Rxjava Common usage examples

I'm not going to tell you exactly how to use it. I'll just upload the case.

Package Com.demo.testRxjava;
Import android.app.Activity;
Import Android.os.Bundle;
Import android.support.annotation.Nullable;

Import Android.view.View;
Import Com.demo.LogUtils;
Import COM.DEMO.R;

Import Com.demo.bean.School;
Import java.io.Serializable;
Import java.util.ArrayList;
Import java.util.List;

Import Java.util.concurrent.TimeUnit; Import Rx.
observable; Import Rx.
Observer; Import Rx.
subscriber;
Import Rx.android.schedulers.AndroidSchedulers;
Import Rx.functions.Action1;
Import rx.functions.Func1;

Import Rx.schedulers.Schedulers;
 /** * Created by Pangw on 2017/12/21. */public class Testrxjava extends activity {@Override protected void onCreate (@Nullable Bundle Savedinstancesta
        TE) {super.oncreate (savedinstancestate);
        Setcontentview (R.layout.activity_rxjava); Findviewbyid (R.ID.BTN). Setonclicklistener (New View.onclicklistener () {@Override public void oncli
          CK (view view) {iniClick17 ();  }
        }); /** * Filtering filter Filter/private void IniClick17 () {observable.just (1,2,3,4,5,6). f Ilter (New Func1<integer, boolean> () {@Override public Boolean call (Integer
                    Integer) {return integer>3;
                    }). Subscribe (New action1<integer> () {@Override
                    public void Call (Integer integer) {logutils.a (integer);

    }
                }); /** * Distinct: Remove duplicate items, better understand: * * private void IniClick16 () {Observable.just ("1", "2", 3, "3", "2")
                    , "5", "6", "4"). Distinct (). Subscribe (New action1<serializable> () { @Override public void Call (Serializable Serializable) {LOGUTILS.A (Seriali
                    zable);
       }         }); /** * Take: Before the launch of n data, or with the above example, assuming that you do not change the name of all schools, the first four schools to change the name: * * private void iniClick15 () {list<
        school> list = new arraylist<> ();
            for (int i=0;i<5;i++) {School School = new School ();
            School.setname ("name" +i);
            list<school.student> students = new arraylist<> ();
                for (int y=0;y<=i;y++) {school.student Student = new School.student ();
                Student.setname ("Student name" +i+ "-" +y);
            Students.add (student);
            } school.setstudentlist (students);
        List.add (school);
                    } observable.from (list). Take (3). Map (new Func1<school, school> () { @Override Public School Call (School School) {school.setname ("Hip Hop ha Da
                        Learning ");
                    return school; }). subscrIbe (new action1<school> () {@Override public void call (School School) {}
        });
                    Observable.from (list). Subscribe (New action1<school> () {@Override
                    public void Call (School School) {LOGUTILS.A (School.getname ());


    }
                }); /** * Map and buffer are combined using/private void IniClick14 () {list<school> List = new Arraylis
        T<> ();
            for (int i=0;i<5;i++) {School School = new School ();
            School.setname ("name" +i);
            list<school.student> students = new arraylist<> ();
                for (int y=0;y<=i;y++) {school.student Student = new School.student ();
                Student.setname ("Student name" +i+ "-" +y);
            Students.add (student);
            } school.setstudentlist (students); List.aDD (school);
                    Observable.from (list). Map (new Func1<school, school> () {@Override
                        Public School called (School School) {school.setname ("NB University");
                    return school; ). Buffer (List.size ()). Subscribe (New action1<list<school>>

                    () {@Override public void call (list<school> schools) {

    }
                }); /** * Buffer: Cache, you can set the cache size, cache full, the data sent out in the list; Example: * * private void IniClick13 () {Observable.ju
                    St (1,2,3,4,5). Buffer (2). Subscribe (New action1<list<integer>> () { @Override public void call (list<integer> integers) {LOGUTILS.A
                    (Integers.size ()); }
                });
    /** * Flagmap * If the name of the student in the country is printed * Anyway, flagmap is it. One observer translates to another observer * * private void I
        NiClick12 () {list<school> List = new arraylist<> ();
            for (int i=0;i<5;i++) {School School = new School ();
            School.setname ("name" +i);
            list<school.student> students = new arraylist<> ();
                for (int y=0;y<=i;y++) {school.student Student = new School.student ();
                Student.setname ("Student name" +i+ "-" +y);
            Students.add (student);
            } school.setstudentlist (students);
        List.add (school);
                    } observable.from (list) Flatmap (new Func1<school, observable<school.student>> () {
                        @Override Public observable<school.student> Call (School School) {
                  Return Observable.from (School.getstudentlist ());  }). map (new func1<school.student, string> () {@Override
                    Public String Call (School.student Student) {return student.getname ();
                    }). Subscribe (New action1<string> () {@Override
                    public void Call (String s) {LOGUTILS.A (s);

    }
                }); /** * Flagmap * If printing the National School name * * private void IniClick11 () {list<school> List = new A
        Rraylist<> ();
            for (int i=0;i<5;i++) {School School = new School ();
            School.setname ("name" +i);
            list<school.student> students = new arraylist<> ();
                for (int y=0;y<=i;y++) {school.student Student = new School.student ();
               Student.setname ("Student name" +i+ "-" +y); Students.add (student);
            } school.setstudentlist (students);
        List.add (school);
                    Observable.from (list). Map (new Func1<school, string> () {@Override
                    Public String Call (School School) {return school.getname ();
                    }). Subscribe (New action1<string> () {@Override
                    public void Call (String s) {LOGUTILS.A (s);

    }
                }); }/** * Map/private void IniClick10 () {observable.just (1234). Map (New Func
                        1<integer, string> () {@Override public String call (integer integer) {
                    integer+1000+ return ""; }). Subscribe (New AcTion1<string> () {@Override public void call (String s) {
                    LOGUTILS.A (s);

    }
                }); /** * Simulate background record Data update to foreground process * to explain briefly, Subscribeon () determines which scheduler the launch data executes on, * Observeon (Androidschedulers.mai
     Nthread ()) specifies that data reception occurs on the UI thread, which is simply not convenient. * * private void IniClick9 () {observable.create (new observable.onsubscribe<string> () {@Over
                Ride public void Call (SUBSCRIBER&LT. Super string> Subscriber) {//Database fetch data
                The String is = ' this is main ';
                try {thread.sleep (3000);
                catch (Interruptedexception e) {e.printstacktrace ();
             }//Launch Subscriber.onnext (IS);
              }). Subscribeon (Schedulers.io ()). Observeon (Androidschedulers.mainthread ())  . Subscribe (New action1<string> () {@Override public void call (String s) {
                    LOGUTILS.A (s);




    }
                }); The OnNext method of/** *mobserver will receive the data from justobservable "Just1", "Just2" in turn, * and if you don't care if the data is received or if there is an error, you do not need observer  OnCompleted () and OnError () methods, * You can use Action1,subscribe () support to pass Action1 as a parameter, and Rxjava will invoke its call method to receive data,/private void IniClick8 () {observable.just ("This action", "This is Action"). Subscribe (New Action1<str Ing> () {@Override public void call (String s) {Logutil
                    S.A (s);
    }
                });
        /** * uses repeat () to create a observable that repeatedly emits specific data: * The following example is repeated 2 times * */private void IniClick7 () {
                    Observable.just ("Wo shi repeat"). Repeat (2). Subscribe (New observer<string> () {@Override public void oncompleted () {LOGUTILS.A ("oncompleted");

                    @Override public void OnError (Throwable e) {} @Override public void OnNext (String s) {LOGUTILS.A ("OnNext

                    : "+s);
    }
                });
 /** * uses timer () to create a observable that emits a special value after a given delay, equivalent to the handler Postdelay () method in Android.