android SearchView + ListView过滤

布局

        android:id="@+id/searchView"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:focusable="true"        android:focusableInTouchMode="true"        android:iconifiedByDefault="false"        android:inputType="textFilter" />    ```initData();

public void onSuccess(int statusCode, String content) {
// TODO Auto-generated method stub
super.onSuccess(statusCode, content);
if (content != null) {
PoliceListBean parseObject = JSON.parseObject(
content, PoliceListBean.class);
if (parseObject.getList() != null) {
mData = parseObject.getList();
mBackData = mData;
}
}

initView

    mSearchView = (SearchView) findViewById(R.id.searchView);    lv = (ListView) findViewById(R.id.lv_police);    findViewById(R.id.ib_police_back).setOnClickListener(            new OnClickListener() {                @Override                public void onClick(View v) {                    // TODO Auto-generated method stub                    finish();                }            });    mSearchView.setIconifiedByDefault(false);    mSearchView.setOnQueryTextListener(this);    mSearchView.setSubmitButtonEnabled(true);    mSearchView.setQueryHint("查找");    //mSearchView.setFocusable(false);    lv.setTextFilterEnabled(true);    mAdapter = new MyAdapter();    lv.setAdapter(mAdapter);

自定义Adapter 并添加过滤``` private class MyAdapter extends BaseAdapter implements Filterable {        private MyFilter mFilter;        @Override        public int getCount() {            return mData.size();        }        @Override        public Object getItem(int position) {            return mData.get(position);        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            if (null == convertView) {                convertView = View.inflate(PoliceActivity.this,                        R.layout.police_item, null);            }            TextView name = (TextView) convertView                    .findViewById(R.id.tv_police_name);            TextView duiName = (TextView) convertView                    .findViewById(R.id.tv_police_duizhang);            TextView number = (TextView) convertView                    .findViewById(R.id.tv_police_number);            name.setText(mData.get(position).getJwsmc());            duiName.setText(mData.get(position).getDzxm());            number.setText(mData.get(position).getPddys() + "");            return convertView;        }        @Override        public Filter getFilter() {            if (null == mFilter) {                mFilter = new MyFilter();            }            return mFilter;        }        // 自定义Filter类        class MyFilter extends Filter {            @Override            // 该方法在子线程中执行            // 自定义过滤规则            protected FilterResults performFiltering(CharSequence constraint) {                FilterResults results = new FilterResults();                List newValues = new ArrayList();                String filterString = constraint.toString().trim()                        .toLowerCase();                // 如果搜索框内容为空，就恢复原始数据                if (TextUtils.isEmpty(filterString)) {                    newValues = mBackData;                } else {                    // 过滤出新数据                    for (ListBean str : mBackData) {                        if (-1 != str.getJwsmc().toLowerCase()                                .indexOf(filterString)) {                            newValues.add(str);                        }                    }                }                results.values = newValues;                results.count = newValues.size();                return results;            }            @Override            protected void publishResults(CharSequence constraint,                    FilterResults results) {                mData = (List) results.values;                if (results.count > 0) {                    mAdapter.notifyDataSetChanged(); // 通知数据发生了改变                } else {                    mAdapter.notifyDataSetInvalidated(); // 通知数据失效                }            }        }    }```需要重写的两个方法，onQueryTextSubmit 是你点击键盘的搜索二字 会触发的方法 直接return false也行。onQueryTextChange 你每输入一个字符就会触发一次，也会刷新一次适配器：``` @Override    public boolean onQueryTextSubmit(String query) {        if (mSearchView != null) {            // 得到输入管理对象            InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);            if (imm != null) {                // 这将让键盘在所有的情况下都被隐藏                imm.hideSoftInputFromWindow(mSearchView.getWindowToken(), 0); // 输入法如果是显示状态，那么就隐藏输入法            }            mSearchView.clearFocus(); // 不获取焦点        }        return true;    }    @Override    public boolean onQueryTextChange(String newText) {        // TODO Auto-generated method stub        if (TextUtils.isEmpty(newText)) {            // 清楚ListView的过滤            mAdapter.getFilter().filter("");            // lv.clearTextFilter();        } else {            // 使用用户输入的内容对ListView的列表项进行过滤            // 主要是这句写上就没黑框了            mAdapter.getFilter().filter(newText);            // lv.setFilterText(newText);        }        return true;    }```![QQ截图20170626163610.png](http://upload-images.jianshu.io/upload_images/5960267-460f7c89f77476f4.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)去除黑色背景不获取焦点无效实时查询动态刷新

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