Question

有没有办法放置EditText元素，我可以从联系人列表中选择联系人的电话号码。就像在通用的android短信应用程序中一样。（键入电话号码或联系人姓名时自动完成！）。

Answer 1

您是否在http://developer.android.com/resources/tutorials/views/hello-autocomplete.html

检查了Android的自动完成示例

也许您可以调整此示例来添加联系人列表。

Answer 2

Hakan的答案很好，但它与Cursor的使用有关。通常，您可以编写自己的adpater，例如通过扩展ArrayAdapter。在我的应用程序中，适配器必须做很多“奇怪的事情”，比如在db中搜索，然后重新过滤游标，添加其他结果，更改其他... 我做了这样的事情：

public class MyAdapter extends ArrayAdapter {
  private List<String> mObjects; //the "strange Strings"
  private MyHelper dbHelper; // an helper to make query
  private MyFilter mFilter; // my personal filter: this is very important!!
  private final Object mLock=new Object();


  //functions very similar to the ArrayAdapter implementation
@Override
public int getCount() {
return mObjects.size();
}

@Override
public Filter getFilter() {
if (mFilter==null) {
    mFilter=new TeamFilter();
}
return mFilter;
}

@Override
public String getItem(int position) {
return mObjects.get(position);
}

@Override
public int getPosition(String item) {
return mObjects.indexOf(item);
}

  //the trick is here!
  private class MyFilter extends Filter {
    //"constraint" is the string written by the user!
@Override
protected FilterResults performFiltering(CharSequence constraint) {
    FilterResults results=new FilterResults();
        //no constraint => nothing to return
    if ((constraint==null)||(constraint.length()==0)) {
    synchronized (mLock) {
        ArrayList<String> list=new ArrayList<String>();
        results.values=list;
        results.count=list.size();
    }
    }
    else {
    String constr=constraint.toString();

    mObjects= // do what you want to do to populate you suggestion - list
            //( I call the db and change some values)
    results.values=mObjects;
    results.count=mObjects.size();
    }
    return results;
}

@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
    if (results.count>0) {
    notifyDataSetChanged();
    }
    else {
    notifyDataSetInvalidated();
    }
}
  }
}

Android edittext - 选择联系人的电话号码（自动完成）

2 个答案: