android wheelview实现三级城市选择

亦余心之所善兮，虽九死其犹未悔。这篇文章主要讲述android wheelview实现三级城市选择相关的知识，希望能为你提供帮助。
很早之前看淘宝就有了ios那种的城市选择控件，当时也看到网友有分享，不过那个写的很烂，后来（大概是去年吧），我们公司有这么一个项目，当时用的还是网上比较流行的那个黑框的那个，感觉特别的丑，然后我在那个开源的wheelview的基础上做封装，用户只需要专心数据的组装即可，然后填充就行，其他的可以不必考虑。
先上下效果图

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接下来说下我的思路：网络请求-数据返回-设置数据-数据填充控件
接下来直接按上面的流程直接上代码：
网络请求我用的本地的json数据

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String address = Utils.readAssert(this, " address.txt" ); AddressModel model = JsonUtil.parseJson(address, AddressModel.class);

然后我们将本地的数据通过InputStream转换为String，并用过Gson将String映射到Model对象中

 public static String readAssert(Context context,String fileName){ String jsonString= " " ; String resultString= " " ; try { InputStream inputStream= context.getResources().getAssets().open(fileName); byte[] buffer= new byte[inputStream.available()]; inputStream.read(buffer); resultString= new String(buffer," utf-8" ); } catch (Exception e) { e.printStackTrace(); } return resultString; }

接下来我们写自定义的Popwindos实现选择城市的弹框

public class ChooseAddressWheel implements MyOnWheelChangedListener {@ Bind(R.id.province_wheel) MyWheelView provinceWheel; @ Bind(R.id.city_wheel) MyWheelView cityWheel; @ Bind(R.id.district_wheel) MyWheelView districtWheel; private Activity context; private View parentView; private PopupWindow popupWindow = null; private WindowManager.LayoutParams layoutParams = null; private LayoutInflater layoutInflater = null; private List< AddressDtailsEntity.ProvinceEntity> province = null; private OnAddressChangeListener onAddressChangeListener = null; public ChooseAddressWheel(Activity context) { this.context = context; init(); }private void init() { layoutParams = context.getWindow().getAttributes(); layoutInflater = context.getLayoutInflater(); initView(); initPopupWindow(); }private void initView() { parentView = layoutInflater.inflate(R.layout.choose_city_layout, null); ButterKnife.bind(this, parentView); provinceWheel.setVisibleItems(7); cityWheel.setVisibleItems(7); districtWheel.setVisibleItems(7); provinceWheel.addChangingListener(this); cityWheel.addChangingListener(this); districtWheel.addChangingListener(this); }private void initPopupWindow() { popupWindow = new PopupWindow(parentView, WindowManager.LayoutParams.MATCH_PARENT, (int) (Utils.getScreenHeight(context) * (2.0 / 5))); popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE); popupWindow.setAnimationStyle(R.style.anim_push_bottom); popupWindow.setBackgroundDrawable(new BitmapDrawable()); popupWindow.setOutsideTouchable(false); popupWindow.setFocusable(true); popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() { public void onDismiss() { layoutParams.alpha = 1.0f; context.getWindow().setAttributes(layoutParams); popupWindow.dismiss(); } }); }private void bindData() { provinceWheel.setViewAdapter(new ProvinceWheelAdapter(context, province)); updateCitiy(); updateDistrict(); }@ Override public void onChanged(MyWheelView wheel, int oldValue, int newValue) { if (wheel = = provinceWheel) { updateCitiy(); //省份改变后城市和地区联动 } else if (wheel = = cityWheel) { updateDistrict(); //城市改变后地区联动 } else if (wheel = = districtWheel) { } }private void updateCitiy() { int index = provinceWheel.getCurrentItem(); List< AddressDtailsEntity.ProvinceEntity.CityEntity> citys = province.get(index).City; if (citys != null & & citys.size() > 0) { cityWheel.setViewAdapter(new CityWheelAdapter(context, citys)); cityWheel.setCurrentItem(0); updateDistrict(); } }private void updateDistrict() { int provinceIndex = provinceWheel.getCurrentItem(); List< ProvinceEntity.CityEntity> citys = province.get(provinceIndex).City; int cityIndex = cityWheel.getCurrentItem(); List< ProvinceEntity.AreaEntity> districts = citys.get(cityIndex).Area; if (districts != null & & districts.size() > 0) { districtWheel.setViewAdapter(new AreaWheelAdapter(context, districts)); districtWheel.setCurrentItem(0); }}public void show(View v) { layoutParams.alpha = 0.6f; context.getWindow().setAttributes(layoutParams); popupWindow.showAtLocation(v, Gravity.BOTTOM, 0, 0); }public void setProvince(List< ProvinceEntity> province) { this.province = province; bindData(); }public void defaultValue(String provinceStr, String city, String arae) { if (TextUtils.isEmpty(provinceStr)) return; for (int i = 0; i < province.size(); i+ + ) { ProvinceEntity provinces = province.get(i); if (provinces != null & & provinces.Name.equalsIgnoreCase(provinceStr)) { provinceWheel.setCurrentItem(i); if (TextUtils.isEmpty(city)) return; List< ProvinceEntity.CityEntity> citys = provinces.City; for (int j = 0; j < citys.size(); j+ + ) { ProvinceEntity.CityEntity cityEntity = citys.get(j); if (cityEntity != null & & cityEntity.Name.equalsIgnoreCase(city)) { cityWheel.setViewAdapter(new CityWheelAdapter(context, citys)); cityWheel.setCurrentItem(j); if (TextUtils.isEmpty(arae)) return; List< ProvinceEntity.AreaEntity> areas = cityEntity.Area; for (int k = 0; k < areas.size(); k+ + ) { ProvinceEntity.AreaEntity areaEntity = areas.get(k); if (areaEntity != null & & areaEntity.Name.equalsIgnoreCase(arae)) { districtWheel.setViewAdapter(new AreaWheelAdapter(context, areas)); districtWheel.setCurrentItem(k); } } } } } } }@ OnClick(R.id.confirm_button) public void confirm() { if (onAddressChangeListener != null) { int provinceIndex = provinceWheel.getCurrentItem(); int cityIndex = cityWheel.getCurrentItem(); int areaIndex = districtWheel.getCurrentItem(); String provinceName = null, cityName = null, areaName = null; List< ProvinceEntity.CityEntity> citys = null; if (province != null & & province.size() > provinceIndex) { ProvinceEntity provinceEntity = province.get(provinceIndex); citys = provinceEntity.City; provinceName = provinceEntity.Name; } List< ProvinceEntity.AreaEntity> districts = null; if (citys != null & & citys.size() > cityIndex) { ProvinceEntity.CityEntity cityEntity = citys.get(cityIndex); districts = cityEntity.Area; cityName = cityEntity.Name; }if (districts != null & & districts.size() > areaIndex) { ProvinceEntity.AreaEntity areaEntity = districts.get(areaIndex); areaName = areaEntity.Name; }onAddressChangeListener.onAddressChange(provinceName, cityName, areaName); } cancel(); }@ OnClick(R.id.cancel_button) public void cancel() { popupWindow.dismiss(); }public void setOnAddressChangeListener(OnAddressChangeListener onAddressChangeListener) { this.onAddressChangeListener = onAddressChangeListener; }

