Android RxJava小结

一、如何使用

在build.gradle中添加依赖

dependencies {
    api 'io.reactivex:rxandroid:1.2.1'
    api 'io.reactivex:rxjava:1.3.0'
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

这里有一个小坑，直接用latest.release没有办法用，不知道为什么

二、代码实现

2.1 使用just+Action1+Action0来实现

 Observable.just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
                    .subscribeOn(Schedulers.io()) // Observable运行的线程
                    .observeOn(AndroidSchedulers.mainThread()) //监听者运行的线程
                    .subscribe(new Action1<Integer>() {
                        //onNext
                        @Override
                        public void call(Integer integer) {
                            log("call 1:" + integer);
                        }
                    }, new Action1<Throwable>() {
                        //onError
                        @Override
                        public void call(Throwable throwable) {
                            log("call 2");
                        }
                    }, new Action0() {
                        //onCompleted
                        @Override
                        public void call() {
                            log("call 3");
                        }
                    });

运行结果如下，很简单，就不一一解释了。

10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:1
10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:2
10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:3
10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:4
10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:5
10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:6
10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:7
10-05 11:05:45.955 23619 23619 E MainActivity: yanlog msg:call 1:8
10-05 11:05:45.956 23619 23619 E MainActivity: yanlog msg:call 1:9
10-05 11:05:45.956 23619 23619 E MainActivity: yanlog msg:call 1:10
10-05 11:05:45.956 23619 23619 E MainActivity: yanlog msg:call 3

 2.2 使用Just+Subscriber来实现

代码如下：

            Observable.just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
                    .subscribeOn(Schedulers.io()) // Observable运行的线程
                    .observeOn(AndroidSchedulers.mainThread()) //监听者运行的线程
                    .subscribe(new Subscriber<Integer>() {
                        @Override
                        public void onCompleted() {
                            log("onCompleted");
                        }

                        @Override
                        public void onError(Throwable e) {
                            log("onError");
                        }

                        @Override
                        public void onNext(Integer integer) {
                            log("onNext:" + integer);
                        }
                    });

运行结果如下：

10-05 19:56:09.991   982   982 E MainActivity: yanlog msg:onNext:1
10-05 19:56:09.991   982   982 E MainActivity: yanlog msg:onNext:2
10-05 19:56:09.991   982   982 E MainActivity: yanlog msg:onNext:3
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onNext:4
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onNext:5
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onNext:6
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onNext:7
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onNext:8
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onNext:9
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onNext:10
10-05 19:56:09.992   982   982 E MainActivity: yanlog msg:onCompleted