Android(安卓)地址选择器仿京东；

控件很简单，上方tab是使用LinearLayout动态添加View，下方就是一个RecyclerView；
目前的数据就三级（省市区\县），选择完成或点击确定就回调结果（Json字符串）；
点击上方的tab可以回选；
....
很简单，主要是代码和思路吧；看一下代码；
public class AddressSelectView extends RelativeLayout {    private LinearLayout tab;    private RecyclerView rv;    private Context mC;    private AddressBean addressBean;//数据源    private List addressDatas; //当前正在选择的数据    private List alreadySelectDatas; //已经选择的数据    public AddressSelectView(Context context) {        super(context);        init(context);    }    public AddressSelectView(Context context, AttributeSet attrs) {        super(context, attrs);        init(context);    }    public AddressSelectView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        init(context);    }    private View rootView;    private void init(Context context) {        mC = context;        rootView = View.inflate(context, R.layout.activity_address_select, this);        tab = rootView.findViewById(R.id.tab);        rv = rootView.findViewById(R.id.rv);        initList();        initData();        initView();    }    private String clickText; //回退时点击的文字    private void initList() {        rootView.findViewById(R.id.tvQ).setOnClickListener(new OnClickListener() {            @Override            public void onClick(View view) {                if (onSelectConfirmListEner != null) onSelectConfirmListEner.onConfirm(new Gson().toJson(alreadySelectDatas));            }        });        setOnTabClickListEner(new OnTabClickListEner() {            @Override            public void onTabClick(View view, int position) {                if (alreadySelectDatas == null || position == tab.getChildCount() - 1) return;                if (alreadySelectDatas.size() > position)                    clickText = alreadySelectDatas.get(position).getName();                if (position == 0) {                    //如果点击第一个，就重新开始选择                    if (alreadySelectDatas != null) alreadySelectDatas.clear();                    tab.removeAllViews();                    addRadioButton("选择省");                    if (addressBean != null) {                        addressAdapter.setDatas(addressBean.getProvince());                    }                } else {                    //如果点击的不是第一个，则刷新数据                    List alreadySelectDatas2 = new ArrayList<>();                    if (alreadySelectDatas.size() >= position) {                        for (int i = 0; i < position; i++) {                            //只保留点击的这个之前的数据；                            alreadySelectDatas2.add(alreadySelectDatas.get(i));                        }                    }                    alreadySelectDatas.clear();                    alreadySelectDatas.addAll(alreadySelectDatas2);                    //使用新的数据重新规划数据源和UI                    tab.removeAllViews();                    for (int j = 0; j < alreadySelectDatas.size(); j++) {                        addRadioButton(alreadySelectDatas.get(j).getName());                    }                    selectPostion(alreadySelectDatas.get(alreadySelectDatas.size() - 1), false);                }            }        });    }    private AddressAdapter addressAdapter;    private void initView() {        addRadioButton("选择省");        rv.setLayoutManager(new LinearLayoutManager(mC));        addressAdapter = new AddressAdapter(mC, null);        rv.setAdapter(addressAdapter);        if (addressBean != null) {            addressAdapter.setDatas(addressBean.getProvince());        }    }    /**     * 初始化数据     * 拿assets下的json文件     */    private void initData() {        StringBuilder jsonSB = new StringBuilder();        try {            BufferedReader addressJsonStream = new BufferedReader(new InputStreamReader(mC.getAssets().open("address.json")));            String line;            while ((line = addressJsonStream.readLine()) != null) {                jsonSB.append(line);            }        } catch (IOException e) {            e.printStackTrace();        }        // 将数据转换为对象        addressBean = new Gson().fromJson(jsonSB.toString(), AddressBean.class);    }    /**     * 添加一个Tab     *     * @param text     * @return     */    private void addRadioButton(String text) {        for (int i = 0; i < tab.getChildCount(); i++) {            ((TextView) tab.getChildAt(i)).setTextColor(getResources().getColor(R.color.textmain));        }        final TextView textView = new TextView(mC);        textView.setTag(tab.getChildCount());        textView.setText(text);        