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我正在使用 baseadapter 创建自己的 listview 适配器，并且我想在运行时动态创建视图而不使用充气器。当我不使用 baseadapter 执行此操作时，它可以正常工作，但当我将代码放入 baseadapter 时却不行。

public View getView(int position, View convertView, ViewGroup parent) {

        int type = getItemViewType(position);
        System.out.println("getView " + position + " " + convertView + " type = " + type);
        if (convertView == null) {

            switch (type) {
                case TYPE_ITEM:
                    //convertView = mInflater.inflate(R.layout.item1, null);
                    LinearLayout ll = new LinearLayout(MainActivity.this);
                    TextView question = new TextView(MainActivity.this);
                    question.setTextSize(1,14);
                    question.setText("This is question");

                    ll = new LinearLayout(MainActivity.this);
                            ll.setOrientation(android.widget.LinearLayout.VERTICAL);
                    ll.addView(question); 
                    convertView=ll;
                    break;
                case TYPE_SEPARATOR:
                    convertView = mInflater.inflate(R.layout.item2, null);
                    break;
            }
        } else {
        }
        return convertView;
    }
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1 回答 1

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You first check if convertView is null and then return null if type is TYPE_ITEM - you at least have to return ll.

BTW: you should try to recycle the convertView for performance reasons if its not null. See http://www.vogella.com/articles/AndroidListView/article.html for more information about ListAdapters

于 2012-08-21T17:40:49.657 回答