How can I pass a Bitmap object from one activity to another
Bitmap
implements Parcelable
, so you could always pass it with the intent:
Intent intent = new Intent(this, NewActivity.class);intent.putExtra("BitmapImage", bitmap);
and retrieve it on the other end:
Intent intent = getIntent(); Bitmap bitmap = (Bitmap) intent.getParcelableExtra("BitmapImage");
Actually, passing a bitmap as a Parcelable will result in a "JAVA BINDER FAILURE" error. Try passing the bitmap as a byte array and building it for display in the next activity.
I shared my solution here:
how do you pass images (bitmaps) between android activities using bundles?
Passsing bitmap as parceable in bundle between activity is not a good idea because of size limitation of Parceable(1mb). You can store the bitmap in a file in internal storage and retrieve the stored bitmap in several activities. Here's some sample code.
To store bitmap in a file myImage in internal storage:
public String createImageFromBitmap(Bitmap bitmap) { String fileName = "myImage";//no .png or .jpg needed try { ByteArrayOutputStream bytes = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes); FileOutputStream fo = openFileOutput(fileName, Context.MODE_PRIVATE); fo.write(bytes.toByteArray()); // remember close file output fo.close(); } catch (Exception e) { e.printStackTrace(); fileName = null; } return fileName;}
Then in the next activity you can decode this file myImage to a bitmap using following code:
//here context can be anything like getActivity() for fragment, this or MainActivity.thisBitmap bitmap = BitmapFactory.decodeStream(context.openFileInput("myImage"));
Note A lot of checking for null and scaling bitmap's is ommited.