类似各种app内的城市选择

github 地址  ：http://www.jianshu.com/p/b469c6f02754

依赖 ：

compile 'com.zaaach:citypicker:1.1'
這个是效果图，最近在github 上看到的 实现他很简单，添加依赖和权限几行代码就可以实现這个功能
PRivate static final int REQUEST_CODE_PICK_CITY = 233;private TextView resultTV;
resultTV = (TextView) findViewById(R.id.tv_result);findViewById(R.id.btn_select).setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View v) {        startActivityForResult(new Intent(MainActivity.this, CityPickerActivity.class),                REQUEST_CODE_PICK_CITY);    }});
通过onActivityResult  返回选择的那个城市
@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {    if (requestCode == REQUEST_CODE_PICK_CITY && resultCode == RESULT_OK){        if (data != null){            String city = data.getStringExtra(CityPickerActivity.KEY_PICKED_CITY);            resultTV.setText("当前选择：" + city);        }    }}
要实现定位效果  需要去开发平台申请相应的key 
<activity    android:name="com.zaaach.citypicker.CityPickerActivity"    android:screenOrientation="portrait"    android:theme="@style/CityPicker.NoActionBar"    android:windowSoftInputMode="stateHidden|adjustPan" /><meta-data    android:name="com.amap.api.v2.apikey"    android:value="fc827e681a54cc949554a989b55b1e93" />