Question

我的适配器：

import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class NewAdapter extends ArrayAdapter<Presenter> {
    Context context;
    List<Presenter> presenterList;
    private LayoutInflater mmInflater;

    public NewAdapter(Context context, List<Presenter> data) {
        super(context, R.layout.listview_item_row_presenters);
        mmInflater = LayoutInflater.from(context);
        this.context = context;
        this.presenterList = data;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View itemView = convertView;
        if (itemView == null) {
            itemView = mmInflater.inflate(R.layout.listview_item_row_presenters, parent, false);
        }


        Presenter currentPresenter = presenterList.get(position);


        ImageView imageView = (ImageView)itemView.findViewById(R.id.imgIcon);
        imageView.setImageBitmap(currentPresenter.getImage());


        TextView titleText = (TextView) itemView.findViewById(R.id.txtTitle);
        titleText.setText(currentPresenter.getName());


        TextView descripText = (TextView) itemView.findViewById(R.id.txtAbout);
        descripText.setText(currentPresenter.getInfo());


        return itemView;
    }               
}

调用＆amp;将适配器设置为ListView

private void populateListView(List<Presenter> presList) {
    ArrayAdapter<Presenter> adapter = new NewAdapter(this.getBaseContext(), presList);
    ListView list = (ListView) findViewById(R.id.listViewPres);
    list.setAdapter(adapter);
}

我有Logcat输出，证明非数据为空或空，非错误或任何东西：/ 我只能猜测它与上下文有关的任何问题。充气机，但它让我不知道为什么

先谢谢你

Answer 1

变化

 super(context, R.layout.listview_item_row_presenters);

与

super(context,  R.layout.listview_item_row_presenters, data); // add data

在构造函数句柄listItem大小中扩展ArrayAdapter，super时，需要将列表传递给构造函数方法

有关示例代码，您可以参阅第2.3节AndroidListView

Android：Array Adapter不显示ListView

1 个答案: