ListActivity值是对象，要显示字符串 [英] ListActivity Values are Objects, Want to Display Strings

问题描述

我有一个当前显示类型数据的对象列表的ListActivity。这些类型数据对象具有自定义数据：

I have a ListActivity that is currently displaying a list of type Data objects. These type Data objects have custom data:

String title;

下面是我在ListActivity构造：

The following is in my ListActivity constructor:

List<Data> values = dataInterface.getAllData();

ArrayAdapter<Data> adapter = new ArrayAdapter<Data>(this,
    android.R.layout.simple_list_item_1, values);
    setListAdapter(adapter);

屏幕上的应用程序显示所有数据对象没有错误。

The application displays on screen all the Data objects without error.

的问题是，对于每个列表项显示的文本是：

The problem is that the text displayed for each list item is:

Data@42731008
Data@427362c0

等。

我理解这些数据对象的对象ID的。相反，我想以显示Data.title中发现的字符串。我无法弄清楚如何做到这一点。

I understand these are the object id's of the Data objects. Instead, I want to display the Strings found in Data.title. I can't figure out how to accomplish this.

推荐答案

如果你不想使用自定义适配器，然后定义公共字符串的toString（）在你的数据类方法如下：

If you don't want to use a custom Adapter, then define the public String toString() method in your Data class as follows:

public String toString {
   return title;
}

它将由一个ArrayAdapter时使用它重新presents在ListView对象

It will be used by the ArrayAdapter when it represents the object in the ListView.

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