MainActivity.java

/*
 * Copyright (C) 2011 The Android Open Source Project
 * Copyright (C) 2014 Zhenghong Wang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package zh.wang.android.yweathergetter4a_demo;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import zh.wang.android.yweathergetter4a.WeatherInfo;
import zh.wang.android.yweathergetter4a.YahooWeather;
import zh.wang.android.yweathergetter4a.YahooWeatherInfoListener;

public class MainActivity extends Activity implements YahooWeatherInfoListener {

	private ImageView mIvWeather0;
	private TextView mTvWeather0;
	private TextView mTvErrorMessage;
	private TextView mTvTitle;
	private EditText mEtAreaOfCity;
	private Button mBtSearch;
	private Button mBtGPS;
	private LinearLayout mCurrentWeatherInfoLayout;
	private LinearLayout mWeatherInfosLayout;

	private YahooWeather mYahooWeather = YahooWeather.getInstance(5000, true);

    private ProgressDialog mProgressDialog;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_activity_layout);

        mProgressDialog = new ProgressDialog(this);
        mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        
    	mTvTitle = (TextView) findViewById(R.id.textview_title);
		mTvWeather0 = (TextView) findViewById(R.id.textview_weather_info_0);
		mTvErrorMessage = (TextView) findViewById(R.id.textview_error_message);
		mIvWeather0 = (ImageView) findViewById(R.id.imageview_weather_info_0);
		mCurrentWeatherInfoLayout = (LinearLayout) findViewById(R.id.current_weather_info);
        
        mEtAreaOfCity = (EditText) findViewById(R.id.edittext_area);
        
        mBtSearch = (Button) findViewById(R.id.search_button);
        mBtSearch.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				mWeatherInfosLayout.removeAllViews();
				String _location = mEtAreaOfCity.getText().toString();
				if (!TextUtils.isEmpty(_location)) {
					InputMethodManager imm = (InputMethodManager)getSystemService(
	              	      Context.INPUT_METHOD_SERVICE);
	              	imm.hideSoftInputFromWindow(mEtAreaOfCity.getWindowToken(), 0);
	                searchByPlaceName(_location);	
	                showProgressDialog();
				} else {
					Toast.makeText(getApplicationContext(), "location is not inputted", Toast.LENGTH_SHORT).show();
				}
			}
		});
        
        mBtGPS = (Button) findViewById(R.id.gps_button);
        mBtGPS.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				showProgressDialog();
				mWeatherInfosLayout.removeAllViews();
				searchByGPS();
			}
		});

        mWeatherInfosLayout = (LinearLayout) findViewById(R.id.weather_infos);
        
        this.searchByGPS();
    }
    
	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		hideProgressDialog();
		mProgressDialog = null;
		super.onDestroy();
	}

