升级版本，规范格式

README.md

@@ -2,7 +2,10 @@
 
 > 城市三级联动选择控件，直接使用。
 
-![](https://github.com/fanhua1994/WheelPicker/blob/master/image/F67C4C652760636CD9CB18C907299964.png?raw=true)
+
+<div>
+<img width="200px" src="https://github.com/fanhua1994/WheelPicker/blob/master/image/F67C4C652760636CD9CB18C907299964.png?raw=true" />
+</div>
 
 ### 如何引用
 ```
@@ -15,19 +18,17 @@ allprojects {
 ```
 ```
 dependencies {
-        compile 'com.github.fanhua1994:WheelPicker:1.0.1'
+        compile 'com.github.fanhua1994:WheelPicker:1.0.2'
 }
 ```
 
 ### 如何调用
 ```
-WheelPickerPopupWindow wheelPickerPopupWindow = new WheelPickerPopupWindow(MainActivity.this);
-wheelPickerPopupWindow.setListener(new WheelPickerPopupWindow.WheelPickerComfirmListener() {
-
+final CityWheelPickerPopupWindow wheelPickerPopupWindow = new CityWheelPickerPopupWindow(MainActivity.this);
+wheelPickerPopupWindow.setListener(new OnCityWheelComfirmListener() {
     @Override
     public void onSelected(String Province, String City, String District, String PostCode) {
-	Toast.makeText(MainActivity.this,Province + City + District,Toast.LENGTH_LONG).show();
+        Toast.makeText(MainActivity.this,Province + City + District,Toast.LENGTH_LONG).show();
     }
 });
-wheelPickerPopupWindow.show();
 ```

app/src/main/java/com/hengyi/wheelpicker/activity/MainActivity.java

@@ -7,7 +7,8 @@
 import android.widget.Toast;
 
 import com.hengyi.wheelpicker.R;
-import com.hengyi.wheelpicker.ppw.WheelPickerPopupWindow;
+import com.hengyi.wheelpicker.listener.OnCityWheelComfirmListener;
+import com.hengyi.wheelpicker.ppw.CityWheelPickerPopupWindow;
 
 public class MainActivity extends AppCompatActivity {
     private Button button;
@@ -16,9 +17,9 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         button = findViewById(R.id.button);
-        final WheelPickerPopupWindow wheelPickerPopupWindow = new WheelPickerPopupWindow(MainActivity.this);
-        wheelPickerPopupWindow.setListener(new WheelPickerPopupWindow.WheelPickerComfirmListener() {
 
+        final CityWheelPickerPopupWindow wheelPickerPopupWindow = new CityWheelPickerPopupWindow(MainActivity.this);
+        wheelPickerPopupWindow.setListener(new OnCityWheelComfirmListener() {
             @Override
             public void onSelected(String Province, String City, String District, String PostCode) {
                 Toast.makeText(MainActivity.this,Province + City + District,Toast.LENGTH_LONG).show();

wheelpicker/build.gradle

@@ -8,7 +8,7 @@ android {
         minSdkVersion 19
         targetSdkVersion 26
         versionCode 1
-        versionName "1.0.1"
+        versionName "1.0.2"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }

wheelpicker/src/main/assets/province_data.xml

@@ -905,6 +905,12 @@
       <district name="秀英区" zipcode="570000" />
       <district name="其他" zipcode="570000" />
     </city>
+    <city name="三沙市">
+      <district name="西沙县" zipcode="000000" />
+      <district name="中沙县" zipcode="000000" />
+      <district name="南沙县" zipcode="000000" />
+      <district name="其他" zipcode="000000" />
+    </city>
   </province>
   <province name="河北省">
     <city name="保定市">

wheelpicker/src/main/java/com/hengyi/wheelpicker/listener/OnCityWheelComfirmListener.java

@@ -0,0 +1,9 @@
+package com.hengyi.wheelpicker.listener;
+
+/**
+ * Created by Administrator on 2018/2/2.
+ */
+
+public interface OnCityWheelComfirmListener {
+    public void onSelected(String Province, String City, String District, String PostCode);
+}

wheelpicker/src/main/java/com/hengyi/wheelpicker/weight/OnWheelChangedListener.java → wheelpicker/src/main/java/com/hengyi/wheelpicker/listener/OnWheelChangedListener.java

