Android WebView 开启Cookie

    /**
     * 初始化
     */
    public void init() {
        returnBnt = findViewById(R.id.returnBnt);

        mainWeb = findViewById(R.id.mainWeb);
        
        // 开启Cookie
        if (android.os.Build.VERSION.SDK_INT >= 21) {
            CookieManager.getInstance().setAcceptThirdPartyCookies(mainWeb, true);
        }else {
            CookieManager.getInstance().setAcceptCookie(true);
        }

        initWebView();

        mainWeb.loadUrl(URL);
    }