	@Override
	public void gotWeatherInfo(final WeatherInfo weatherInfo, YahooWeather.ErrorType errorType) {
		// TODO Auto-generated method stub
        hideProgressDialog();
        if (weatherInfo != null) {
            setNormalLayout();
            if (mYahooWeather.getSearchMode() == YahooWeather.SEARCH_MODE.GPS) {
                if (weatherInfo.getAddress() != null) {
                    mEtAreaOfCity.setText(YahooWeather.addressToPlaceName(weatherInfo.getAddress()));
                }
            }
            mWeatherInfosLayout.removeAllViews();
            mTvTitle.setText(weatherInfo.getTitle());
            mTvWeather0.setText("====== CURRENT ======" + "\n" +
                    "date: " + weatherInfo.getCurrentConditionDate() + "\n" +
                    "weather: " + weatherInfo.getCurrentText() + "\n" +
                    "temperature in ºC: " + weatherInfo.getCurrentTemp() + "\n" +
                    "wind chill: " + weatherInfo.getWindChill() + "\n" +
                    "wind direction: " + weatherInfo.getWindDirection() + "\n" +
                    "wind speed: " + weatherInfo.getWindSpeed() + "\n" +
                    "Humidity: " + weatherInfo.getAtmosphereHumidity() + "\n" +
                    "Pressure: " + weatherInfo.getAtmospherePressure() + "\n" +
                    "Visibility: " + weatherInfo.getAtmosphereVisibility()
            );
            if (weatherInfo.getCurrentConditionIcon() != null) {
                mIvWeather0.setImageBitmap(weatherInfo.getCurrentConditionIcon());
            }
            for (int i = 0; i < YahooWeather.FORECAST_INFO_MAX_SIZE; i++) {
                final LinearLayout forecastInfoLayout = (LinearLayout)
                        getLayoutInflater().inflate(R.layout.forecastinfo, null);
                final TextView tvWeather = (TextView) forecastInfoLayout.findViewById(R.id.textview_forecast_info);
                final WeatherInfo.ForecastInfo forecastInfo = weatherInfo.getForecastInfoList().get(i);
                tvWeather.setText("====== FORECAST " + (i+1) + " ======" + "\n" +
                        "date: " + forecastInfo.getForecastDate() + "\n" +
                        "weather: " + forecastInfo.getForecastText() + "\n" +
                        "low  temperature in ºC: " + forecastInfo.getForecastTempLow() + "\n" +
                        "high temperature in ºC: " + forecastInfo.getForecastTempHigh() + "\n"
                );
                final ImageView ivForecast = (ImageView) forecastInfoLayout.findViewById(R.id.imageview_forecast_info);
                if (forecastInfo.getForecastConditionIcon() != null) {
                    ivForecast.setImageBitmap(forecastInfo.getForecastConditionIcon());
                }
                mWeatherInfosLayout.addView(forecastInfoLayout);
            }
        } else {
			setNoResultLayout(errorType.name());
        }
	}

	private void setNormalLayout() {
		mTvTitle.setVisibility(View.VISIBLE);
		mCurrentWeatherInfoLayout.setVisibility(View.VISIBLE);
		mWeatherInfosLayout.setVisibility(View.VISIBLE);
		mTvErrorMessage.setVisibility(View.INVISIBLE);
	}
	
	private void setNoResultLayout(String errorMsg) {
		mTvTitle.setVisibility(View.INVISIBLE);
        mWeatherInfosLayout.removeAllViews();
		mWeatherInfosLayout.setVisibility(View.INVISIBLE);
		mCurrentWeatherInfoLayout.setVisibility(View.INVISIBLE);
		mTvErrorMessage.setVisibility(View.VISIBLE);
		mTvErrorMessage.setText("Sorry, no result returned\n" + errorMsg);
	    mProgressDialog.cancel();
	}
	
	private void searchByGPS() {
		mYahooWeather.setNeedDownloadIcons(true);
		mYahooWeather.setUnit(YahooWeather.UNIT.CELSIUS);
		mYahooWeather.setSearchMode(YahooWeather.SEARCH_MODE.GPS);
		mYahooWeather.queryYahooWeatherByGPS(getApplicationContext(), this);
	}
	
	private void searchByPlaceName(String location) {
		mYahooWeather.setNeedDownloadIcons(true);
		mYahooWeather.setUnit(YahooWeather.UNIT.CELSIUS);
		mYahooWeather.setSearchMode(YahooWeather.SEARCH_MODE.PLACE_NAME);
		mYahooWeather.queryYahooWeatherByPlaceName(getApplicationContext(), location, MainActivity.this);
	}
	
	private void showProgressDialog() {
      	if (mProgressDialog != null && mProgressDialog.isShowing()) {
      		mProgressDialog.cancel();
      	}
        mProgressDialog = new ProgressDialog(MainActivity.this);
        mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        mProgressDialog.show();
	}
	
	private void hideProgressDialog() {
		if (mProgressDialog != null && mProgressDialog.isShowing()) {
			mProgressDialog.cancel();
		}
	}
}