Java-是否有其他备用第三方Collections（ArrayList等）库？

Question

The story is that I'm now programming for Android.

I found that ArrayList is really slow, especially when used with adapters for listviews, as sorting and searching are required for my project. Is there any alternative library out there?

Thank you so much.

Answer 1

As other answers have said, there are some alternative Collection libraries.

However, in core your problem might not be the library but rather your own choice of Collection. Using a different library, will not change this.

In Java, and thus Android, you have a vast array of Collection choices to your disposal, all with different pro's and cons.

This is a way to long story to write up, so unless you write down exactly what you want to do with it, no one can really tell you which choice is best. However, to give you a little start you could take a look at this;

Answer 2

Other than Collection framework in standard java API, below two are famous for their rich collection framework.

• Google Guava Collections
• Apache Commons Collections

Answer 3

You can sort and search just fine with the existing Java collections. I see no need for anything else.

But there are alternatives, like Google Collections and Apache Commons stuff.

Answer 4

Drawback of ArrayList is that you cannot store primitives in it.
Leading to much more memory usage compared to an array.
In Situation where you have very huge arrays (eg > ten or hundred thousands elemts) a growing primitive array is often the better solution.

This article shows to implement your own ArrayListLong using primitive types: