Java tutorial
/* * $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ * $ $ * $ _oo0oo_ $ * $ o8888888o $ * $ 88" . "88 $ * $ (| -_- |) $ * $ 0\ = /0 $ * $ ___/`-_-'\___ $ * $ .' \\| |$ '. $ * $ / \\||| : |||$ \ $ * $ / _||||| -:- |||||- \ $ * $ | | \\\ - $/ | | $ * $ | \_| ''\- -/'' |_/ | $ * $ \ .-\__ '-' ___/-. / $ * $ ___'. .' /-_._-\ `. .'___ $ * $ ."" '< `.___\_<|>_/___.' >' "". $ * $ | | : `- \`.;`\ _ /`;.`/ - ` : | | $ * $ \ \ `_. \_ __\ /__ _/ .-` / / $ * $ =====`-.____`.___ \_____/___.-`___.-'===== $ * $ `=-_-=' $ * $ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ $ * $ $ * $ Buddha Bless Never Bug $ * $ $ * $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ * * Copyright (C) 2014 The Android Open Source Project * * 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 com.jackie.sunshine.app; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.support.v4.view.MenuItemCompat; import android.support.v7.widget.ShareActionProvider; import android.text.TextUtils; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import com.jackie.sunshine.app.data.WeatherContract; /** * A simple {@link Fragment} subclass. */ public class DetailFragment extends Fragment implements LoaderManager.LoaderCallbacks<Cursor> { private static final String TAG = "DetailFragment"; public static final String DETAIL_URI = "URI"; private static final String FORECAST_SHARE_HASHTAG = " #SunshineApp"; public static final int DETAIL_LOAD_ID = 0x3e9; private static final String[] DETAIL_COLUMS = { //In this case the id needs to be fully qualified with a table name, since //the content provider joins the location & weather tables in the background // (both have an _id column) // On one hand, that's annoying. On the other, You can search the weather table // using the location set by the user, which is only in the Location table. // So the convenience is worth it. WeatherContract.WeatherEntry.TABLE_NAME + "." + WeatherContract.WeatherEntry._ID, WeatherContract.WeatherEntry.COLUMN_DATE, WeatherContract.WeatherEntry.COLUMN_SHORT_DESC, WeatherContract.WeatherEntry.COLUMN_MAX_TEMP, WeatherContract.WeatherEntry.COLUMN_MIN_TEMP, WeatherContract.WeatherEntry.COLUMN_HUMIDITY, WeatherContract.WeatherEntry.COLUMN_PRESSURE, WeatherContract.WeatherEntry.COLUMN_WIND_SPEED, WeatherContract.WeatherEntry.COLUMN_DEGREES, WeatherContract.WeatherEntry.COLUMN_WEATHER_ID, // This works because the WeatherProvider returns location data joined with // weather data, even though they're stored in two different tables. WeatherContract.LocationEntry.COLUMN_LOCATION_SETTING }; public static final int COL_WEATHER_ID = 0; public static final int COL_WEATHER_DATE = 1; public static final int COL_WEATHER_DESC = 2; public static final int COL_WEATHER_MAX_TEMP = 3; public static final int COL_WEATHER_MIN_TEMP = 4; public static final int COL_WEATHER_HUMIDITY = 5; public static final int COL_WEATHER_PRESSURE = 6; public static final int COL_WEATHER_WIND_SPEED = 7; public static final int COL_WEATHER_DEGREES = 8; public static final int COL_WEATHER_CONDITION_ID = 9; private ImageView mIconView; private TextView mTvFriendlyDate; private TextView mTvDate; private TextView mTvDescription; private TextView mTvHighTemp; private TextView mTvLowTemp; private TextView mTvHumidityView; private TextView mTvWindView; private TextView mTvPressure; private String mForecastStr; private ShareActionProvider mShareAction; private Uri mUri; public DetailFragment() { // Required empty public constructor } @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); } public void onLocationChanged(String newLocation) { } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Bundle arguments = getArguments(); if (arguments != null) { mUri = arguments.getParcelable(DetailFragment.DETAIL_URI); } // Inflate