bitmapfactory – Tarik Billa

How can I print an image on a Bluetooth printer in Android?

April 9, 2023 by Tarik

I solve it converting Bitmap to Byte array. Remember that your image must be black & white format. For full source code: https://github.com/imrankst1221/Thermal-Printer-in-Android public void printPhoto() { try { Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.img); if(bmp!=null){ byte[] command = Utils.decodeBitmap(bmp); printText(command); }else{ Log.e(“Print Photo error”, “the file isn’t exists”); } } catch (Exception e) { e.printStackTrace(); … Read more

How to solve java.lang.OutOfMemoryError trouble in Android

February 9, 2023 by Tarik

You can’t increase the heap size dynamically but you can request to use more by using. android:largeHeap=”true” in the manifest.xml,you can add in your manifest these lines it is working for some situations. <application android:allowBackup=”true” android:icon=”@mipmap/ic_launcher” android:label=”@string/app_name” android:largeHeap=”true” android:supportsRtl=”true” android:theme=”@style/AppTheme”> Whether your application’s processes should be created with a large Dalvik heap. This applies to … Read more

Create a Bitmap/Drawable from file path

January 16, 2023 by Tarik

Create bitmap from file path: File sd = Environment.getExternalStorageDirectory(); File image = new File(sd+filePath, imageName); BitmapFactory.Options bmOptions = new BitmapFactory.Options(); Bitmap bitmap = BitmapFactory.decodeFile(image.getAbsolutePath(),bmOptions); bitmap = Bitmap.createScaledBitmap(bitmap,parent.getWidth(),parent.getHeight(),true); imageView.setImageBitmap(bitmap); If you want to scale the bitmap to the parent’s height and width then use Bitmap.createScaledBitmap function. I think you are giving the wrong file path.