├── app ├── .gitignore ├── src │ └── main │ │ ├── ic_launcher-web.png │ │ ├── res │ │ ├── drawable-hdpi │ │ │ └── ic_launcher.png │ │ ├── drawable-mdpi │ │ │ └── ic_launcher.png │ │ ├── drawable-xhdpi │ │ │ └── ic_launcher.png │ │ ├── drawable-xxhdpi │ │ │ └── ic_launcher.png │ │ ├── values │ │ │ ├── colors.xml │ │ │ ├── dimens.xml │ │ │ ├── strings.xml │ │ │ └── styles.xml │ │ ├── animator │ │ │ ├── fade_in.xml │ │ │ └── fade_out.xml │ │ ├── layout │ │ │ ├── activity_weather.xml │ │ │ ├── weather_forecast_list_item.xml │ │ │ └── fragment_weather.xml │ │ └── values-w820dp │ │ │ └── dimens.xml │ │ ├── java │ │ └── mu │ │ │ └── node │ │ │ └── rexweather │ │ │ └── app │ │ │ ├── Helpers │ │ │ ├── TemperatureFormatter.java │ │ │ └── DayFormatter.java │ │ │ ├── Models │ │ │ ├── CurrentWeather.java │ │ │ └── WeatherForecast.java │ │ │ ├── Services │ │ │ ├── LocationService.java │ │ │ └── WeatherService.java │ │ │ └── WeatherActivity.java │ │ └── AndroidManifest.xml ├── proguard-rules.txt └── build.gradle ├── settings.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .gitignore ├── gradle.properties ├── LICENSE ├── gradlew.bat ├── README.md └── gradlew /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | *.iml 3 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | -------------------------------------------------------------------------------- /app/src/main/ic_launcher-web.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/vyshane/rex-weather/HEAD/app/src/main/ic_launcher-web.png -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/vyshane/rex-weather/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/drawable-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/vyshane/rex-weather/HEAD/app/src/main/res/drawable-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/drawable-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/vyshane/rex-weather/HEAD/app/src/main/res/drawable-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/drawable-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/vyshane/rex-weather/HEAD/app/src/main/res/drawable-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/drawable-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/vyshane/rex-weather/HEAD/app/src/main/res/drawable-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Thu May 12 18:14:58 WIT 2016 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #33B5E5 4 | #333333 5 | #666666 6 | #999999 7 | -------------------------------------------------------------------------------- /app/src/main/java/mu/node/rexweather/app/Helpers/TemperatureFormatter.java: -------------------------------------------------------------------------------- 1 | package mu.node.rexweather.app.Helpers; 2 | 3 | public class TemperatureFormatter { 4 | 5 | public static String format(float temperature) { 6 | return String.valueOf(Math.round(temperature)) + "°"; 7 | } 8 | } 9 | -------------------------------------------------------------------------------- /app/src/main/res/animator/fade_in.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 9 | -------------------------------------------------------------------------------- /app/src/main/res/animator/fade_out.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_weather.xml: -------------------------------------------------------------------------------- 1 | 8 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | #built application files 2 | *.apk 3 | 4 | # files for the dex VM 5 | *.dex 6 | 7 | # Java class files 8 | *.class 9 | 10 | # generated files 11 | bin/ 12 | gen/ 13 | 14 | # Local configuration file (sdk path, etc) 15 | local.properties 16 | 17 | # Windows thumbnail db 18 | Thumbs.db 19 | 20 | # OSX files 21 | .DS_Store 22 | 23 | # Eclipse project files 24 | .classpath 25 | .project 26 | 27 | # Android Studio 28 | .idea/ 29 | .gradle 30 | build/ 31 | *.iml 32 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 20dp 3 | 20dp 4 | 5 | 30sp 6 | 60sp 7 | 16sp 8 | 8dp 9 | 12sp 10 | 11 | -------------------------------------------------------------------------------- /app/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 120sp 7 | 240sp 8 | 64sp 9 | 32dp 10 | 48sp 11 | 12 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | RexWeather 5 | Weather data by OpenWeatherMap.org 6 | Could not fetch weather data 7 | Could not get current location 8 | Today 9 | Tomorrow 10 | Monday 11 | sky is clear 12 | 19° 13 | 15° 14 | 15 | 16 | -------------------------------------------------------------------------------- /app/proguard-rules.txt: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Applications/Android Studio.app/sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the ProGuard 5 | # include property in project.properties. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} -------------------------------------------------------------------------------- /app/src/main/java/mu/node/rexweather/app/Models/CurrentWeather.java: -------------------------------------------------------------------------------- 1 | package mu.node.rexweather.app.Models; 2 | 3 | public class CurrentWeather extends WeatherForecast { 4 | private final float mTemperature; // Current temperature. 5 | 6 | public CurrentWeather(final String locationName, 7 | final long timestamp, 8 | final String description, 9 | final float temperature, 10 | final float minimumTemperature, 11 | final float maximumTemperature) { 12 | 13 | super(locationName, timestamp, description, minimumTemperature, maximumTemperature); 14 | mTemperature = temperature; 15 | } 16 | 17 | public float getTemperature() { 18 | return mTemperature; 19 | } 20 | } 21 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Settings specified in this file will override any Gradle settings 5 | # configured through the IDE. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | # Default value: -Xmx10248m -XX:MaxPermSize=256m 13 | # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 14 | 15 | # When configured, Gradle will run in incubating parallel mode. 16 | # This option should only be used with decoupled projects. More details, visit 17 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 18 | # org.gradle.parallel=true -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 8 | 13 | 14 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 21 5 | buildToolsVersion "21.1.2" 6 | 7 | defaultConfig { 8 | minSdkVersion 16 9 | targetSdkVersion 21 10 | versionCode 1 11 | versionName "1.0" 12 | } 13 | lintOptions { 14 | disable 'InvalidPackage' 15 | abortOnError false 16 | } 17 | buildTypes { 18 | release { 19 | minifyEnabled false 20 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt' 21 | } 22 | } 23 | } 24 | 25 | dependencies { 26 | compile 'com.android.support:support-v4:21.+' 27 | compile 'io.reactivex:rxjava:1.0.+' 28 | compile 'io.reactivex:rxandroid:0.23.+' 29 | compile 'com.squareup.retrofit:retrofit:1.8.+' 30 | compile 'com.squareup.okio:okio:1.1.+' 31 | compile 'com.squareup.okhttp:okhttp:2.1.+' 32 | compile 'com.squareup.okhttp:okhttp-urlconnection:2.1.+' 33 | compile 'de.keyboardsurfer.android.widget:crouton:1.8.5@jar' 34 | } 35 | -------------------------------------------------------------------------------- /app/src/main/res/layout/weather_forecast_list_item.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 7 | 8 | 14 | 15 | 20 | 21 | 26 | 27 | 32 | 33 | -------------------------------------------------------------------------------- /app/src/main/java/mu/node/rexweather/app/Models/WeatherForecast.java: -------------------------------------------------------------------------------- 1 | package mu.node.rexweather.app.Models; 2 | 3 | public class WeatherForecast { 4 | private final String mLocationName; 5 | private final long mTimestamp; 6 | private final String mDescription; 7 | private final float mMinimumTemperature; 8 | private final float mMaximumTemperature; 9 | 10 | public WeatherForecast(final String locationName, 11 | final long timestamp, 12 | final String description, 13 | final float minimumTemperature, 14 | final float maximumTemperature) { 15 | 16 | mLocationName = locationName; 17 | mTimestamp = timestamp; 18 | mMinimumTemperature = minimumTemperature; 19 | mMaximumTemperature = maximumTemperature; 20 | mDescription = description; 21 | } 22 | 23 | public String getLocationName() { 24 | return mLocationName; 25 | } 26 | 27 | public long getTimestamp() { 28 | return mTimestamp; 29 | } 30 | 31 | public String getDescription() { 32 | return mDescription; 33 | } 34 | 35 | public float getMinimumTemperature() { 36 | return mMinimumTemperature; 37 | } 38 | 39 | public float getMaximumTemperature() { 40 | return mMaximumTemperature; 41 | } 42 | } -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Copyright (c) 2014, Vy-Shane Sin Fat 2 | All rights reserved. 3 | 4 | Redistribution and use in source and binary forms, with or without 5 | modification, are permitted provided that the following conditions are met: 6 | 7 | * Redistributions of source code must retain the above copyright notice, this 8 | list of conditions and the following disclaimer. 9 | 10 | * Redistributions in binary form must reproduce the above copyright notice, 11 | this list of conditions and the following disclaimer in the documentation 12 | and/or other materials provided with the distribution. 13 | 14 | * Neither the name of the {organization} nor the names of its 15 | contributors may be used to endorse or promote products derived from 16 | this software without specific prior written permission. 17 | 18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 22 | FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 | DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 25 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 | OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -------------------------------------------------------------------------------- /app/src/main/java/mu/node/rexweather/app/Helpers/DayFormatter.java: -------------------------------------------------------------------------------- 1 | package mu.node.rexweather.app.Helpers; 2 | 3 | import android.content.Context; 4 | 5 | import java.text.SimpleDateFormat; 6 | import java.util.Date; 7 | 8 | import mu.node.rexweather.app.R; 9 | 10 | /** 11 | * Quick and dirty day formatter helper class. 12 | */ 13 | public class DayFormatter { 14 | private final static long MILLISECONDS_IN_SECONDS = 1000; 15 | private final Context mContext; 16 | 17 | public DayFormatter(Context context) { 18 | mContext = context; 19 | } 20 | 21 | /** 22 | * Format a Unix timestamp into a human readable week day String such as "Today", "Tomorrow" 23 | * and "Wednesday" 24 | */ 25 | public String format(final long unixTimestamp) { 26 | final long milliseconds = unixTimestamp * MILLISECONDS_IN_SECONDS; 27 | String day; 28 | 29 | if (isToday(milliseconds)) { 30 | day = mContext.getResources().getString(R.string.today); 31 | } else if (isTomorrow(milliseconds)) { 32 | day = mContext.getResources().getString(R.string.tomorrow); 33 | } else { 34 | day = getDayOfWeek(milliseconds); 35 | } 36 | 37 | return day; 38 | } 39 | 40 | private String getDayOfWeek(final long milliseconds) { 41 | return new SimpleDateFormat("EEEE").format(new Date(milliseconds)); 42 | } 43 | 44 | private boolean isToday(final long milliseconds) { 45 | final SimpleDateFormat dayInYearFormat = new SimpleDateFormat("yyyyD"); 46 | final String nowHash = dayInYearFormat.format(new Date()); 47 | final String comparisonHash = dayInYearFormat.format(new Date(milliseconds)); 48 | return nowHash.equals(comparisonHash); 49 | } 50 | 51 | private boolean isTomorrow(final long milliseconds) { 52 | final SimpleDateFormat dayInYearFormat = new SimpleDateFormat("yyyyD"); 53 | final int tomorrowHash = Integer.parseInt(dayInYearFormat.format(new Date())) + 1; 54 | final int comparisonHash = Integer.parseInt(dayInYearFormat.format(new Date(milliseconds))); 55 | return comparisonHash == tomorrowHash; 56 | } 57 | } 58 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 6 | 7 | 14 | 15 | 19 | 20 | 26 | 27 | 34 | 35 | 38 | 39 | 42 | 43 | 47 | 48 | -------------------------------------------------------------------------------- /app/src/main/java/mu/node/rexweather/app/Services/LocationService.java: -------------------------------------------------------------------------------- 1 | package mu.node.rexweather.app.Services; 2 | 3 | import android.location.Criteria; 4 | import android.location.Location; 5 | import android.location.LocationListener; 6 | import android.location.LocationManager; 7 | import android.os.Bundle; 8 | import android.os.Looper; 9 | 10 | import rx.Observable; 11 | import rx.Subscriber; 12 | 13 | /** 14 | * Implement an Rx-style location service by wrapping the Android LocationManager and providing 15 | * the location result as an Observable. 16 | */ 17 | public class LocationService { 18 | private final LocationManager mLocationManager; 19 | 20 | public LocationService(LocationManager locationManager) { 21 | mLocationManager = locationManager; 22 | } 23 | 24 | public Observable getLocation() { 25 | return Observable.create(new Observable.OnSubscribe() { 26 | @Override 27 | public void call(final Subscriber subscriber) { 28 | 29 | final LocationListener locationListener = new LocationListener() { 30 | public void onLocationChanged(final Location location) { 31 | subscriber.onNext(location); 32 | subscriber.onCompleted(); 33 | 34 | Looper.myLooper().quit(); 35 | } 36 | 37 | public void onStatusChanged(String provider, int status, Bundle extras) { 38 | } 39 | 40 | public void onProviderEnabled(String provider) { 41 | } 42 | 43 | public void onProviderDisabled(String provider) { 44 | } 45 | }; 46 | 47 | final Criteria locationCriteria = new Criteria(); 48 | locationCriteria.setAccuracy(Criteria.ACCURACY_COARSE); 49 | locationCriteria.setPowerRequirement(Criteria.POWER_LOW); 50 | final String locationProvider = mLocationManager 51 | .getBestProvider(locationCriteria, true); 52 | 53 | Looper.prepare(); 54 | 55 | mLocationManager.requestSingleUpdate(locationProvider, 56 | locationListener, Looper.myLooper()); 57 | 58 | Looper.loop(); 59 | } 60 | }); 61 | } 62 | } -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /app/src/main/res/layout/fragment_weather.