Java tutorial
/* * Copyright (c) 2014 Yehezkel (Zack) Yovel * * 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 zack.yovel.clear.controller.foreground; import android.os.Bundle; import android.support.v4.app.Fragment; import android.text.Html; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import com.google.gson.Gson; import zack.yovel.clear.R; import zack.yovel.clear.infrastructure.model.datapoints.DataPoint; import zack.yovel.clear.infrastructure.model.datapoints.Icon; import zack.yovel.clear.util.ConvertUtil; public class DayFragment extends Fragment { public static final String EXTRA_DATA_POINT = "yovel.zack.clear.EXTRA_DATA_POINT"; private DataPoint dayDataPoint; public static DayFragment getInstance(DataPoint dayDataPoint) { DayFragment result = new DayFragment(); Bundle args = new Bundle(1); Gson gson = new Gson(); String dataPointJson = gson.toJson(dayDataPoint); args.putString(EXTRA_DATA_POINT, dataPointJson); result.setArguments(args); return result; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setDataPoint(); } private void setDataPoint() { Bundle args = getArguments(); Gson gson = new Gson(); String dataPointJson = args.getString(EXTRA_DATA_POINT); dayDataPoint = gson.fromJson(dataPointJson, DataPoint.class); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); initDisplay(); } private void initDisplay() { initTextViews(); initIcon(); } private void initIcon() { // get the view ImageView ivWeatherIcon = (ImageView) getView().findViewById(R.id.ivWeatherIconCurrently); if (ivWeatherIcon != null) { // get the icon String iconName = dayDataPoint.getIcon(); Icon icon = ConvertUtil.iconStringToIconEnum(iconName); // set the icon to the view ivWeatherIcon.setImageResource(icon.resourceId); } } private void initTextViews() { initTemps(); initInfo(); } private void initInfo() { // get the view TextView tvInfo = (TextView) getView().findViewById(R.id.tvInfoCurrently); if (tvInfo != null) { // get the template from the view int templateResourceId = R.string.template_info_day; CharSequence templateTemperatures = getResources().getString(templateResourceId); // format the text String[] placeHolders = getInfoPlaceHolders(); int directionResourceId = ConvertUtil.bearingTo16PointsResourceIds(dayDataPoint.getWindBearing()); String[] values = getInfoValues(directionResourceId); CharSequence info = TextUtils.replace(templateTemperatures, placeHolders, values); // set the text to the view tvInfo.setText(info); } } private String[] getInfoPlaceHolders() { return argsToArray("{humidity}", "{windspeed}", "{windunit}", "{winddir}"); } private String[] getInfoValues(int directionResourceId) { return argsToArray(String.valueOf((int) (dayDataPoint.getHumidity() * 100)), String.valueOf(dayDataPoint.getWindSpeed()), getString(R.string.wind_speed_units), getString(directionResourceId)); } /** * Using the power of variable length arguments * to create a String[] from an arbitrary group of Strings. * * @param args * @return */ private String[] argsToArray(String... args) { return args; } private void initTemps() { // get the view TextView tvTemps = (TextView) getView().findViewById(R.id.tvTempsCurrently); tvTemps.setTextSize(28); if (tvTemps != null) { // get the template int templateResourceId = R.string.template_temperatures_daily; CharSequence templateTemperatures = Html.fromHtml(getResources().getString(templateResourceId)); // format the text String[] placeHolders = getTempsPlaceHolders(); String[] values = getTempsValues(dayDataPoint); CharSequence info = TextUtils.replace(templateTemperatures, placeHolders, values); // set the text to the view tvTemps.setText(info); } } private String[] getTempsValues(DataPoint dataPoint) { return argsToArray(String.valueOf(dataPoint.getTemperatureMin()), String.valueOf(dataPoint.getTemperatureMax())); } private String[] getTempsPlaceHolders() { return argsToArray("{min}", "{max}"); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_current, container, false); return view; } }