Question

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.database.Cursor;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.ToggleButton;

public class Main extends ListActivity implements OnClickListener  {
    final String [] MyName = new String [1000];
    ArrayList<String> myArr = new ArrayList<String>();
    int i=0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);


        Cursor people = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
        while (people.moveToNext()){
            int NameIndex = people.getColumnIndex(PhoneLookup.DISPLAY_NAME);
            String Name = people.getString(NameIndex);
            MyName[i] = Name.toString();
            myArr.add(Name.toString());
            i++;        
        }
            setListAdapter(new MyAdapter(this, android.R.layout.simple_list_item_1,
                    R.id.textView1,
                    myArr.toArray()));

    }

         class MyAdapter extends ArrayAdapter<String>{

                public MyAdapter(Context context, int resource,
                    int textViewResourceId, Object[] objects) {
                    super(context, resource, textViewResourceId, (String[]) objects);
                    // TODO Auto-generated constructor stub
                }

                @Override
                public View getView(int position, View convertView, ViewGroup parent) {
                    LayoutInflater inflater =  (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    View row = inflater.inflate(R.layout.custom_view, parent,false);            
                    TextView tv = (TextView) row.findViewById(R.id.textView1);
                    tv.setText(myArr.get(position).toString());
                    return row;
                }
        }

您好我正在尝试在电话目录中实现包含联系人姓名的List myArr 。大小随联系人数量而变化。完成列表创建并添加所有联系人后，我将列表 myArr 传递给seListAdapter函数。此代码中遇到的问题是它在模拟器中启动时显示错误。如何将整个列表myArr传递给方法，然后在inflater textview中单独显示每个名称我搜索了myArr.functions，发现myArr.get（）只返回一个元素

Answer 1

将其转换为以下内容：

(String[]) myArr.toArray(new String[]{});

使用List进行数组转换并将其传递给inflater

1 个答案: