android:RxJava RxAndroid+Lambda

文章来自:http://blog.youkuaiyun.com/intbird
lib_github:https://github.com/ReactiveX/RxAndroid
github:https://github.com/intbird/ANDIntbirdRxjava

1,grade config

     compile 'io.reactivex:rxandroid:1.0.1'
     compile 'io.reactivex:rxjava:1.0.14'

2

1->sample just

private void just(){
        Observable<String> myObser = Observable.just("hello ","intbird ");

        Action1<String> actionCallNext = new Action1<String>() {
            @Override
            public void call(String s) {
                Log.d(TAG,s);
            }
        };

        Action1<Throwable> actionOnError = new Action1<Throwable>() {
            @Override
            public void call(Throwable throwable) {
                Log.d(TAG,throwable.toString());
            }
        };

        Action0 actionComplet = new Action0(){
            @Override
            public void call() {
            }
        };
        myObser.subscribe(actionCallNext,actionOnError,actionComplet);
    }

    private void justMapStr(){
        Observable<String> myObser = Observable.just("hello ");

        Action1 action1 =  new Action1<String>() {
            @Override
            public void call(String s) {
                Log.d(TAG,s);
            }
        };
        Func1<String,Object> func1 = new Func1<String, Object>() {
            @Override
            public Object call(String s) {
                return s+"intbird";
            }
        };
        myObser.map(func1).subscribe(action1);
    }

    private void justMapInt(){
        Observable<String> myObser = Observable.just("hello ");

        Action1 action1 =  new Action1<Integer>() {
            @Override
            public void call(Integer s) {
                Log.d(TAG,s+"");
            }
        };
        Func1<String,Integer> func1 = new Func1<String, Integer>() {
            @Override
            public Integer call(String s) {
                return s.hashCode();
            }
        };
        myObser.map(func1).subscribe(action1);
    }

    private void justSubscriber() {

        Observable<String> myObservable = Observable.just("hello");

        Subscriber<String> mySubscriber = new Subscriber<String>() {
            @Override
            public void onCompleted() {

            }

            @Override
            public void onError(Throwable e) {

            }

            @Override
            public void onNext(String s) {
                Log.d(TAG,s);
            }
        };

        myObservable.subscribe(mySubscriber);
    }

3,list flatmap

Func1 func1 = new Func1<List<String>, Observable<String>>() {
            @Override
            public Observable<String> call(List<String> strings) {
                return Observable.from(strings);
            }
        };

        Func1 func11 = new Func1<String, Observable<?>>() {
            @Override
            public Observable<?> call(String s) {
                return Observable.just(s);
            }
        };

        Func1 func111 =  new Func1<String, Boolean>() {
            @Override
            public Boolean call(String s) {
                return s != null;
            }
        };

        Action1<String> action1 = new Action1<String>() {
            @Override
            public void call(String s) {
                Log.d(TAG,"flatMap "+ s);
            }
        };

        query("hello","_","intbird",null,null,"notnull")
                .flatMap(func1)
                .flatMap(func11)
                .filter(func111)
                .take(5)
                .doOnNext(new Action1() {
                    @Override
                    public void call(Object o) {
                        Log.d(TAG,"save data = " +o.toString());
                    }
                })
                .subscribe(action1);

2->

public class RxOperatorActivity extends AppCompatActivity {

    private String TAG = "RxActivityTag";

    TextView tvHello;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_rx);
        tvHello = (TextView)findViewById(R.id.tv_hello);

        //TODO///////基本操作;
        //just();//直接简单创建Observer;
        defalutSubscriber(Observable.just(1l));

        //create();//自定义创建Observer;
        defalutSubscriber(Observable.create(subscriber -> {
            subscriber.onNext(1l);
            subscriber.onCompleted();
        }));

        //range();//Integer
        //defalutSubscriber(Observable.range(10, 5));

        //defer();//到next时才去获取表达式的值,timeMills为next中计算的值;
        defalutSubscriber(Observable.defer(() -> Observable.just(System.currentTimeMillis())));

        //from();//列表
        Long[] integerArray = new Long[]{1l,2l,3l,4l,5l};
        defalutSubscriber(Observable.from(integerArray));

        //interval();//computation scheduler,3秒一次,持续发送
        defalutSubscriber(Observable.interval(3, TimeUnit.SECONDS));

        //timer();//3秒后发送,延迟发送一次;
        defalutSubscriber(Observable.timer(3, TimeUnit.SECONDS));

        //repeat();//重复n次发送当前结果;
        defalutSubscriber(Observable.just(1l).repeat(3));

        //TODO/数据分组和修改;
        //buffer();//收到n个数据后才开始发送[普通对象和值],中途可以跳过m个数据
        //隔2个数字发出前一个数字
        Observable<List<Integer>> buffer = Observable.just(1, 2, 3).buffer(1, 2);
        //每隔3秒钟输出2~4个数字
        Observable.interval(1, TimeUnit.SECONDS).buffer(3, TimeUnit.SECONDS);

        //window();//收到n个数据后才开始发送[Observer对象];
        //隔2个数字发出前一个数字
        Observable<Observable<Integer>> window = Observable.just(1, 2, 3).window(1, 2);
        //每隔3秒钟输出2~4个Observer对象;
        Observable.interval(1,TimeUnit.SECONDS).window(3, TimeUnit.SECONDS);

        //groupBy();分组 1,2,3,4,5,6,7,8,9 -> (1,3,5.7)(2,4,6,8)
        //Observable.just(1,2,3,4,5).groupBy();

        //flatMap();
        // 将之前的observer进行转换成我们需要的类型的observer;
        defalutSubscriber(Observable.just(1, 2, 3, 4, 5)
                .flatMap(integer -> Observable.just((long) integer)));

