My question is how to write image data held in a buffer to a bitmap for subsequent display in imageview or further manipulation?
With reference to the library I'm working on in this post, I am successfully capturing video frames sent via NDI with the data of each frame stored in a ByteBuffer...
I am still struggling with printing. PDF printing creates random errors, so I am exploring bitmap printing.
But to get to 300 dpi requires a picture 2550x3300 for a letter size printing. As a result, the resulting default bitmap format chokes the printer.
Would it be possible to use a less...
I needed to draw a bitmap rotated from the upper-left corner, not the center of the image as the canvas DrawBitmapRotated function does. After looking up the math and coding this again for the I-don't-know-how-many time, I decided to post it here so I could find it quickly in the future, or...
OUR 237Pos App is Upgraded to B4X and 2 new Versions (B4i,B4J) adding the capability of Holding Sales.
237POS Cross Platform Point Of Sale Application built with B4X tools that will run on Desktops(Windows,macOS,Linux) Android Tablets And iPads.
Try The Android version...
I am successfully putting image files into an Sqlite blob, then later reading them from the blob field, however I end up with them in a bitmap object which I then have to put into an imageview. I can see the activity background image, so I k ow I have the blob as an image object, I just need to...
So I've learned how to make a bunch of bitmaps fly out of the center of the screen using the SetLayoutAnimated method and a timer.
What I'd like to do next is move a bitmap along a spiral path starting from the center of the screen. Any ideas on how to accomplish this without using thousands of...
Good day I am a bit frustrated as my code work in Android but not in IOS
I get the following error
Error occurred on line: 65 (Main)
Error loading image.
Stack Trace: (
CoreFoundation <redacted> + 252
libobjc.A.dylib objc_exception_throw + 56
CoreFoundation <redacted> +...
Using .png images for ACToolbar icons. Produce the bitmapdrawables with this code:
Sub BitmapDrawableFromFile(strFolder As String, strFile As String) As BitmapDrawable
Dim bmp As Bitmap
Dim bmpd As BitmapDrawable
bmp = LoadBitmap(strFolder, strFile)
I used erel solution for snapshot an item (for example - panel) - (https://www.b4x.com/android/forum/threads/save-only-the-image-inside-the-panel.92333/#post-583937)
Dim bmp As B4XBitmap = Crop_Image(Panel1, Panel1.left, Panel1.top, Panel1.width, Panel1.height...
I want a library that would allow users to add text over images like this-
I know a library exists in B4A, but can't find it right now.
Can anyone point me in the right direction?
I'm aware that a bitmap can be converted to a compressed PNG/JPEG data array for example by using bitmap.WriteToStream(). Does a way for getting just an uncompressed data array from a bitmap exist?
maybe someone had done this.
i need to give my library a bitmap from b4a
public Texture(android.graphics.Bitmap Bitmap1)
Dim bmp As Bitmap = LoadBitmap(File.DirAssets,"wood.png")