Android按属性对arraylist进行排序

我想ArrayList按属性排序。这是我的代码…

public class FishDB{

public static Object Fish;

public ArrayList<Fish> list = new ArrayList<Fish>();

public class Fish{

String name;

int length;

String LatinName;

//etc.

public Vis (String name) {

this.name = name;

}

}

public FishDB() {

Fish fish;

fish = new Fish("Shark");

fish.length = 200;

fish.LatinName = "Carcharodon Carcharias";

fish = new Fish("Rainbow Trout");

fish.length = 80;

fish.LatinName = "Oncorhynchus Mykiss";

//etc.

}

}

}

现在我想ArrayList按属性将其排序,例如latinname在另一个活动中。但是我不知道该怎么做。有人知道吗?

回答:

您需要实现Comparator,例如:

public class FishNameComparator implements Comparator<Fish>

{

public int compare(Fish left, Fish right) {

return left.name.compareTo(right.name);

}

}

然后像这样排序:

Collections.sort(fishes, new FishNameComparator());

以上是 Android按属性对arraylist进行排序 的全部内容, 来源链接: utcz.com/qa/425715.html

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