然后通过三个Adapter去设置值，这里展示一个

 public class ProvinceWheelAdapter extends BaseWheelAdapter< AddressDtailsEntity.ProvinceEntity> { public ProvinceWheelAdapter(Context context, List< AddressDtailsEntity.ProvinceEntity> list) { super(context,list); } @ Override protected CharSequence getItemText(int index) { AddressDtailsEntity.ProvinceEntity data = getItemData(index); if(data != null){ return data.Name; } return null; } }

那么在我们的页面中我们怎么用呢？
我们先初始化：

 private void init() { initWheel(); initData(); }

 private void initWheel() { chooseAddressWheel = new ChooseAddressWheel(this); chooseAddressWheel.setOnAddressChangeListener(this); }

接下来设置值了

private void initData() { String address = Utils.readAssert(this, " address.txt" ); AddressModel model = JsonUtil.parseJson(address, AddressModel.class); if (model != null) { AddressDtailsEntity data = model.Result; if (data = = null) return; chooseAddress.setText(data.Province + " " + data.City + " " + data.Area); if (data.ProvinceItems != null & & data.ProvinceItems.Province != null) { chooseAddressWheel.setProvince(data.ProvinceItems.Province); chooseAddressWheel.defaultValue(data.Province, data.City, data.Area); } } }

好了，就写到这里了，有需要的请加我们的群： 278792776或者188716429
最后附上代码下载地址：
https://github.com/xiangzhihong/wheelview-master

【android wheelview实现三级城市选择】