@@ -14,7 +14,9 @@
  *  limitations under the License.
  */
 
-package com.hengyi.wheelpicker.weight;
+package com.hengyi.wheelpicker.listener;
+
+import com.hengyi.wheelpicker.weight.WheelView;
 
 /**
  * Wheel changed listener interface.

wheelpicker/src/main/java/com/hengyi/wheelpicker/weight/OnWheelClickedListener.java → wheelpicker/src/main/java/com/hengyi/wheelpicker/listener/OnWheelClickedListener.java

@@ -14,7 +14,9 @@
  *  limitations under the License.
  */
 
-package com.hengyi.wheelpicker.weight;
+package com.hengyi.wheelpicker.listener;
+
+import com.hengyi.wheelpicker.weight.WheelView;
 
 /**
  * Wheel clicked listener interface.

wheelpicker/src/main/java/com/hengyi/wheelpicker/weight/OnWheelScrollListener.java → wheelpicker/src/main/java/com/hengyi/wheelpicker/listener/OnWheelScrollListener.java

@@ -14,7 +14,9 @@
  *  limitations under the License.
  */
 
-package com.hengyi.wheelpicker.weight;
+package com.hengyi.wheelpicker.listener;
+
+import com.hengyi.wheelpicker.weight.WheelView;
 
 /**
  * Wheel scrolled listener interface.

wheelpicker/src/main/java/com/hengyi/wheelpicker/ppw/WheelPickerPopupWindow.java → wheelpicker/src/main/java/com/hengyi/wheelpicker/ppw/CityWheelPickerPopupWindow.java

@@ -11,22 +11,23 @@
 import android.widget.TextView;
 
 import com.hengyi.wheelpicker.R;
-import com.hengyi.wheelpicker.weight.OnWheelChangedListener;
+import com.hengyi.wheelpicker.listener.OnCityWheelComfirmListener;
+import com.hengyi.wheelpicker.listener.OnWheelChangedListener;
 import com.hengyi.wheelpicker.weight.WheelView;
 import com.hengyi.wheelpicker.weight.adapters.ArrayWheelAdapter;
 
 /**
  * Created by Administrator on 2018/1/3.
  */
 
-public class WheelPickerPopupWindow extends BasePopupWindow implements View.OnClickListener,OnWheelChangedListener {
+public class CityWheelPickerPopupWindow extends BasePopupWindow implements View.OnClickListener,OnWheelChangedListener {
     private View mView;
     private Activity activity;
     private TextView btn_cancel,btn_confirm;
     private WheelView mViewProvince, mViewCity,mViewDistrict;
-    private WheelPickerComfirmListener listener = null;
+    private OnCityWheelComfirmListener listener = null;
 
-    public WheelPickerPopupWindow(Activity activity){
+    public CityWheelPickerPopupWindow(Activity activity){
         this.activity = activity;
         LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         mView = inflater.inflate(R.layout.ppw_wheel_picker_view, null,false);
@@ -88,7 +89,7 @@ public void backgroundAlpha(float bgAlpha) {
         activity.getWindow().setAttributes(lp);
     }
 
-    public void setListener(WheelPickerComfirmListener wheelPickerComfirmListener){
+    public void setListener(OnCityWheelComfirmListener wheelPickerComfirmListener){
         this.listener = wheelPickerComfirmListener;
     }
 
@@ -146,8 +147,4 @@ private void updateCities() {
         mViewCity.setCurrentItem(0);
         updateAreas();
     }
-
-    public interface WheelPickerComfirmListener{
-        public void onSelected(String Province, String City, String District, String PostCode);
-    }
 }

wheelpicker/src/main/java/com/hengyi/wheelpicker/weight/WheelView.java

@@ -15,6 +15,9 @@
 import android.widget.LinearLayout;
 
 import com.hengyi.wheelpicker.R;
+import com.hengyi.wheelpicker.listener.OnWheelChangedListener;
+import com.hengyi.wheelpicker.listener.OnWheelClickedListener;
+import com.hengyi.wheelpicker.listener.OnWheelScrollListener;
 import com.hengyi.wheelpicker.weight.adapters.WheelViewAdapter;
 
 import java.util.LinkedList;