textView.setTextSize(16);        textView.setPadding(20, 0, 0, 0);        textView.setTextColor(getResources().getColor(R.color.textselect));        textView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                if (onTabClickListEner != null)                    onTabClickListEner.onTabClick(textView, (int) textView.getTag());            }        });        tab.addView(textView);    }    /**     * 选择一个位置后     *     * @param data     */    private void selectPostion(AddressBean.AddressItemBean data, boolean isAddData) {        rv.scrollToPosition(0);        if (alreadySelectDatas == null) {            alreadySelectDatas = new ArrayList<>();        }        if (isAddData) alreadySelectDatas.add(data);        if (addressDatas == null) {            addressDatas = new ArrayList<>();        } else {            addressDatas.clear();        }        //修改当前选择的名称        ((TextView) tab.getChildAt(tab.getChildCount() - 1)).setText(data.getName());        if (tab.getChildCount() == 1) {            addRadioButton("选择市");            for (int i = 0; i < addressBean.getCity().size(); i++) {                if (TextUtils.equals(data.getId(), addressBean.getCity().get(i).getAboveId())) {                    addressDatas.add(addressBean.getCity().get(i));                }            }        } else if (tab.getChildCount() == 2) {            addRadioButton("选择区");            for (int i = 0; i < addressBean.getDistrict().size(); i++) {                if (TextUtils.equals(data.getId(), addressBean.getDistrict().get(i).getAboveId())) {                    addressDatas.add(addressBean.getDistrict().get(i));                }            }        }else {            if (onSelectConfirmListEner != null) onSelectConfirmListEner.onConfirm(new Gson().toJson(alreadySelectDatas));        }        addressAdapter.setDatas(addressDatas);    }    private class AddressAdapter extends RecyclerView.Adapter {        private Context context;        private List datas;        public AddressAdapter(Context context, List datas) {            this.context = context;            if (datas == null) {                this.datas = new ArrayList<>();            } else {                this.datas = datas;            }        }        public void setDatas(List datas) {            if (datas == null) {                this.datas = new ArrayList<>();            } else {                this.datas = datas;            }            notifyDataSetChanged();        }        @NonNull        @Override        public Vh onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {            return new Vh(LayoutInflater.from(context).inflate(R.layout.item_address, parent, false));        }        @Override        public void onBindViewHolder(@NonNull Vh holder, final int position) {            holder.tv.setText(datas.get(position).getName());            holder.tv.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    selectPostion(datas.get(position), true);                }            });            //如果用户点击导航条重新选择的话，就标记当前选择过的颜色加深            if (TextUtils.equals(datas.get(position).getName(), clickText)) {                holder.tv.setTextColor(context.getResources().getColor(R.color.textselect));            } else {                holder.tv.setTextColor(context.getResources().getColor(R.color.textmain));            }        }        @Override        public int getItemCount() {            return datas.size();        }        class Vh extends RecyclerView.ViewHolder {            public TextView tv;            public Vh(@NonNull View itemView) {                super(itemView);                tv = itemView.findViewById(R.id.tv);            }        }    }    interface OnTabClickListEner {        void onTabClick(View view, int position);    }    private OnTabClickListEner onTabClickListEner;    private void setOnTabClickListEner(OnTabClickListEner onTabClickListEner) {        this.onTabClickListEner = onTabClickListEner;    }    public interface OnSelectConfirmListEner {        void onConfirm(String s);    }    public OnSelectConfirmListEner onSelectConfirmListEner;    public void setOnSelectConfirmListEner(OnSelectConfirmListEner onSelectConfirmListEner) {        this.onSelectConfirmListEner = onSelectConfirmListEner;    }}
项目在这里：https://github.com/CuiChenbo/AddressSelectView
若是想实现类似的效果，推荐把源代码copy下来，按照自己的UI风格和数据源格式改一下就OK啦；
当然什么代码都不动也可以，就是上面的效果；
把控件放在一个PopupWindow或Dialog中弹出来，选择完成后在隐藏掉；
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