我正在尝试填充列表视图,其中每行有2个textviews和一个按钮。我认为我几乎可以正常工作但是现在ListView只显示ListView中的1个项目并忽略其他数据。我还有2个xml文件(shelfrow.xml(2个文本字段,1个按钮)和shelflist.xml(包含listview))。 这是我的Shelf.java类的核心代码。 (MyListItemModel是用于存储每本书的类)
List<MyItemModel> myListModel = new ArrayList<MyItemModel>();
try{
JSONArray entries = json.getJSONArray("entries");
for(int i=0;i<entries.length();i++){
MyItemModel item = new MyItemModel();
JSONObject e = entries.getJSONObject(i);
alKey.add(e.getInt("key"));
item.id = i;
item.title = e.getString("title");
item.description = e.getString("description");
myListModel.add(item);
}
}catch(JSONException e) {
Log.e("log_tag", "Error parsing data "+e.toString());
}
//THIS IS THE PROBLEM I THINK - ERROR: The method inflate(int, ViewGroup) in the type LayoutInflater is not applicable for the arguments (int,Shelf)
MyListAdapter adapter = new MyListAdapter(getLayoutInflater().inflate(R.layout.shelfrow,this));
adapter.setModel(myListModel);
setListAdapter(adapter);
lv = getListView();
lv.setTextFilterEnabled(true);
和我的班级MyListAdapter
中的一些代码 @Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView==null){
convertView = renderer;
}
MyListItemModel item = items.get(position);
// replace those R.ids by the ones inside your custom list_item layout.
TextView label = (TextView)convertView.findViewById(R.id.item_title);
label.setText(item.getTitle());
TextView label2 = (TextView)convertView.findViewById(R.id.item_subtitle);
label2.setText(item.getDescription());
Button button = (Button)convertView.findViewById(R.id.btn_download);
button.setOnClickListener(item.listener);
//}
return convertView;
}
答案 0 :(得分:9)
这是因为您在创建View
时夸大了Adapter
。由于您只创建了一次Adapter
,因此您只需要一个View
。 View
中的每个可见行都需要为ListView
充气。
而不是将膨胀的View
传递给MyListAdapter
的构造函数:
MyListAdapter adapter = new MyListAdapter(getLayoutInflater().inflate(R.layout.shelfrow,this));
...
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView == null) {
convertView = renderer;
}
...
}
你的意思:
// Remove the constructor you created that takes a View.
MyListAdapter adapter = new MyListAdapter();
...
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView == null) {
// Inflate a new View every time a new row requires one.
convertView = LayoutInflater.from(context).inflate(R.layout.shelfrow, parent, false);
}
...
}