Retrofit+RxJava+lambda使用示例

Retrofit+RxJava+lambda使用示例

废话不说先上Gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.buildscript {    repositories {        jcenter()    }    dependencies {        classpath 'com.android.tools.build:gradle:1.3.0'        classpath 'me.tatarka:gradle-retrolambda:2.4.+'        // NOTE: Do not place your application dependencies here; they belong        // in the individual module build.gradle files    }}allprojects {    repositories {        jcenter()    }}

repositories {    mavenCentral()    maven {       url "http://repo.maven.apache.org/maven2"    }}apply plugin: 'com.android.application'apply plugin: 'retrolambda'android {    compileSdkVersion 23    buildToolsVersion "23.0.2"    compileOptions {        sourceCompatibility JavaVersion.VERSION_1_8        targetCompatibility JavaVersion.VERSION_1_8    }    retrolambda {        System.getenv("JAVA8_HOME")        System.getenv("JAVA7_HOME")        javaVersion JavaVersion.VERSION_1_7    }    defaultConfig {        applicationId "com.as.testkaixin"        minSdkVersion 15        targetSdkVersion 23        versionCode 1        versionName "1.0"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}dependencies {    compile fileTree(include: ['*.jar'], dir: 'libs')    compile 'com.squareup.picasso:picasso:2.5.2'    compile 'com.squareup.retrofit:retrofit:2.0.0-beta2'    compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'    compile 'com.squareup.retrofit:adapter-rxjava:2.0.0-beta2'    compile 'io.reactivex:rxjava:1.1.0'    compile 'io.reactivex:rxandroid:1.1.0'    compile 'com.jakewharton:butterknife:7.0.1'}

2 导入包后首先是Retrofit同步模式访问网络

public static final String API_URL = "https://api.github.com";public static class Contributor {    public final String login;    public final int contributions;    public Contributor(int contributions, String login) {        this.contributions = contributions;        this.login = login;    }}public interface GitHub{    @GET("/repos/{owner}/{repo}/contributors")    Call<List<Contributor>> contributors (@Path("owner") String owner, @Path("repo") String repo);}public static void main(String... args) throws IOException {    Retrofit retrofit = new Retrofit.Builder()            .baseUrl(API_URL)            .addConverterFactory(GsonConverterFactory.create()).build();    GitHub gitHub = retrofit.create(GitHub.class);    Call<List<Contributor>> call = gitHub.contributors("square", "retrofit");    List<Contributor> contributors = call.execute().body();    for (Contributor contributor : contributors) {        System.out.println(contributor.login + " (" + contributor.contributions + ")");    }}

3 其次是Retrofit异步模式访问网络

public static final String API_URL = "https://api.github.com";public static class Contributor {    public final String login;    public final int contributions;    public Contributor(int contributions, String login) {        this.contributions = contributions;        this.login = login;    }}public interface GitHub{    @GET("/repos/{owner}/{repo}/contributors")    Call<List<Contributor>> contributors (@Path("owner") String owner, @Path("repo") String repo);}public static void main(String... args) throws IOException {    Retrofit retrofit = new Retrofit.Builder()            .baseUrl(API_URL)            .addConverterFactory(GsonConverterFactory.create()).build();    GitHub gitHub = retrofit.create(GitHub.class);    Call<List<Contributor>> call = gitHub.contributors("square", "retrofit");    call.enqueue(new Callback<List<Contributor>>() {        @Override        public void onResponse(Response<List<Contributor>> response, Retrofit retrofit) {            List<Contributor> contributors =response.body();            for (Contributor contributor : contributors) {                System.out.println(contributor.login + " (" + contributor.contributions + ")");            }        }        @Override        public void onFailure(Throwable t) {             System.out.println("erro");        }    });}

4 最后是

Retrofit+RxJava+lambda

public static final String API_URL = "https://api.github.com";public static class Contributor {    public final String login;    public final int contributions;    public Contributor(int contributions, String login) {        this.contributions = contributions;        this.login = login;    }}public interface GitHub{    @GET("/repos/{owner}/{repo}/contributors")    Observable<List<Contributor>> contributors (@Path("owner") String owner, @Path("repo") String repo);}public static void main(String... args) throws IOException {    Retrofit retrofit = new Retrofit.Builder()            .baseUrl(API_URL)            .addConverterFactory(GsonConverterFactory.create())            .addCallAdapterFactory(RxJavaCallAdapterFactory.create())            .build();    GitHub gitHub = retrofit.create(GitHub.class);    Observable<List<Contributor>> observable = gitHub.contributors("square", "retrofit");    observable.subscribe(new Action1<List<Contributor>>() {        @Override        public void call(List<Contributor> contributors) {            for (Contributor contributor : contributors) {                System.out.println(contributor.login + " (" + contributor.contributions + ")");            }        }    });    System.out.println("================4lambda======================================");    observable.subscribe(contributors -> {        for (Contributor contributor : contributors) {            System.out.println(contributor.login + " (" + contributor.contributions + ")");        }    });    System.out.println("================4lambda from======================================");    observable.subscribe(contributors -> {        Observable.from(contributors)                .subscribe(contributor -> System.out.println(contributor.login + " (" + contributor.contributions + ")"));    });    System.out.println("================4lambda flat Map======================================");    observable.flatMap(contributors -> Observable.from(contributors))             .subscribe(contributor -> System.out.println(contributor.login + " (" + contributor.contributions + ")"));    System.out.println("================4lambda filter======================================");    observable.flatMap(contributors -> Observable.from(contributors))             .filter(contributor -> contributor != null)             .subscribe(contributor -> System.out.println(contributor.login + " (" + contributor.contributions + ")"));    System.out.println("================4lambda get======================================");    observable.flatMap(contributors -> Observable.from(contributors))              .take(5)              .subscribe(contributor -> System.out.println(contributor.login + " (" + contributor.contributions + ")"));    System.out.println("================4lambda doOnNext======================================");    observable.flatMap(contributors -> Observable.from(contributors))            .doOnNext(contributor -> System.out.println("do someThing...."+contributor.getClass().toString()) )            .subscribe(contributor ->System.out.println(contributor.login + " (" + contributor.contributions + ")"));}