        //flatMapIterable();
        //将之前的observer进行转换成Iterator;
        Observable.just(1,2,3,4,5)
                .flatMapIterable(integer -> {
                    ArrayList<Integer> list = new ArrayList<>();
                    for (int i = 0; i < integer; i++) {
                        list.add(i);
                    }
                    return list;
                });

        //map(); //数据修改,任意转换;
        defalutSubscriber(Observable.just(1, 2, 3, 4, 5).map(integer -> (long) integer));

        //cast();//数据修改,类型转换,将Integer转换为Long类型;
        defalutSubscriber(Observable.just(1).cast(Long.class));

        //scan();//应用一个表达式,返回表达式之后的值; ((1+2)+3)+...
        defalutSubscriber(Observable.just(1l, 2l, 3l).scan((aLong1, aLong2) -> aLong1 + aLong2));

        //TODO应用规则舍或弃保留数据
        //throttleWithTimeout();//两次数据发送间隔小于200毫秒的数据将被丢弃;
        Observable.just(1,2,3,4,5).throttleWithTimeout(200, TimeUnit.MILLISECONDS);

        //dedounce();//两次发送数据的间隔小于200毫秒的数据将被丢弃;
        Observable.just(1,2,3,4,5).debounce(200, TimeUnit.MILLISECONDS);
        //dedounce();//如果返回当前数据时,上次的计算还在进行,那么丢弃上次计算,计算该次数据,依次do this;
        Observable.just(1,2,3,4,5).debounce(integer -> Observable.create(subscriber -> {
            subscriber.onNext(integer);
            subscriber.onCompleted();
        }));

        //distinctObserver();//去除 所有重复 数据;
        defalutSubscriber(Observable.just(1l,2l,3l,4l,5l,4l,3l,2l,1l).distinct());
        //distinctUntilChanged;//去除 连续重复 数据;
        defalutSubscriber(Observable.just(1l, 2l, 3l, 4l, 5l, 4l, 4l, 2l, 2l).distinctUntilChanged());

        //elementAt();//获取指定位置的数据;
        defalutSubscriber(Observable.just(1l,2l,3l).elementAt(2));

        //take();//保留前两个数据,舍弃其他;
        defalutSubscriber(Observable.just(1l,2l,3l).take(2));

        //skip();//舍弃前两个数据,保留其他;
        defalutSubscriber(Observable.just(1l, 2l, 3l).skip(2));

        //filter();//根据条件过滤;
        defalutSubscriber(Observable.just(1l, 2l, 3l).filter(i -> i > 1l));

        //first();//符合条件的第一条数据;
        defalutSubscriber(Observable.just(1l, 2l, 3l).first());

        //BlockingObservable();//阻塞Observer,满足条件时才会发射;
        BlockingObservable<Long> longBlockingObservable = Observable.just(1l,2l,3l).toBlocking();
        longBlockingObservable.first();

        //sample(); //类似 throttleLast()
        Observable.just(1l,2l,3l).sample(1000, TimeUnit.SECONDS);

        //throttleLast(); //1秒发射一次,保留第一次的结果; 如 1,2,3,4,5 (1,2)在1秒内完成,那么2将被丢弃;
        Observable.just(1l,2l,3l).throttleLast(1000,TimeUnit.SECONDS);

        //throttleFirst(); //1秒发射一次,保留距离最近的一次操作;如 1,2,3,4,5 (1,2)在1秒内完成,那么1将被丢弃;
        Observable.just(1l,2l,3l).throttleFirst(1000, TimeUnit.SECONDS);


        //combineLast();//可以将2-9个Observer发射的数据组装起来再发射出去;/ ob3 = combine(ob1,ob2,opt); ob3 = combine(oblist,opt);
        defalutSubscriber(Observable.combineLatest(defaultObserver(1l), defaultObserver(2l), (integer, integer2) -> integer + integer2));

        //Join();
        Observable.just("Left-").join(defaultObserver(1l),
                integer -> Observable.just(1),
                integer -> Observable.timer(2000, TimeUnit.MILLISECONDS),
                (i, j) -> i + j
        );

        //merege(); //合并两个observer的结果,如果有错误则终止发送;
        defalutSubscriber(Observable.merge(defaultObserver(1l), defaultObserver(2l)));

        //mergeDelayError();合并两个observer的结果,将过程中的错误放在next最后输出;
        defalutSubscriber(Observable.mergeDelayError(defaultObserver(1l), defaultObserver(2l)));

        //startWith();//输出顺序为 -1 0 1;
        defalutSubscriber(defaultObserver(1l).startWith(-1l, 0l));

        //switchOnNext();//结合两个Observer,如果第一个ob的最后一个数据还在计算中发出了第二个ob,那么第一个ob的最后一个数据将被丢弃;
        defalutSubscriber(Observable.switchOnNext(Observable.create(subscriber -> subscriber.onNext(defaultObserver(1l)))));

        //zip(); zipWith();
    }

    private Observable<Long> defaultObserver(long index){
        return Observable.create(subscriber -> {
            subscriber.onNext(index);
            subscriber.onCompleted();
        });
    }

    private void defalutSubscriber(Observable<Long> observable){
        Observable<String> observableStr =
                observable.map(Object::toString)
                .subscribeOn(AndroidSchedulers.mainThread())
                .observeOn(Schedulers.computation());
        observableStr.subscribe(new Subscriber<String>() {
            @Override
            public void onCompleted() {

            }

            @Override
            public void onError(Throwable e) {

            }

            @Override
            public void onNext(String s) {
                tvHello.setText(s);
            }
        });
    }

3->more click go to github:https://github.com/intbird/ANDIntbirdRxjava