2 qq3010421 qq3010421 于 2016.03.22 17:32 提问

酷欧天气showProgressDialog();代码报错

第一行代码的酷欧天气ChooseAreaActivity,showProgressDialog();总是显示报错,根据原版的代码修改后依然如此,想知道是什么原因。
以下是代码:
package activity;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.baoyu.coolweather1.R;
import model.City;
import model.CoolWeatherDB;
import model.County;
import model.Province;
import util.HttpCallbackListener;
import util.HttpUtil;
import util.Utility;

public class ChooseAreaActivity extends Activity {
public static final int LEVEL_PROVINCE = 0;
public static final int LEVEL_CITY = 1;
public static final int LEVEL_COUNTY = 2;

private ProgressDialog progressDialog;
private TextView titleText;
private ListView listView;
private ArrayAdapter<String> adapter;
private CoolWeatherDB coolWeatherDB;
private List<String> dataList = new ArrayList<String>();
/*
* 省列表
* */
private List<Province> provinceList;
/*
* 市列表
* */
private List<City> cityList;
/*
* 县列表
* */
private List<County> countyList;
/*
* 选中的省份
* */
private Province selectedProvince;
/*
* 选中的城市
* */
private City selectedCity;
/*
* 当前选中的级别
* */
private int currentLevel;
/*
* 是否从WeatherActivity中跳转过来
* */
private boolean isFromWeatherActivity;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    isFromWeatherActivity = getIntent().getBooleanExtra("from_weather_activity", false);
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
    //已经选择了城市且不是从WeatherActivity跳转过来,才会直接转到WeatherActivity
    if (prefs.getBoolean("city_selected", false) && !isFromWeatherActivity) {
        Intent intent = new Intent(this, WeatherActivity.class);
        startActivity(intent);
        finish();
        return;
    }
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.choose_area);
    listView = (ListView) findViewById(R.id.list_view);
    titleText = (TextView) findViewById(R.id.title_text);
    adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dataList);
    listView.setAdapter(adapter);
    coolWeatherDB = CoolWeatherDB.getInstance(this);
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View view, int index, long arg3) {
            if (currentLevel == LEVEL_PROVINCE) {
                selectedProvince = provinceList.get(index);
                queryCities();
            } else if (currentLevel == LEVEL_CITY) {
                selectedCity = cityList.get(index);
                queryCounties();
            } else if (currentLevel == LEVEL_COUNTY) {
                String countyCode = countyList.get(index).getCountyCode();
                Intent intent = new Intent(ChooseAreaActivity.this, WeatherActivity.class);
                intent.putExtra("county_code", countyCode);
                startActivity(intent);
                finish();
            }
        }
    });
    queryProvinces();//加载省级数据
}
/*
* 查询全国所有的省,优先从数据库查询,如果没有查询到再去服务器上查询
* */
private void queryProvinces(){
    provinceList = coolWeatherDB.loadProvinces();
    if (provinceList.size() > 0) {
        dataList.clear();
        for (Province province : provinceList) {
            dataList.add(province.getProvinceName());
        }
        adapter.notifyDataSetChanged();
        listView.setSelection(0);
        titleText.setText("中国");
        currentLevel = LEVEL_PROVINCE;
    } else {
        queryFromServer(null, "province");
    }
}
/*
* 查询选中省内所有的市,优先从数据库中查询,如果没有查询到再去服务器上查询
* */

private void queryCities() {
    cityList = coolWeatherDB.loadCities(selectedProvince.getId());
    if (cityList.size() > 0) {
        dataList.clear();
        for (City city : cityList) {
            dataList.add(city.getCityName());
        }
        adapter.notifyDataSetChanged();
        listView.setSelection(0);
        titleText.setText(selectedProvince.getProvinceName());
        currentLevel = LEVEL_CITY;
    } else {
        queryFromServer(selectedProvince.getProvinceCode(), "city");
    }
}
/*
* 查询选中市内所有的县,优先从数据库中查询,如果没有查询到再去服务器上查询
* */

private void queryCounties() {
    countyList = coolWeatherDB.loadCounties(selectedCity.getId());
    if (countyList.size() > 0) {
        dataList.clear();
        for (County county : countyList) {
            dataList.add(county.getCountyName());
        }
        adapter.notifyDataSetChanged();
        listView.setSelection(0);
        titleText.setText(selectedCity.getCityName());
        currentLevel = LEVEL_COUNTY;
    } else {
        queryFromServer(selectedCity.getCityCode(), "county");
    }
}
/*
*根据传入的代号和类型从服务器上查询省市县数据
* */
private void queryFromServer(final String code, final String type) {
    String address;
    if (!TextUtils.isEmpty(code)) {
        address = "http://www.weather.com.cn/data/list3/city" + code + ".xml";
    } else {
        address = "http://www.weather.com.cn/data/list3/city.xml";
    }

    showProgressDialog();
    HttpUtil.sendHttpRequest(address, new HttpCallbackListener() {
        @Override
        public void onFinish(String response) {
            boolean result = false;
            if ("province".equals(type)) {
                result = Utility.handleProvincesResponse(coolWeatherDB, response);
            } else if ("city".equals(type)) {
                result = Utility.handleCitiesResponse(coolWeatherDB, response, selectedProvince.getId());
            } else if ("county".equals(type)) {
                result = Utility.handleCountiesResponse(coolWeatherDB, response,selectedCity.getId());
            }
            if (result) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        closeProgressDialog();
                        if ("province".equals(type)) {
                            queryProvinces();
                        } else if ("city".equals(type)) {
                            queryCities();
                        } else if ("county".equals(type)) {
                            queryCounties();
                        }
                    }
                });
            }
        }

        @Override
        public void onError(Exception e) {
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    closeProgressDialog();
                    Toast.makeText(ChooseAreaActivity.this, "加载失败",Toast.LENGTH_SHORT).show();
                }
            });
        }

    });
}
        /*
        * 显示进度对话框
        * */

private void closeProgressDialog() {
    if (progressDialog == null) {
        progressDialog = new ProgressDialog(this);
        progressDialog.setMessage("正在加载...");
        progressDialog.setCanceledOnTouchOutside(false);
    }
    progressDialog.show();
}
        /*
        * 关闭进度对话框
        * */

private void closeProgressDialog() {
    if (progressDialog != null) {
        progressDialog.dismiss();
    }
}
        /*
        * 捕获Back按键,根据当前的级别来判断,此时应返回市列表、省列表、还是直接退出
        * */

@Override
public void onBackPressed() {
    if (currentLevel == LEVEL_COUNTY) {
        queryCities();
    } else if (currentLevel == LEVEL_CITY) {
        queryProvinces();
    } else {
        if (isFromWeatherActivity) {
            Intent intent = new Intent(this, WeatherActivity.class);
            startActivity(intent);
        }
        finish();
    }
}

}

1个回答

danielinbiti
danielinbiti   Ds   Rxr 2016.03.22 17:39
已采纳
 代码中没有showProgressDialog方法定义

qq3010421
qq3010421 原来我在定义的时候把方法名字写错了
一年多之前 回复
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