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
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);
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
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
[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
Here’s the correct way of doing it: protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == RESULT_OK) { Uri imageUri = data.getData(); Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri); } } If you need to load very large images, the following code will load it in in tiles (avoiding large memory … Read more
Use the below code to save the image to internal directory. private String saveToInternalStorage(Bitmap bitmapImage){ ContextWrapper cw = new ContextWrapper(getApplicationContext()); // path to /data/data/yourapp/app_data/imageDir File directory = cw.getDir(“imageDir”, Context.MODE_PRIVATE); // Create imageDir File mypath=new File(directory,”profile.jpg”); FileOutputStream fos = null; try { fos = new FileOutputStream(mypath); // Use the compress method on the BitMap object to … Read more
Android:java.lang.OutOfMemoryError: Failed to allocate a 23970828 byte allocation with 2097152 free bytes and 2MB until OOM