Android Open Source - Common-Library City Picker Widget

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License

The source code is released under:
Apache License
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Java Source Code

package com.morgan.library.widget;
/*  ww  w.  jav  a  2 s.  c o m*/
import java.util.ArrayList;
import java.util.List;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import com.morgan.library.R;
import com.morgan.library.utils.FileUtils;
import com.morgan.library.utils.StrUtils;
import com.morgan.library.widget.numberpicker.NumberPicker;
import com.morgan.library.widget.numberpicker.NumberPicker.OnValueChangeListener;

/**
 * ????????????
 * 
 * @author Morgan.Ji
 * 
 */
public class CityPickerWidget extends Dialog {

  private NumberPicker mProvincePicker, mCityPicker, mAreaPicker;
  private TextView mTitleTextView, mFinishBtn;
  private android.view.View.OnClickListener mOnFinishClickListener;
  private boolean mShowValueOnTitle = true;
  private String mTitle;
  private String mProvince, mCity, mArea;
  private List<String> mProvinces = new ArrayList<String>();
  private List<List<String>> mCitys = new ArrayList<List<String>>();
  private List<List<List<String>>> mAreas = new ArrayList<List<List<String>>>();

  private List<String> mCurrentCitys = new ArrayList<String>();
  private List<List<String>> mCurrentCityAreas = new ArrayList<List<String>>();
  private List<String> mCurrentAreas = new ArrayList<String>();

  public CityPickerWidget(Context context) {
    super(context, R.style.picker_dialog);
  }

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.city_picker_dialog);

    mProvinces = FileUtils.getAllProvinces();
    mCitys = FileUtils.getAllCities();
    mAreas = FileUtils.getAllAreas();

    mProvincePicker = (NumberPicker) findViewById(R.id.provincePicker);
    mCityPicker = (NumberPicker) findViewById(R.id.cityPicker);
    mAreaPicker = (NumberPicker) findViewById(R.id.areaPicker);
    mProvincePicker.setMinValue(0);
    mProvincePicker.setOnValueChangedListener(mOnProvinceChangeListener);
    mProvincePicker.setDisplayedValues(mProvinces
        .toArray(new String[mProvinces.size()]));
    mProvincePicker.setMaxValue(mProvinces.size() - 1);
    mProvincePicker.setFocusable(false);
    mProvincePicker.setFocusableInTouchMode(false);
    mProvincePicker.setWrapSelectorWheel(false);
    mProvincePicker.setMaxTextLength(4);
    mProvincePicker.setInputAble(false);

    mCityPicker.setMinValue(0);
    mCityPicker.setFocusable(true);
    mCityPicker.setFocusableInTouchMode(true);
    mCityPicker.setOnValueChangedListener(mOnCityChangeListener);
    mCityPicker.setMaxTextLength(4);
    mCityPicker.setInputAble(false);

    mAreaPicker.setMinValue(0);
    mAreaPicker.setFocusable(true);
    mAreaPicker.setFocusableInTouchMode(true);
    mAreaPicker.setOnValueChangedListener(mOnAreaChangeListener);
    mAreaPicker.setMaxTextLength(4);
    mAreaPicker.setInputAble(false);

    mTitleTextView = (TextView) findViewById(R.id.title);
    mFinishBtn = (TextView) findViewById(R.id.finish);
    mFinishBtn.setOnClickListener(mFinishClickListener);

    int index = 0, cityIndex = 0, areaIndex = 0;
    if (null == mProvince || null == mCity) {
      index = (mProvinces.size() - 1) / 2;
      mCurrentCitys = mCitys.get(index);
      mCurrentCityAreas = mAreas.get(index);
      cityIndex = (mCurrentCitys.size() - 1) / 2;
      mCurrentAreas = mCurrentCityAreas.get(cityIndex);
      areaIndex = (mCurrentAreas.size() - 1) / 2;
      if (areaIndex < 0) {
        areaIndex = 0;
      }
    } else {
      index = mProvinces.indexOf(mProvince);
      if (index < 0) {
        index = (mProvinces.size() - 1) / 2;
      }
      mCurrentCitys = mCitys.get(index);
      cityIndex = mCurrentCitys.indexOf(mCity);
      if (cityIndex < 0) {
        cityIndex = (mCurrentCitys.size() - 1) / 2;
      }
      mCurrentCityAreas = mAreas.get(index);
      mCurrentAreas = mCurrentCityAreas.get(cityIndex);
      areaIndex = mCurrentAreas.indexOf(mArea);
      if (areaIndex < 0) {
        areaIndex = (mCurrentAreas.size() - 1) / 2;
        if (areaIndex < 0) {
          areaIndex = 0;
        }
      }
    }
    mProvince = mProvinces.get(index);
    mCity = mCurrentCitys.get(cityIndex);
    if (mCurrentAreas.size() > 0) {
      mArea = mCurrentAreas.get(areaIndex);
    } else {
      mArea = "";
    }

    mProvincePicker.setValue(index);
    mCityPicker.setDisplayedValues(mCurrentCitys
        .toArray(new String[mCurrentCitys.size()]));
    mCityPicker.setMaxValue(mCurrentCitys.size() - 1);
    mCityPicker.setValue(cityIndex);
    mCityPicker.setWrapSelectorWheel(false);

    mAreaPicker.setDisplayedValues(mCurrentAreas
        .toArray(new String[mCurrentAreas.size()]));
    mAreaPicker
        .setMaxValue(mCurrentAreas.size() > 0 ? mCurrentAreas.size() - 1
            : 0);
    mAreaPicker.setValue(areaIndex);
    mAreaPicker.setWrapSelectorWheel(false);

    if (!StrUtils.isEmpty(mTitle)) {
      mTitleTextView.setText(mTitle);
    }
    updateTitle();
  }

  private android.view.View.OnClickListener mFinishClickListener = new android.view.View.OnClickListener() {

    @Override
    public void onClick(View v) {
      mOnFinishClickListener.onClick(v);
      CityPickerWidget.this.dismiss();
    }
  };

  /**
   * Updates the city wheel
   */
  private void updateCities(List<String> cities) {
    mCityPicker.setValue(0);
    mCityPicker.setMaxValue(0);
    mCityPicker
        .setDisplayedValues(cities.toArray(new String[cities.size()]));
    mCityPicker.setMaxValue(cities.size() - 1);
    mCityPicker.setValue((cities.size() - 1) / 2);
    mCityPicker.invalidate();
    mCity = mCurrentCitys.get((cities.size() - 1) / 2);
    mCurrentAreas = mCurrentCityAreas.get((cities.size() - 1) / 2);
    mCityPicker.setWrapSelectorWheel(false);
    updateAreas(mCurrentAreas);
  }

  /**
   * Updates the area wheel
   */
  private void updateAreas(List<String> areas) {
    mAreaPicker.setValue(0);
    mAreaPicker.setMaxValue(0);
    mAreaPicker.setDisplayedValues(areas.toArray(new String[areas.size()]));
    mAreaPicker.setMaxValue(areas.size() > 0 ? areas.size() - 1 : 0);
    mAreaPicker.setValue(areas.size() > 0 ? (areas.size() - 1) / 2 : 0);
    mAreaPicker.invalidate();
    if (areas.size() > 0) {
      mArea = mCurrentAreas.get((areas.size() - 1) / 2);
    } else {
      mArea = "";
    }
    mAreaPicker.setWrapSelectorWheel(false);
    updateTitle();
  }

  private void updateTitle() {
    if (mShowValueOnTitle) {
      mTitleTextView.setText(mProvince + " " + mCity + " " + mArea);
    }
  }

  private OnValueChangeListener mOnProvinceChangeListener = new OnValueChangeListener() {

    @Override
    public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
      mProvince = mProvinces.get(newVal);
      mCurrentCitys = mCitys.get(newVal);
      mCurrentCityAreas = mAreas.get(newVal);
      updateCities(mCurrentCitys);
    }
  };

  private OnValueChangeListener mOnCityChangeListener = new OnValueChangeListener() {

    @Override
    public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
      mCity = mCurrentCitys.get(newVal);
      mCurrentAreas = mCurrentCityAreas.get(newVal);
      updateAreas(mCurrentAreas);
    }
  };

  private OnValueChangeListener mOnAreaChangeListener = new OnValueChangeListener() {

    @Override
    public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
      mArea = mCurrentAreas.get(newVal);
      updateTitle();
    }
  };

  public void setInitValue(String province, String city, String area) {
    if (null == mProvincePicker) {
      mProvince = province;
      mCity = city;
      mArea = area;
    }
  }

  public String getCurrentValue() {
    return mProvince + " " + mCity + " " + mArea;
  }

  public void setTitle(String title) {
    mTitle = title;
  }

  public void setOnFinishClickListener(
      android.view.View.OnClickListener clickListener) {
    this.mOnFinishClickListener = clickListener;
  }

  public boolean isShowValueOnTitle() {
    return mShowValueOnTitle;
  }

  public void setShowValueOnTitle(boolean mShowValueOnTitle) {
    this.mShowValueOnTitle = mShowValueOnTitle;
  }
}
Java Source Code List
