Question

当我取消订阅可连接的observable并稍后再次连接它时，有可能。

例如：

var interval = Rx.Observable.interval(1000);

var source = interval
    .take(2)
    .do(function (x) {
        console.log('Side effect');
    });

var published = source.publish();

published.subscribe(createObserver('SourceA'));
published.subscribe(createObserver('SourceB'));

// Connect the source
var connection = published.connect();

function createObserver(tag) {
    return Rx.Observer.create(
        function (x) {
            console.log('Next: ' + tag + x);
        },
        function (err) {
            console.log('Error: ' + err);
        },
        function () {
            console.log('Completed');
        });
}

Answer 1

是的。这正是运算符@SuppressLint("SetJavaScriptEnabled") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); private String TEXT_INSTAGRAM = "<blockquote class=\"instagram-media\" data-instgrm-captioned=\"\" data-instgrm-version=\"7\" style=\" background:#FFF; border:0; border-radius:3px; box-shadow:0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width:658px; padding:0; width:99.375%; width:-webkit-calc(100% - 2px); width:calc(100% - 2px);\"><div style=\"padding:8px;\"> <div style=\" background:#F8F8F8; line-height:0; margin-top:40px; padding:62.4537037037% 0; text-align:center; width:100%;\"> <div style=\" background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACwAAAAsCAMAAAApWqozAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAMUExURczMzPf399fX1+bm5mzY9AMAAADiSURBVDjLvZXbEsMgCES5/P8/t9FuRVCRmU73JWlzosgSIIZURCjo/ad+EQJJB4Hv8BFt+IDpQoCx1wjOSBFhh2XssxEIYn3ulI/6MNReE07UIWJEv8UEOWDS88LY97kqyTliJKKtuYBbruAyVh5wOHiXmpi5we58Ek028czwyuQdLKPG1Bkb4NnM+VeAnfHqn1k4+GPT6uGQcvu2h2OVuIf/gWUFyy8OWEpdyZSa3aVCqpVoVvzZZ2VTnn2wU8qzVjDDetO90GSy9mVLqtgYSy231MxrY6I2gGqjrTY0L8fxCxfCBbhWrsYYAAAAAElFTkSuQmCC); display:block; height:44px; margin:0 auto -44px; position:relative; top:-22px; width:44px;\"></div></div> <p style=\" margin:8px 0 0 0; padding:0 4px;\"> <a href=\"https://www.instagram.com/p/BNYDM90gGJ3/\" style=\" color:#000; font-family:Arial,sans-serif; font-size:14px; font-style:normal; font-weight:normal; line-height:17px; text-decoration:none; word-wrap:break-word;\" target=\"_blank\">A view</a></p> <p style=\" color:#c9c8cd; font-family:Arial,sans-serif; font-size:14px; line-height:17px; margin-bottom:0; margin-top:8px; overflow:hidden; padding:8px 0 7px; text-align:center; text-overflow:ellipsis; white-space:nowrap;\">A photo posted by Sarah (@sarahsnyder) on <time datetime=\"2016-11-29T01:34:08+00:00\" style=\" font-family:Arial,sans-serif; font-size:14px; line-height:17px;\">Nov 28, 2016 at 5:34pm PST</time></p></div></blockquote><script async=\"\" defer=\"\" src=\"http://platform.instagram.com/en_US/embeds.js\"></script>"; WebView webView = (WebView) findViewById(R.id.webview); webView.setHorizontalScrollBarEnabled(false); webView.setVerticalScrollBarEnabled(false); webView.getSettings().setJavaScriptEnabled(true); webView.getSettings().setUserAgentString(USER_AGENT); webView.loadDataWithBaseURL(null, TEXT_INSTAGRAM, "text/html", "utf-8", null); }的作用。它订阅并取消订阅ConnectableObservable。

请参阅：https://github.com/ReactiveX/rxjs/blob/master/src/observable/ConnectableObservable.ts

重新连接可观察的

1 个答案: