rxjava和rxandroid简单的使用

compile 'io.reactivex.rxjava2:rxjava:2.0.4'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'

package com.supermap.rxjavademo;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;

import io.reactivex.Observable;
import io.reactivex.ObservableEmitter;
import io.reactivex.ObservableOnSubscribe;
import io.reactivex.Observer;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;

public class MainActivity extends AppCompatActivity {
    private TextView contentTxt;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        contentTxt = findViewById(R.id.text);
        findViewById(R.id.clickBtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dealEvent();
            }
        });
    }

    /*
    *  18/1/22  -  11:10
    *  处理事件
    */
    private void dealEvent() {
        Observable
                .create(new ObservableOnSubscribe