Question

The Bundle and ContentValues classes seem to have pretty similar functionality.

Is there an efficient way of converting from one to another (and vice-versa) without having to loop through the classes, calling get and put subsequently on each element?

Answer 1

I’ve scanned the Android source code and both Classes use a Map to hold the underlying data. Specifically, Bundle uses a Map and ContentValues uses a HashMap.

However, Bundle permits any parcelable objects to be loaded, while ContentValues‘ implementation accepts the primitive type classes (Integer, String, Double etc.) and byte arrays.

So it looks like in principle, ContentValues is a special case of Bundle, so converting from ContentValues to Bundle might have been possible if the internals were accessible, but the reverse is problematic, since a Bundle can hold objects not strictly compatible with ContentValues.

Any comments on this are welcome.