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 17 | 18 | 19 | 24 | 25 | 26 | 33 | 34 | 40 | 41 | 46 | 47 | 48 | 49 | 50 | 55 | 56 | 57 | 58 | 59 | 65 | 66 | 67 | 68 | 69 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # RexWeather 2 | 3 | RexWeather is a sample Android Studio project demonstrating the use of 4 | Retrofit and RxJava to interact with web services. 5 | [Link to the blog post](https://vyshane.com/2014/07/02/using-retrofit-and-rxjava-to-interact-with-web-services-on-android/). 6 | 7 | ![RexWeather Screenwhot](https://vyshane.com/images/rexweather.png) 8 | 9 | 10 | ## Retrofit, by Square 11 | 12 | [Retrofit](http://square.github.io/retrofit) is a REST client for Android and 13 | Java. It allows you to turn a REST API into a Java interface by using 14 | annotations to describe the HTTP requests. It can then generate an 15 | implementation of the interface for you. This means that you can go from 16 | `GET /users/{userId}/posts` to `webService.fetchUserPosts(userId)` in a few 17 | lines of code. Retrofit is very easy to use and it integrates well with RxJava. 18 | 19 | 20 | ## RxJava, by Netflix 21 | 22 | [RxJava](https://github.com/Netflix/RxJava) is a Java implementation of Rx, the 23 | Reactive Extensions library from the .NET world. It allows you to compose 24 | asynchronous and event-based programs in a declarative manner. Let's say that 25 | you want to implement something like this: 26 | 27 | * Start observing our current location. When a location change happens, in 28 | parallel, 29 | * Send a web service request A 30 | * Send a web service request B 31 | * Using the result from B, send a web service request C 32 | * When the results for both A and C are back, update the UI 33 | 34 | RxJava allows you to write out your program pretty much as above. It abstracts 35 | out concerns about things like threading, synchronization, thread-safety, 36 | concurrent data structures, and non-blocking I/O. You can tell RxJava to 37 | observe the location changes and perform the web service requests in a 38 | background thread, and pass you the final results in the UI thread. If any 39 | exceptions are thrown at any point in the chain of events, you get told about 40 | it in one convenient place. You're not drowning in a spaghetti of onSuccess and 41 | onError callbacks. You're building pipelines. 42 | 43 | 44 | ## Web Service Calls 45 | 46 | The app uses [OpenWeatherMap](http://openweathermap.org/) to fetch the current 47 | weather as well as the seven day forecast. 48 | 49 | Because of the new policy of [OpenWeatherMap](http://openweathermap.org/), 50 | we need to provide API key to the requests we made. You can see the detailed information 51 | in [here](http://openweathermap.org/faq#error401). Please insert your API key that you get 52 | after register from [OpenWeatherMap](http://openweathermap.org/) to WeatherService.java 53 | 54 | ### Current Weather 55 | 56 | The current weather can be obtained by making a call similar to the following: 57 | 58 | ``` 59 | http://api.openweathermap.org/data/2.5/weather?lat=-31.9522&lon=115.8589&units=metric 60 | ``` 61 | 62 | The returned JSON looks like this: 63 | 64 | ```javascript 65 | { 66 | "coord": { 67 | "lon": 115.86, 68 | "lat": -31.95 69 | }, 70 | "sys": { 71 | "message": 0.1843, 72 | "country": "AU", 73 | "sunrise": 1404602233, 74 | "sunset": 1404638729 75 | }, 76 | "weather": [ 77 | { 78 | "id": 802, 79 | "main": "Clouds", 80 | "description": "scattered clouds", 81 | "icon": "03n" 82 | } 83 | ], 84 | "base": "cmc stations", 85 | "main": { 86 | "temp": 13, 87 | "pressure": 1015, 88 | "humidity": 71, 89 | "temp_min": 13, 90 | "temp_max": 13 91 | }, 92 | "wind": { 93 | "speed": 3.1, 94 | "deg": 300 95 | }, 96 | "rain": { 97 | "3h": 0 98 | }, 99 | "clouds": { 100 | "all": 40 101 | }, 102 | "dt": 1404657000, 103 | "id": 6692202, 104 | "name": "South Perth", 105 | "cod": 200 106 | } 107 | ``` 108 | 109 | ### 7 Day Forecast 110 | 111 | The 7 day forecast can be obtained like so: 112 | 113 | ``` 114 | http://api.openweathermap.org/data/2.5/forecast/daily?lat=-31.9522&lon=115.8589&mode=json&units=metric&cnt=7 115 | ``` 116 | 117 | And the returned JSON looks like this: 118 | 119 | ```javascript 120 | { 121 | "cod": "200", 122 | "message": 0.0094, 123 | "city": { 124 | "id": 2063523, 125 | "name": "South Perth", 126 | "coord": { 127 | "lon": 115.833328, 128 | "lat": -31.933331 129 | }, 130 | "country": "AU", 131 | "population": 0 132 | }, 133 | "cnt": 7, 134 | "list": [ 135 | { 136 | "dt": 1404619200, 137 | "temp": { 138 | "day": 13, 139 | "min": 13, 140 | "max": 13.31, 141 | "night": 13.31, 142 | "eve": 13, 143 | "morn": 13 144 | }, 145 | "pressure": 1016.99, 146 | "humidity": 100, 147 | "weather": [ 148 | { 149 | "id": 501, 150 | "main": "Rain", 151 | "description": "moderate rain", 152 | "icon": "10d" 153 | } 154 | ], 155 | "speed": 7.25, 156 | "deg": 225, 157 | "clouds": 92, 158 | "rain": 4 159 | }, 160 | ] 161 | 162 | // Six more entries ... 