There is no difference between the two internally setImageBitmap is calling setImageDrawable. Below code is picked from ImageView.java of AOSP public void setImageBitmap(Bitmap bm) { // if this is used frequently, may handle bitmaps explicitly // to reduce the intermediate drawable object setImageDrawable(new BitmapDrawable(mContext.getResources(), bm)); }
I would suggest you to use iText pdf library. Here is the gradle dependency: implementation ‘com.itextpdf:itextg:5.5.10’ Document document = new Document(); String directoryPath = android.os.Environment.getExternalStorageDirectory().toString(); PdfWriter.getInstance(document, new FileOutputStream(directoryPath + “/example.pdf”)); // Change pdf’s name. document.open(); Image image = Image.getInstance(directoryPath + “https://stackoverflow.com/” + “example.jpg”); // Change image’s name and extension. float scaler = ((document.getPageSize().getWidth() – document.leftMargin() … Read more
Drawable d; // the drawable (Captain Obvious, to the rescue!!!) Bitmap bitmap = ((BitmapDrawable)d).getBitmap(); ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream); byte[] bitmapdata = stream.toByteArray();
Bitmap#getPixel(x, y) returns an int with the colour values and alpha value embedded into it. int colour = bitmap.getPixel(x, y); int red = Color.red(colour); int green = Color.green(colour); int blue = Color.blue(colour); int alpha = Color.alpha(colour);
This is probably because of differing densities. Your resource is probably stored in a medium density folder, but your device is hdpi. Medium density is 160dpi, high density is 240dpi. Thus your bitmap is scaled to 1.5x the size it was originally. See the document on multiple screens for more info. If resources are not … Read more
You could use the toString method of the android Uri in combination of the String based constructor of the Java URI. android.net.Uri auri = new android.net.Uri(what ever); java.net.URI juri = new java.net.URI(auri.toString()); Android URI | Java URI
[Note that (as CommonsWare points out below) the whole approach in this answer only applies up to and including 2.3.x (Gingerbread). As of Honeycomb Bitmap data is allocated in the VM heap.] Bitmap data is not allocated in the VM heap. There is a reference to it in the VM heap (which is small), but … Read more
use following method to convert bitmap to byte array: ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream); byte[] byteArray = byteArrayOutputStream .toByteArray(); to encode base64 from byte array use following method String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);
Bitmap bitmap = ((BitmapDrawable)image.getDrawable()).getBitmap();
This isn’t a direct answer to the question (loading images >2048), but a possible solution for anyone experiencing the error. In my case, the image was smaller than 2048 in both dimensions (1280×727 to be exact) and the issue was specifically experienced on a Galaxy Nexus. The image was in the drawable folder and none … Read more