the layout for this fragment View rootView = inflater.inflate(R.layout.fragment_detail, container, false); mIconView = (ImageView) rootView.findViewById(R.id.detail_icon); mTvDate = (TextView) rootView.findViewById(R.id.detail_date_text); mTvFriendlyDate = (TextView) rootView.findViewById(R.id.detail_day_text); mTvDescription = (TextView) rootView.findViewById(R.id.detail_forecast_text); mTvHighTemp = (TextView) rootView.findViewById(R.id.detail_high_text); mTvLowTemp = (TextView) rootView.findViewById(R.id.detail_low_text); mTvHumidityView = (TextView) rootView.findViewById(R.id.detail_humidity_text); mTvWindView = (TextView) rootView.findViewById(R.id.detail_wind_text); mTvPressure = (TextView) rootView.findViewById(R.id.detail_pressure_text); return rootView; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { getLoaderManager().initLoader(DETAIL_LOAD_ID, null, this); super.onActivityCreated(savedInstanceState); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.detail_fragment, menu); MenuItem shareMenu = menu.findItem(R.id.action_share); mShareAction = (ShareActionProvider) MenuItemCompat.getActionProvider(shareMenu); if (!TextUtils.isEmpty(mForecastStr)) { mShareAction.setShareIntent(createShareIntent()); } } private Intent createShareIntent() { Intent shareIntent = new Intent(); shareIntent.setAction(Intent.ACTION_SEND); shareIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); shareIntent.putExtra(Intent.EXTRA_TEXT, mForecastStr + FORECAST_SHARE_HASHTAG); shareIntent.setType("text/plain"); return shareIntent; } @Override public Loader<Cursor> onCreateLoader(int id, Bundle args) { if (mUri != null) { return new CursorLoader(getContext(), mUri, DETAIL_COLUMS, null, null, null); } return null; } @Override public void onLoadFinished(Loader<Cursor> loader, Cursor data) { Log.d(TAG, "onLoadFinished: "); if (data == null || !data.moveToFirst()) return; Context context = getContext(); int weatherId = data.getInt(COL_WEATHER_CONDITION_ID); mIconView.setImageResource(Utility.getArtResourceForWeatherCondition(weatherId)); // Read date from cursor and update views for day of week and date long date = data.getLong(COL_WEATHER_DATE); String friendlyDateStr = Utility.getDayName(context, date); String dateStr = Utility.getFormattedMonthDay(context, date); mTvDate.setText(dateStr); mTvFriendlyDate.setText(friendlyDateStr); // Read description from cursor and update view String weatherDescription = data.getString(COL_WEATHER_DESC); mTvDescription.setText(weatherDescription); mIconView.setContentDescription(weatherDescription); boolean isMetric = Utility.isMetric(context); // Read high temperature from cursor and update view String high = Utility.formatTemperature(context, data.getDouble(COL_WEATHER_MAX_TEMP)); mTvHighTemp.setText(high); // Read low temperature from cursor and update view String low = Utility.formatTemperature(context, data.getDouble(COL_WEATHER_MIN_TEMP)); mTvLowTemp.setText(low); // Read humidity from cursor and update view float humidity = data.getFloat(COL_WEATHER_HUMIDITY); mTvHumidityView.setText(getActivity().getString(R.string.format_humidity, humidity)); // Read wind speed and direction from cursor and update view float windSpeedStr = data.getFloat(COL_WEATHER_WIND_SPEED); float windDirStr = data.getFloat(COL_WEATHER_DEGREES); mTvWindView.setText(Utility.getFormattedWind(getActivity(), windSpeedStr, windDirStr)); // Read pressure from cursor and update view float pressure = data.getFloat(COL_WEATHER_PRESSURE); mTvPressure.setText(getString(R.string.format_pressure, pressure)); mForecastStr = String.format("%s - %s - %s/%s", dateStr, weatherDescription, high, low); if (mShareAction != null) { mShareAction.setShareIntent(createShareIntent()); } } @Override public void onLoaderReset(Loader<Cursor> loader) { } }