163 | 164 | } 165 | ``` 166 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # For Cygwin, ensure paths are in UNIX format before anything is touched. 46 | if $cygwin ; then 47 | [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 48 | fi 49 | 50 | # Attempt to set APP_HOME 51 | # Resolve links: $0 may be a link 52 | PRG="$0" 53 | # Need this for relative symlinks. 54 | while [ -h "$PRG" ] ; do 55 | ls=`ls -ld "$PRG"` 56 | link=`expr "$ls" : '.*-> \(.*\)$'` 57 | if expr "$link" : '/.*' > /dev/null; then 58 | PRG="$link" 59 | else 60 | PRG=`dirname "$PRG"`"/$link" 61 | fi 62 | done 63 | SAVED="`pwd`" 64 | cd "`dirname \"$PRG\"`/" >&- 65 | APP_HOME="`pwd -P`" 66 | cd "$SAVED" >&- 67 | 68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 69 | 70 | # Determine the Java command to use to start the JVM. 71 | if [ -n "$JAVA_HOME" ] ; then 72 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 73 | # IBM's JDK on AIX uses strange locations for the executables 74 | JAVACMD="$JAVA_HOME/jre/sh/java" 75 | else 76 | JAVACMD="$JAVA_HOME/bin/java" 77 | fi 78 | if [ ! -x "$JAVACMD" ] ; then 79 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 80 | 81 | Please set the JAVA_HOME variable in your environment to match the 82 | location of your Java installation." 83 | fi 84 | else 85 | JAVACMD="java" 86 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 87 | 88 | Please set the JAVA_HOME variable in your environment to match the 89 | location of your Java installation." 90 | fi 91 | 92 | # Increase the maximum file descriptors if we can. 93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 94 | MAX_FD_LIMIT=`ulimit -H -n` 95 | if [ $? -eq 0 ] ; then 96 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 97 | MAX_FD="$MAX_FD_LIMIT" 98 | fi 99 | ulimit -n $MAX_FD 100 | if [ $? -ne 0 ] ; then 101 | warn "Could not set maximum file descriptor limit: $MAX_FD" 102 | fi 103 | else 104 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 105 | fi 106 | fi 107 | 108 | # For Darwin, add options to specify how the application appears in the dock 109 | if $darwin; then 110 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 111 | fi 112 | 113 | # For Cygwin, switch paths to Windows format before running java 114 | if $cygwin ; then 115 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 116 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 158 | function splitJvmOpts() { 159 | JVM_OPTS=("$@") 160 | } 161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 163 | 164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 165 | -------------------------------------------------------------------------------- /app/src/main/java/mu/node/rexweather/app/Services/WeatherService.java: -------------------------------------------------------------------------------- 1 | package mu.node.rexweather.app.Services; 2 | 3 | import com.google.gson.annotations.SerializedName; 4 | 5 | import org.apache.http.HttpException; 6 | 7 | import java.util.ArrayList; 8 | import java.util.List; 9 | 10 | import mu.node.rexweather.app.Models.CurrentWeather; 11 | import mu.node.rexweather.app.Models.WeatherForecast; 12 | import retrofit.RequestInterceptor; 13 | import retrofit.RestAdapter; 14 | import retrofit.http.GET; 15 | import retrofit.http.Query; 16 | import rx.Observable; 17 | import rx.functions.Func1; 18 | 19 | public class WeatherService { 20 | // We are implementing against version 2.5 of the Open Weather Map web service. 21 | private static final String WEB_SERVICE_BASE_URL = "http://api.openweathermap.org/data/2.5"; 22 | private static final String API_KEY = "insert your api key here"; 23 | private final OpenWeatherMapWebService mWebService; 24 | 25 | public WeatherService() { 26 | RequestInterceptor requestInterceptor = new RequestInterceptor() { 27 | @Override 28 | public void intercept(RequestInterceptor.RequestFacade request) { 29 | request.addHeader("Accept", "application/json"); 30 | } 31 | }; 32 | 33 | RestAdapter restAdapter = new RestAdapter.Builder() 34 | .setEndpoint(WEB_SERVICE_BASE_URL) 35 | .setRequestInterceptor(requestInterceptor) 36 | .setLogLevel(RestAdapter.LogLevel.FULL) 37 | .build(); 38 | 39 | mWebService = restAdapter.create(OpenWeatherMapWebService.class); 40 | } 41 | 42 | private interface OpenWeatherMapWebService { 43 | @GET("/weather?units=metric&apikey=" + API_KEY) 44 | Observable fetchCurrentWeather(@Query("lon") double longitude, 45 | @Query("lat") double latitude); 46 | 47 | @GET("/forecast/daily?units=metric&cnt=7&apikey=" + API_KEY) 48 | Observable fetchWeatherForecasts( 49 | @Query("lon") double longitude, @Query("lat") double latitude); 50 | } 51 | 52 | public Observable fetchCurrentWeather(final double longitude, 53 | final double latitude) { 54 | return mWebService.fetchCurrentWeather(longitude, latitude) 55 | .flatMap(new Func1>() { 57 | 58 | // Error out if the request was not successful. 