Android 如何在Listview中添加搜索功能？

我的搜索栏有点问题。 我有一个应用程序在某些活动中有一个Listview，Listview中只有字符串。我想在此活动中添加搜索功能。 在过去的几天里，我在网上搜索了一些关于如何创建搜索栏的例子，我找到了很多关于如何创建搜索栏的指南和解释，它们都不能正确地在我的应用程序中工作，而且在大多数应用程序中，它们都没有解释在那里发生的事情背后的逻辑

是否有任何简单的指南/教程可以解释如何创建搜索栏（不管它是在操作栏上还是在布局中），从而将已经存在的字符串列表视图缩小为较小的列表？（例如，如果键入字母“a”，则会显示listview中包含字母“a”的所有字符串）

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提前谢谢

以下代码将帮助您筛选listView的内容

使用如下布局创建SearcView：

ArrayList<String> mListViewArrayList ; <----- which will be used to render data from getView Method
ArrayList<String> mOriginalList ; <----- Which holds original list all the time.

现在，在适配器中创建扩展筛选器的内部私有类：

私有类SearchFilter扩展了筛选器{

//Invoked in a worker thread to filter the data according to the constraint.
@Override
protected FilterResults performFiltering(CharSequence constraint) {
    FilterResults results = new FilterResults();
    if (constraint != null && constraint.length() > 0) {
        ArrayList<String> filterList = new ArrayList<FriendsModel>();
        for (int i = 0; i < mOriginalList.size(); i++) {
            if ((mOriginalList.get(i).toUpperCase())
                    .contains(constraint.toString().toUpperCase())) {
                filterList.add(mOriginalList.get(i));
            }
        }
        results.count = filterList.size();
        results.values = filterList;
    } else {
        results.count = mOriginalList.size();
        results.values = mOriginalList;
    }
    return results;
}


//Invoked in the UI thread to publish the filtering results in the user interface.
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
                              FilterResults results) {
    mListViewArrayList = (ArrayList<String>) results.values;
    notifyDataSetChanged();
    }
}

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我从哪里可以得到您创建的SearchFilter？mSearchFilter是哪个对象的参考？Anjali，非常感谢您的帮助，这段代码帮助了我，在我尝试通过web找到了这么多解决方案之后，thx！！

//Invoked in a worker thread to filter the data according to the constraint.
@Override
protected FilterResults performFiltering(CharSequence constraint) {
    FilterResults results = new FilterResults();
    if (constraint != null && constraint.length() > 0) {
        ArrayList<String> filterList = new ArrayList<FriendsModel>();
        for (int i = 0; i < mOriginalList.size(); i++) {
            if ((mOriginalList.get(i).toUpperCase())
                    .contains(constraint.toString().toUpperCase())) {
                filterList.add(mOriginalList.get(i));
            }
        }
        results.count = filterList.size();
        results.values = filterList;
    } else {
        results.count = mOriginalList.size();
        results.values = mOriginalList;
    }
    return results;
}


//Invoked in the UI thread to publish the filtering results in the user interface.
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
                              FilterResults results) {
    mListViewArrayList = (ArrayList<String>) results.values;
    notifyDataSetChanged();
    }
}

ArrayList<String> mListViewArrayList ; <----- which will be used to render data from getView Method
ArrayList<String> mOriginalList ; <----- Which holds original list all the time.

et_userInput.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
                yourAdapter.getFilter().filter(arg0);
            }

            @Override
            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                                          int arg3) {
            }

            @Override
            public void afterTextChanged(Editable arg0) {

            }
        });