如何在Android中从ArrayAdapter上的ArrayList更新项目 [英] How to update an item from ArrayList on ArrayAdapter in Android

问题描述

我是开发Android的新手，我有一个ListView和自定义的ArrayAdapter，其中包含一个arraylist.我想按位置更新arraylist的特定项目.我该如何处理，请提前帮助我.

I am new at developing Android.I have a ListView and custom ArrayAdapter which holds an arraylist.I want to update arraylist specific item by position.How can I handle please help me thanks in advance.

推荐答案

假定适配器正在存储List个Foo对象.

Assuming your adapter is storing a List of Foo objects.

Foo item = mAdapter.getItem(position);
item.setValue("blah");  //Or whatever you need to update
mAdapter.notifyDataSetChanged();

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