59 | @Override 60 | public Observable call( 61 | final CurrentWeatherDataEnvelope data) { 62 | return data.filterWebServiceErrors(); 63 | } 64 | 65 | }).map(new Func1() { 66 | 67 | // Parse the result and build a CurrentWeather object. 68 | @Override 69 | public CurrentWeather call(final CurrentWeatherDataEnvelope data) { 70 | return new CurrentWeather(data.locationName, data.timestamp, 71 | data.weather.get(0).description, data.main.temp, 72 | data.main.temp_min, data.main.temp_max); 73 | } 74 | }); 75 | } 76 | 77 | public Observable> fetchWeatherForecasts(final double longitude, 78 | final double latitude) { 79 | return mWebService.fetchWeatherForecasts(longitude, latitude) 80 | .flatMap(new Func1>() { 82 | 83 | // Error out if the request was not successful. 84 | @Override 85 | public Observable call( 86 | final WeatherForecastListDataEnvelope listData) { 87 | return listData.filterWebServiceErrors(); 88 | } 89 | 90 | }).map(new Func1>() { 91 | 92 | // Parse the result and build a list of WeatherForecast objects. 93 | @Override 94 | public List call(final WeatherForecastListDataEnvelope listData) { 95 | final ArrayList weatherForecasts = 96 | new ArrayList<>(); 97 | 98 | for (WeatherForecastListDataEnvelope.ForecastDataEnvelope data : listData.list) { 99 | final WeatherForecast weatherForecast = new WeatherForecast( 100 | listData.city.name, data.timestamp, data.weather.get(0).description, 101 | data.temp.min, data.temp.max); 102 | weatherForecasts.add(weatherForecast); 103 | } 104 | 105 | return weatherForecasts; 106 | } 107 | }); 108 | } 109 | 110 | /** 111 | * Base class for results returned by the weather web service. 112 | */ 113 | private class WeatherDataEnvelope { 114 | @SerializedName("cod") 115 | private int httpCode; 116 | 117 | class Weather { 118 | public String description; 119 | } 120 | 121 | /** 122 | * The web service always returns a HTTP header code of 200 and communicates errors 123 | * through a 'cod' field in the JSON payload of the response body. 124 | */ 125 | public Observable filterWebServiceErrors() { 126 | if (httpCode == 200) { 127 | return Observable.just(this); 128 | } else { 129 | return Observable.error( 130 | new HttpException("There was a problem fetching the weather data.")); 131 | } 132 | } 133 | } 134 | 135 | /** 136 | * Data structure for current weather results returned by the web service. 137 | */ 138 | private class CurrentWeatherDataEnvelope extends WeatherDataEnvelope { 139 | @SerializedName("name") 140 | public String locationName; 141 | @SerializedName("dt") 142 | public long timestamp; 143 | public ArrayList weather; 144 | public Main main; 145 | 146 | class Main { 147 | public float temp; 148 | public float temp_min; 149 | public float temp_max; 150 | } 151 | } 152 | 153 | /** 154 | * Data structure for weather forecast results returned by the web service. 155 | */ 156 | private class WeatherForecastListDataEnvelope extends WeatherDataEnvelope { 157 | public Location city; 158 | public ArrayList list; 159 | 160 | class Location { 161 | public String name; 162 | } 163 | 164 | class ForecastDataEnvelope { 165 | @SerializedName("dt") 166 | public long timestamp; 167 | public Temperature temp; 168 | public ArrayList weather; 169 | } 170 | 171 | class Temperature { 172 | public float min; 173 | public float max; 174 | } 175 | } 176 | } 177 | -------------------------------------------------------------------------------- /app/src/main/java/mu/node/rexweather/app/WeatherActivity.java: -------------------------------------------------------------------------------- 1 | package mu.node.rexweather.app; 2 | 3 | import android.app.Activity; 4 | import android.app.Fragment; 5 | import android.content.Context; 6 | import android.location.Location; 7 | import android.location.LocationManager; 8 | import android.os.Bundle; 9 | import android.support.v4.widget.SwipeRefreshLayout; 10 | import android.util.Log; 11 | import android.view.LayoutInflater; 12 | import android.view.View; 13 | import android.view.ViewGroup; 14 | import android.widget.ArrayAdapter; 15 | import android.widget.ListView; 16 | import android.widget.TextView; 17 | 18 | import org.apache.http.HttpException; 19 | 20 | import java.util.ArrayList; 21 | import java.util.HashMap; 22 | import java.util.List; 23 | import java.util.concurrent.TimeUnit; 24 | import java.util.concurrent.TimeoutException; 25 | 26 | import de.keyboardsurfer.android.widget.crouton.Crouton; 27 | import de.keyboardsurfer.android.widget.crouton.Style; 28 | import mu.node.rexweather.app.Helpers.DayFormatter; 29 | import mu.node.rexweather.app.Helpers.TemperatureFormatter; 30 | import mu.node.rexweather.app.Models.CurrentWeather; 31 | import mu.node.rexweather.app.Models.WeatherForecast; 32 | import mu.node.rexweather.app.Services.LocationService; 33 | import mu.node.rexweather.app.Services.WeatherService; 34 | import retrofit.RetrofitError; 35 | import rx.Observable; 36 | import rx.Subscriber; 37 | import rx.android.schedulers.AndroidSchedulers; 38 | import rx.functions.Func1; 39 | import rx.functions.Func2; 40 | import rx.schedulers.Schedulers; 41 | import rx.subscriptions.CompositeSubscription; 42 | 43 | /** 44 | * Weather Activity. 45 | *

46 | * This is the main activity for our app. It simply serves as a container for the Weather Fragment. 47 | * We prefer to build our implementation in a fragment because that enables future reuse if, for 48 | * example we build a tablet version of this app. 49 | */ 50 | public class WeatherActivity extends Activity { 51 | 52 | @Override 53 | protected void onCreate(final Bundle savedInstanceState) { 54 | super.onCreate(savedInstanceState); 55 | setContentView(R.layout.activity_weather); 56 | 57 | if (savedInstanceState == null) { 58 | getFragmentManager().beginTransaction() 59 | .add(R.id.container, new WeatherFragment()) 60 | .commit(); 61 | } 62 | } 63 | 64 | /** 65 | * Weather Fragment. 66 | *

67 | * Displays the current weather as well as a 7 day forecast for our location. Data is loaded 68 | * from a web service. 69 | */ 70 | public static class WeatherFragment extends Fragment { 71 | 72 | private static final String KEY_CURRENT_WEATHER = "key_current_weather"; 73 | private static final String KEY_WEATHER_FORECASTS = "key_weather_forecasts"; 74 | private static final long LOCATION_TIMEOUT_SECONDS = 20; 75 | private static final String TAG = WeatherFragment.class.getCanonicalName(); 76 | 77 | private CompositeSubscription mCompositeSubscription; 78 | private SwipeRefreshLayout mSwipeRefreshLayout; 79 | private TextView mLocationNameTextView; 80 | private TextView mCurrentTemperatureTextView; 81 | private ListView mForecastListView; 82 | private TextView mAttributionTextView; 83 | 84 | @Override 85 | public View onCreateView(final LayoutInflater inflater, final ViewGroup container, 86 | final Bundle savedInstanceState) { 87 | mCompositeSubscription = new CompositeSubscription(); 88 | 89 | final View rootView = inflater.inflate(R.layout.fragment_weather, container, false); 90 | mLocationNameTextView = (TextView) rootView.findViewById(R.id.location_name); 91 | mCurrentTemperatureTextView = (TextView) rootView 92 | .findViewById(R.id.current_temperature); 93 | 94 | // Set up list view for weather forecasts. 95 | mForecastListView = (ListView) rootView.findViewById(R.id.weather_forecast_list); 96 | final WeatherForecastListAdapter adapter = new WeatherForecastListAdapter( 97 | new ArrayList(), getActivity()); 98 | mForecastListView.setAdapter(adapter); 99 | 100 | mAttributionTextView = (TextView) rootView.findViewById(R.id.attribution); 101 | mAttributionTextView.setVisibility(View.INVISIBLE); 102 | 103 | // Set up swipe refresh layout. 104 | mSwipeRefreshLayout = (SwipeRefreshLayout) rootView 105 | .findViewById(R.id.swipe_refresh_container); 106 | mSwipeRefreshLayout.setColorSchemeResources(R.color.brand_main, 107 | android.R.color.black, 108 | R.color.brand_main, 109 | android.R.color.black); 110 | mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { 111 | @Override 112 | public void onRefresh() { 113 | updateWeather(); 114 | } 115 | }); 116 | 117 | updateWeather(); 118 | return rootView; 119 | } 120 | 121 | @Override 122 | public void onDestroyView() { 123 | mCompositeSubscription.unsubscribe(); 124 | super.onDestroyView(); 125 | } 126 | 127 | /** 128 | * Provides items for our list view. 129 | */ 130 | private class WeatherForecastListAdapter extends ArrayAdapter { 131 | 132 | public WeatherForecastListAdapter(final List weatherForecasts, 133 | final Context context) { 134 | super(context, 0, weatherForecasts); 135 | } 136 | 137 | @Override 138 | public boolean isEnabled(final int position) { 139 | return false; 140 | } 141 | 142 | @Override 143 | public View getView(final int position, View convertView, final ViewGroup parent) { 144 | ViewHolder viewHolder; 145 | 146 | if (convertView == null) { 147 | final LayoutInflater layoutInflater = LayoutInflater.from(getContext()); 148 | convertView = layoutInflater.inflate(R.layout.weather_forecast_list_item, null); 149 | 150 | viewHolder = new ViewHolder(); 151 | viewHolder.dayTextView = (TextView) convertView.findViewById(R.id.day); 152 | viewHolder.descriptionTextView = (TextView) convertView 