Welcome toVigges Developer Community-Open, Learning,Share
Welcome To Ask or Share your Answers For Others


0 votes
in Technique[技术] by (71.8m points)

android - How to represent 2 cursors as 1 sorted cursor?

I have 2 different sets of data, each of them use its own ContentProvider. Querying to them I can get 2 different cursors. Those 2 cursors has 2 different primary keys, but there's one and the same field (DATE) which I can use for ordering (other fields are different).

My goal is to have one final merged Cursor which will be sorted by those DATE field. I have investigated MergeCursor but it doesn't fit to me, since it returns merged/concatenated (but not sorted Cursor).

Any ideas, clues?

See Question&Answers more detail:os

Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

You can try this class from AOSP repository: https://android.googlesource.com/platform/frameworks/base.git/+/android-4.4.4_r1/core/java/com/android/internal/database/SortCursor.java

There is a performance warning at the beginning of the class but if you don't have 10K or 100K records it might be fine.

Welcome to Vigges Developer Community for programmer and developer-Open, Learning and Share