yourBitmap.getHeight()*0.8), true); Also You can use this method public Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) { int width = bm.getWidth(); int height = bm.getHeight(); float … Read more
Try this code: +(UIImage *)scaleAndRotateImage:(UIImage *)image { int kMaxResolution = 640; // Or whatever CGImageRef imgRef = image.CGImage; CGFloat width = CGImageGetWidth(imgRef); CGFloat height = CGImageGetHeight(imgRef); CGAffineTransform transform = CGAffineTransformIdentity; CGRect bounds = CGRectMake(0, 0, width, height); if (width > kMaxResolution || height > kMaxResolution) { CGFloat ratio = width/height; if (ratio > 1) { … Read more
First things first, 14.5 MB is the size of the JPEG but not the size of your actual image. Similarly, try to resave the image as png, you will see that size is increased by factors of 10, i.e. it might even reach 150 MB One thing that you must keep in mind is that … Read more
in an inefficent way: Bitmap bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888); for (int i = 0; i < width; i++) { for (int j = 0; j < height; j++) { bitmap.setPixel(i, j, Color.argb(255, 255, 0, 0)); } } for a full red bitmap 1 solved Make uniform colored Bitmap [closed]
As i mentioned in comments, You could actually reuse the bitmap. You could also draw on canvas directly for date and time since the datetime bitmap will consume 160000 bytes i.e 156kb. I have not tested the code. This is just a suggestion. class TheTask extends AsyncTask<Void, Void, Bitmap> { File mediaFile = new File(MenuScreen.mediaStorageDir.getPath() … Read more