Android ListView复制条目 [英] Android ListView Duplicates entries

问题描述

如果我在活动1的编辑文本中键入 Hello，它将在活动2的列表视图中添加 Hello作为第一个条目（没有错误）。另外，如果我键入 Apple作为第二个条目，我会将 Hello的第一个条目更改为 Apple，并添加新的第二个条目 Apple ...，导致两个条目都变为 Apple和 Apple ...有任何想法吗？

If i type "Hello" in my edittext in activity 1 it will add "Hello" to the listview in activity 2 as the first entry ( which has no error ). Also, if I type "Apple" as my second entry I will change the first entry of "Hello" to "Apple" and add the new 2nd entry "Apple"... causing both entries to become "Apple" and "Apple"... any thoughts?

Act2
@Override
protected void onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState） ;
setContentView（R.layout.activity_argue_list）;

Act2 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_argue_list);

    ListView txtlist = (ListView)findViewById(android.R.id.list);


    Bundle bun = getIntent().getExtras();
     Lrg = bun.getString("Jenny");
     Med = bun.getString("Forest");
     Med2 = bun.getString("Gump");

        KoreyzAdapter add = new KoreyzAdapter();
        txtlist.setAdapter(add);
        list.add(0, Lrg);
        add.notifyDataSetChanged();
        setListAdapter(add);
}
class KoreyzAdapter extends ArrayAdapter<String>{

      public KoreyzAdapter() {
          super(ArgueListActivity.this, android.R.layout.simple_list_item_1, list);
    }
      class ViewHolder{
          TextView who;
          TextView sex;
          TextView cat;
          ImageView pic;

          ViewHolder(View v){
              who = (TextView) v.findViewById(R.id.inputLrgtxt);
              sex = (TextView) v.findViewById(R.id.whoMedtxt);
              cat = (TextView) v.findViewById(R.id.stupidMedtxt);
              pic = (ImageView)v.findViewById(R.id.sexpic);
          }

      }
                public View getView(int position, View convertView, ViewGroup parent) {
                    View row = convertView;
                    ViewHolder holder = null;
                    if(row == null){

                         LayoutInflater inflator = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                        row = inflator.inflate(R.layout.list_item, parent, false);
                        holder = new ViewHolder(row);
                        row.setTag(holder);

                    }else{
                        holder = (ViewHolder)row.getTag();
                    }

                        holder.who.setText(Lrg);
                        holder.sex.setText(Med);
                        holder.cat.setText(Med2);

                        holder.pic.setImageResource(R.drawable.maleandfemale);

                        return row;
                    }

推荐答案

使用ArrayAdapters总是通过布局

With ArrayAdapters always pass the layout of the list row items in the constructor.

示例： TodosAdapter（Context context，int layoutResourceId，List< Todo> todos）;


int layoutResourceId是android.R.layout.simple_list_item_1

Example : TodosAdapter(Context context, int layoutResourceId, List<Todo> todos);
int layoutResourceId is android.R.layout.simple_list_item_1

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