底部弹出PopupWindow+地址三级联动，多问题全面分析，详细注释

主要功能：从底部弹出的 PopupWindow，带动画，带灰色背景，在PopupWindow中实现省市区三级联动，并填充textview

先看效果图

1.PopupWindow

      <span style="font-size:18px;">public class PopHelper {
         private Context mContext;
         private PopupWindow pw;
         private CityPicker cityPicker;
         public PopHelper(Context context) {
              mContext = context;
          }
         /**
       * @param view
       * @param itemsOnClick 抛出一个OnClickListener接口
       */
         public void showAddressPop(View view, final Activity activity, View.OnClickListener itemsOnClick) {
             // 设置pw里的点击事件
             LinearLayout addressView = (LinearLayout) View.inflate(mContext, R.layout.pop_address, null);
             Button btnPopAddressCencel = (Button) addressView.findViewById(R.id.btn_pop_address_cencel);
              btnPopAddressCencel.setOnClickListener(itemsOnClick);
             Button btnPopAddressEnter = (Button) addressView.findViewById(R.id.btn_pop_address_enter);
              btnPopAddressEnter.setOnClickListener(itemsOnClick);
              cityPicker = (CityPicker) addressView.findViewById(R.id.citypicker);
             //-2是包裹自己，-1是填充父容器
              pw = new PopupWindow(addressView, -1, -2);
             //先关闭
              colsePopupwindow();
             //必须要设置一个背景
              pw.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
             //点击外边可关闭pw
              pw.setOutsideTouchable(true);
             //pw内可获取焦点
              pw.setFocusable(true);
             // 设置背景颜色变暗
              WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
              lp.alpha = 0.7f;
              activity.getWindow().setAttributes(lp);
             //退出时恢复透明度
              pw.setOnDismissListener(new PopupWindow.OnDismissListener() {
                 @Override
                 public void onDismiss() {
                      WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
                      lp.alpha = 1f;
                      activity.getWindow().setAttributes(lp);
                  }
              });
             //设置动画
              pw.setAnimationStyle(R.style.take_photo_anim);
             //显示。y轴距离底部100是因为部分手机有虚拟按键，所以实际项目中要动态设置
              pw.showAtLocation(view, Gravity.BOTTOM, 0, 100);
          }
         /**
       *
       * @return 获取控件中的地址数据
       */
         public String getAddressData() {
             String cData = cityPicker.getCity_string();
             return cData;
          }
         /**
       * 关闭pw
       */
         public void colsePopupwindow() {
             if (pw != null && pw.isShowing()) {
                  pw.dismiss();
                  pw = null;
              }
          }
      }</span>
  
 

pop_enter_anim.xml

      <span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
      <set xmlns:android="http://schemas.android.com/apk/res/android">
       <translate
         android:duration="200"
         android:fromYDelta="100%p"
         android:toYDelta="0" />
       <alpha
         android:duration="200"
         android:fromAlpha="0.0"
         android:toAlpha="1.0" />
      </set></span>
  
 

      <span style="font-size:18px;"><?xml version="1.0" encoding="utf-8"?>
      <set xmlns:android="http://schemas.android.com/apk/res/android">
       <translate
         android:duration="200"
         android:fromYDelta="0"
         android:toYDelta="50%p" />
       <alpha
         android:duration="200"
         android:fromAlpha="1.0"
         android:toAlpha="0.0" />
      </set> </span>
  
 

记得copy  styles文件中的style

      <span style="font-size:18px;">public class MainActivity extends AppCompatActivity implements View.OnClickListener {
         private TextView textView1, textView2;
         private Button button1, button2;
         private PopHelper popHelper;//pop
         @Override
         protected void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
              setContentView(R.layout.activity_main);
              textView1 = (TextView) findViewById(R.id.textView1);
              textView2 = (TextView) findViewById(R.id.textView2);
              button1 = (Button) findViewById(R.id.button1);
              button1.setOnClickListener(this);
              button2 = (Button) findViewById(R.id.button2);
              button2.setOnClickListener(this);
          }
         /**
       * 实现popHelper中的item接口
       */
         private View.OnClickListener onClickListener = new View.OnClickListener() {
             @Override
             public void onClick(View v) {
                 switch (v.getId()) {
                     case R.id.btn_pop_address_cencel:
                          popHelper.colsePopupwindow();
                         break;
                     case R.id.btn_pop_address_enter:
                         String addressData = popHelper.getAddressData();
                         if (flag) {
                              textView1.setText(addressData);
                          } else {
                              textView2.setText(addressData);
                          }
                          popHelper.colsePopupwindow();
                         break;
                  }
              }
          };
         boolean flag;//用于pop标记显示,避免多个地方显示却只填充一个textview的情况
         @Override
         public void onClick(View v) {
             switch (v.getId()) {
                 case R.id.button1:
                      popHelper = new PopHelper(getApplicationContext());
                      popHelper.showAddressPop(v, MainActivity.this, onClickListener);
                      flag = true;
                     break;
                 case R.id.button2:
                      popHelper = new PopHelper(getApplicationContext());
                      popHelper.showAddressPop(v, MainActivity.this, onClickListener);
                      flag = false;
                     break;
              }
          }
      }</span>
  
 

首先，在main目录下创建assets文件，并copy城市json数据包

其次，在lib中加入gson包，记得As a lib，或直接

<span style="font-size:18px;">compile 'com.google.code.gson:gson:2.6.2'</span>
 

最后在values文件夹中copy-attrs.xml文件
然后就完美实现了。

代码中都有详细注释

源码下载地址：https://github.com/yechaoa/PopAddress

文章来源: blog.csdn.net，作者：yechaoa，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/yechaoa/article/details/52818287