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In my activity, I create a Bitmap object and then I need to launch another Activity, How can I pass this Bitmap object from the sub-activity (the one which is going to be launched)?

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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");

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