在listview上搜索（activity extends ListActivity） [英] Search on listview (activity extends ListActivity)

问题描述

我在我的活动中扩展 ListActivity 并绑定 ListView 。应用过滤器到列表视图。当使用emulater时，过滤器工作正常，因为我有我的笔记本电脑的键盘。但是当我想在android上过滤数据时，问题就出现了，因为它没有向我显示键盘。代码如下。

  String [] Customers = {Alester，Lee，Broad，James }; 
 setListAdapter（new ArrayAdapter< String>（this，R.layout.list_item，Customers））; 
 
 ListView lv = getListView（）; 
 lv.setTextFilterEnabled（true）; 
  

解决方案

把EditText放在某个地方， ，然后添加一个TextWatcher，如：
$ b $ pre $ TextWatcher filterTextWatcher = new TextWatcher（）{

public void afterTextChanged （可编辑的）{
}

public void beforeTextChanged（CharSequence s，int start，int count，int after）{
}

public void onTextChanged（CharSequence s，int start，int before，int count）{
_myAdapter.getFilter（）。filter（s）;
}
};
_filterText =（EditText）findViewById（R.id.search_box）;
_filterText.addTextChangedListener（filterTextWatcher）;


i extend ListActivity and bind ListView in my activity. applied filter to listview. the filter is working fine when use emulater, because i have keyboard of my laptop. but the problem arises when i want to filter data on android because it does not display keyboard to me. code is give below.

String[] Customers = {"Alester","Lee","Broad","James"};
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, Customers));

  ListView lv = getListView();
  lv.setTextFilterEnabled(true); 

解决方案

Put an EditText somewhere, like on top of your listView, then add a TextWatcher like :

    TextWatcher filterTextWatcher = new TextWatcher() {

        public void afterTextChanged(Editable s) {
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void onTextChanged(CharSequence s, int start, int before, int count) {
            _myAdapter.getFilter().filter(s);
        }
    };
    _filterText = (EditText) findViewById(R.id.search_box);
    _filterText.addTextChangedListener(filterTextWatcher);

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