153 | .findViewById(R.id.description); 154 | viewHolder.maximumTemperatureTextView = (TextView) convertView 155 | .findViewById(R.id.maximum_temperature); 156 | viewHolder.minimumTemperatureTextView = (TextView) convertView 157 | .findViewById(R.id.minimum_temperature); 158 | convertView.setTag(viewHolder); 159 | } else { 160 | viewHolder = (ViewHolder) convertView.getTag(); 161 | } 162 | 163 | final WeatherForecast weatherForecast = (WeatherForecast) getItem(position); 164 | 165 | final DayFormatter dayFormatter = new DayFormatter(getActivity()); 166 | final String day = dayFormatter.format(weatherForecast.getTimestamp()); 167 | viewHolder.dayTextView.setText(day); 168 | viewHolder.descriptionTextView.setText(weatherForecast.getDescription()); 169 | viewHolder.maximumTemperatureTextView.setText( 170 | TemperatureFormatter.format(weatherForecast.getMaximumTemperature())); 171 | viewHolder.minimumTemperatureTextView.setText( 172 | TemperatureFormatter.format(weatherForecast.getMinimumTemperature())); 173 | 174 | return convertView; 175 | } 176 | 177 | /** 178 | * Cache to avoid doing expensive findViewById() calls for each getView(). 179 | */ 180 | private class ViewHolder { 181 | private TextView dayTextView; 182 | private TextView descriptionTextView; 183 | private TextView maximumTemperatureTextView; 184 | private TextView minimumTemperatureTextView; 185 | } 186 | } 187 | 188 | /** 189 | * Get weather data for the current location and update the UI. 190 | */ 191 | private void updateWeather() { 192 | mSwipeRefreshLayout.setRefreshing(true); 193 | 194 | final LocationManager locationManager = (LocationManager) getActivity() 195 | .getSystemService(Context.LOCATION_SERVICE); 196 | final LocationService locationService = new LocationService(locationManager); 197 | 198 | // Get our current location. 199 | final Observable fetchDataObservable = locationService.getLocation() 200 | .timeout(LOCATION_TIMEOUT_SECONDS, TimeUnit.SECONDS) 201 | .flatMap(new Func1>>() { 202 | @Override 203 | public Observable> call(final Location location) { 204 | final WeatherService weatherService = new WeatherService(); 205 | final double longitude = location.getLongitude(); 206 | final double latitude = location.getLatitude(); 207 | 208 | return Observable.zip( 209 | // Fetch current and 7 day forecasts for the location. 210 | weatherService.fetchCurrentWeather(longitude, latitude), 211 | weatherService.fetchWeatherForecasts(longitude, latitude), 212 | 213 | // Only handle the fetched results when both sets are available. 214 | new Func2, 215 | HashMap>() { 216 | @Override 217 | public HashMap call(final CurrentWeather currentWeather, 218 | final List weatherForecasts) { 219 | 220 | HashMap weatherData = new HashMap(); 221 | weatherData.put(KEY_CURRENT_WEATHER, currentWeather); 222 | weatherData.put(KEY_WEATHER_FORECASTS, weatherForecasts); 223 | return weatherData; 224 | } 225 | } 226 | ); 227 | } 228 | }); 229 | 230 | mCompositeSubscription.add(fetchDataObservable 231 | .subscribeOn(Schedulers.newThread()) 232 | .observeOn(AndroidSchedulers.mainThread()) 233 | .subscribe(new Subscriber>() { 234 | @Override 235 | public void onNext(final HashMap weatherData) { 236 | // Update UI with current weather. 237 | final CurrentWeather currentWeather = (CurrentWeather) weatherData 238 | .get(KEY_CURRENT_WEATHER); 239 | mLocationNameTextView.setText(currentWeather.getLocationName()); 240 | mCurrentTemperatureTextView.setText( 241 | TemperatureFormatter.format(currentWeather.getTemperature())); 242 | 243 | // Update weather forecast list. 244 | final List weatherForecasts = (List) 245 | weatherData.get(KEY_WEATHER_FORECASTS); 246 | final WeatherForecastListAdapter adapter = (WeatherForecastListAdapter) 247 | mForecastListView.getAdapter(); 248 | adapter.clear(); 249 | adapter.addAll(weatherForecasts); 250 | } 251 | 252 | @Override 253 | public void onCompleted() { 254 | mSwipeRefreshLayout.setRefreshing(false); 255 | mAttributionTextView.setVisibility(View.VISIBLE); 256 | } 257 | 258 | @Override 259 | public void onError(final Throwable error) { 260 | mSwipeRefreshLayout.setRefreshing(false); 261 | 262 | if (error instanceof TimeoutException) { 263 | Crouton.makeText(getActivity(), 264 | R.string.error_location_unavailable, Style.ALERT).show(); 265 | } else if (error instanceof RetrofitError 266 | || error instanceof HttpException) { 267 | Crouton.makeText(getActivity(), 268 | R.string.error_fetch_weather, Style.ALERT).show(); 269 | } else { 270 | Log.e(TAG, error.getMessage()); 271 | error.printStackTrace(); 272 | throw new RuntimeException("See inner exception"); 273 | } 274 | } 275 | }) 276 | ); 277 | } 278 | } 279 | } 280 | --------------------------------------------------------------------------------