Android：BaseAdapter 如何？

发布于 2024-07-14 01:50:42 字数 1201 浏览 5 评论 0原文

好吧，我一直在仔细搜索，并且在实现 BaseAdapter 时遇到了一些问题。

我已经能够实现一个简单的光标适配器 http://开发人员。 android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List7.html 按照上面的示例。

这里有一个非常好的 BaseAdapter 示例： List14 google 示例

我想使用 BaseAdapter 创建自己的列表适配器来显示 listView，其中包含数据库中的多个项目。我知道这可以使用简单游标适配器来完成，但我希望以不同的方式处理行，因此我希望能够通过重写 getView 来绘制每一行。数据将从游标中提取。

我知道这段代码对于获取光标数据来说很难看，但假设我已经填充了光标。如果第 8 列包含图像资源 id，您对此有何建议。：

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    cursor.moveToPosition(position);
    ImageView i = new ImageView(mContext);
    i.setImageResource(cursor.getShort(8));
    i.setAdjustViewBounds(true);
    i.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

    return i;
}

您有任何使用光标绘制 BaseAdapter 的好例子吗？

原文

Ok, I have been searching thick and thin, and I am having some issues implementing a BaseAdapter.

I have been able to implement a Simple Cursor Adapter
http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List7.html as per the example above.

There is a pretty good BaseAdapter example here : List14 google example

I am wanting to create my own List Adapter using BaseAdapter to show a listView, with multiple items from a Database. I know this can be done using the Simple Cursor Adapter, but I am looking to handle rows differently, so I want to be able to draw each row by overriding getView. The data would be pulled from a cursor.

I know this code is ugly for getting to the cursor data, but assuming I have populated a cursor. What suggestions do you have on this if column 8 contains the image resource id. :

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    cursor.moveToPosition(position);
    ImageView i = new ImageView(mContext);
    i.setImageResource(cursor.getShort(8));
    i.setAdjustViewBounds(true);
    i.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

    return i;
}

Do you have any good examples of a BaseAdapter being drawn using a cursor?

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