Android Cheat Sheet

Kotlin Flow

Kotlin’s Flow, ChannelFlow, and CallbackFlow Made Easy

Bitmap Pool

imageView.setImageBitmap(bitmapOne);

// Reuse the bitmap one with two
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(filePathTwo, options);
options.inMutable = true;
options.inBitmap = bitmapOne;
options.inJustDecodeBounds = false;
Bitmap bitmapTwo = BitmapFactory.decodeFile(filePathTwo, options);
imageView.setImageBitmap(bitmapTwo);```